Non classifié(e) – Page 4 – Entomological Society of Canada

The Cuckoo Gypsy Bumble Bee: A Species Endangered

B. bohemicus male Image: Magne Flåten via wikimedia.org CC BY-SA 3.0 (B. bohemicus female here)

By Zach DeLong

When people hear of endangered species they often think of large and impressive creatures like the Siberian Tiger or Panda Bear, but we often forget about the smaller, yet no less impressive species that need our help as well. The charmingly named Cuckoo Gypsy Bumblebee, or as scientists all it Bombus bohemicus, is a member of the family Apidae, in the order Hymenoptera. Though the Species at Risk Act (SARA) currently has no status for the Cuckoo Gypsy Bumblebee, it has been recognized and listed as endangered by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC). The term “endangered” is a hot topic, but there may be confusion about what it truly means. As defined by COSEWIC, an endangered species is “a wildlife species facing imminent extirpation or extinction[1]”. In the case of the Cuckoo Gypsy Bumblebee, this means the species is at risk of disappearing from the Canadian wilderness.

The Cuckoo Gypsy Bumblebee is an inquiline parasite of other types of bees, which means the Cuckoo Gypsy Bumblebee is a home invader. Normally such an invader would be attacked by the workers within the hive, but the Cuckoo Gypsy Bumblebee produces a variety of chemicals which both disguise it as a member of the host species[2] and inhibit worker aggression towards the invader[3]. The Cuckoo Gypsy Bumblebee is a generalist parasite and is surprisingly able to successfully invade a number of different Canadian species, namely the Rusty-patched Bumblebee, the Yellow-banded Bumblebee, and the Western Bumblebee[4]. Once inside the nest the Cuckoo Gypsy Bumblebee engages in a number of dominance behaviours to usurp the host queen, including ejecting host larvae from cells, eating host eggs and even outright attacking the host queen[5]. Coexistence with the host queen is preferable as her suppressor pheromones help control the workers who might otherwise attempt to become reproductively active themselves, so the invading Cuckoo Gypsy queen will often choose to shove or perform faux-stinging behaviour over outright killing her co-matriarch[5]. The Cuckoo Gypsy queen produces no workers of her own. This means she relies on host workers to defend the nest, rear her young, and forage for food[2]. Instead, all her offspring are reproductive with a 1:1 female to male ratio[6]. Young Gypsy Cuckoo Bumblebees can be seen flying about and feeding on flowers while they wait for their reproductive organs to mature so they can begin looking for a mate and a suitable host nest to invade.

Distribution of Cuckoo Gypsy Bumble Bee throughout North America. Image: COSEWIC

The Cuckoo Gypsy Bumblebee is widely distributed across a wide range in Canada, with individuals found in all provinces and territories except Nunavut[4], though populations are mostly concentrated in southern portions of Ontario and Quebec, and the Maritime provinces. Its decline across Canada has been attributed to a number of factors. It has been shown that a certain host density must be maintained for cuckoo bee parasites to be able to persist in a given area, and the general decline of bees throughout Canada has subsequently damaged Cuckoo Gypsy Bumblebee populations[4]. The mass spraying of crops with pesticides, particularly neonicotinoids, and the release of pathogen-carrying exotic bee species have impacted both cuckoo bees and host densities across Canada[4]. If we want the Cuckoo Gypsy Bumblebee to recover, perhaps the best way is to make Canada a more bee friendly environment as a whole. If we address issues resulting in the decline of other bee species, we can provide the population density necessary to facilitate persistent cuckoo populations. Additionally, addressing factors such as pesticide usage and the introduction of foreign pathogens would have positive effect on Cuckoo Gypsy Bumblebees as this would not only increase the population density of hosts, but also improve survival rates of Cuckoo Gypsy Bumblebees themselves.

References

[1]Assessment Process, Categories and Guidelines. COSEWIC. 2005-06-15. 2015-07-08. http://www.cosewic.gc.ca/eng/sct0/assessment_process_e.cfm#tbl5

[2]Kirsten Kreuter, Elfi Bunk, Anna Lückemeyer, Robert Twele, Wittko Francke, Manfred Ayasse(2012). How the social parasitic bumblebee Bombus bohemicus sneaks into power of reproduction. Behavioral Ecology and sociobiology, Vol 66, Issue 3, pp 475-486.

[3]Stephen J. Martin, Jonathan M. Carruthers, Paul H. Williams, Falko P. Drijfhout(2010). Host Specific Social Parasites (Psithyrus) Indicate Chemical Recognition System in Bumblebees. Journal of Chemical Ecology, Vol 36, Issue 8, pp 855-863.

[4]COSEWIC Wildlife Species Search: Bumble Bee, Gypsy Cuckoo | Bombus bohemicus. COSEWIC. 2002-10-21. 2011-11-07. http://www.cosewic.gc.ca/eng/sct1/searchdetail_e.cfm?id=1232&StartRow=191&boxStatus=All&boxTaxonomic=All&location=1&change=All&board=All&commonName=&scienceName=&returnFlag=0&Page=20

[5]R. M. Fisher(1988). Observations on the behaviours of three European cuckoo bumble bee species (Psithyrus). Insectes Sociaux, Volume 35, Issue 4, pp 341-354.

[6]Vergara, Carlos H. (2003). Suppression of ovarian development of Bombus terrestris workers by B. terrestris queens, Psithyrus vestalis and Psithyrus bohemicus females. Apidologie 34, pp 563–568

janvier 28, 2016/par Sean McCann

The Skillet Clubtail Dragonfly: What you don’t know

Fig. 1. Skillet Clubtail dragonfly adult; notice the distinctive “skillet” on tail. Photo Credit: David Marvin. Used under a Creative Commons BY-NC-ND 2.0 licence.

By Melody McLean

What if I told you that as a New Brunswicker, there are animals in danger of going extinct in your own backyard? Saying that, you’re probably thinking of a cute, fuzzy, little animal with big, sad eyes being displaced from its home. Well, that’s not what I’m referring to. I’m talking about the Skillet Clubtail Dragonfly (Gomphus ventricosus), belonging to the insect order Odonata. This dragonfly currently has no status under the Species at Risk Act (SARA), but was the only arthropod classified in the 2010 COSEWIC (Committee On the Status of Endangered Wildlife In Canada) report as being endangered. Simply put, if we don’t do something, they could become extirpated[i] from Canada or even extinct. When we hear about insects in our province, we often associate them with being pests, like spruce budworm, aphids, or disease spreading agents like mosquitos. But what we don’t often realize is that not all animals at risk of extinction are cute and fluffy. I’m here to shed some light on an underdog of the animal world, who could use a little help from us.

Insects-we can’t live with them; we can’t live without them.

What you may not know is just how thankful we (myself included) should be for insects. They clean up after us, help to provide us with rich soil for our gardens, indirectly provide us with fresh food thanks to their pollination efforts; some, like dragonflies, even keep other insects from bugging us¾like our own personal pest control.

The Skillet Clubtail dragonfly is strikingly beautiful, with green, yellow, black and brown markings running along its thorax and abdomen; transparent wings; big dark green eyes; and a distinctive circular flare, resembling a skillet, at the tip of its tail (Fig. 1).

The Biology behind the Insect

The Skillet Clubtail’s life cycle and biology is very similar to that of other dragonflies. The female lays her eggs by dipping her abdomen into the water to release them. Growing and developing, the shallowly burrowed nymphs take at least 2 years (possibly more) to develop before emerging. If conditions are right, usually in the latter 2 weeks of June, the dragonfly nymphs will find a “settle point” where the water is calm; they’ll climb up onto nearby vegetation to emerge synchronously[ii] as adults. Although the nymphs spend the majority of their lives in the water, the adults spend most of their lives around brush, fields, bogs and in the nearby canopy to forage for other insects.

Home of the Skillet Clubtail

This stunning dragonfly is restricted to North America. In Canada, it is currently found only in a few select places along the Saint John River, specifically in the Fredericton region of New Brunswick. Over 60 years ago, the Skillet Clubtail could be found in a few other locations in Canada, including Ontario, Nova Scotia and Quebec. But since there have been no recent sightings there, New Brunswick may be the last known Canadian location. The United States is running into similar problems with this insect too. It was once found in Pennsylvania and New York but is likely extirpated from both of those areas. The U.S. range extends along the Red River Basin, running from Mississippi, Tennessee, Minnesota, to the northeastern limit in New Hampshire and Maine.

Habitat: Very Important

This insect is in need of a specific and rare habitat type: a clean, large, slowly running body of water, with fine sediments and substrate, such as clay, silt, or sand, with nearby forested areas for cover. Many of these habitats are only found when the waters run through an area of rich soils, at a low gradient[iii].

99 Problems

This is where problems arise, as the Skillet Clubtail’s habitat is often prime agricultural land, where possible pollution in the river can occur, and nutrient run-off becomes a concern. Keep in mind, agriculture runoff from fertilizers, pesticides, and herbicides, are not the only culprits behind river pollution. Accidental and illegal dumping, and everyday toxins such as oil, grease, road salt, contaminants from vehicle exhaust, lawn and garden chemicals, and other harmful substances, all have a tendency to wash off lawns and roadways down to rivers and waterways. This is especially relevant here in Fredericton as the Saint John River is considered to have “marginal” water quality. As this city is literally built on a hill, all that urban runoff must go somewhere.

Although pollution is likely a major factor to this species decline, there is also the problem of sea level rise. As the sea level rises, saline water travels further up stream into the rivers, changing the chemistry of the water. This is likely to impact freshwater aquatic wildlife, as most aquatic species cannot adapt to such rapid change in their habitat. Because the farthest population is just 5 km away from the saline water limit, this is a real possibility. It’s been discussed that the Skillet Clubtail populations further upstream on the Canaan River and Salmon River could be safe from saline influence. However it has also been speculated that the main Saint John River population acts as a metapopulation, supporting the other two populations by providing immigrating individuals to them.

It’s good to note that this species needs the surrounding forest, included in its habitat. Even though mass cuttings of forests in these locations are unlikely to happen right now, we should still keep in mind deforestation has the potential to affect not only the Skillet Clubtail dragonfly, but many other species as well.

Why should you care?

Maybe you’ve gotten through this whole article and decided that you don’t care about the Skillet Clubtail Dragonfly. That’s fine. But think of it this way: the things that are likely affecting this particular dragonfly should be of broader concern to us. Chemical runoff, deforestation, general pollution and rise in sea level don’t just affect this one dragonfly species; they affect everything living that comes in contact with them, including us. The best way to finding a solution to a problem is by better understanding it through increasing our knowledge. Don’t be ignorant of the events happening in your community and environment. Take notice and do something about any detrimental events, like pollution, in your area. Dragonflies and other aquatic insects are great indicators of stream and river health, and not much is known about this particular dragonfly. So if you spot the Skillet Clubtail dragonfly, send your recordings and findings to your local Entomological Society. Many little changes have the potential to lead to one big change.

[i] Extirpated: a species that was once found in an area but is no longer found there. This is different from extinction because you can still find that particular species of animal in other areas of the country or world, therefore not totally extinct just extirpated.

[ii] They all emerge at once over a short period of time.

[iii] Low gradient streams are associated with flattened stream beds, with slow moving water and gradual, less steep slopes of surrounding valley

janvier 27, 2016/par Sean McCann

Canadian Entomology, ESC Blog, Non classifié(e), Students

The sand-verbena moth

Figure 1 The sand-verbena moth (Photo: Wendy Gibble, Used under a CreativeCommons CC_BY 2.0 licence)

By Lisa Jørgensen

The sand-verbena moth (Copablepharon fuscum) is, when it comes to looks, a relatively anonymous fellow. This nocturnal moth, which belongs to the order Lepidoptera (butterflies and moths) and the family Noctuidae, has a wingspan of 3.5-4.0 cm and has only been found in three Canadian sites, all on the coast of southwestern British Columbia, and in a few sites in the northwestern coastal part of Washington, USA.

The moth is heavily dependent on the presence of yellow sand-verbena, as this plant is the only host that it uses for egg laying, and later for the emerging larvae and adult to feed on. The yellow sand-verbena demands sandy, nutrient poor conditions, and though it is present in areas where other plants are dominating, it will only flower at sites where it is the dominant species. The moth has been found to require large patches of yellow sand-verbena to sustain a population, but such patches are difficult to come across because of the habitat requirements of the plant.

Figure 2 Preferred habitat of yellow sand-verbena, here Long Beach Peninsula, WA, US (Photo: Wendy Gibble), Used under a CreativeCommons CC_BY 2.0 licence)

This pickiness in the moth’s choice of host plant is the most probable reason that the sand-verbena moth is considered an endangered species under the SARA (Species at Risk Act), which is the official list of Canadian wildlife at risk. The label ‘endangered’ is put on species that are in risk of extirpation or extinction, meaning that the present populations of an ‘endangered’ species are the last in the wild. We do not know how many individuals of this moth species is left, but we do know that due to plant invasion, the number of sandy patches with yellow sand-verbena is decreasing, as other plants colonize the same habitat, thus keeping down numbers of yellow sand-verbena and keeping them from flowering. When the number or size of available habitats is lowered, the moth populations will naturally experience a decrease. Another reason for the loss of habitat is the proximity of the sandy patches to the shoreline that makes the patches at risk of suffering of erosion or flooding, and the use of dunes for military training that expose the plants to the risk of being trampled down. A more direct threat to the moth than the threat of habitat loss, is the spraying of Btk (Bacillus thuringiensis kurstaki) against the larvae of pest moths, or parasitic flies introduced (i.e. not from the “hood”) for the same cause.

But why should we care about this specific endangered species? It does not play any crucial part in the pollination of yellow sand-verbena, nor is it particularly important in the local food web or to the economy, so what would happen if it we took the laissez-faire approach and did nothing to help this species? It would probably disappear from some patches, and ultimately go extinct, as it has shown poor ability into dispersal on its own. But we can do something, and it may not even cost us a lot of money (that’s a good argument, eh?)! Approaches to help recovery the Canadian populations of sand-verbena moth include the protection of patches dominated by yellow sand-verbena by physically protecting the plants from erosion and trampling by training soldiers, by fencing the area (however temporarily), and the movement of yellow sand-verbena from patches where it has a low abundance (and so no sand-verbena moth population) to patches that are in risk of being dominated by other plants (with a moth population). Also, public outreach to the areas with populations of sand-verbena moth has been initiated, and the existing populations are being monitored. The Ministry of Environment of British Columbia considers the recovery goal of the sand-verbena moth, to maintain the populations at the current locations, to be feasible.

Sources:

SARA (Government of Canada): https://www.registrelep-sararegistry.gc.ca/species/speciesDetails_e.cfm?sid=789 25/11 2015

British Columbia Invertebrates Recovery Team. 2008. Recovery strategy for Sand-verbena Moth (Copablepharon fuscum) in British Columbia. Prepared for the B.C. Ministry of Environment, Victoria, BC. 18 pp.

janvier 26, 2016/par Sean McCann

ESC Blog, Non classifié(e)

Student posts from Bio 3883!

This week the ESC Blog will host posts written by undergraduate students at the University of New Brunswick (Fredericton). In the autumn, the students of Biology 3883 (Entomology) each wrote a blog post-style assignment on an arthropod of conservation concern in Canada. We posted these to our (private) course blog, and five of the students agreed to share their posts here.

We had a few goals in mind when asking the student to do this type of assignment. First, we wanted students to gain experience writing in a different style and for a different audience than a regular course assignment, and a blog post seemed like it might be an interesting format for both the students and ourselves. Second, while the students were aware of many of the ways insects impact human lives (as pests, parasites, pollinators etc.), we wanted to give students the opportunity to learn about the lesser known insects, specifically those of conservation concern, many of which are of such concern directly or indirectly as a result of human activities.

We hope you enjoy the student blog posts as much as we did!

Stephen Heard (@StephenBHeard) and Chandra Moffat (@ChandraMoffat)

janvier 25, 2016/par Sean McCann

ESC Blog, Non classifié(e)

The Five-spotted Bogus Yucca Moth, Prodoxus quinquepunctellus

The Five-spotted Bogus Yucca Moth, Prodoxus quinquepunctellus

By Isaac MacLean

Mark J. Dreiling via bugguide.net (2) CC BY-ND-NC 1.0

The Five-spotted Bogus Yucca Moth (Prodoxus quinquepunctellus) belongs to the family Prodoxidae of the Lepidoptera (moths and butterflies). It is a small, nondescript, almost entirely white moth with a few small dark spots on its forewings. Although it can be found in much of the United States, there is only one remaining population in Canada¹. This species’ SARA (Species at Risk Act) status is endangered¹. An endangered species is one that is very close to being extinct or extirpated. In the case of the Five-spotted Bogus Yucca Moth, it is very close to being extirpated from Canada¹ (which means that the species is nearly gone in Canada, but still exists in other locations).

In order to understand where the Five-spotted Bogus Yucca Moth got its odd-sounding name, you need a little background on another moth and the plant it relies on. In Canada, Yucca is found only in Alberta¹. It is a small shrub pollinated exclusively by the Yucca moth (not the “bogus” Yucca moth)¹. Why do the Yucca moths pollinate Yucca plants? When a Yucca moth lays its eggs on a Yucca, they develop into larvae, and the larvae need something to feed on. The Yucca moth is the only pollinator of Yucca, and as a sort of “thank you” for pollination, some of the seeds a Yucca produces feed the developing moth larvae⁶_.

So where do the Bogus Yucca Moths (genus Prodoxus) come into all of this? They got their “bogus” name because although they also need Yucca for their larvae to survive, they do not aid in pollination and their larvae do not feed on Yucca seeds.⁶ A female Bogus Yucca Moth will lay its eggs inside the flowering stalk of the Yucca plant. When the larvae emerge, they feed on the stem tissue of the Yucca¹.

BIO Photography Group/CNC, Biodiversity Institute of Ontario via Boldsystems.org (3)

The Five-spotted Bogus Yucca Moth is so fragile because of its complete reliance on Yucca and Yucca Moths. If a Yucca Moth does not pollinate a Yucca’s flowers, no fruit is produced and the flowering stalk withers¹. Almost all larvae within a flowering stalk that bears no fruit will be killed when it withers¹. This species has been listed on SARA because in Alberta, there are only two populations of Yucca, and only one of them currently supports a population of Five-spotted Bogus Yucca Moths¹. There are only an estimated 500 to several thousand Five-spotted Bogus Yucca Moths remaining in Canada¹.

To keep this species from becoming extirpated from Canada, we must protect it and the species it relies on. Because of the relationship the Five-spotted Bogus Yucca Moth has with both Yucca moths and Yucca, any threat to the latter two will be an equal threat to the Five-spotted Bogus Yucca Moth. Currently, threats to Yucca and Yucca moth populations include cold weather, consumption by mule deer and pronghorn antelope, off-roading vehicles, and collection of the plant for medicinal use^1,5.

Some possible actions that could be taken to minimize these threats are already being implemented through SARA and were outlined in the 2011 SARA recovery strategy for Yucca and Yucca moths. These include plans for habitat protection by limiting public access, fencing to deter mule deer and antelope, and a museum display to promote Yucca conservation⁶. Further action to protect the species could be implementing regulations on the collection of Yucca for medicine or horticulture. It is important to spread information about the conservation of the Five-spotted Bogus Yucca Moth, its host plant, and the Yucca moth as without public knowledge of threats to them and their habitat the risk of extirpation from Canada greatly increases.

References

https://www.registrelep-sararegistry.gc.ca/species/speciesDetails_e.cfm?sid=927#ot18
http://bugguide.net/node/view/631427/bgpage
http://www.boldsystems.org/index.php/Taxbrowser_Taxonpage?taxid=139786
http://www.registrelep-sararegistry.gc.ca/species/speciesDetails_e.cfm?sid=715
Snell RS and Addicott JF. 2008. Limiting the success of stem borers (prodoxus quinquepunctellus) in yuccas: Indirect effects of ants, aphids, and fruit position. Ecol Entomol 33(1):119-26.
http://www.registrelep-sararegistry.gc.ca/virtual_sara/files/plans/rs_soapweed_yucca_moth_0811_eng.pdf

janvier 25, 2016/par Sean McCann

ESC Blog, Non classifié(e)

We stand on the shoulders of giants: Reflections by a midget

Guest post by Staffan Lindgren

On a rainy, blustery day I am sitting in my new home in Nanaimo, BC, and thinking about my professional career, which is about to come to an end in the next few weeks, at least officially. I have been doing a fair bit of reading lately, and the last 2 books have been by and about Charles Darwin. Both are books I probably should have read a long time ago. The first book was Darwin’s “The voyage of the Beagle”, which is essentially a travel diary of the four-year journey Darwin took as a young man. The second book was “Darwin and the barnacle”, by Rebecca Stott, which is about Darwin’s struggles to formulate his Magnus Opus “On the Origin of Species by Means of Natural Selection”, which essentially changed biological sciences, and perhaps society, forever. The “Voyage” gave me an appreciation of the incredible breadth of knowledge that Darwin acquired. Much of the book deals with geology and the effects of seismic activity on the environment rather than the biological focus I had expected. Stott’s book is a somewhat fictionalized portrait of Darwin’s life in the period between his return from the Beagle voyage and the publication of his final of a four volume monograph on the barnacles (Cirripedia). The book is largely based on correspondence and publications, and luckily Darwin seems to have recorded pretty much everything he did, although Darwin’s actions and thoughts may have been embellished somewhat by the Stott’s imagination. For me, it worked quite well, though. I felt as if I got to know the man much better, and particularly I felt that I got an appreciation of the monumental barriers that Darwin overcame, both because of the rather crude technology available to him (fairly rudimentary microscopes, correspondence by “snail mail” etc.), and his poor health. I was amazed to find out that he suffered from sea sickness during his voyage on the Beagle, and anyone who knows what that is like (I have been lucky, but have been close enough a couple of times) would perhaps understand how difficult it would be to work productively while sea sick, let alone in the cramped quarters on the ship. Darwin’s “lab” was in the “poop cabin”, which conures up some interesting images for us landlubbers, but actually only refers to the cabin in the elevated “poop deck” at the front of a ship”. Darwin also had bouts of illness during his voyage, but most notable he suffered chronic problems after his voyage. This may have been due to Chagas’ disease, which was unknown at the time. During a trip across the Cordillera (he made numerous such excursions during his voyage), Darwin describes a night spent in Luxan (now Luján de Cuyo), in the western Mendoza Province, as follows: “At night I experienced an attack (for it deserves no less a name) of the Benchuca, a species of Reduvius, the great black bug of the Pampas” . Chagas’ disease is widespread in that area.

Scientists back then were either independently wealthy, like Darwin, or employed as clergymen or physicians, or more rarely as lecturers at universities. Linnaeus for example, was a physician as well as a naturalist. It has always been my assumption that this allowed them virtually endless amounts of time. Darwin, however, spent only 2-3 hours a day on his barnacles due to a rigorous water cure he used to overcome his illness. In spite of this, he published rather prolifically on geology, volcanoes, coral reefs, plants, domestic animals and humans. In the title I refer to myself as a midget, and after reading about Darwin I really do feel rather insignificant!

I enjoy retrospective mind-journeys. Another scientist that I have a particular interest in was one of Linnaeus disciples, Daniel Solander. His name rarely surfaces, however, because he did not publish his work for various reasons (apparently in large part in deference to his friend and financier Joseph Banks, but also because he died of a stroke at age 49). He is of particular interest to me because he grew up about 6 km from where I grew up in a small town in northern Sweden, so it is likely that I spent my naturalist beginnings in the same areas that he did. He was a naturalist on James Cook’s first voyage on the Endeavour, and was therefore one of the first scientists to see the odd marsupials of Australia, for example.

Science today is very different. Naturalists, systematists and taxonomists, which is what old-school scientists were, are not valued the way they were even as late as the mid-20^th Century. Our publications tend to be short and to the point, lacking the wonderful context that older literature often provides. Looking at the publications of my entomology professor, Bertil Kullenberg, who was active into the mid-1990’s, it is striking how often the title includes “Observations on…”, “Studies on…”, or something similar, particularly early on. Of course, if current publications were as prosaic as they were back then, the task of keeping up would be even more daunting with hundreds or thousands of papers published on the most important (to humans) taxa. But perhaps they would be more enjoyable to read?

With the processing power of present day computers, we can now do in seconds what would take weeks or months in the past, if it was possible at all. One aspect of science (specifically entomology in my experience) that remains constant today is the camaraderie among scientists. Darwin understood the importance of networking, and depended to a large extent on his friends and colleagues for specimens, reviews, and discussion: “if a person wants to ascertain how much true kindness exists amongst the disciples of Natural History, he should undertake, as I have done, a monograph on some tribe of animals, and let his wish for assistance be known.” To me, it is gratifying that one of the greatest minds of science, also appears to have been a genuinely kind and considerate person. That is something I admire greatly, and as I look back at my own rather modest career (particularly in light of giants like Charles Darwin) it is the friendships with colleagues that I value the most. A most appropriate reflection as the holiday season approaches. Happy holidays everyone!

Sources

Darwin, C. 1962. The Voyage of the Beagle. Natural History Library edition, edited by Leonard Engel.

Stott, Rebecca. 2003. Darwin and the Barnacle. W.W. Norton & Co., New York

décembre 13, 2015/par Sean McCann

ESC Blog, Non classifié(e)

Travel awards for ICE 2016 in Orlando

Remember: Florida insects are awesome! Here is Oncometopia nigricans, a beautiful leafhopper!

OK all you students and early career professionals, the time to apply for travel funding for the 2016 ICE conference in Orlando is running out! Apply for these awards! I have copied the text (both English and French) of the instructions to apply below, but if you prefer to download….

Here are the application instructions in English

et voici les instructions d’application en francais

Entomological Society of Canada Travel Awards for the 2016 XXV International Congress of Entomology

The 2016 Entomological Society of Canada (ESC) meeting will be held in conjunction with the International Congress of Entomology (ICE) in Orlando, Florida, from September 25-30, 2016. Thanks to the generous support of Enterra Feed Corporation and Dow Agrosciences Canada the ESC is offering 14 cash awards of $750 to provide financial assistance for students and early professionals to travel to ICE 2016.

Eligibility:

The competition for the ESC ICE Travel Awards is open to students in a graduate program at a Canadian university, and to early professionals. Early professional membership applies to persons within 3 years (based on the calendar year) of graduation from their highest educational degree. Awardees must be members in good standing (dues paid) of the ESC at the time the award is given.
Graduate students or early professionals must present a paper or a poster at ICE 2016 on their own original research.
Individuals can accept either the ESC ICE travel award or an ESA STEP travel award (which will be announced around Dec. 1^st 2015).

Deadline: December 21^st 2015

Applications to be submitted by email to: jsc21@sfu.ca with the following in the subject line – Your last name and ICE 2016. The application must contain the following 3 documents in this order and be in a single pdf file. Any applications not meeting this format will not be reviewed

Applications will be evaluated on:

A short Curriculum Vitae (no more than 2 pages), that includes contact information, education, employment history, the most relevant publications, presentations, awards, grants and scholarships, other activities, outreach and service.

A one-page statement of significance which describes the scope and importance of the work to be presented and how attending the meeting will benefit the applicant.

Details of estimated costs for ICE 2016, indicating other sources of funding, either confirmed or applied for.

In addition, arrange for a one-page letter of recommendation from your supervisor or a faculty member who is familiar with your research to be emailed to jsc21@sfu.ca with your name in the subject line. This should also be a pdf.

Applications will be reviewed by the Students Awards Committee of the ESC. Winners will be notified by mid-January (i.e. before the deadline for abstracts).

Bourses de voyage de la Société d’entomologie du Canada pour le XXV International Congress of Entomology 2016

La réunion annuelle 2016 de la Société d’entomologie du Canada (SEC) se tiendra en concomitance avec l’International Congress of Entomology (ICE) à Orlando, Floride, du 25 au 30 septembre 2016. Grâce au soutien généreux d’Enterra Feed Corporation et de Dow Agrosciences Canada, la SEC offre 14 bourses en argent de 750$ pour fournir une aide financière aux étudiants et jeunes professionnels pour se rendre à l’ICE 2016.

Éligibilité :

La compétition pour les bourses de voyage SEC ICE est ouverte aux étudiants dans un programme de cycle supérieur dans une université canadienne et aux jeunes professionnels. La catégorie de membre jeune professionnel s’applique aux gens ayant gradués de leur plus haut diplôme il y a moins de 3 ans (selon l’année de calendrier). Les récipiendaires doivent être membres en règle (frais d’adhésion payés) de la SEC au moment où la bourse est remise.
Les étudiants gradués ou jeunes professionnels doivent présenter un oral ou une affiche lors de l’ICE 2016 sur leurs propres recherches originales.
Les individus peuvent accepter la bourse de voyage SEC ICE ou une bourse de voyage ESA STEP (qui sera annoncée autour du 1^er décembre 2015).

Date limite : 21 décembre 2015

Les applications doivent être soumises par courriel à jsc21@sfu.ca avec pour objet – Votre nom de famille et ICE 2016. L’application doit contenir les 3 documents suivants dans cet ordre et dans un seul fichier pdf. Toute application ne rencontrant pas ce format ne sera pas évaluée.

Les candidatures seront évaluées sur :

Un court Curriculum Vitae (pas plus de 2 pages) incluant les informations de contact, l’éducation, l’historique d’emploi, les publications les plus pertinentes, les présentations, les prix, subventions et bourses, les autres activités, la diffusion et les services.

Une déclaration de valeur d’une page décrivant la portée et l’importance du travail qui sera présenté et de la façon dont la participation à la réunion sera bénéfique pour le candidat.

Un estimé détaillé des coûts pour l’ICE 2016, indiquant les autres sources de financement, confirmées ou demandées.

Vous devez vous assurer qu’une lettre de recommandation d’une page de votre directeur ou d’un membre du département qui est familier avec votre recherche soit envoyée à jsc21@sfu.ca avec votre nom dans l’objet. Ce document doit être en pdf.

Les candidatures seront évaluées par le comité des prix étudiants de la SEC. Les gagnants seront avisés au plus tard mi-janvier (i.e. avant la date limite de soumission des résumés).

décembre 2, 2015/par Sean McCann

ESC Blog, Non classifié(e)

The joys of insects at dawn

When is the last time you got up at dawn to see some insects? Never? Well let me tell you, it is an absolutely fabulous time to get out and see what is really happening in the world. Everyone knows that the dawn is the time for going out to see birds, but the birds are really just a proxy for the insects! They are out foraging their little feathers off in an effort to provide their chicks with tasty tasty bugs!

The dawn hours offer the opportunity to see insects and spiders that are just waking up, still cool from the night. I take advantage of this to go out and photograph them, when they are still. I also use the beautiful natural light to my advantage in the pictures.

A gorgeous Enoplognatha ovata on some grasses in Richmond BC

Ammophila wasps are too active to shoot well in the day, but at dawn they are easy and beautiful subjects

Mixing the dawn light is easy with any kind of diffused flash. The sunlight is dim enough that a flash in close proximity to the subject can illuminate details that turn what would be a silhouette into a lovely shot.

The one danger is lens flare, but as instagrammers know, this makes a shot more « artistic ». I find I am often pleasantly surprised by some of the flare effects.

Large numbers of aggregating wasps may be reducing their individual vulnerability to those hungry birds…

The spiders often attempt crypsis rather than jumping off their webs. It works well for the arthropod photographer!

Coelioxys cuckoo bees are a welcome find anytime, and at dawn are super cooperative subjects!

Dawn light can also be used for highlighting hairs.

Dawn is an epehmeral time, and staying out with your subjects allows you to see them wake up and start their day.

juillet 9, 2015/par Sean McCann

ESC Blog, Non classifié(e)

Blog posts by students of Biol 202

The following is a guest post by Staffan Lindgren

When I started teaching Invertebrate Zoology in the mid-1990’s, students were required to write term papers as one of the tools for evaluation. With a fairly heavy teaching load, this approach became somewhat unmanageable given relatively high enrollment, in particular since I feel that it is important to provide detailed feedback to each student so they can improve on their writing skills. Depending on a student’s skill level, reading, editing and marking a paper can be rather time consuming. After a few years, I therefore reverted to delivering a strictly lecture/lab based course with midterm(s), quizzes and (lab and lecture) finals, essentially the way I had been taught. Two years ago, with considerable trepidation, I decided to step out of my comfort zone and try the blog format. This turned out very successful from a number of perspectives. The students really liked it, and I derived direct benefit by learning about organisms I would likely never have read or heard about. I also enjoyed marking these blogs, because a blog is shorter, less formal, and leaves a lot of room for personal style when compared to a term paper, while still retaining the requirements of coming up with a suitable topic, as well as finding and citing primary literature effectively.

While many of the blogs were about non-arthropods, a fair number of students chose members of this taxon to write about. In this blog, I highlight student blogs that may be of interest to ESC members.

The first blog by Santana Smith is about a group of marine arachnids that I know very little about, the sea spiders. In her blog, “Mating, Reproduction, and Courtship Behaviour of the Pycnogonids” she corrected that shortcoming to some extent. These are odd creatures, to be sure!

The second blog by Alana Garcia is also about arachnids, more specifically Opiliones or harvestmen: “Opiliones and Parenthood: The Rare Exception of Maternal and Paternal Care in Arachnids”. Some of these odd creatures have surprisingly sophisticated and fascinating brood care.

Roscoe Lenardt wrote about hornets “The Genus Vespa: Eusocial societies and vicious stings”. Every time I watch something about Vespa mandarinia I am happy that we only have the baldfaced hornet where I live!

Lena Richter looked at “The Camouflage of Praying Mantids”. Most entomologists are familiar with the orchid mantis, but did you know that Phyllocrania paradoxa nymphs imitate ants?

Favourites for many students (and many arachnologists as well I should imagine) are the jumping spiders. Jessica Leach discusses Portia species in her blog “Jumping spiders: sex among cannibals”. Portia jumping spiders have been described as among the most intelligent of all arthropods.

Danielle New was fascinated by the use of tiny wasps for biological control, which she described in “Trichogramma, a Living Insecticide?” One has to marvel at the ability of these tiny wasps to work for us.

Insects provide inspiration for art, and Nicole Tweddle discusses the use of caddis fly larvae to create jewellery in her blog “Caddisfly (Order Trichoptera) Larval Diversity: The Unlikely Jeweller”. This blog was of particular interest to me, because many years ago at a meeting of the Entomological Society of America, I purchased caddisfly-manufactured earrings for my wife. They were not as exclusive as the ones featured in this article, however.

Madison Wong wrote about the not-so-pleasant effects of centipede venom in “The effect of venom in centipedes.” An arachnophile and former Prince George resident (who described his hobby/business of breeding tarantulas as an interest that went terribly wrong) kindly used to show his animals to UNBC students. One of the few critters he would not handle was his giant centipede!

“Giant Weta” or Wetapunga, the enormous anostostomatid crickets of New Zealand, was the topic for Amandeep Bhatti. Many of these large, flightless insects are threatened and thus of great interest.

Warren Noronha wrote about another species of jumping spider, “Phidippus audax: The Most Daring Spider.” Phidippus species are quite impressive as jumping spiders go. Where I live we have P. johnstoni, a closely related species.

Maeghan Forster provides the first of the 2015 crop of blogs, writing about the fascinating reproductive biology of the emerald cockroach wasp “Eating Your Babysitters: Brooding Behaviors of the Emerald Cockroach Wasp.” I love the way students link behaviours to everyday life, albeit a tad gruesome in this case.

“What in the world is the obelisk posture”, was my first thought when Austin Bartell gave me his proposed blog topic. He explains how dragonfly make use of this posture in “The Obelisk Posture of Dragonflies (Order Odonata)”

Giant Scolopendra centipedes provided the topic for Brittany Fotsch. In “A giant in the under-foliage: Scolopendra gigantea” she ends by referring to centipedes as pets: “A 30 cm, 46-legged, bat-killing, venomous critter is not for everyone, but nevertheless even Amazonian giant centipedes need some TLC.”

T. Callander chose to write about the symbiosis of yucca plants and yucca moths in “Yucca moths and yucca plants: the mailman and the mansion” in his entertaining and informative blog, again with an analogy to human life.

Conrad Taylor’s blog “How I was out-fished by a spider” received a lot of attention when I tweeted the link some time ago. It differs somewhat from most of the other blogs because it is built around a personal experience, and I am sure that is the reason for the attention, at least in part. It certainly makes it an enjoyable read.

The use of transparency in a butterfly caught the interest of Erin Haugland, who wrote about “Greta oto: The Invisible Butterfly.” One of the adaptations to make this approach feasible is the presence of submicroscopic bumps change the refractive index of the wing to match the surrounding air. Who knew?

Arachnophobes in New Zealand probably won’t cry over “Latrodectus katipo: The disappearing cousin of black widow spiders,” written by Finch Ye. It is comforting to know that even a black widow species will have proponents willing to go to bat for them!

Ian Curtis wrote about “The Reindeer Warble Fly (Hypoderma tarandi): An Arctic Parasite,” an insect I knew a little about from my time in Sweden. I also got the opportunity to communicate with my Norwegian colleague Arne C. Nilssen, who gave us permission to use his fabulous photo of an adult fly. Arne did his Ph.D. research on bark beetles, which is how I knew him.

An assignment like this is bound to have at least someone looking at honeybees. Jared Peet wrote his blog “Apis mellifera: Un-bee-lievable Communication” about these important insects, and in a second course I taught, two students wrote honeybee related blogs.

Water striders are incredibly successful hemipterans with some very odd mating behaviours. In her blog “Water striders: Strange Mating Rituals and Adaptations,” Rebecca Lerch describes how females protect themselves against overly amorous males.

Another spider blog that attracted attention was “The diving bell spider: reversed sexual size dimorphism” written by Sunjeet Minhas. To my knowledge, the Eurasian Argyroneta aquatica is the only aquatic spider.

Jennifer Noonan wrote about bioluminescence in lampyrid beetles. In her blog “Fireflies: Bioluminescence” she even included a drawing she made of the chemical reaction.

Angela Tsang’s topic was one that really fascinated me. “Commensalism, Mutualism, or Somewhere on the Borderline: A Relationship between a Frog and a Spider” is about a tiny microhylid frog that lives with a tarantula, normally a predator of frogs! Finding an illustration of this was easier said than done, but the author of one of the source articles, Dr. Francesco Tomasinelli, gave us permission to use a fantastic photo.

Aphids have never been my favourite insects (sorry Simon Leather!) although I could have ended up working with them, early on courtesy of Dr. Jan Pettersson in Sweden. It isn’t an organism I would expect a student to pick, but Grant Usick found an interesting angle in his blog “Acyrthosiphon pisum: The little pea aphid that could.” Perhaps I have to reconsider?

Brooke Wiebe picked Acacia ants for her blog “Pseudomyrmex ferruginea: The ideal tenant.” I still remember a presentation by Dan Janzen about these fascinating little ants and how they have assumed the defense role of Acacia trees.

In my arachnid lecture, I have to highlight the net-casting or ogre-faced spider, of course. This prompted Fiona Raymond to write her blog “The Hunting Techniques of the Net-Casting or Ogre Faced Spider (Araneae: Deinopidae)”. Arachnophobes miss out on so much neat stuff!

For no particular reason, I left out several blogs about horseshoe crabs and Crustaceans. The Crustaceans covered were fiddler crabs, tongue eating isopods, trapeziid guard crabs, pistol shrimp, pom-pom or boxer crabs, tadpole shrimp, Dungeness crabs, and the goose barnacle. And that leaves out all the other interesting invertebrates, of which cephalopods were the most numerous – no surprise there! Anyway, many students exceeded my expectations by a wide margin, and I really believe that it was the format that gave them inspiration to go the extra mile. I am sure Dezene Huber (who will take over after I retire at the end of this year) will improve on the course. Nevertheless, the students deserve credit for a job well done! I hope you will read a few of these blogs, and that you will enjoy them.

juin 8, 2015/par Sean McCann

ESC Blog, Non classifié(e)

BioBlitz in BC’s beautiful Peace Region!

Do you have a good taxonomic knowledge of Canadian arthropods? Are you an awesome, champion collector? Do you want an excuse to spend a few days geeking out over lovely terrain and catching lovely wildlife? Well, the Biological Survey of Canada, the Royal BC Museum and the Yellowstone to Yukon Conservation Initiative want you to join them in a BioBlitz of the Peace Region, June 22-26!

If this sounds like your cup of tea, then read the full invitation here. Sign up by June 15!

Who knows? Maybe you will find something completely unexpected (like this ridiculous mite!)!

juin 2, 2015/par Sean McCann