Another take on volvocine individuality

Dinah Davison & Erik Hanschen

Dinah Davison and Erik Hanschen.

A couple of weeks ago, I indulged in a little shameless self-promotion, writing about my new chapter on volvocine individuality in Biological Individuality, Integrating Scientific, Philosophical, and Historical Perspectives. Now two graduate students in the Michod lab at the University of Arizona, Erik Hanschen and Dinah Davison, have published their own take on volvocine individuality in Philosophy, Theory, and Practice in Biology (“Evolution of individuality: a case study in the volvocine green algae“). The article is open-access, and Hanschen and Davison are listed as equal contributors.

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Non-model model organisms

Jim Umen, the lead organizer of the upcoming Volvox meeting, has written a section for a new paper in BMC Biology, “Non-model model organisms.” Like all of the BMC journals, BMC Biology is open access, so you can check out the original.

The article surveys organisms that, while not among the traditional model systems, have been developed as model systems for studying particular biological questions. The paper has an unusual format, with a discrete section devoted to each species, each written by one or two of the authors. Aside from Volvox, there are sections on diatoms, the ciliates Stentor and Oxytricha, the amoeba Naeglaria, fission yeast, the filamentous fungus Ashbya, the moss Physcomitrella, the cnidarian Nematostella, tardigrades, axolotls, killifish, R bodies (a bacterial toxin delivery system), and cerebral organoids (a kind of lab-grown micro-brain).

Dr. Umen presents Volvox and its relatives as a model system for understand the evolution of traits related to the evolution of multicellularity:

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In their own words, part 2

Evolution News & Views

I previously pointed out that Casey Luskin’s “false, straw-man [version] of ID” bears a striking resemblance to intelligent design advocate Michael Behe’s actual definition:

Let me get this straight:

life is so complex, it could not have evolved” is a “false, straw-man version” of

Cells are simply too complex to have evolved.

I promised that I would get to the second part of Luskin’s “straw-man version,”

…therefore it was designed by a supernatural intelligence,

and that’s what I mean to address in this post. Maybe Luskin wasn’t claiming that ID critics mischaracterize the logic that leads ID advocates to reject evolution, but rather that they mistakenly (or deceitfully) portray ID advocates as inferring supernatural causation. If so, he’s not alone. Advocates of intelligent design frequently deny that their theory has anything to do with the supernatural, and they imply that efforts to portray it as such are deceitful or, at best, misinformed.

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A few more things called “Volvox

I like to document uses of the name “Volvox” that don’t refer to the green algal genus, for example Volvox the shipVolvox the paintDJ Volvox, another DJ VolvoxVolvox the art galleryVolvox the Turkish metal band, and another Volvox band (“one of the most extraordinary bands ever to emerge from Melbourne, or in fact anywhere else”).

Postdoc Katrin Schmidt recently brought a few more to my attention; I’m really not sure if they have anything at all to do with proper Volvox:

The Volvox

Volvox the book.

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Cells, colonies, and clones: individuality in the volvocine algae

Biological Individuality

As I mentioned previously, I have a chapter in the newly published book Biological Individuality, Integrating Scientific, Philosophical, and Historical Perspectives. The chapter was actually written nearly five years ago, but things move more slowly in the philosophy world than that of biology. Finally, though, both the print and electronic versions are now available; here is the electronic version of my chapter. The book currently has no reviews on Amazon, so if you want to give it a read, yours could be the first. If you’re interested in current and historical views on individuality, there is a lot of good stuff in here, including contributions by Scott Lidgard & Lynn Nyhart, Beckett Sterner, Andrew Reynolds, Snait Gissis, Olivier Rieppel, Michael Osborne, Hannah Landecker, Ingo Brigandt, James Elwick, Scott Gilbert, and Alan Love & Ingo Brigandt.

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bioRxiv gets a boost


Biologists have the option of posting preprints, articles that have not yet been through peer review, to bioRxiv. Modeled on the physics preprint server arXiv, bioRxiv is much newer, and its adoption by biologists (unlike arXiv’s by physicists) has been well short of universal. bioRxiv recently got a small boost, though, and I suspect it may be approaching a tipping point.

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