Joel Corush
LightNews LightNews
jcorush.bsky.social
Joel Corush
@jcorush.bsky.social
520 followers 200 following 8 posts
Postdoc @ Illinois Natural History Survey @ University of Illinois at Urbana-Champaign
Ichthyology, macroevolution, hybridization, and conservation
University of Tennessee - EEB & Drake University Alum
https://scholar.google.com/citations?user=Xh3zefgAAAAJ
Posts Replies Media Videos
Reposted by Joel Corush
amfisheriessoc.bsky.social
The Klamath River is flowing free again.

RES and local Indian Tribes are restoring habitat, renewing cultural ties, and leading the largest dam removal in history.

🎥 Watch the film + explore the series: contentwithpurpose.co.uk/afs/tomorrow...
Restoring the Klamath River - Tomorrow's Catch
Witness the Klamath River’s transformation as dam removal restores salmon habitat, tribal lands, and cultural connections in this historic restoration.
contentwithpurpose.co.uk
November 20, 2025 at 3:00 PM
Reposted by Joel Corush
molbioevol.bsky.social
Roussel, Suh, @fjruizruano.bsky.social & @amdioncote.bsky.social characterized TE content in naturally occurring killifish hybrids, finding higher TE load and accumulation of Neptune subfamilies in hybrids.

🔗 doi.org/10.1093/molbev/msaf266

#evobio #molbio #TEsky
Accumulation of a Biparentally Inherited Neptune Transposable Element in Natural Killifish Hybrids (Fundulus diaphanus × F. heteroclitus)
Abstract. Transposable elements (TEs) are abundant selfish genetic elements that can mobilize in their host genome, causing DNA damage, mutations, and chro
doi.org
November 20, 2025 at 2:45 PM
Reposted by Joel Corush
amfisheriessoc.bsky.social
A new report reveals that fish and wildlife conservation generates substantial economic benefits. Federal, state, local, and nonprofit contributions combined contributed $115.8 billion in total economic activity and supported over 575,000 jobs nationwide. Read more: fisheries.org/2025/11/new-...
Two BLM employees tag fish in Alaska.
November 19, 2025 at 8:24 PM
Reposted by Joel Corush
molbioevol.bsky.social
@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
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).
October 21, 2025 at 9:40 AM
Reposted by Joel Corush
lizmillermacroevo.bsky.social
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...
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
academic.oup.com
October 13, 2025 at 7:09 PM
Reposted by Joel Corush
uwiscseagrant.bsky.social
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-...
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.
www.seagrant.wisc.edu
September 30, 2025 at 1:34 PM
Reposted by Joel Corush
chikichanka.bsky.social
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...
October 8, 2025 at 8:45 AM
Reposted by Joel Corush
kashiandonna.bsky.social
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
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…
www.sciencedirect.com
September 18, 2025 at 1:12 AM
Reposted by Joel Corush
molbioevol.bsky.social
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
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
doi.org
July 20, 2025 at 5:02 AM
Reposted by Joel Corush
evovert.bsky.social
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...
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
academic.oup.com
May 14, 2025 at 4:50 AM
Reposted by Joel Corush
peterbeerli.bsky.social
Some of you may be interested in this: 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
academic.oup.com
May 6, 2025 at 12:59 PM
Reposted by Joel Corush
deepseadawn.bsky.social
**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 !
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...
www.spencer.org
May 3, 2025 at 3:22 PM
Reposted by Joel Corush
mtanichthys.bsky.social
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...
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 ...
link.springer.com
April 16, 2025 at 7:41 PM
Reposted by Joel Corush
jayhawktiemann.bsky.social
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...
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
www.amazon.com
April 18, 2025 at 4:52 PM
Reposted by Joel Corush
anatrecord.bsky.social
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/...
April 3, 2025 at 4:04 PM
Reposted by Joel Corush
acstone.bsky.social
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
(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.
March 25, 2025 at 12:40 AM
Reposted by Joel Corush
andrewlhipp.bsky.social
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/...
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.
December 26, 2024 at 1:01 PM
Reposted by Joel Corush
gsegelbacher.bsky.social
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
November 2, 2024 at 8:20 AM
Reposted by Joel Corush
iaglr.bsky.social
For scientists interested in large lakes of the world. Contact us if you'd like to be added. Space still available.
November 15, 2024 at 2:16 AM
Reposted by Joel Corush
friel.bsky.social
go.bsky.app/LXwgsEZ
November 12, 2024 at 3:52 PM
Reposted by Joel Corush
stephenturner.us
Genomics, Evolution, and More by @jlsteenwyk.bsky.social bsky.app/starter-pack...
November 15, 2024 at 9:57 AM
Reposted by Joel Corush
mtanichthys.bsky.social
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...
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.
November 19, 2024 at 9:44 PM
Reposted by Joel Corush
mwestneat.bsky.social
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/...
a seahorse is swimming in a monterey bay aquarium
ALT: a seahorse is swimming in a monterey bay aquarium
media.tenor.com
November 20, 2024 at 11:52 PM
Reposted by Joel Corush
mtanichthys.bsky.social
🧪🐟 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...
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...
link.springer.com
September 11, 2024 at 3:56 PM