Extreme variation in male Volvox carteri from Taiwan

Nozaki et al. 2018 Fig. 1 A-D

Figure 1 a-d from Nozaki et al. 2018. Light microscopy of asexual spheroids in Taiwanese strains of Volvox carteri f. nagariensis. a Surface view of a spheroid showing undivided gonidia (G). 2016‐tw‐nuk‐6‐1. b Optical section of a spheroid in (a) with gonidia (G). c Surface view of spheroid. Note no cytoplasmic bridges between somatic cells. 2016‐tw‐nuk‐6‐1. d Surface view of spheroid showing individual sheaths of the gelatinous matrix. Stained with methylene blue. 2016‐tw‐nuk‐8‐1. e Optical section of gonidium. 2016‐tw‐nuk‐6‐1. f, g Pre‐inversion plakea or embryo (E) showing gonidia (G) of the next generation outside. 2016‐tw‐nuk‐8‐1.

Most of what we know about the developmental genetics of Volvox comes from the Eve strain of Volvox carteri forma nagariensis, which was collected by Richard Starr from Kobe, Japan in 1967. Eve is the strain that David Kirk and colleagues used for most of their experiments and from which most of the important developmental mutants are derived.

It’s natural, then, to think that Eve is representative of V. carteri f. nagariensis and that what’s true for Eve is generally true for this forma. Recent work from Hisayoshi Nozaki and colleagues shows that, at least in one respect, this is a bad approximation.

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This should be interesting

I’m pretty sure I got a scammer to send a cashier’s check to the Federal Trade Commission. I despise Craigslist scammers (all scammers, really) ever since I moved to Vancouver. My dad had driven up with me, all the way from Tucson with Heidi in his lap, and we were staying in a hotel downtown while I tried to find a place to live.

Dad and Heidi

1600 miles in a Miata with a 35-pound dog in his lap. My dad is a hero.

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Volvox barberi “flocks”

Balasubramanian Fig 3 A&B

Figure 3 A&B from Balasubramanian 2018. (a) V. barberi flock where 56 colonies gathered over several minutes and rotated coherently and rapidly in the culture well. (b) Schematic of flock in panel a.

At the Fourth International Volvox Meeting in St. Louis, a student from Harriton High School in Rosemont, Pennsylvania presented a talk and a poster on “flocking” behavior in Volvox barberi. Now a preprint describing his work is available on bioRxiv.

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How bad is £50 for a 1000-word article?

Research Features

Just a quick followup on yesterday’s post (“Those beautiful Research Features articles? The authors get £50.“). If you could write two such articles a day, five days a week, you would earn around £26,000 ($35,000) per year:

£50/article x 2 articles/day x 5 days/week x 52 weeks/year = £26,000/year.

At the end of a year, you’d have written around half a million words, a bit more than The Lord of the Rings.