Bog spiders: family composition and sex ratios

This is the second post by Honour’s undergraduate student Kamil Chatila-Amos – he has been busy working on identifying LOTS of spiders from bogs of northern Quebec. His first blog post introduced his project: this one gives a glimpse into the data…

My project is focused on studying spiders from bogs in the James Bay region of Quebec. Five bogs along the James Bay highway were sampled with pan traps every week for four sampling periods. In the full project I’m looking at how abiotic factors (i.e. pH, water table, latitude, etc.) and the plant community affect the arachnid community composition. For now, let’s look at how the spider families are distributed in these sites:

bogSpidersThe first thing that might strike you if you are familiar with the area and its spider fauna is that in 4 out of 5 sites, neither Lycosidae (wolf spiders) nor Linyphiidae (subfamily Erigoninae) are the most abundant family. Previous studies in similar habitats tend to find a much greater proportion of those two taxa (Aitchison-Benell 1994; Koponen 1994). All sites except the first have more Gnaphosids than Lycosids. However, the breakdown within families is very different. Whereas the Lycosids are represented by 19 species, there were only five species within the Gnaphosidae. Even more impressive is that one Gnaphosidae species represents 99% of the family. Indeed, Gnaphosa microps alone represents a fifth of all arachnids I collected.

I’ve come to like Gnaphosa microps a lot! The family Gnaphosidae is pretty easy to identify thanks to their long and separate spinnerets, colour and eye placement. Even the palps, which are unique to species, are fairly easy to recognize. It ranges in size from 5.4 – 7.1 millimeters which is a large enough size so it isn’t a hassle to manipulate.

Gnaphosa microps, seen from above. Photo from the Biodiversity Institute of Ontario through Barcode of Life Data Systems

Gnaphosa microps, seen from above. Photo from the Biodiversity Institute of Ontario through Barcode of Life Data Systems

Gnaphosa microps is by no means a star of the spider world but we still know a fair bit about it. It is a holarctic species meaning it can be found in almost all of the northern hemisphere, even as far as Turkey (Seyyar et al. 2008). It is usually found in in open boreal forests, alluvial meadows and bogs. A nocturnal species, it spends its days in a silk retreat under moss or debris and hunts at night by catching prey on the ground (Ovcharenko et al. 1992). Even though sampling has been done very near my sites and in similar habitats (Koponen 1994) I still haven’t found another study where it was the most abundant species.

Another interesting tidbit about this species is just how skewed their sex ratio is. According to my data, males outnumber females almost 10 to 1! Now this does not mean it is always like this in nature, this ratio can be explained by sexually dimorphic behavior. This means that the males would behave differently than females in a way that would increase their odds of falling into traps. Indeed, according to Vollrath and Parker (1992) spider species with sedentary females have smaller, roving males. And like their model predicts the G. microps males are a bit smaller than the females.

Sex ratio of Gnaphosa microps, collected in bogs

Sex ratio of Gnaphosa microps, collected in bogs


So what’s next? I still need to retrieve the COI barcode of all my species and that will be possible thanks to the University of Guelph’s Biodiversity Institute of Ontario. This is to make sure my identifications are indeed correct. As a first time spider taxonomist it’s great to be able to confirm my work in a way that still is not widely available. Today I received the plate in which I’ll load the spider tissue and I am amazed at how tiny it is. I guess they just need 2mm per spider but I still expected it to be much more impressive. Hopefully I don’t get any nasty surprises once the DNA data comes back, although some of those tiny Linyphiids did give me a pretty bad headache…



Aitchison-Benell CW. 1994. Bog Arachnids (Araneae, Opiliones) From Manitoba Taiga. Mem. Entomol. Soc. Canada 126:21–31.

Koponen S. 1994. Ground-living spiders, opilionids, and pseudoscorpions of peatlands in Quebec. Mem. Entomol. Soc. Canada 126:41–60.

Ovcharenko VI, Platnick NI, Sung T. 1992. A review of the North Asian ground spiders of the genus Gnaphosa (Araneae, Gnaphosidae). Bull. Am. Museum Nat. Hist. 212:1-92

Seyyar O, Ayyıldız N, Topçu A. 2008. Updated Checklist of Ground Spiders (Araneae: Gnaphosidae) of Turkey, with Zoogeographical and Faunistic Remarks. Entomol. News 119:509–520.

Vollrath F, Parker GA. 1992. Sexual dimorphism and distorted sex ratios in spiders. Nature 360:156–159.

Insect herbivory in fragmented forests: it’s complicated

I’m excited to announce a recent paper to come out of the lab, by former PhD student Dorothy Maguire, and with Dr. Elena Bennett. In this work, we studied the amount of insect herbivory in forest patches in southern Quebec: the patches themselves varied by degree of fragmentation (ie, small versus large patches) and by connectivity (ie, isolated patches, or connected to other forest patches). We studied herbivory on sugar maple trees, both in the understory and canopy, and at the edges of the patches. Our research is framed in the context of “ecosystem services” given that leaf damage by insects is a key ecological process in deciduous forests, and can affect the broader services that forest patches provide, from supporting biodiversity through to aesthetic value. Dorothy’s research was part of a larger project about ecosystem services and management in the Montérégie region of Quebec.



Dorothy Maguire sampling insects in the tree canopy (Photo by Alex Tran)

The work was tremendously demanding, as Dorothy had to select sites, and within each site sample herbivory at multiple locations, including the forest canopy (done with the “single rope technique). Dorothy returned to sites many times over the entire summer to be able to assess trends over time. Herbivory itself was estimated as damage to leaves, so after the field season was completed, thousands of leaves were assessed for damage. The entire process was repeated over two years. Yup: doing a PhD requires a suite of skills in the field and lab, and there is no shortage of mind-numbing work… Dedication is key!

As with most research, we had high hopes that the results would be clear, convincing, and support our initial predictions – we certainly expected that forest fragmentation and isolation in our study landscape would have a strong effect on herbivory – after all, our study forests varied dramatically in size and isolation, and herbivory is a common and important ecological process, and insect herbivores are known (from the literature) to be affected by fragmentation.



The landscape of southern Quebec. Lots of agriculture, some patches of forest.


However, as with so much of ecological research, the results were not straightforward! “It’s complicated” become part of the message: patterns in herbivory were not consistent across years, and there were interactions between some of the landscape features and location within each patch. For example, canopies showed lower levels of herbivory compared to the understory, but only in isolated patches, and only in one of the study years! We also found that edges had less herbivory in connected patches, but only in the first year of the study. Herbivory also increased as the season progressed, which certainly makes biological sense.

So yes, it’s complicated. At first glance, the results may appear somewhat underwhelming, and the lack of a strong signal could be viewed as disappointing. However, we see it differently: we see it as more evidence that “context matters” a great deal in ecology. It’s important not to generalize about insect herbivory based on sampling a single season, or in only one part of a forest fragment. The story of insect herbivory in forest fragments can only be told if researchers look up to the canopy and out to the edges; the story is incomplete when viewed over a narrow time window. In the broader context of forest management and ecosystem services, we certainly have evidence to support the notion that herbivory is affected by the configuration of the landscape. But, when thinking about spatial scale and ecosystem processes, careful attention to patterns these processes “within” forest patches is certainly required.

We hope this work will inspire others to think a little differently about insect herbivory in forest fragments. Dorothy’s hard work certainly paid off, and although the story is complicated, it’s also immensely informative and interesting, and sheds light on how big landscapes relate to small insects eating sugar maple leaves.


Maguire et al. 2016: Within and among patch variability in patterns of insect herbivory across a fragmented forest landscape. PlosOne DOI: 10.1371/journal.pone.0150843


Natural history of canopy-dwelling beetles: More than just ‘Fun Facts’

This is the second post by undergraduate student Jessica Turgeon – she’s doing an Honour’s project in the lab; here’s her first post that introduces the project.  Since that first post, Jessica has spent a LOT of time at the microscope, and has identified over 120 species of spiders and beetles from forest canopies and understory habitats.

Every species has a different story to tell and each one of these is equally interesting. I sometimes think about natural history as ‘fun facts’: something interesting about an organism (or species) to tell children so that they can appreciate nature. As my time at McGill progressed and my knowledge of the natural world deepened, I realized that the ‘fun facts’ are actually built upon a very strong scientific foundation, and can help us understand results of research projects. Natural history can sometimes be reduced to ‘fun facts’ but it’s a whole lot more than that!

The European Snout Beetle on a pin.

The European Snout Beetle on a pin.

I decided that perhaps I should look at the natural history of some of my species and maybe this would shed light on some patterns that I’m seeing within the data. The most abundant beetle species was Phyllobius oblongus (Curculionidae) with 69 individuals. Interestingly, we only collected this species in the first half of our sampling season and they were mainly collected on black maple and sugar maple trees. To try and understand why this is so, I turned to the species’ natural history, and to the literature.

These weevils tend to eat fresh leaf shoots and prefer the soft leaves found on maple trees. Once the maple’s leaves are fully-grown, P. oblongus moves on to plants with indeterminate growth, like raspberry bushes (Coyle et al. 2010). This corresponds exactly to our data: the beetles were found on our black and sugar maples during the beginning of summer and then they taper off as the season progressed!

Beetle data: the European Snout Beetle was only collected during the beginning of the season.

Beetle data: the European Snout Beetle was only collected during the beginning of the season.

To make this even more interesting, P. oblongus is an invasive species. Its common name is the European Snout Beetle and was accidentally introduced into North Eastern North America in the early 1900s. While most invasive species are a cause for concern, both the Canadian and American governments largely ignore this species. It may inflict some damage to trees but not enough to be worried about. They’re more annoying to researchers than anything since they congregate in the trees in large numbers!

The second most abundant beetle species in the collections was Glischrochilus sanguinolentus (Nitulidae). This species is native to Canada and rather abundant. Species in this genus are called sap beetles but this species in particular is more commonly called a picnic beetle. Large groups of G. sanguinolentus swarm to picnics since they are attracted to sweet food, which ruins the picnics. In nature, they feed on the sap produced by injured trees – hopefully not an indication that the trees we were climbing were damaged!

The natural histories of species open new doors to understanding how organisms live and interact with one another. I thought that it was strange that P. oblongus completely disappeared from my samples midway through the sampling season and its natural history explained why this was so. Picnic beetles eat the exuding sap of an injured tree so in the future I’ll be on the lookout so that I don’t accidentally climb a broken tree! So really, natural history is more than just ‘fun facts’; it helps us understand patterns and to better understand how our natural world works.


Coyle, D.R., Jordan, M.S. and Raffa, K.F., 2010. Host plant phenology affects performance of an invasive weevil, Phyllobius oblongus (Coleoptera: Curculionidae), in a northern hardwood forestEnvironmental entomology,39(5), pp.1539-1544

Evans, A.V., 2014. Beetles of eastern North America. Princeton University Press.

Tips for managing a research lab

Running a research lab* isn’t easy. I learned this the hard way last fall when I performed rather poorly on my lab safety inspection. At the time it seemed to be a low priority: cleaning up the lab always seemed less important compared to, for example, having a lab meeting. We have since done a major lab clean-up, and we are back on track (phew!), but the experience has made me think about the skills needed to run a lab. Hopefully this is of interest to some of you, especially early career researchers (ECRs), but I would also like experienced researchers to wade with comments and tips. This post will be more about the “nuts and bolts” of running a lab, but perhaps a future post can be about broader philosophies around being the head of a research lab.


Part of my lab – AFTER cleaning.

Human resources

There are people in a lab. This means, as the head of a lab, you need to pay attention to human resources. This might be practical kind of stuff, like signing expense reports, or making sure students are getting paid when they are supposed to. But there are also many more complex things to think about, such as helping resolve arguments, or helping students through difficulties. You need to learn to listen, you need to navigate social dynamics, and be a good communicator. Make your expectations clear, and be sure that everyone is well aware of their roles and responsibilities. Work on ways to have a productive AND fun lab. Be sensitive to everyone’s different needs, and be open to change – operate on a principle of kindness. You will likely find yourself navigating some tricky situations so be sure to get help when you need it: there may be training available, or perhaps ask your Chair or a colleague about advice on being a good manager of human resources.


Running a lab is very much about being organized. There has to be a “plan” for all the different supplies, and space for everyone to store their samples, find the ethanol, or grab new Petri dishes. From the start it’s important to think about space needs in the long-term – anticipate how the lab might change in the future, and make sure there is room to grow. People need to feel that they have a “home” in the lab, whether it’s a desk or piece of a lab bench, and this requires careful assessment of space. I personally struggle with sample storage, and seem to squeeze old samples into various drawers, with a promise of getting rid of them (or putting them in long-term storage) after students have published their work. That promise is mostly broken, as it it easier to just store stuff and forget about it. ECRs: avoid this mistake! Stuff accumulates far too quickly. Be sure to label things too, including where to put supplies.


Safety and training

Don’t drink from the beakers; broken glass is dangerous. Stay on top of the safety rules at your institution: it’s easy to miss those emails, but as I learned, they are important. Top-down guidance about safety will show the lab members that safety is a priority not an afterthought. Know where to store chemicals, know about the eye wash stations, and make sure the first aid kit is stocked and ready. Know what needs to get stored where, and be ready when there is a call for hazardous waste disposal. Learn about MSDS, and be on top of the chemicals that may be present in your lab. As the head of a lab, you are indeed responsible for making sure your lab members have the appropriate training in the context of lab safety: whether it be WHIMIS, research ethics, or wilderness first aid, get your students signed up, and pay for the training. Don’t shirk this essential responsibility.



As the head of a lab, your name will likely be on all the research permits, and depending on your field of study, this can be a very big deal, and complicated. From collecting permits to animal care to biohazards, you need to guide your students through the permit process, from application to final reports. You have to be aware of deadlines, and know the ins and outs of the different requirements, especially when your work might cross jurisdictions. This can take an inordinate amount of time, but it requires the time commitment: lacking a permit can stall an entire research program. It’s essential to be proactive and prepared for permits. I certainly get my students to write the bulk of their own research permits, but a manager of a lab needs to facilitate this process.

Budgets and supplies

Running a lab means making sure there is a budget (i.e., you need a research grant!) to buy light bulbs for the microscope, flagging tape for field work, or medium for the agar plates. You need the money, and you need to know the process. The latter is not trivial: at my University some supplies are best bought using an internal purchasing system. Other places need just a credit card, or perhaps a purchase order. There are so many systems to learn, and each one probably needs a different password. It’s confusing and frustrating, and you have to stay on top of it. I keep a special file with all the details written out, and a hard-copy folder with old invoices – this way I can make sure to but the right sizes of things. Consistency is supplies is rather important!


Here are some things that have occurred in my lab over the years: weird smells from the sink. Lack of heat. Leaks from the ceiling. Power failures. Spider escapes**. Failing fridge. Failing freezer.

And the list goes on… Running a lab can be a lot about troubleshooting – you need to figure out who to call for what problem, and find a speedy resolution – otherwise you let down your grad students. Make a list of key people to get to know, from facilities to the local safety officer. Even better, post the list up in the lab, next to the telephone.


Ok, so there are certainly more things to know about running a lab, but hopefully the list provided is a start. Here’s the catch: almost everything I learned about running a lab was learned on the job. Despite attending some required workshops at the start of my career, I did not learn any real skills about running a lab. I was not trained to run a lab. Scientists must be taught to manage a lab.

That is a problem because a failure to run a lab properly has significant consequence for a lot of people! My students depend on the supplies that I have to buy, and they need to know what to do if there’s a chemical spill. Thankfully I had some good mentors when I was a grad student, and I managed to figure a lot of things out. However, I do think Universities need to do a better job helping hone the skills needed to run a lab; in many research fields, a successful academic career really depends on having a smooth-running lab, anything that can be done to help prepare ECRs for this would pay off.

In sum, I’m certainly a work in progress. Although I have some skills in research, I know that running a lab can be a real challenge for me, whether it’s forgetting to order supplies or checking the eyewash station weekly. I have learned to delegate a bit, and my grad students help me immensely at maintaining a safe and clean lab environment. I sure hope some of you can learn a bit from my own trials and tribulations… And please educate yourself, plan ahead, and know what it takes to run a lab well before you get the keys.


Here are some other resources I’ve come across, related to managing a lab: from Genome Web, ASBMB, a post by Matt Welsh, and a Reddit thread on the topic



**Sometimes we work with live spiders, on various projects. There have been times when they haven’t been where we left them. Oops.

Will spiders bite my dog?

I field a lot of questions about spider bites, and I have argued that spider bites are exceedingly rare (for humans). But what about our pets? Do our furry friends get bitten by spiders? If they get bitten, how do they react? Let’s look at this, move beyond anecdotes, and see what science has to say on the topic!

Can spiders bite my dog or cat?

The short answer to this is: YES. Some spiders are physically capable of biting mammals, including dogs and cats.


This is my dog, Abby. Should she be scared of spiders?

The longer answer is that we really don’t know about this for the vast majority of spider-pet interactions, and even if spiders can bite mammals, I would argue that such events are relatively uncommon. Spiders certainly don’t hunt dogs or cats, and when bites do occur, they are likely quite accidental. Your puppy Ralph can be quite energetic and rambunctious, and stick his snout into a dark corner which may be home to an arachnid. I’ve certainly seen my cat “play” with insects and spiders, and ping-pong an arthropod across the kitchen floor. However, we certainly have to get a little lucky to see an actual spider-pet interaction, and dogs and cats can’t tell us whether they have been bitten by a spider. Proper verification of any bite requires evidence.

In some cases, the evidence isn’t in dispute, such as the paper by O’Hagan and colleagues who state quite clearly in their peer-reviewed paper:

Two 9-week-old Chihuahua pus weighing 960 grams and 760 grams were seen to be attacked and bitten by a large black spider. The spider was killed” (O’Hagan et al. 2006).

Right: the puppies were seen to have been bitten by a spider, and presumably the pet-owners know what a spider looks like. Also, that paper was co-authored by a well-known Arachnologist, Dr. Raven – having an arachnologist involved in these studies is important, and gives credibility to the incident. This is a good example of a verifiable interaction between dogs and spiders.

There’s another detailed paper by Isbister et al., outlining spider bites (in the family Theraphosidae, a family of Tarantula spiders) in humans and dogs: their evidence isn’t in dispute either, and in two cases, the human was bitten just after the dog was bitten. That’s pretty clear!

Without clear evidence, however, it becomes tricky: there’s a case report of a Brittany spaniel being brought to a hospital, with “swelling on its muzzle, left of the midline” (Taylor & Greve 1985). This became a ‘suspected’ case of loxoscelism, and assumed by the authors to be caused by the brown recluse spider. However, diagnosis of loxoscelism is very difficult, and other more probably causal agents could be investigated. Stated another way: it may not be the spider. Don’t blame the spider without adequate evidence. As Rick Vetter states on his excellent website:

There are many different causative agents of necrotic wounds, for example: mites, bedbugs, a secondary Staphylococcus or Streptococcus bacterial infection. Three different tick-inflicted maladies have been misdiagnosed as brown recluse bite…” (Rick Vetter, accessed Feb 9 2015)

It’s also very tricky to look at a ‘wound’ on a pet and determine whether or not a spider was involved. I would suggest if there are multiple wounds, or lacerations, multiple bumps and bruises, it is unlikely to have been caused by a spider, and other more likely causal agents should be investigated (e.g., punctures, skin reaction to something, or perhaps an insect sting, or fleas).

So, bottom line: although I think direct interactions between spiders and our pets are relatively rare, spiders are certainly capable of biting our dogs or cats.


Do cats and spiders mix?

What happens if my pet is bitten by a spider?

If there is clear evidence that a spider bit your pet, there are really only two outcomes: nothing will happen (or your pet may exhibit mild reactions that may not be immediately obvious), or there will be clear, definable symptoms, and these may lead to more serious consequences.

I think the first scenario is more common than the latter, largely because we just don’t have a good way of tracking the frequency of spider-pet interactions, and as is the case with humans, the vast majority of spiders probably aren’t venomous to our pets. Our pets certainly get ‘mildly’ sick all the time – I think of the times that my dog got an upset stomach, and I always assume she tracked down some ‘snacks’ when on an off-leash run (I think she is quite fond of rabbit droppings…).

Science does provide us some data about more serious reactions when our pets do get bitten by certain spiders. The paper by Isbister et al., from 2003, is quite detailed, and gives case studies of a number of verified bites by spiders on humans and canines in Australia. Here’s the alarming part:

There were seven bites in dogs, and in two of these the owner was bitten after the dog. In all seven cases the dog died. In one case… the Alsatian died within 2 h of the bite. In two cases small or juvenile dogs died in less than an hour…” (Isbister et al.)

In this paper, the effects on humans were relatively minor, but this was not the case for our furry friends – reactions were severe and fast and resulted in death. The poor little Chihuahua pups mentioned earlier were equally unlucky, as reported by O’Hagan et al. Although both of these studies were from Australia, and involved only one family of spiders, it’s certainly scientifically interesting that canines were affected so strongly, and their reactions provide opportunities to further research the components of spider venom (e.g., see Hardy et al 2014).

There is also some evidence that cats may be affected by spider venom: research reported by Gwaltney-Brant et al, and Hardy et al, stated that toxicity studies result in fatalities of our feline friends:

Cats are very sensitive to the effects of widow venom. In one study, 20 of 22 cats died after widow-spider bites, with an average survival time of 115 h. Paralysis occurs early in the course; severe pain is evidenced by howling and other vocalizations…” (Gwaltney-Brant et al.*)

That’s pretty grim. Interestingly, this case reports on envenomation by widow spiders in the genus Latrodectus (e.g., the genus that includes all the black widow spiders that occur in North America) – these spiders are relatively common in some habitats, and can certainly live in proximity to humans. Looking at Australia again, Hardy et al. state that cats are seemingly unaffected when bitten by female funnel-web spiders in Australia. So,  effects of spider venom on cats and dogs differs depending on the type of spider, and even our pets aren’t likely to respond the same way to different kinds of spiders. Clearly, it is difficult to generalize about any of this!


Black widow spider – bad for cats? (photo by Sean McCann)

In sum, I have presented some details about spiders and how they might interact with our beloved pets. It’s fair to say that our pets certainly may get bitten by spiders, but overall I would argue such interactions are relatively rare. However, dogs and cats are certainly not immune to spider venom, and there is evidence to suggest they might have strong negative reactions to spider bites.

Despite this, I don’t see this as reason to panic or start stomping on any arachnid that wanders across your living room floor. The evidence we have is still relatively limited, and we just don’t have much information about effects of venom on pets, for those spiders that commonly inhabit our homes. I also think the lack of evidence is important to mention: if our pets were getting bitten by spiders on a regular basis, there would be more papers on the topic, and certainly more cases where anecdotes made the transition to evidence.

I think it’s possible to love your pets AND be an arachnophile. That’s certainly how I live my life.

[A BIG thanks to Maggie Hardy, Daniel Llavaneras and Catherine Scott, for helping point me to literature on this topic]


Hardy, M.C., J. Cochrane and R.E. Allavena (2014). Venomous and Poisonous Australian Animals of Veterinary Importance: A Rich Source of Novel Therapeutics. Biomed Res. Intl. doi: 10.1155/2014/671041

Isbister, G.K. J.E. Seymour, M.R. Gray, R.J. Raven (2003). Bites by spiders of the family Theraphosidae in humans and canines. Toxin doi:10.1016/S0041-0101(02)00395-1

Gwaltney-Brant, S.M., E.K. Dunayer and H.Y. Youssef. (2007) Terrestrial Zootoxins. Ch. 64 in Veterinary Toxicology (Edited by R. C. Gupta).

O’Hagan, B.J., R.J. Raven, and K.M. McCormick (2006) Death of two pups from spider evenomation. Aust. Vet. J. 84: 291

Taylor, S.P. and J.H. Greve. (1985) “Suspected Case of Loxoscelism (Spider-bite) in a Dog,” Iowa State University Veterinarian: Vol. 47: Iss. 2, Article 1.


*I was not able to access or read the original paper upon which this statement is based (Peterson and McNalley 2006 Spider evenomation: black widow, in Small Animal Toxicology, 2nd edition)

© C.M. Buddle (2016)

Bog spiders: a serendipitous research project

This is a guest post, written by an Honour’s undergrad student in the lab, Kamil Chatila-Amos. It’s the first of two posts about his work, and the goal of this post is to introduce Kamil and his research project. 

Research can be serendipitous and spontaneous, and that’s certainly the story of how my honour’s project started! I spent last winter working on howler monkeys in Panama (which is a story in itself) and although I adored every second of it, it certainly made me out of touch with the McGill world. When I came back, most of my friends had found themselves a summer research job and even an honours supervisor for the upcoming semester.

So there I was, barely a week after my return, erratically filling out online job applications in the lobby of one of our buildings. I was looking at all kinds of opportunities: herbarium employee in Edmonton, ichthyology assistant in Wisconsin, plant surveying in Vaudreuil, bird surveys in Ontario, insectarium employee in Montreal. I was applying to anything and everything that was still available. Little did I know that the arthropod ecology lab is right next to the lobby… Chris walked by, saw me and stopped to chat. (Well it’s more accurate to say he talked to me while quickly walking to his next meeting)*. Turns out, a student of Terry Wheeler (another entomology Prof. at Macdonald campus), Amélie Grégoire Taillefer, was going to post a job online that very afternoon! She was looking for a field assistant to help her catch flies in bogs in the James Bay area.

A couple days later I was northern-bound! A 15 hour drive north of Montreal is the town of Matagami and about 30 km north of there is Lake Matagami, along which we were staying. In a yurt. A yurt!!! Basically, a large round tent of Mongolian origins. They’re big and this one had a minimal kitchen and shower. But the fact remains that it’s a tent with the isolative properties of canvas. It got pretty cold those first couple weeks and dropped below freezing a few nights. At least it had a fireplace. (It’s actually a great place for people wanting to explore that area of Québec and the owners are wonderful. Go check them out at


The work itself was great. The first week, we explored the area for suitable bogs to install her pantraps. That’s when I realized how awesome bogs are. There are so many things to eat in bogs! Cattails, cranberries, Labrador tea, cloud berries, chanterelles, boletes, black flies…

For the remainder of the trip two days a week were spent visiting our five sites and harvesting the pantraps filled with flies, dragonflies, crickets, spiders and the occasional putrid mouse. The following two or three days we would sort through the samples, separating the lower flies (Nematocera) from the rest.


Ready for some serious bog-sweeping.

After the first week I couldn’t help but notice just how many spiders we were catching. Mostly out of pity I think, I decided to sort out the spiders as well. I felt bad throwing them out… Fast forward to five weeks later and I’m heading back to Montreal with a bagful of vials filled with dead spiders. (My roommates were not very fond of having them in our freezer).

A few weeks later I set up a meeting with Chris and essentially barged into his office with the spiders to ask to work in his lab. It took a while (and quite a bit of convincing) but here I am, sorting through spiders and writing blog posts!

The research project we structured has two components. The first part will look at how the community composition of spiders varies between the five sampled bogs. Second, I’m lucky enough to have the opportunity to try DNA barcoding using COI markers. This part remains very blurry right now**, but I’m very excited to see where it leads.


Kamil hard at work in the lab!

If it weren’t for serendipity I would not have gone to James Bay this summer. And if it weren’t for being spontaneous, I would not have sorted out the spiders and would not be working in Chris’ lab right now. But spontaneity does have its down sides. I didn’t plan far enough ahead** and in hindsight, I should have collected some insect orders to be able to do a more in depth ecological analysis.


* um, yes, I spend a LOT of time in meetings, and often have discussions and chats with student on my way to and from those meetings!

** for what it’s worth, research is often blurry, and planning ahead isn’t always possible!

Summer in the trees: Undergrad research on canopy spiders and beetles

Note: this post is written by undergraduate Honour’s student Jessica Turgeon, who is a member of the arthropod ecology laboratory. This post is part of the requirements for her project, and is an introduction to her research.

I’ve always been interested in nature and the environment but was never a big fan of insects. As time went on and I learned to appreciate all organisms big and small I realized that I didn’t really have a preferred “pet taxon” but rather was interested in ecology and community structure. I found others that my interests were shared with other members of the arthropod ecology lab, and I was able to start an Honour’s project in the lab earlier this fall.

Using a beat-sheet in the tree canopy, to collect arthropods

Using a beat-sheet in the tree canopy, to collect arthropods

I was given an opportunity to do an internship at Kenauk Nature, a 65,000-acre plot of land near Montebello, Quebec. This property is primarily used for the hunting and fishing industries, but they are branching into scientific research. Kenauk was keen to support three McGill interns to complete the Black Maple project, the pilot project for Kenauk Institute.

The Black Maple project revolves around black maples, since Kenauk is the only area in Quebec to have a black maple stand. The project consisted of three sub-projects, one for each intern and each project dealing with a different taxon. While the two other students worked on plants and birds, my project was about arthropods and their diversity in Kenauk. We wanted to characterise the community structures of beetles and spiders based on vertical stratification and tree species: this involved tree-climbing!

Jessica - getting ready to climb up!

Jessica – getting ready to climb up!

During the summer, I looked at abundance data and concluded that beetles were more abundant in the upper canopy and that spiders were more abundant in the understorey. This internship transitioned into my Honour’s project, where I plan to look at species richness and functional diversity to answer my questions on community assemblages. To my knowledge, this has never been done at Kenauk Nature and would provide great baseline data for the owners of the property.

We sampled in three sites, each containing three trees. Each site had one sugar maple (Acer saccharum), one black maple (Acer nigrum) and one American basswood (Tilia americana). Within each tree we sampled five times: twice in the understorey, once in the middle canopy and twice in the upper canopy. We also used two different types of traps: beat sheets, an active technique, and Lindgren funnels, a passive technique. Both trap types are specialized, with beating more tailored towards spiders and Lindgren funnels invented to collect beetles. When beating a branch, the arthropods fall on a 1m2 sheet and are then collected whereas Lindgren funnels are hung in a tree and passively collect arthropods that fly into it.


As part of our job, we learned how to use a single ropes climbing system, a one-person method of using ropes to climb a tree. All three interns caught on quickly and it easily became our favourite part of the job. However, we did have to sort through the samples, a job requirement that wasn’t nearly as fun as climbing trees. But this is what happens in ecology: you romp around in the woods to collect your data then spend time in the lab analysing them. It was nice to experience this first-hand and I must say, I liked it and am looking forward to future projects like this.

Now that the summer is over and collection is completed, I spend all of my free time in the lab identifying beetles and spiders. All of the beetles are identified and about half of the spiders are identified. From this work, Kenauk Nature can proudly say that the property supports 24 families representing 117 species of beetles! Once the Kenauk Institute officially launches, more rigorous research can be done to try and increase these numbers.

Learning Taxonomy... spider drawings (of male palps) help.

Learning Taxonomy… spider drawings (of male palps) help.

All in all, from the sampling in the summer to the identification in the lab, this has been a great experience. Here’s to hoping the second half of my honours project will be as equally fun and challenging as the first half was! Stay tuned for a blog post to be published in the spring of 2016: it will summarize the main results from this Honour’s project.