Geoff Hill
@geoffhill.bsky.social
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Professor at Auburn University studying animal coloration, sexual selection, and speciation.
After decades of creeping along, carotenoid honest signaling research is moving at warp speed.CYP2J19 & BDH1L localize to ER (not mito) and House Finches do not use CYP2J19. New paper lead by R. Koch, M. Toomey, and Y Zhang.
onlinelibrary.wiley.com/doi/full/10....
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Multiple Pathways to Red Carotenoid Coloration: House Finches (Haemorhous mexicanus) Do Not Use CYP2J19 to Produce Red Plumage
The carotenoid-based colours of birds are a celebrated example of biological diversity and an important system for the study of evolution. Recently, a two-step mechanism, with the enzymes cytochrome ...
https://onlinelibrary.wiley.com/doi/full/10.1111/mec.17744
7 months ago
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Auburn U cancelled classes tomorrow because the low is forecast to be 13F and we might get a dusting of snow. I love living in the south where we don't put up with cold. War Eagle
9 months ago
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Fun night out with Hill/Hood labbers present and past.
#SICB2025
10 months ago
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2 dept of biology tables at SICB — both from Alabama. Feels good to be the epicenter of SICB science. War Eagle.
#sicb2025
10 months ago
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Mito morphology plays a role in the physiological changes that enable long-distance migration. Privileged to play a small role in research led by grads Paula Mesquita & Emma Rhodes.
doi.org/10.1098/rspb...
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Mitochondrial remodelling supports migration in white-crowned sparrows (Zonotrichia leucophrys) | Proceedings of the Royal Society B: Biological Sciences
The migratory movements undertaken by birds are among the most energetically demanding behaviours observed in nature. Mitochondria are the source of aerobic energy production on which migration depend...
https://doi.org/10.1098/rspb.2024.2409
11 months ago
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reposted by
Geoff Hill
Dan Baldassarre
11 months ago
Yeah this could be a game-changer for specimen-based color research. Ben Hogan and Cassie Stoddard present a pipeline combining whole-specimen image analysis with reflectance spectrophotometry. The only catch? The setup costs about $55k... 💰
doi.org/10.1371/jour...
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A new paper with big news in the world of red carotenoid ornamentation: House Finches do not utilize CYP2J19/BDH1L to produce red feather pigments. Why is this big new?... doi:
doi.org/10.1101/2024...
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Multiple pathways to red carotenoid coloration: House finches(Haemorhous mexicanus) do not use CYP2J19 to produce red plumage
The carotenoid-based colors of birds are a celebrated example of biological diversity and an important system for the study of evolution. Recently, a two-step mechanism, with the enzymes cytochrome P4...
https://doi.org/10.1101/2024.11.26.625526
11 months ago
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