Bright and early this morning, Christopher Peterson kicked off the anole talks of the day on the topic “Intraspecific color and habitat use variation in Anolis conspersus.” Christopher noted that on Grand Cayman there appear to be three color morphs for A. conspersus: brown, blue, and green and asked if color morph was correlated with habitat use. … Continue reading JMIH 2016: Anolis conspersus Color variation and Habitat Use
Christopher Peterson, a masters student in the Fitzpatrick Lab at the University of Tennessee, studies color variation of Anolis conspersus on Grand Cayman. He found that lizards from eastern Grand Cayman are vermiculated and individuals from the west side are spotted. He hypothesized that color variation along the east-west axis might be due to climatic … Continue reading SICB 2016: Intraspecific Variation and Divergence in Anolis conspersus
On a recent trip to Grand Cayman I was interested in the UV reflecting dewlap of Anolis conspersus. The dewlaps of these lizards appear blue to our visual system but are maximally reflective in the ultraviolet. While anoles have 4 cone types (ultraviolet, blue, green and red sensitive), humans have only 3 and cannot see UV … Continue reading Anolis conspersus, UV Dewlap Photos And Anoles As House Geckos
Alexis Harrison and I have spent the last two days on Grand Cayman collecting tail tips from Anolis sagrei. During our work, we’ve seen quite a few A. conspersus. Anolis conspersus is nested within the Jamaican A. grahami, splitting away approximately 2.5 to 3 million years ago when it colonized Grand Cayman. Both species vary in body … Continue reading Anolis conspersus
The following was written by Amy Castle, an undergraduate and Summer Research Fellow in the Reynolds Lab at the University of North Carolina Asheville. This past May, I had the opportunity to join Dr. Geneva and his team in the Cayman Islands to assist with his research on Anolis sagrei. Along with my mentor, Dr. Graham … Continue reading Cayman Islands Anolis Research
I awoke to a placid summer day in Cambridge, Massachusetts, on 3 August of 2013. My hosts at the aptly named Friendly Inn had prepared a sumptuous breakfast, which I had again slept through before embarking on my then-daily walk to the Museum of Comparative Zoology. As I strolled on, my concerns vacillated between the … Continue reading A Taxonomic Epiphany Regarding Anolis utowanae (Not Really)
Thank you once again to everyone who participated in this year’s Anole Annals photo contest! As usual, we received tons of great photos, and we’re ready to announce the results. First up, the grand prize winner, is the above photo of Anolis conspersus, taken by Thijs van den Burg. The second place winner is below, Anolis oculatus … Continue reading Anole Annals 2018 Calendars Now Available!
As part of an ongoing study of Anolis sagrei, recently posted about here with additional links therein, I had the pleasure of joining Anthony Geneva and Shea Lambert on a trip to Cayman Brac. We later met up with Graham Reynolds and his undergraduate student Amy Castle on Little Cayman, and closed the trip out … Continue reading Anole Adventures in the Cayman Islands
In this afternoon’s round of lightning talks, anoles were the focus of three fantastic (but short!) presentations on adaptation. It’s not easy to summarize a whole project in five minutes, but that’s just what these three speakers did, and each left me wanting to know more! First, James Boyko, a Masters student working with Luke … Continue reading Evolution 2016: “Lightning” Strikes Three Times on Anoles in Afternoon Session: Character Displacement, Performance Trade-Offs and Opsin Evolution Matching Dewlap Color in Anoles
Greetings to the Anole Annals community, I love anoles and spend a lot of time wishing that I could personally observe the cornucopia of species that the world has to offer, though not being a scientist by profession and only encountering a small number of anole species in my immediate vicinity, I am limited to … Continue reading On Vocalizing Anoles
Good day everyone. I am currently working on a short manuscript about a brown anole that I observed feeding on sap. I am aware that some anoles will feed on nectar (see list below), but I would like to know if anyone has ever observed anoles feeding on sap? If you have any references pertaining … Continue reading Anoles Feeding On Liquids – Please Help
Today’s Island of the Day is actually a set of three islands that make up The Cayman Islands: Little Cayman, Grand Cayman, and Cayman Brac. Little Cayman is a quiet little diving community with less than 100 residents, made up mostly of expats and people who run the hotels that host the tourists attracted by … Continue reading The Caymans: Caribbean Herpetofauna Island(s) of the Day
We’ve had a lot of great discussion about Nicholson’s et al.’s proposal to split Anolis into eight genera. To date, most of the commenters have been against the proposal; I’d like to explain why I agree with this majority view. Anole Annals summarized the arguments for splitting Anolis several days ago. Nicholson et al. argue … Continue reading It Is NOT Time For A New Classification Of Anoles
Not many anoles have blue dewlaps, so we were delighted to see Ann Stafford’s tweet of this lovely conspersus from Grand Cayman strutting its stuff.
An interesting aspect of human activity and urban development is the ability of species to respond to new opportunities that did not previously exist. We have seen previous posts (1, 2) on Anole Annals highlighting nocturnal activity in anoles, which are recognised as a predominantly diurnal group. Here is another short observation that I and … Continue reading (K)night Anoles: Nocturnal Activity Facilitated By Artificial Lights?
In collaboration with the Conservation Biology course taught by Dr. Karen Beard here at Utah State University, where I am a Ph.D. student, I have been involved in gathering life history data on ~400 species of reptiles that have been introduced outside of their native ranges for an analysis of how life history traits (e.g., diet, fecundity, … Continue reading Fill In The Blank: Obscure Anole Life History Traits
Mainland anoles exhibit a great diversity in habitat use and morphology, a topic we have discussed previously on AA. For this reason, an analysis of patterns of evolution in habitat use across all anoles, not just mainland species, would be very welcome. Nicholson et al. step into the breach by presenting habitat categorizations for a … Continue reading Of Ecomodes And Ecomorphs: I. Are The Data Available To Categorize The Habitat Use Of All Anoles?
Widely, if inaccurately, known as the American chameleon, Anolis carolinensis is renowned for its ability to change color from a sparkling emerald to a deep brown. Surprisingly, we don’t really know what factors determine whether a particular lizard chooses to be green or brown at a particular time. Here’s what I had to say about … Continue reading New Study on Color Change In Green Anoles