News tagged with fish populations
Related topics: fish
Did the North Atlantic fisheries collapse due to fisheries-induced evolution?
The Atlantic cod has, for many centuries, sustained major fisheries on both sides of the Atlantic. However, the North American fisheries have now largely collapsed. A new paper in the open-access, peer-reviewed journal PLoS ON ...
May 27, 2009 |
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Scientists IDs genesis of animal behavior patterns
(PhysOrg.com) -- For the first time, MIT engineers and colleagues have observed the initiation of a mass gathering and subsequent migration of hundreds of millions of animals — in this case, fish.
Mar 26, 2009 |
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Changing climate can affect fish fertility
(Phys.org) -- Warmer water temperatures can greatly increase the reproductive capacity of the widely distributed pest fish species gambusia, or mosquito fish, a new study has found.
Apr 10, 2012 |
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Evolution in action: Genetic study may answer why we have plenty of fish in the sea
(PhysOrg.com) -- Three-spine sticklebacks aren't as pretty as many aquarium fish, and anglers don't fantasize about hooking one. But biologists treasure these small fish for what they are revealing about the ...
Apr 04, 2012 |
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Genetic buzzer-beater genes may save fish
Two distinct populations of rainbow trout -- one in Alaska, the other in Idaho -- share a genetic trait that could have huge implications for fisheries conservation and management, an eight-member research team reports.
Nov 29, 2011 |
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Single wild female
(PhysOrg.com) -- The release of a single female guppy into the wild can generate entire new populations, even with no males present, according to new research.
Sep 22, 2011 |
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Social behavior can make predators even pickier
Your greedy cat may turn up his nose at different food, but wild animals can be conservative when it comes to food choices too. And new research suggests that, in a group, even adventurous individuals can ...
Aug 18, 2011 |
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Double jeopardy: Tuna and billfish
A new study by top global fisheries experts presents an alarming assessment of several economically important fish populations. The analysis of 61 species of "scombrids," which include tunas, bonitos, mackerels ...
Jul 25, 2011 |
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Pollution triggers genetic resistance mechanism in a coastal fish
For 30 years, two General Electric facilities released about 1.3 million pounds of polychlorinated biphenyls (PCBs) into New York's Hudson River, devastating and contaminating fish populations. Some 50 years ...
Feb 17, 2011 |
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Whaling and fishing for the largest species has altered carbon sequestering in oceans
(PhysOrg.com) -- Decades of whaling and fishing for the largest species have altered the ability of oceans to store and sequester carbon, according to a team of marine researchers from the University of Maine, the University ...
Sep 06, 2010 |
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Gender-bending fish problem in Colorado creek mitigated by treatment plant upgrade
Male fish are taking longer to be "feminized" by chemical contaminants that act as hormone disrupters in Colorado's Boulder Creek following the upgrade of a wastewater treatment plant in Boulder in 2008, according ...
Jun 21, 2010 |
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Fish food fight: Fish don't eat trees after all, says new study
(PhysOrg.com) -- What constitutes fish food is a matter of debate. A high-profile study a few years ago suggested that fish get almost 50 percent of their carbon from trees and leaves, evidence for a very ...
Nov 24, 2009 |
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15,000 reasons to worry about invasive species
A day at the beach in Wisconsin's North Woods didn't used to go like this. Candy Dailey spent a Fourth of July holiday splashing with grandkids on the sandy shore of Lake Metonga when she felt a nasty sting on her foot.
Nov 09, 2009 |
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Study reveals 'sobering' decline of Caribbean's big fish, fisheries
Sharks, barracuda and other large predatory fishes disappear on Caribbean coral reefs as human populations rise, endangering the region's marine food web and ultimately its reefs and fisheries, according to ...
May 06, 2009 |
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Biologists use DNA to study migration of threatened whale sharks
giants of the fish world that strike terror only among tiny creatures like the plankton and krill they eat -- are imperiled by over-fishing of the species in parts of its ocean range.
Apr 07, 2009 |
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