My How You Have Grown!

Black-Black-Green (KKG), fondly called Keg, was first captured 24 December 2014. He weighed 250 grams, and measured 15 cm from snout to length of his body. His full tail was 34.6 cm in length.

On 21 July 2015, I recaptured KKG. He only has 7.3 cm of original tail and 12.3 cm of regrown tail -- did he survive a predation attempt or did he injure the tail in some manner? His Snout-to-Vent length is now 20.4 cm and he has gained 350+ grams of weight. You can see how my hand is holding a much larger iguana than in December!

Keg is growing quickly. He has survived the perils of being a tiny hatchling predated on by almost every other animal. He is still living in the same general area, using the office roof for a refuge and feeding on the lawn in front of the lab. And he is interacting with iguanas larger and more experienced than himself.

How dry is it?

When I use fruit to bait the iguana traps, I may instead catch a capuchin monkey or a coati. This year the rains are very late, the soil is crunchy, and the leaves are wilted on the trees. 

Here is a begging capuchin who followed me on hopes of food. While they do raid traps, this is not typical in the station. 

http://youtu.be/b-6Sbi9Jg2E

And here is a male coati who also raided one of the traps:

http://youtu.be/O90LjkQYLeo

I won't bore you with the raccoon;  or that this post was delayed as I needed to release another monkey from another trap. When a troop is around, trapping stops. 

Below is a yearling iguana ignoring small trap while WWW goes for the big trap -- she was rebeaded and I took a blood sample for the molecular part of my dissertation:

http://youtu.be/3Wp0iNOWJj4

 

Find the Iguana: Pochote

Spiny-Tailed Iguana can climb a tree called the Pochote. The tree spikes are huge and sharp but no worries for an C. similis!

Can you find the iguana?

Now?

Spiny Pochote Tree

Here is a good description of the tree: http://guanacastecostarica-mitierra.blogspot.com/2012/05/costa-rican-forests-pochote-tree.html

Day Uno

Piercing an iguana's nuchal crest to add colored beads is a time-honored technique to mark individual animals. To use social network analysis tools, individual ID is a must. However, iguanas of all sorts are fascile in removing said beads -- so every trip begins with a few trapping days. 

It's quite interesting how willing Ctenosaura similes is to enter a trap for some fruit. In this very end of dry season (rains are late), fruit is likely an amazing food find. 

Also, iguanas are both disappearing and new ones join the group -- so in the 16 caught during my first full day, 4 are new to the study. Known animals are generally more useful for my questions about social structure and usually they are where I expect them to be -- same local area, same refuge and previous 6 months. Stability is important for this species.  

Breakfast for humans is 6:30; by 7:30 all traps are set and baited, and I wait for the iguanas to warm up enough to start their day. In the meantime there are the howler monkey and parrot seranades, the mosquito attacks, and the great pleasure of field work. But don't get me wrong: it's all for SCIENCE!

Vanity? No! Safety!

A large male caught today managed to give me a nice bite. Yes, iguanas have teeth! I was wearing gloves but he managed to grab my wrist. Lucky, Fitbit took the brunt, iguana processed in under 15 minutes, and within hour, out grazing again. A good day!

Iguana Toast Chronicles will not kill you!

FID, NO, OFT

Not diseases but in situ personality testsfor animals: Flight Initiation Distance, Novel Object, and Open Field Test.