Liz Mandeville
@lizmandeville.bsky.social
fish evolutionary biologist, data nerd, outdoor enthusiast, herder of small humans. Associate Prof. Views my own.
Reposted by Liz Mandeville
Mountain mullet is part of the Mugilidae family (grey mullets), a group whose members are mostly found in marine coastal waters worldwide. The mountain mullet goes against the flow (literally!) of its family by migrating far inland and spending most of its adult life in freshwater #25DaysofFishmas
December 6, 2025 at 2:02 PM
Mountain mullet is part of the Mugilidae family (grey mullets), a group whose members are mostly found in marine coastal waters worldwide. The mountain mullet goes against the flow (literally!) of its family by migrating far inland and spending most of its adult life in freshwater #25DaysofFishmas
Reposted by Liz Mandeville
Keep an eye on your #Fishmas tree - there’s a cat(fish) on the loose! 🎄🐈
Carolina’s on our minds here on Day 5 of #25DaysofFishmas, as we meet the Carolina Madtom (Noturus furiosus), a small - but mighty - endangered catfish species only found in North Carolina
Carolina’s on our minds here on Day 5 of #25DaysofFishmas, as we meet the Carolina Madtom (Noturus furiosus), a small - but mighty - endangered catfish species only found in North Carolina
December 5, 2025 at 2:03 PM
Reposted by Liz Mandeville
Suwannee bass is one of the smaller members of the black bass genus (Micropterus) typically growing only ~8 in/21 cm long - though females grow faster + reach larger sizes than males. Mature fish often have turquoise blue coloration on the cheeks/belly that's brighter when breeding #25DaysofFishmas
December 4, 2025 at 2:04 PM
Suwannee bass is one of the smaller members of the black bass genus (Micropterus) typically growing only ~8 in/21 cm long - though females grow faster + reach larger sizes than males. Mature fish often have turquoise blue coloration on the cheeks/belly that's brighter when breeding #25DaysofFishmas
Reposted by Liz Mandeville
Like the 7 other living species of gars, Florida gar have unmistakable long slender bodies, beak-like jaws, and interlocking diamond-shaped scales. They’re one of the smaller gars, often ~2 ft (0.6 m) long - compare that to the alligator gar which can grow to nearly 10 ft (3 m)! #25DaysofFishmas
December 3, 2025 at 2:04 PM
Like the 7 other living species of gars, Florida gar have unmistakable long slender bodies, beak-like jaws, and interlocking diamond-shaped scales. They’re one of the smaller gars, often ~2 ft (0.6 m) long - compare that to the alligator gar which can grow to nearly 10 ft (3 m)! #25DaysofFishmas
Reposted by Liz Mandeville
Rudolph, the red-eared reindeer! 🦌
With ears so bright, the Redear Sunfish (Lepomis microlophus) guides us into Day 2 of #25DaysofFishmas! This member of the sunfish family found throughout the southeastern US is a warm-water loving ray of sun on a cold winter day ☀️
With ears so bright, the Redear Sunfish (Lepomis microlophus) guides us into Day 2 of #25DaysofFishmas! This member of the sunfish family found throughout the southeastern US is a warm-water loving ray of sun on a cold winter day ☀️
December 2, 2025 at 2:00 PM
Rudolph, the red-eared reindeer! 🦌
With ears so bright, the Redear Sunfish (Lepomis microlophus) guides us into Day 2 of #25DaysofFishmas! This member of the sunfish family found throughout the southeastern US is a warm-water loving ray of sun on a cold winter day ☀️
With ears so bright, the Redear Sunfish (Lepomis microlophus) guides us into Day 2 of #25DaysofFishmas! This member of the sunfish family found throughout the southeastern US is a warm-water loving ray of sun on a cold winter day ☀️
Reposted by Liz Mandeville
The Christmas darter is one of ~200 species of darters (fish in a group called Etheostomatinae) that are all native to North America + mostly found east of the Rocky Mountains. Christmas darters are Tiny Tims, typically only growing <2 in (5 cm) long #25DaysofFishmas
December 1, 2025 at 2:02 PM
The Christmas darter is one of ~200 species of darters (fish in a group called Etheostomatinae) that are all native to North America + mostly found east of the Rocky Mountains. Christmas darters are Tiny Tims, typically only growing <2 in (5 cm) long #25DaysofFishmas
Reposted by Liz Mandeville
🎶It’s beginning to look a lot like #Fishmas🎶
There’s no better fish to kick off this year’s #25DaysofFishmas than the aptly-named Christmas darter (Etheostoma hopkinsi)! We get our road trip started down in the southeastern US with this small species of fish who has big holiday spirit all year long
There’s no better fish to kick off this year’s #25DaysofFishmas than the aptly-named Christmas darter (Etheostoma hopkinsi)! We get our road trip started down in the southeastern US with this small species of fish who has big holiday spirit all year long
December 1, 2025 at 2:00 PM
🎶It’s beginning to look a lot like #Fishmas🎶
There’s no better fish to kick off this year’s #25DaysofFishmas than the aptly-named Christmas darter (Etheostoma hopkinsi)! We get our road trip started down in the southeastern US with this small species of fish who has big holiday spirit all year long
There’s no better fish to kick off this year’s #25DaysofFishmas than the aptly-named Christmas darter (Etheostoma hopkinsi)! We get our road trip started down in the southeastern US with this small species of fish who has big holiday spirit all year long
I'm recruiting a new master's student for fall 2026 in my lab at Northern Michigan University @bionmu.bsky.social ! Students with interests in evolution of freshwater fish are encouraged to apply. Please see our lab website lizmandeville.github.io and the attached advertisement for more information.
Mandeville Lab
Fish are so delightfully weird. We study the evolutionary genetics and ecology of freshwater fishes, plus a few more things, at Northern Michigan University
lizmandeville.github.io
November 24, 2025 at 2:35 PM
I'm recruiting a new master's student for fall 2026 in my lab at Northern Michigan University @bionmu.bsky.social ! Students with interests in evolution of freshwater fish are encouraged to apply. Please see our lab website lizmandeville.github.io and the attached advertisement for more information.
Reposted by Liz Mandeville
Amanda Sabatino, @jpjahner.bsky.social and I have a new paper on @biorxiv-evobio.bsky.social. Amanda, in her undergraduate thesis work, found variation in Colias colour phenotypes is associated with different metrics of urbanization in Toronto. www.biorxiv.org/content/10.1...
Anthropogenic factors explain wing colour variation in Colias (Lepidoptera: Pieridae) butterflies across the Toronto urbanization gradient
Hybridization, or interbreeding between two previously diverged populations, is increasing due to human influences on the environment. Rates of hybridization might be increasing particularly quickly a...
www.biorxiv.org
November 19, 2025 at 7:10 PM
Amanda Sabatino, @jpjahner.bsky.social and I have a new paper on @biorxiv-evobio.bsky.social. Amanda, in her undergraduate thesis work, found variation in Colias colour phenotypes is associated with different metrics of urbanization in Toronto. www.biorxiv.org/content/10.1...
Reposted by Liz Mandeville
Excited to recruit a new PhD student for Fall 2026 in my lab at Cornell! Looking for someone interested in evolutionary genomics + fisheries/conservation applications. Quick timeline this year—reach out soon. More details: www.therkildsenlab.org/join-us.html
Join Us
The lab of Nina Overgaard Therkildsen in the Department of Natural Resources and the Environment at Cornell University invites applications for a PhD position starting in Fall 2026. Our group works...
www.therkildsenlab.org
November 14, 2025 at 2:17 AM
Excited to recruit a new PhD student for Fall 2026 in my lab at Cornell! Looking for someone interested in evolutionary genomics + fisheries/conservation applications. Quick timeline this year—reach out soon. More details: www.therkildsenlab.org/join-us.html
Marquette being gorgeous. Good job @lakesuperior.bsky.social too
October 24, 2025 at 2:43 PM
Marquette being gorgeous. Good job @lakesuperior.bsky.social too
Capturing plankton for teaching on a crisp fall morning. Chilly, but beautiful!
October 20, 2025 at 1:24 PM
Capturing plankton for teaching on a crisp fall morning. Chilly, but beautiful!
Some days, this is my job. Scouting for a field lab.
October 3, 2025 at 4:43 PM
Some days, this is my job. Scouting for a field lab.
My car cloned itself while I was at work! But I’m confused as an evolutionary biologist bc I thought only hybrids did that, and it’s electric! Is my car a plant? Was it parthenogenesis, gynogenesis, or kleptogenesis? Mysteries abound!
October 1, 2025 at 11:50 AM
My car cloned itself while I was at work! But I’m confused as an evolutionary biologist bc I thought only hybrids did that, and it’s electric! Is my car a plant? Was it parthenogenesis, gynogenesis, or kleptogenesis? Mysteries abound!
Reposted by Liz Mandeville
Peer review ✍️, when done properly, remains an excellent mean to improve manuscripts ✔️. Special thanks to two anonymous reviewers that helped us put together this new version!
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
September 11, 2025 at 12:48 PM
Peer review ✍️, when done properly, remains an excellent mean to improve manuscripts ✔️. Special thanks to two anonymous reviewers that helped us put together this new version!
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
Reposted by Liz Mandeville
Still possible to apply to this #post-doc position at CESAB #Montpellier.
Application closing date: September 15th 2025 (12:00 PM CET)
How taking intraspecific diversity and evolutionary processes into account in translocation-based programs.
Please share widely #PopGen #NbS #Biodiversity
Application closing date: September 15th 2025 (12:00 PM CET)
How taking intraspecific diversity and evolutionary processes into account in translocation-based programs.
Please share widely #PopGen #NbS #Biodiversity
3-year #postdoc position at Centre de synthèse et d'analyse de la biodiversité (CESAB) in Montpellier to work on how taking intraspecific diversity and evolutionary processes into account in translocation-based programs. Please share widely #PopGen #NbS
[📢 Postdoc offer in Montpellier] Work on intraspecific diversity & translocation in Nature-based Solutions 🌿
Join the EVOLUTION Knowledge-Hub at the #FRB-CESAB
🔗 More informations: bit.ly/43uRz6Z
@cnrs.fr @inrae-france.bsky.social @umontpellier.bsky.social
Join the EVOLUTION Knowledge-Hub at the #FRB-CESAB
🔗 More informations: bit.ly/43uRz6Z
@cnrs.fr @inrae-france.bsky.social @umontpellier.bsky.social
September 2, 2025 at 2:28 PM
Still possible to apply to this #post-doc position at CESAB #Montpellier.
Application closing date: September 15th 2025 (12:00 PM CET)
How taking intraspecific diversity and evolutionary processes into account in translocation-based programs.
Please share widely #PopGen #NbS #Biodiversity
Application closing date: September 15th 2025 (12:00 PM CET)
How taking intraspecific diversity and evolutionary processes into account in translocation-based programs.
Please share widely #PopGen #NbS #Biodiversity
Very cool! The more we learn about the biology of sex determination, the more interesting and complicated it gets. (I rescind my previous snarky comments that birds are "simple and boring" in this department.)
Newest lab research:
Up to 6% of the wild birds - in all 5 species we looked at - showed a different sex morphology than what their blood tests (read: chromosomes) told us. Sex is not simple!
doi.org/10.1098/rsbl...
Up to 6% of the wild birds - in all 5 species we looked at - showed a different sex morphology than what their blood tests (read: chromosomes) told us. Sex is not simple!
doi.org/10.1098/rsbl...
Prevalence and implications of sex reversal in free-living birds | Biology Letters
The ability to unequivocally identify the sex and reproductive status of individuals
is crucial across many fields of study. Recent evidence indicates that avian sex determination
is more flexible tha...
doi.org
August 13, 2025 at 6:01 PM
Very cool! The more we learn about the biology of sex determination, the more interesting and complicated it gets. (I rescind my previous snarky comments that birds are "simple and boring" in this department.)
Reposted by Liz Mandeville
Shirley Chen's paper from my lab on the dilution and amplification hypotheses regarding the biodiversity-disease relationship.
onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com/doi/10.1002/...
Reappraisal of the Dilution and Amplification Effect Framework: A Case Study in Lyme Disease
The biodiversity–disease relationship posits two hypotheses: the dilution effect (where there's a negative relationship between biodiversity and disease risk) and the amplification effect (where ther...
onlinelibrary.wiley.com
August 13, 2025 at 4:56 PM
Shirley Chen's paper from my lab on the dilution and amplification hypotheses regarding the biodiversity-disease relationship.
onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com/doi/10.1002/...
This is a books recommendation thread. The air is smoky and things are dark right now, but I just finished a lovely book (“To Be Taught, If Fortunate”, by Becky Chambers). I’ve been really enjoying beautiful speculative fiction. What have you read recently that you love?
August 2, 2025 at 1:54 PM
This is a books recommendation thread. The air is smoky and things are dark right now, but I just finished a lovely book (“To Be Taught, If Fortunate”, by Becky Chambers). I’ve been really enjoying beautiful speculative fiction. What have you read recently that you love?
Today the air quality index where I live is 168 due to drifting smoke from wildfires. I canceled my trail run. My kid is mad at me for not letting her attend soccer camp, but really, we should all be mad at our leaders. We need climate science and clean energy policies, not cuts.
July 30, 2025 at 3:13 PM
Today the air quality index where I live is 168 due to drifting smoke from wildfires. I canceled my trail run. My kid is mad at me for not letting her attend soccer camp, but really, we should all be mad at our leaders. We need climate science and clean energy policies, not cuts.
I'm thrilled to share more cool fish genetics, led by former MSc student Amanda Meuser, and with former student Amy Pitura and collaborator @erynmcfarlane.bsky.social. This one is about minnow hybrids!
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
Extensive multi-species hybridization between Leuciscidae minnow species
Anthropogenic disturbances can disrupt ecosystems and alter species population dynamics. Interspecific hybridization is common between genetically related organisms, especially once reproductive barri...
www.biorxiv.org
July 23, 2025 at 5:52 PM
I'm thrilled to share more cool fish genetics, led by former MSc student Amanda Meuser, and with former student Amy Pitura and collaborator @erynmcfarlane.bsky.social. This one is about minnow hybrids!
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
Reposted by Liz Mandeville
Applications now open for the SSE GREG Rosemary Grant Advanced Awards! These grants provide up to $3500 to expand your dissertation work. Submit your proposal by September 15!
www.evolutionsociety.org/content/soci...
www.evolutionsociety.org/content/soci...
July 15, 2025 at 9:16 PM
Applications now open for the SSE GREG Rosemary Grant Advanced Awards! These grants provide up to $3500 to expand your dissertation work. Submit your proposal by September 15!
www.evolutionsociety.org/content/soci...
www.evolutionsociety.org/content/soci...
It's easy! Save their numbers in your phone and make calling a habit. Call the ones you agree with and the ones you don't - positive feedback when they do the right thing is just as important as critical feedback when they're doing something you don't like.
“If you’ve never called your Member of Congress, today is the day to do it.”
@ezralevin.bsky.social joined @democracynow.org to explain why Trump’s Tax Scam could be the worst bill in modern American history.
@ezralevin.bsky.social joined @democracynow.org to explain why Trump’s Tax Scam could be the worst bill in modern American history.
July 2, 2025 at 6:55 PM
It's easy! Save their numbers in your phone and make calling a habit. Call the ones you agree with and the ones you don't - positive feedback when they do the right thing is just as important as critical feedback when they're doing something you don't like.
Michiganders, I just called my Republican congressional representative to express my opposition to the budget bill, and got right through to a staffer. That's not right, his phone should be ringing constantly. If you're in the UP, represented by Bergman, and oppose the budget bill, give him a call!
July 2, 2025 at 6:07 PM
Michiganders, I just called my Republican congressional representative to express my opposition to the budget bill, and got right through to a staffer. That's not right, his phone should be ringing constantly. If you're in the UP, represented by Bergman, and oppose the budget bill, give him a call!