Friday, May 18, 2007
Crunch time!
Today Audrey donned her swamp clothes and went out with Dr. Buddle for a whirlwind collection of the pitfall traps and malaise trap, as well as trying to find a few more specimens. Everyone was working incredibly hard on their presentations and papers (due on Saturday at 2pm!). I was in the lab all day, so all I have to show for it are some macro shots of our pinned bugs. Thanks to Etienne who lent me his camera with a sweet 150mm macro lens for these shots (even though his body was a Nikon :P)
Thursday, May 17, 2007
Lab Work
So today, we didn't do a field day, but we spent the day in the lab identifying all our bugs we had collected. The lepidoptera and odonata group worked on identifying species, and some of the species they had to differentiate between looked remarkably similar! The fish people were dissecting their parasite and identifying their fish as well. Lots of work, lots of stress, but still very cool. Kristen spent the day identifying spiders, and she is now the expert spider woman! Audrey also worked on separating the ants by morophospecies, so she is now the ant queen. Morophospecies are when you separate the ants by morphological characteristics. Identifying ants unless you are an expert is too difficult. I have it a shot and ended up with some species that ius only found in Australia, so we used morphospecies instead.
Wednesday, May 16, 2007
Graeme Hall: Muck Day
We thought yesterday was a mucky, swampy day. This one was just as bad. First, Dr. Kramer, or OMS (old man of the swamp) shows us how to get through the sedge habitat by wading waist deep in the sludge. Dr. Buddle in the mangroves showed us what the new fashion is - mud covered pants. He did keep his camera nice and dry, though! Today was a field day for our group to do insect collection in our focal habitats: mangrove and sedge. We mostly did it through opportunistic collection. We had a great time collecting our focal taxa, though we fell seriously short on one of them. We didn't get very many coleoptera (beetles), since it seems they are most effectively caught through flight intercept traps, which brings us to the malaise trap we set up. Malaise traps are designed for diptera and other flying insects that when they encounter something, they fly up. The only opening at the top is into a jar of ethanol, so we were able to collect flies, bees, wasps, and other things like that. Flight intercept traps are designed for things that fly and go down, such as coleoptera, and we all realized if we were to try and sample them, we would need a flight intercept trap. Next time! So, while slugging through the sludge in the sedge, while waist deep, I did manage to find a spider that had not been previously recorded on Barbados before. I found a dock spider, with an egg sack, which was pretty cool. Very large and hairy!
Tuesday, May 15, 2007
Graeme Hall: Swamp Day
Today is first field collection day. The beginning of the day was dedicated to game plan and out collection techniques. I may have my days mixed up, but there was one day where everyone had to go out in the field. Now, in the what to bring list - they said bring some clothes for Graeme Hall that you won't mind getting muddy. When they said muddy, they meant muddy. As you can see, the boys demonstrated proper swamp fashion. Tyler also demonstrates the art of zen lepidoptera and odonata collection. Or as he calls it: Oh-no-data.
Dr. Kramer worked with the fish group while Dr. Buddle worked with the two arthropod groups. We set out pit-fall traps, which are cups of ethanol set into the ground that bugs will walk into, fall in, and be preserved in the ethanol. The picture shows Dr. Kramer and the fish group trying to identify their bounty while puzzling over this weird growth on some of their fins. The growth actually turned out to be a parasite, and when you looked at it under the microscope, it sort of pulsated and moved - straight out of an alien movie!
Monday, May 14, 2007
Graeme Hall: Non-swamp day
So today was our introduction to Graeme Hall and decide on a project day. We were meeting various government people, so were instructed to dress semi decently. First was Graeme Hall - a nature sanctuary owned by a Canadian. In this reserve there is the last remaining mangrove habitat, and we were told of a petition to make Graeme Hall a national park. The problem is a developer wants to put a water park right next door to Graeme Hall, and so some people got together to form an NGO designated to make Graeme Hall a national park. Due to the political implications and complications, our project ended up being very information based as opposed to actually making a recommendation. However, I do think we gathered some interesting information through this project.
We also went to the Ministry of Agriculture, where the entomology sector showed how they were using bioloigcal methods to try and control crop pests. It was very interesting, and alternatives to pesticides are almost always a good thing.
Then it was brainstorm time to try and find a project. Dr. Buddle acted as our moderator, and we actually ended up with five sub projects. One group would do research on biodiversity and its importance and the effects of conservation programs in other countries. Three groups looked at fauna in Graeme Hall, collecting and identifying species, and the last group worked with molecular biological techniques to be able to process and add to the DNA barcoding initiative. The three fauna groups were fish, lepidoptera and odonata (butterflies, dragonflies, and damselflies), and terrestrial arthropods.
To finish is an example of our now superb pinning skills which will be put to good us in this project! The bug in the top right was a carpenter bee. It was found dead - can you imagine that thing actually flying around?!
Sunday, May 13, 2007
Leatherback Turtles
So, as you can tell, I am about week behind in getting my posts up. However, in retrospect, this day that I am currently writing about has to be the highlight of the trip. First, we met up with this very cool guy, Barry, and some of his assistants and he explained to us how the Sea Turtle Conservation project was started and what. They had found what they though was a nest by the little tracks to the water. On Morgan Lewis beach, the nesting turtles are the Leatherback turtles.
So, as part of their efforts, every nest they find is excavated, and every non hatched egg is opened to see what stage of development it was in. The picture shows an egg, and you can see the embryo and yolk sack. When they are fully developed, they use their egg tooth to get out of the egg. They then manage to get out of the sand (the females lay their eggs in nests that are a couple feet deep), and using the light reflected from the ocean, they make their way to the ocean. While they were digging out the nest, they found a coupe that hadn't made it, but we did find one live one. The group named him Zeus, and at dusk, we put him in the sand and cheered him on as he made his (roundabout) way to the ocean. Because of the tourist development on the west coast of Barbados, the turtle project get calls from people saying there are a bunch of baby turtles in the lobby. The bright lights of the hotels disorient the baby turtles, so they think they are heading to the ocean when they are in fact heading the opposite direction.
So, after a BBQ on the beach - nothing like sand as a condiment to the burgers - we accompanied tome volunteers on the turtle walk. Female turtles come up at night to lay their eggs. On the way back, as we were literally ready to head back to the cars, someone found some tracks. We were luck enough to see two of thes HUGE turtles. The carapice (shell) length on one of the females was 1.67 metres long! It was very cool. If you ever have the chance to see these guys, I highly recommend it! June is apparently peak hatching season for the beach on the side of the island where the research institute is located. Can't wait to watch the babies!
Subscribe to:
Posts (Atom)