Joel Corush

MBE | Temperature and Pressure Shaped the Evolution of Antifreeze Proteins in Polar and Deep Sea Zoarcoid Fishes A graphic visualizing the finding by Bogan et al. that antifreeze protein (AFP) genes increased in copy number among shallow-water, polar species of Zoarcoidei fishes. Top left: Pholis gunnellus photographed by Chris Isaacs (CC-BY-NC). Top right: Cebidichthys violaceus photographed by Alex Heyman (CC0 1.0). Bottom left: Lycenchelys sp. photographed by Julien Savoie (CC BY 4.0). Bottom right: Lycodes sp. photographed by Julien Savoie (CC BY 4.0).

@snbogan.bsky.social @notothentoma.bsky.social @scotthotaling.bsky.social @paulbfrandsen.bsky.social et al. explore the evolution of type III antifreeze proteins in deep sea zoarcoid fishes.

🔗 doi.org/10.1093/molbev/msaf219

#evobio #molbio

Distinct evolutionary signatures underlie body shape diversity across deep sea habitats Abstract. The deep sea is known for extreme biological conditions such as high pressure, little-to-no solar light and cold temperatures. Despite these chal

New paper on deep-sea fish diversity out now in @sse-evolution.bsky.social, with @cmartinez.bsky.social and @sarahtfried.bsky.social

academic.oup.com/evolut/advan...

Submit your ideas to the 100% Wisconsin Fish contest | Wisconsin Sea Grant The contest is seeking creative ideas on how to use all parts of Great Lakes fish.

There's more to fish than the fillet, and we need your ideas on how to use it!

Submit your suggestions on how to use the whole fish to the 100% Wisconsin Fish contest for a chance to win a #GreatLakes prize pack.

www.seagrant.wisc.edu/news/submit-...

Non-anthropogenic cosmopolitan species ranges are scarce
Mugil cephalus, traditionally considered a (quasi)cosmopolitan diadromous fish species, is now shown to comprise some 15 different lineages deserving formal species description
www.sciencedirect.com/science/arti...

Making aquatic sciences more diverse, equitable, inclusive, and accessible: Perspectives on how individuals can take action in their professional practice Achieving Diversity, Equity, Inclusion, and Accessibility (DEIA) in the aquatic sciences has been a chronic challenge, and while recent progress has b…

Congratulations to @fishsciencedude.bsky.social and fellow co-authors for an important new article on advancing Diversity, Equity, Inclusion & Accessibility in aquatic sciences.

www.sciencedirect.com/science/arti...
@iaglr.bsky.social @waynestateresearch.bsky.social

Extensive Recombination Suppression and Genetic Degeneration of a Young ZW Sex Chromosome System in Halfbeak Fish Abstract. Sex chromosome systems have evolved independently across the tree of life, at different times in the past, and the evolutionary consequences of l

Xing et al. study sex chromosome evolution in two species of halfbeak fish, identifying a large sex-linked ZW region in Hyporhamphus sajori and a small sex-linked region on a different chromosome, with male heterogamety, in H. intermedius.

🔗 doi.org/10.1093/molbev/msaf151

#evobio #molbio

Unravelling the Effects of Ecology and Evolutionary History in the Phenotypic Convergence of Fishes Abstract. Understanding the ecological drivers and limitations of adaptive convergence is a fundamental challenge. Here, we explore how adaptive convergenc

Super excited to share our new paper investigating convergence across planktivorous fishes and assessing the impact of ancestry and light environment led by Dr Jen Hodge @fishncurious.bsky.social and including most members of the lab past and present academic.oup.com/sysbio/advan...

Estimating Genome-wide Phylogenies Using Probabilistic Topic Modeling Abstract. Methods for rapidly inferring the evolutionary history of species or populations with, genome-wide data are progressing, but computational constr

Some of you may be interested in this: academic.oup.com/sysbio/advan...

Rapid Response Bridge Funding Program In the face of recent abrupt shifts in federal funding for education research, including large-scale terminations of National Science Foundation (NSF) research grant awards, we have developed a rap...

**Rapid Response Bridge Funding Program** -- $25,000 grants earmarked for early-career researchers whose NSF-funded research on STEM and education has just been terminated.

www.spencer.org/grant_types/...

hub.jhu.edu/2025/04/28/j...

Thanks @lizneeley.bsky.social !

Pleistocene glaciation and Anthropocene fragmentation influence genetic variation in the Illinois state–listed mottled sculpin (Cottus bairdii) - Environmental Biology of Fishes Historic landscape-scale geological change often shapes contemporary distributions and phylogeographic patterns of species. Because of the long count of geologic events like glaciations, colonization ...

Pleased to see this publication led by @jcorush.bsky.social that I helped out with on the role of factors driving genetic structure of mottled sculpin in Illinois, where it is a state-threatened fish species. link.springer.com/article/10.1...

Fishes of the Chicago Region: A Field Guide Buy Fishes of the Chicago Region: A Field Guide on Amazon.com ✓ FREE SHIPPING on qualified orders

New fish book alert! On this #FishFriday, "Fishes of the Chicago Region" was just released. Detailed info on species distributions & natural history observations for >150 species in SE Wisconsin, NE Illinois, northern Indiana, and SW Michigan. Check it out...

www.amazon.com/Fishes-Chica...

Congrats!!

Some microphagous fishes have a unique pocket-like throat structure, epibranchial organ (EBO), that helps gather tiny food particles. New study of 13 species reveals diverse EBO anatomy, weak phylogenetic ties & possible link to diet
Evans et al:
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...

(A) Likelihood of the top five best-fitting trees based on f2 statistics in 500 kb windows across the genome of the 6 bear populations studied (Ancient polar bear = APB, modern polar bears = PB, Alaskan brown bears = BB, Baranof and Chichagof brown bears = ABC-BC, European brown bear = EBB, American black bear = BLK). Tree A is the best fit and reflects the expected genetic relationships among the bear populations. Trees D and E are the fourth and fifth best-fitting trees reflecting hybridization from polar bears into brown bears (Tree D) and vice versa (Tree E). (B) Cases of hybridization among the best-fitting trees in (A) (trees D and E) and cases of incomplete lineage sorting (trees L and J) which fit worse than trees D and E.

Polar bears and their lower-latitude cousins—brown bears—have a complicated past! Genomes from a >115,000 year old polar bear and 65 modern bears reveal that although polar bears and brown bears began diverging >1 mya, they hybridized up until ~200 kya. #2025MMM doi.org/10.1073/pnas.2200016119

Fig. 1: The Chromosome number and Hidden State-dependent Speciation and Extinction (ChromoHiSSE) model. Panel (a) describes the event rates allowed in the model for both cladogenetic (upper) and anagenetic (lower) events. Panels (b) and (c) demonstrate those rates on a tree simulated under ChromoHiSSE. Branches that do not reach the present represent extinct, unsampled lineages. Panel (b) shows the anagenetic and cladogenetic changes in the hidden states, indicated by blue (i) vs orange (ii). Panel (c) shows the anagenetic and cladogenetic gains and losses of chromosomes, as well as speciation with no corresponding change in chromosome numbers. More red colors in (c) correspond to more chromosomes. The vertical blue and orange bars in (c) indicate clades in the blue (i) vs orange (ii) hidden states, displaying that chromosome number changes are less frequent in the blue hidden state than in the orange. The asterisk in (c) demarcates where a cladogenetic dysploidy event could appear as an anagenetic event because of unsampled lineages.

New study by @tribblelab.bsky.social @jimarcor.bsky.social @marcialescudero.bsky.social Michael May, Rosana Zenil-Ferguson and myself just out:

Introduces a novel HiSSE chromosome model and demonstrates the importance of chrom. evol. in #sedge diversity.

nph.onlinelibrary.wiley.com/doi/10.1111/...

No.
LG statistically tests specific landscape-based resistance/barrier models on gene flow at an individual/population level. PG is a clade based understanding of the species' range. LG can inform PG, but PG does not have to incorporate landscapes into the hypotheses that are being tested.

Let´s form a community of conservation geneticists here - I started with some people I know, but there are likely to be many more... I can happily add them to this list
go.bsky.app/VMqVSAi

For scientists interested in large lakes of the world. Contact us if you'd like to be added. Space still available.

Hi, could I be added? I'm working on fish conservation, population and landscape genetics.

My research involves a number of Great Lakes fishes and I would love to be added to the list.

go.bsky.app/LXwgsEZ

Genomics, Evolution, and More by @jlsteenwyk.bsky.social bsky.app/starter-pack...

Could I be added? Thanks!

Landmark scheme shown on the left side of a representative catfish. Paired landmarks (triangles) were digitized as two separate right and left landmarks, while medial landmarks (circles) were digitized once. Colors correspond to body regions analyzed for differential rates and modularity: purple = mouth (mouth anterior, mouth left and right, mouth posterior); red = snout (tip of snout, anterior nares, posterior nares); yellow = cranial region (anterior, medial, posterior, and lateral points of the eyes, dorsal and ventral extent of the opercle opening, posterio-medial supraoccipital); green = abdomen (dorsal-, pectoral-, and pelvic-fin origins, dorsal- and pectoral-fin tips); blue = tail (dorsal-fin insertion, cloaca, anal-fin origin and insertion, dorsal and ventral procurrent caudal-fin rays, end of vertebral column). Black dots indicate adipose-fin landmarks, which are absent in many species and not included in comparative analyses.

Pleased to share our new paper studying the adaptive diversification of body shape in catfishes of the superfamily Doradoidea and exploration of the evolution of modularity and integration.

DOI: doi.org/10.1643/i202...
50-day free access link: www.ichthyologyandherpetology.org/ihbjbd/bxi20...

a seahorse is swimming in a monterey bay aquarium ALT: a seahorse is swimming in a monterey bay aquarium

Check out our new paper, led by @asantaquiteria.bsky.social ! Awesome fish diversity and #evolution, phylogenomics and evolutionary patterns of seahorses, goatfishes, dragonets, flying gurnards (Syngnatharia) across oceans.
🐟🧪🦑🌎
www.journals.uchicago.edu/doi/10.1086/...

Thank you!

Despite having recently worked on a herpetology project, could I be added?

Population genomics and mitochondrial DNA reveal cryptic diversity in North American Spring Cavefishes (Amblyopsidae, Forbesichthys) - Conservation Genetics The North American freshwater genus Forbesichthys is composed of facultative cave-dwelling fishes restricted to springs and caves in southern Illinois, southeastern Missouri, southwestern Kentucky, an...

🧪🐟 Pleased to share a new study led by my grad student Roberto Cucalón on resolving the distributions of Forbesichthys cavefishes using genomics. Big team of collaborators to thank including @jcorush.bsky.social @markdavis79.bsky.social and others not on Bluesky. link.springer.com/article/10.1...

scholar.google.com/citations?us...