Sign in

George Jarvis

@gc-jarvis.bsky.social
252 followers 816 following 1 posts

Postdoc at the University of Chicago interested in body size, energy, and life history

PostsRepliesMedia
Reposted by George Jarvis
Monique Van Dorssen @monique-vdor.bsky.social · 18/06/2026
Excited to be attending #Evol2026! I'll be talking about the genetic basis of local adaptation in the face of high gene flow: it may or may not have something to do with structural variants! Come see my talk next Wednesday at 2.30 pm in the "Adaptation: Inference of Selection" session (room 24)
1133
Reposted by George Jarvis
Dustin Marshall @djmmeeg.bsky.social · 22/05/2026
Out today in @cp-trendsecolevo.bsky.social our paper “Second Thoughts about First Principles in Biology.” www.cell.com/trends/ecolo... . We are in favour of first principles approaches in biology but we think that we need to do better in how we use them.
cell.com
Second thoughts about first principles in biology
First-principles approaches, based on physics or chemistry, are key pillars of biological theory. Despite their value, there are recurrent problems with many first-principles approaches in biology: th...
24418
Reposted by George Jarvis
Dustin Marshall @djmmeeg.bsky.social · 06/05/2026
Metabolic scaling is thought to scale very steeply with size in unicells but what if that steepness is simply an artefact? Out today in Ecology Letters, we show that metabolic scaling is not superlinear in unicells but instead scales at ~0.86 onlinelibrary.wiley.com/doi/epdf/10....
onlinelibrary.wiley.com
Drivers and Consequences of Size Declines in Unicells
Reader environment loaded
1198
Reposted by George Jarvis
Dustin Marshall @djmmeeg.bsky.social · 12/03/2026
Out today in @science.org our paper on how evolutionary adaptation to warming will reduce fisheries yields. Please let me know if you need me to send you a copy. Summary of the paper coming soon. www.science.org/doi/10.1126/...
science.org
Evolutionary adaptation to global change reduces sustainable fisheries yields
Global warming is altering the fisheries that underpin food security, but projections of these impacts generally exclude evolutionary processes. We describe a model that forecasts how fish will adapt ...
06030
Reposted by George Jarvis
Dustin Marshall @djmmeeg.bsky.social · 13/03/2026
Fish will have to adapt to a warming world, what will that adaptation do to fisheries yields? We answer that question today in Science. I’ll summarise our findings very briefly in this thread www.science.org/doi/epdf/10....
science.org
Evolutionary adaptation to global change reduces sustainable fisheries yields
Global warming is altering the fisheries that underpin food security, but projections of these impacts generally exclude evolutionary processes. We describe a model that forecasts how fish will adapt ...
35633
Reposted by George Jarvis
School of Biological Sciences, Monash @MonashBiol @monashbiol.bsky.social · 22/12/2025
Is hermaphrodism less common in animals because it is energetically more costly? George Jarvis and @djmmeeg.bsky.social have analysed 536 species of marine invertebrates and found that hermaphrodites require approximately 27% less energy than gonochores on average. doi.org/10.1098/rspb...
152
Reposted by George Jarvis
School of Biological Sciences, Monash @MonashBiol @monashbiol.bsky.social · 22/12/2025
Was Darwin wrong? Hermaphrodites found to be more energy efficient than animals with two sexes monash.edu/science/news...
monash.edu
Was Darwin wrong? Hermaphrodites found to be more energy efficient than animals with two sexes
Hermaphrodites may have an unexpected evolutionary advantage over animals with separate sexes, they use significantly less energy to live.
022
George Jarvis @gc-jarvis.bsky.social · 12/12/2025
Excited to share our study testing competing theories on the energy dynamics of hermaphroditism! Grateful to @djmmeeg.bsky.social for guidance, to Thomas Brey for metabolic rate data, and to Deborah Charlesworth for feedback. Thanks also to the editors and reviewers at Proc B. @royalsociety.org
0125
Reposted by George Jarvis
Dustin Marshall @djmmeeg.bsky.social · 11/12/2025
Darwin speculated that it was energetically costly to be an hermaphrodite. He thought that might explain why they were relatively rare in animals. Our paper out today tested this conjecture for the first time. royalsocietypublishing.org/rspb/article...
royalsocietypublishing.org
Hermaphrodites have lower metabolic rates than gonochores
Abstract. Hermaphroditism, where an individual can reproduce as both male and female, offers some clear reproductive advantages. Simultaneous hermaphroditi
23217
Reposted by George Jarvis
The American Genetic Association @theaga.bsky.social · 28/04/2025
Another cool genome assembly: The first phased, annotated, chromosome-level assembly for a reef-building tubeworm, Galeolaria caespitosa! The species has 11 autosomal chromosomes and no sex chromosomes.
142
Reposted by George Jarvis
Will White @jwilsonwhite.bsky.social · 18/01/2025
Hiring a postdoc! For #NSF project on oyster metapopulations and restoration, led by Max Castorani at UVa. Two year position based at UVa, OSU, or remote. Ideal for PhDs in quant ecology or oceanography. Apply by March 1. Message me with questions! jobs.virginia.edu/us/en/job/R0...
jobs.virginia.edu
Research Associate in Environmental Sciences in Charlottesville, Virginia, United States of America | Research at University of Virginia
Apply for Research Associate in Environmental Sciences job with University of Virginia in Charlottesville, Virginia, United States of America. Research at University of Virginia
01211
Reposted by George Jarvis
Dustin Marshall @djmmeeg.bsky.social · 09/01/2025
We are extending the deadline past the 10th so everyone please repost. ECRs, there are still some places left so please apply!
086