How do blind cavefish survive their low-oxygen environment?

How do blind cavefish survive their low-oxygen environment?

Source: University of Cincinnati

3/13/2022

How do blind cavefish survive their low-oxygen environment?

Credit: University of Cincinnati

Now researchers at the University of Cincinnati say these incredible fish have an equally remarkable physiology that helps them cope with a low-oxygen environment that would kill other species.

Biologists in UC’s College of Arts and Sciences found that Mexican cavefish produce more hemoglobin through red blood cells that are much larger compared to those of surface-dwelling fish. Hemoglobin helps the body transport oxygen and carbon dioxide between a fish’s cells and organs and its gills.

The study was published in the Nature journal Scientific Reports. It demonstrates how much more there is to learn about animals that have intrigued biologists for 200 years.

“I’ve been fascinated by these fish for a long time,” UC associate professor Joshua Gross said.

Cavefish evolved in caverns around the world. The species UC biologists examined, Astyanax mexicanus, diverged as recently as 20,000 years ago from surface fish still found in nearby streams in Sierra de El Abra, Mexico.

Continue...

News Id		Source	Stamp	country
3576	Fish with 'human face' makes splash online	Mo Hong'e	2016-05-09	CN
3577	Herpes virus to be used in fight against carp in Murray River, Christopher Pyne says	abc	2016-04-30	AU
3578	Catch of the day! The moment a fisherman reeled in a huge sawfish as stunned beach-goers looked on	dailymail	2016-05-01	UK
3579	Fingal fishermen caught 20kg tuna using drone to spot the fish	goldcoastbulletin	2016-05-03	AU
3580	How goldfish became a lucrative Great Lakes commercial catch	mlive	2019-01-19	US
3581	Drinking like a fish! Incredible moment fish-out-of-water gulps down beer on side of anglers' boat	dailymail	2016-04-26	UK
3582	Свой-чужой: как дружба между рыбами спасает от хищников	habr	2021-07-24	RU
3583	Canada announces big cuts to commercial fishing to protect wild salmon that Washington’s orcas eat	The Seattle Times	2021-06-30	CA
3584	Mumbai’s Koli fishermen face a perfect storm: climate change, cyclones, and illegal fishing	scroll	2021-07-04	IN
3585	Asian Kiwi says he was racially profiled as an 'over-fisher' during Whangamatā trip	stuff	2021-07-05	NZ
3586	2 Men Caught Using Illegal Electrofishing Device Along The Red River	newson6	2021-07-06	US
3587	Giant tarpon fish almost eats woman's hand during feeding time	telegraph	2021-07-20	UK
3588	Fish near angling hotspots are more clever, avoid capture	upi	2016-04-26	US
3589	DNR considers regulating underwater cameras, removing minimum size for sturgeon spearing	FOX 11 News	2021-06-28	US
3590	Fish and Game reports electroshocking, removing 10,654 rainbow trout from South Fork	idahostatejournal	2021-07-03	US
3591	Turkey now home to worst invasive fish species	dailysabah	2021-07-02	TU
3592	This underwater drone lures and photographs your pet fish	cnet	2016-04-18	US
3593	‘River Monsters’ host Jeremy Wade rarely eats fish	pagesix	2016-04-12	US
3594	Wild water snake climbs onto Texas man's lap for a fish snack	upi	2016-04-05	US
3595	‘Barbarian style’ ice fishing a fun alternative	lansingstatejournal	2016-03-26	CA
3596	Researchers Find Fish That Walks the Way Land Vertebrates Do	nytimes	2016-03-24	US
3597	Fish with jubilant expression on its face caught off Wareham	whdh	2021-06-25	US
3598	Probe launched over claims of ‘sonic torture’ at Scots fish farms	thenational	2021-06-27	UK
3599	Never give up on a fish! Idaho angler uses his noodle to free stuck catch	idahostatesman	2021-06-28	US
3600	Dubai bans use of fishing nets, announces plan to protect marine life	khaleejtimes	2021-06-21	SA

143 of [218 - pages.]