Thursday, July 16, 2009
Scarlet Snake
A family brought in this Scarlet Snake (Cemophora coccina) that their cat attacked this summer to the Okeeheelee Nature Center where my roommate works. This is just one more reason why cats should be kept indoors. Not only do they hurt migrating songbirds but they also do a lot of damage to herp populations. Scarlet Snakes are found mostly in the Coastal Plain areas of the Southeast. The Florida subspecies of Scarlet Snake is Cemophora coccinea cocinea and is only found south of Central Florida. Their diet is mostly other reptile eggs.
Wednesday, July 15, 2009
National Geographic Article
Tuesday, July 14, 2009
Lunar Cycle
I read this article recently and wanted to share it in full. I find thing associated with the moon to be interesting. Enjoy!
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Amphibians Mate Under A Full Moon
Matt Walker, Editor, Earth News, BBC News 7/14/09
Amphibians around the world synchronise their mating activity by the full Moon, researchers have discovered.
This global phenomenon has never been noticed before, but frogs, toads and newts all like to mate by moonlight.
The animals use the lunar cycle to co-ordinate their gatherings, ensuring that enough males and females come together at the same time.
In doing so the creatures maximise their spawning success and reduce their odds of being eaten.
Details of the discovery are published in the journal Animal Behaviour.
Biologist Rachel Grant of the Open University was studying salamanders near a lake in central Italy for her PhD in 2005 when she noticed toads all over the road, under a full Moon.
"Although this might have been a coincidence, the following month I went along the same route every day at dusk and found that the numbers of toads on the road increased as the Moon waxed, to a peak at full Moon, and then declined again," she says.
A review of the scientific literature found little mention of any similar records, so Grant returned to the same site in 2006 and 2007 to survey the amphibians in more detail.
She then collated her data with a 10-year analysis of the mating habits of frogs and toads at a pond near Oxford, UK, collected by her supervisor Tim Halliday, and with data on toads and newts living in Wales collected by colleague Elizabeth Chadwick from Cardiff University, UK.
"We analysed the data, and found a lunar effect at all three sites," Grant says.
For example, the common toad (Bufo bufo) arrives at all its breeding sites, mates and spawns around the full Moon. The common frog (Rana temporaria) also spawns around the time of the full Moon.
"Newts also seem to be affected by the lunar cycle but the results are less clear," says Grant.
Newt (Lissotriton vulgaris, L. helveticus and Triturus cristatus) arrivals peak during both the full and new moons.
But "newts appear to avoid arriving at the breeding site when the Moon is in its third quarter. This could be because the Earth's magnetic field is highest at that time. More research is needed to clarify this," Grant says.
The researchers have also looked at historical data collected in Java on the Javanese toad (Bufo melanostictus) and found that it too mates by the lunar cycle, with females ovulating on or near to the full Moon.
"We now have evidence of lunar cycles affecting amphibians in widespread locations. We definitely think that Moon phase has been an overlooked factor in most studies of amphibian reproductive timing," says Grant.
"We think this may be a worldwide phenomenon. However, differences between species in ecology and reproductive strategy may mean that not all amphibians are affected in the same way. This is something we would like to investigate further."
Grant and her colleagues now hope to produce a statistical model that takes into account weather factors and other environmental variables such as geomagnetism, as well as the lunar cycle.
Making accurate predictions of mass amphibian movements is important in their conservation, she says. For example, roads could be closed at precise times to avoid cars killing thousands of mating frogs and toads.
"Given the current global crisis among amphibian populations, further understanding of [their] breeding behaviour is extremely important," she says.
Education Owl Update
Monday, July 13, 2009
Friday, July 10, 2009
Black-bellied Babies
Thursday, July 9, 2009
Alligator 1, Otter 0
Wednesday, July 8, 2009
Red-winged Blackbirds at Green Cay
Thursday, June 25, 2009
Moving Forward
This summer is proving to be full of adventure for me with only a few setbacks. One of those obstacles was overcome yesterday with the shipment of my new laptop. For those that remember my former computer was stolen from my house two months ago. It's taken me a little while to replace it but now I'm back in business. Which also means this blog should resurface with new posts.
Summer Jr. Naturalist camp 2008
So what have I been up to so far this summer. I've traveled to South Carolina, Orlando, and various haunts in South Florida. I went on a kick ass camping trip, have been fishing on a regular basis (really just feeding the fish not actually catching anything), and moved into a new house. Now July is almost here which means my summer Jr. Naturalist camp starts back up and I'll be in the full swing of things at work. The summer is proving to be one huge party and it's not nearly over.
Expect more updates soon!
Tuesday, June 9, 2009
Camden Hill State Park, ME
After a wonderful night of camping we woke up bright and early to do some hiking around Camden Hills State Park. Our first stop was a quick drive up to Mount Battie. This was the view from the top. Down below is the sleepy bay town of Camden. All the little towns along the Maine coast were filled with cute shops and great restaurants.
For our day hike we chose the Megunticook Trail which took us to the top of the 1385' mountain. Along the way we paused for all sorts of herps including the snake above and some toads. Near the last one third of the hike we took a nice stop by some waterfalls. After a little exploration we found some salamanders and even posed for a photo together.
The weather was perfect for hiking. We only had one base layer on and it felt perfect. Of course when we made it to the rock face at the top we did have to put our jackets on but otherwise, this really was the right time of year for trekking up the trail. The trail wasn't very steep and really the only difficult part was the last section that you see in the photo below where the trail became more of a rock hike.
All of our efforts paid off at the summit where we found an even better view of Penobscot Bay.
After soaking in Mount Megunticook and the view we trekked back down the trail. The Maine woods really are beautiful and much wetter than I imagined. On parts of our hike we had to cross boards so we didn't sink into the muddy trail.
Before leaving Camden Hills State Park we took a quick side trip to their shoreline. Rupp enjoyed exploring the tidal pools while I enjoyed just watching the waves come in and hit the rocks. We don't have many rocky coasts in the Southeast so I was very content to sit and enjoy my surroundings. It's not very often that we really take the time to just be somewhere without doing something. I even put my binoculars down for awhile and enjoyed my last moments at the park.



