Category: Natural History Observations Page 30 of 34

Orange sagrei

I saw the recent posts about orange/red sagrei and I thought I might contribute another observation of orange-colored brown anoles.  A few years ago while assisting another grad student with his dissertation work I spotted a few orange-colored brown anoles in a suburban yard in S. Florida.  What I thought was most interesting about the observation was that: 1) there were multiple males (2-3) with orange color, and 2) many of the palms on which lizards were perched were a similar orange color.  It got me thinking that it could be more than a coincidence.

The orange color on the trees, sidewalks, and other hard substrates in the area is from ground water with a high concentration of iron.   When sprayed on the surface with sprinklers it mixes with oxygen and leaves an orange color.  Many houses, signs, sidewalks, and even cars in S. Florida are graced with an arc or two of orange residue.  I’ve yet to revisit this lawn or surrounding houses, but I bet there are quite a few more houses with orange lizards.  For what it’s worth, I see and catch a lot of brown anoles further south in the Miami area and this is the only case of red/orange brown anoles I’ve seen yet.  It’s possible that these lizards were covered in rust, but it didn’t look like it when I got one in my hand.  It’s also interesting that all of the photos I’ve seen of orange-colored brown anoles are male, however I’ve only seen about 4 cases including this observation.  Oh, and the dewlaps on these males were normal(ish), not like the cool one recently posted by Joe Burgess.

Carolinensis – Sagrei Hanky Panky

Those rascals! I’ve heard reports of this before, but never seen a photo. I wonder if it’s always a male green anole, or whether both ways occur. In any case, it would be shocking if such liaisons led to the production of hybrid offspring, given that the two species belong to evolutionary lineages that separated many many millions of years ago.

Anolis Insolitus Struts Its Stuff

Another spectacular anole photo from Eladio Fernández, the author of the wonderful book on Hispaniolan biodiversity, Hispaniola: A Photographic Journey Through Island Biodiversity. See some of Eladio’s photos–and others–here. But you need to go to his book for the stunning shots of a solenodon in the wild. Anolis insolitus, incidentally, is a twig anole from Hispaniola. This photo was taken at the Ebano Verde Scientific Reserve.

Odd Anole Seen on Saba

This letter was just received from Dr. Jennifer Rahn (jlrahn@gmail.com):

Hi Anole friends,
We think we have some strange anole behavior on Saba (Dutch Caribbean) this week. No one has seen the indigenous Saba Anole (Anolis sabanus) with this blue belly before. Have any of you heard of it in other species? We think it may be a stray species from a nearby island, unless of course it is some alpha male or other strange but infrequent anolis behavior.
Please let us know if you can explain this to us.
Curious Sabans

Any thoughts?  It’s definitely A. sabanus (sometimes called the “panther anole” in the pet trade, and one of my favorite species).

Artificially Isolated Populations of Anoles

Photograph by Craig Berg

During a spring trip to the Dominican Republic, I spent a few nights at a high-rise hotel along the “beach” in Santo Domingo. The hotel had a concrete imprint, totally devoid of grounds. It faced a busy four-lane road and the “malecón.” A narrow band of greenery, often a single row of trees, separates the far side of the street and the high-tide mark. Anolis distichus and naturalized A. porcatus occur in small numbers along that green band. Some ornamental plantings on the fifth floor, accessible only by scaling the outside of the hotel or through the building or parking garage, supported a small number of A. distichus. I observed at least ten individuals engaged in male-male interactions, mating, and movements across a paved driveway to an even smaller planting with a few shrubs paralleling the drive. Although these individuals (or their ancestors) could have colonized this isolated pocket on their own, I believe that it is much more likely that they were introduced with the plants (a few of which were still in plastic pots). I’m guessing that this scenario is not unique and that similar isolated populations of various species exist in comparable situations throughout the islands (e.g., A. cristatellus occupies analogous, albeit not quite such isolated, plantings at the international airport in San Juan, Puerto Rico). Although some gene flow might occur when new plantings arrive, these tiny isolates, composed of no more than a few dozen individuals, are probably genetically isolated and subject to considerable inbreeding. Has anyone ever examined the lizards in such tightly constrained artificial pockets of habitat? That they exist at all, much less appear to function for extended periods, is testament to the extent to which at least some anoles adapt readily to extremely altered situations.

Anoles In Space

The Space Shuttle Atlantis lifting off from the horizon. Fellow lizarders Todd Campbell (L) and Casey Gilman (R) look on.

On July 8, we took a break from field work here in Florida to watch the launch of NASA’s last Space Shuttle mission. During the build up to the launch, I thought a lot about the end of the Shuttle program and of the scientific frontier that we are, at least temporarily, leaving. Naturally, my thoughts eventually turned to whether anoles have ever been to space.

Unique dewlap?

I recently returned from a trip to eastern Cuba and as expected, made some interesting observations and gathered some new natural history information.
While poking around one evening with a flashlight (mainly looking for Eluth’s) I saw this “orange” sagrei sleeping on some veg. I photographed it to share here since there was some discussion on and off blog about this color phase. After I got it in hand to determine species (since homolechis and jubar were also very common in the area), I was surprised at the dewlap appearance. At first I thought it had a red mite infection because of the color and texture; but after scrutiny, just accepted that it had a bright red pigment that was scattered about the entire ventral anterior. Any ideas or similar observation?

Anoles of the Florida Keys

Not an anole, but plays one on TV. Photo from Dust Tracks on the Web (http://dusttracks.com/)

Janson Jones is at it again. Having just driven about as cross-continent as you can get, from Alaska to the Florida Keys, he is now waxing eloquent on the lizards of that delightful island string. Today’s post is about introduced green iguanas, which apparently are everywhere and spreading, but yesterday he posted twice, on brown anoles (A. sagrei) and bark anoles (A. distichus) , with some keen observations on interactions between the two. Most notably, he’s noticed on multiple occasions that the larger browns chase off the the daintier barks.

postscript: Just as I hit the “post” button, Jones put up another of his own, with further observations on bark anoles and outlining what would make an excellent Ph.D. dissertation project. Plus, this intriguing observation:

“…the iPad of anoles in the Florida Keys. They’re right on the edge, living in the third space, transitory ground between the browns on the ground and the greens in the trees. They’re not iPhones, but they’re not desktops either. Right in the middle — and perhaps drawing business from both sides?”

Bark anole, A. distichus, from Dust Tracks on the Web

Glowing Anole Dewlaps

Photo by Manuel Leal from chipojolab.blogspot.com

Read all about them here.

Lizards On Islands

Turns out that there are lizards out there besides anoles evolving on islands. Check out this award winning film from Nathan Dappen. The film took first place in the first annual NESCent Evolution Film contest. 11 films were screened and voted on by attendees at the Evolution 2011 meeting in Norman, OK.

Editor’s Note: all the entries in the film festival can be seen here. The runner-up, “Why Don’t You Teach Evolution,” is also great.

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