News tagged with fish population

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 4 / 5 (2) 0 | with audio podcast

New study on tropical fish dispersal

Research published today in Proceedings of the Royal Society: B identifies success factors for tropical fish looking to establish new populations in the face of climate change.

Sep 14, 2011 4 / 5 (2) 0

Contemporary evolution study published

Studies of threatened species typically focus on factors associated with extinction risk, but a recent study published in PLoS ONE reports a case of a contemporary evolution for a recently introduced population of a protected ...

Sep 08, 2011 4 / 5 (1) 0

Warming streams could be the end for salmon

Warming streams could spell the end of spring-run Chinook salmon in California by the end of the century, according to a study by scientists at UC Davis, the Stockholm Environment Institute and the National ...

Sep 01, 2011 3.7 / 5 (3) 3

Are all alien encounters bad?

The pages of ecological history are filled with woeful tales of destruction from non-native species -- organisms that originated elsewhere.

Aug 30, 2011 4 / 5 (5) 12

Researchers study threats to white sturgeon

University of Georgia researchers are working to understand why the nation's largest freshwater fish, the white sturgeon, is struggling in northern California's Sacramento-San Joaquin Bay Delta, an environmentally endangered ...

Aug 08, 2011 not rated yet 0

Cod resurgence in Canadian waters

Cod and other groundfish populations off the east coast of Canada are showing signs of recovery more than 20 years after the fisheries collapsed in the early 1990s, according to research published today in ...

Jul 27, 2011 5 / 5 (2) 0

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 5 / 5 (3) 1 | with audio podcast

Will the eel survive its management?

The European eel is on the way to disappearing for good. The species is critically endangered, and there are strong scientific arguments for suspending all fishing. Despite this situation, Swedish eel fishery is allowed to ...

Jun 07, 2011 not rated yet 0