Author: Jonathan Losos Page 46 of 129

Professor of Biology and Director of the Living Earth Collaborative at Washington University in Saint Louis. I've spent my entire professional career studying anoles and have discovered that the more I learn about anoles, the more I realize I don't know.

David Wake, Organism-Based Research, and the Rise of Evo-Devo

In two recent papers, philosopher of science Jim Griesemer of U.C. Davis discusses how David Wake’s salamander-based research played a key role in the unfolding of evolutionary developmental biology and the advance of evolutionary biology.

Griesemer’s theme is that in contradiction to much of what we are taught about how science is conducted, organism-based research programs are fundamentally important by providing a means of crossing disciplinary boundaries and linking different fields. He illustrates this thesis by discussing Wake’s career-long focus on plethodontid salamanders.

One paper, published last year in Studies in History and Philosophy of Biological and Biomedical Sciences, is a general treatment of the role of organism-based research programs in evolutionary biology, whereas the other explicitly discusses the role Wake’s program played in the development of evo-devo–this paper just appeared as a chapter in a new book on the famous Dahlem conference on evo-devo in 1981 (both papers may be accessed by visiting Griesemer’s webpage, scrolling down and clicking on the appropriate paper’s link).

I think one point in particular captured the essence of the papers. Quoting Wake from a 1982 paper: “it will be increasingly important for morphologists to work as developmental biologists, biomechanical engineers, mathematical biologists, molecular biologists, and even population and community ecologists. Not for a moment do I advocate departing from morphology to these areas. Rather, I believe that instead of making morphology relevant to these areas, it is morphologists who must take the lead in making neighboring disciplines relevant to morphology.’’

The papers make fascinating reading and I highly recommend checking both out. I’ll paste the abstract and part of the conclusion of the 2013 paper below.

But before doing so, I need to address one point. Some Anole Annals readers may wonder why we are using our precious pages to report on papers by a salamander biologist. There are two answers. The first, of course, is that following the lead of Ernest Williams, many anole biologists take a similar, organism-based approach to studying diverse evolutionary questions. Indeed, Wake’s work has been an inspiration to many of us in the field, from anole evolutionists to anole developmental biologists to anole natural historians.

But if that’s not enough, consider that Wake was co-author on the description of a remarkable new genus of Central American salamander named Nyctanolis and pictured below. The biology of this endangered species (N. pernix, the only species in the genus) is little known and we can only speculate to which ecomorph it belongs. Moreover, the species description was published in the festschrift honoring Ernest Williams. Clearly, David Wake is an honorary anolologist and we suggest that there is nothing left to know about salamanders and thus he should start working on anoles.

Nyctanolis pernix. Photo by Tim Herman

Abstract of Griesemer. 2013. Integration of approaches in David Wake’s model-taxon research platform for evolutionary morphology

What gets integrated in integrative scientific practices has been a topic of much discussion. Traditional views focus on theories and explanations, with ideas of reduction and unification dominating the conversation. More recent ideas focus on disciplines, fields, or specialties; models, mechanisms, or methods; phenomena, problems. How integration works looks different on each of these views since the objects of integration are ontologically and epistemically various: statements, boundary conditions, practices, protocols, methods, variables, parameters, domains, laboratories, and questions all have their own structures, functions and logics. I focus on one particular kind of scientific practice, integration of ‘‘approaches’’ in the context of a research system operating on a special kind of ‘‘platform.’’ Rather than trace a network of interactions among people, practices, and theoretical entities to be integrated, in this essay I focus on the work of a single investigator, David Wake. I describe Wake’s practice of integrative evolutionary biology and how his integration of approaches among biological specialties worked in tandem with his development of the salamanders as a model taxon, which he used as a platform to solve, re-work and update problems that would not have been solved so well by non-integrative approaches. The larger goal of the project to which this paper contributes is a counter-narrative to the story of 20th century life sciences as the rise and march of the model organisms and decline of natural history.

Part of Concluding Section:

Anole Film Festival

Well, not quite, but thanks to Twitter, AA has learned of two new anole films. The first is about Anolis roquet from Martinique and illustrates the tremendous geographic variation of this species. But…it’s in French. Can anyone help us out and tell us what it’s all about? (Editor’s note: additional films have been added; go to the “playlist” in the upper left and choose number 6).

And let’s not overlook the lovely, multichromatic Anolis grahami. In the following Youtube clip, we see one of these wondrous beasts being colorful and running in Bermuda, where it was introduced a century ago.

Does the Fairchild Botanical Garden in Miami Have the Largest Community of Introduced Anoles in the World?

An iguana at the Fairchild Botanical Garden. Photo by Diana Robinson.

AA contributor James Stroud thinks it might. In an informative recent article in the Garden’s magazine, The Tropical Garden (go to page 28), James discusses the species, which range from the glorious red-headed agama to six–count ’em, six!–introduced anoles, along with the native green. Of course, introduces species are not a good thing, but at least they’re quality species! You can also read more about them in a recent AA post by James.

Red-headed agama at Fairchild. Photo by James Stroud.

Cuban Spider Chows on Brown Anole

spider eats anole

More spiders eating anoles (for previous aranean saurivory, see this and that). This time it’s a brown anole, A. sagrei (also, this time), falling prey to a ctenid spider in Cuba. This one’s particularly gruesome–the head’s already digested away and eaten! The authors are Elier Fonseca Hernández and Tomás M. Rodríguez-Cabrera and the paper’s just out in the most recent issue of IRCF Reptiles & Amphibians.

Brown Anole = Horse

sagrei back riding

Rather than trying to explain this, I’ll simply post the tweet that alerted me to it.

tweet

 

How Many Geckos Can Fit on One Ceiling?

ceiling geckosx

Everyone knows that geckos are anole wannabees, but here in Asia, there are, sadly, no anoles (except introduced brown anoles in Taiwan and Singapore). So, in their absence, an anolologist is forced to count geckos. Fortunately, in some places, they’re not hard to find. Just how many are there on the ceiling of this building near Khao Sok National Park in Thailand?

How to Pronounce “Anole”: the Video

The second most viewed Anole Annals post of all time is “The proper pronunciation of “anole”” which has been viewed 9,938 times (just 121 views behind the all-time leader. *You’ll have to guess what that one is about. Or click here.).

Well, now there’s a video answering the same question and, frankly, I’m not sure everyone will agree with the answer.

 

*This post was initially drafted several months ago. In the intervening time, the leading post has gone on a tear, and now is ahead by 1,610 views! Go figure.

Video of Green Anole Displaying, then Changing Color

Brown Anole Colonizes Canada

Let’s hear it for global warming! Ryan Vince Photography’s Facebook page reported that this brown anole was found in Ontario. Probably still too cold there for the festive anoles to survive, but who know’s in a warming world? Here’s what the FB page had to say: “This little hitchhiker is a Brown Anole that has somehow made its way from Florida all the way down to Ontario, Canada (2000km). I found him in a mulch pile at a local aggregate facility. It seems that he had managed to make it through two sets of wood grinders and now resides in a Vivarium here with me.”

And this isn’t the first report of the festive one getting to Canada. Recently, we had a post reporting brown anoles not only in Canada, but Denmark. Next: the World!!!

The Old Lizard by Federico Garcia Lorca

Photo from Imablog

In the parched path

I have seen the good lizard

(one drop of crocodile)

meditating.

With his green frock-coat

of an abbot of the devil,

his correct bearing

and his stiff collar,

he has the sad air

of an old professor.

Those faded eyes

of a broken artist,

how they watch the afternoon

in dismay!

 

Is this, my friend,

your twilight constitutional?

Please use your cane,

you are very old, Mr. Lizard,

and the children of the village

may startle you.

What are you seeking in the path,

my near-sighted philosopher,

if the wavering phantasm

of the parched afternoon

has broken the horizon?

 

Are you seeking the blue alms

of the moribund heaven?

A penny of a star?

Or perhaps

you’ve been reading a volume

of Lamartine, and you relish

the plateresque trills

of the birds?

 

(You watch the setting sun,

and your eyes shine,

oh, dragon of the frogs,

with a human radiance.

Ideas, gondolas without oars,

cross the shadowy

waters of your

burnt-out eyes.)

 

Have you come looking

for that lovely lady lizard,

green as the wheatfields

of May,

as the long locks

of sleeping pools,

who scorned you, and then

left you in your field?

Oh, sweet idyll, broken

among the sweet sedges!

But, live! What the devil!

I like you.

The motto “I oppose

the serpent” triumphs

in that grand double chin

of a Christian archbishop.

 

Now the sun has dissolved

in the cup of the mountains,

and the flocks

cloud the roadway.

It is the hour to depart:

leave the dry path

and your meditations.

You will have time

to look at the stars

when the worms are eating you

at their leisure.

 

Go home to your house

by the village, of the crickets!

Good night, my friend

Mr. Lizard!

 

Now the field is empty,

the mountains dim,

the roadway deserted.

Only, now and again,

a cuckoo sings in the darkness

of the poplar trees.

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