fish

Male fish deceive rivals about their top mate choice

harminka — Thu, 31 Jul 2008 13:37:01 -0500

When competitors are around, male Atlantic mollies try to hide their top mate choice, reveals a new study published online on July 31st in Current Biology, a Cell Press journal.

Fish with temperature-dependent sex determination face global warming

harminka — Wed, 30 Jul 2008 08:00:58 -0500

In vertebrates with separate sexes, sex determination can be genotypic (GSD) or temperature-dependent (TSD). TSD is very common in reptiles, where the ambient temperature during sensitive periods of early development irreversibly determines whether an individual will be male or female.

Sorry, Charlie, You and Nemo Aren't the Only talking fish

harminka — Mon, 21 Jul 2008 08:02:07 -0500

Talking fish are no strangers to Americans. From the comedic portrayal of "Mr. Limpet" by Don Knotts, to the children's Disney favorite, "Nemo," fish can talk, laugh and tell jokes--at least on television and the silver screen.

Lionfish decimating tropical fish populations, threaten coral reefs

harminka — Sat, 19 Jul 2008 02:47:52 -0500

The invasion of predatory lionfish in the Caribbean region poses yet another major threat there to coral reef ecosystems – a new study has found that within a short period after the entry of lionfish into an area, the survival of other reef fishes is slashed by about 80 percent.

Vocal communication evolved with ancient species

harminka — Fri, 18 Jul 2008 11:42:12 -0500

It's a long way from the dull hums of the amorous midshipman fish to the strains of a Puccini aria – or, alas, even to the simplest Celine Dion melody.

Weighty implications for fish and wildlife health

harminka — Sat, 12 Jul 2008 03:34:34 -0500

Millions of pounds of lead used in hunting, fishing and shooting sports wind up in the environment each year and can threaten or kill wildlife, according to a new scientific report.

Fish contains potentially dangerous fatty acid combination

harminka — Tue, 08 Jul 2008 13:26:18 -0500

Farm-raised tilapia, one of the most highly consumed fish in America, has very low levels of beneficial omega-3 fatty acids and, perhaps worse, very high levels of omega-6 fatty acids, according to new research from Wake Forest University School of Medicine.

Closing gap between fish and land animals

harminka — Thu, 26 Jun 2008 09:05:53 -0500

New exquisitely preserved fossils from Latvia cast light on a key event in our own evolutionary history, when our ancestors left the water and ventured onto land. Swedish researchers Per Ahlberg and Henning Blom from Uppsala University have reconstructed parts of the animal and explain the transformation in the new issue of Nature.

Project succeeding to relocate Caspian terns

harminka — Tue, 17 Jun 2008 07:19:27 -0500

A major initiative to create alternative nesting sites for the largest colony of Caspian terns in the world – and to help protect juvenile salmon and steelhead in the Columbia River – is finding early success.

Oily fish can protect against rheumatoid arthritis

harminka — Sat, 14 Jun 2008 02:49:07 -0500

New data presented today at EULAR 2008, the Annual Congress of the European League Against Rheumatism in Paris, France, show that intake of oily fish is associated with a reduced risk of developing rheumatoid arthritis (RA), whereas psychosocial work stress and smoking can increase the risk of developing the condition.

Does fishing endanger survival of tropical tuna?

harminka — Fri, 30 May 2008 05:08:33 -0500

Fishermen hold empirical knowledge that tuna aggregate under floating objects, such as lengths of old rope, pieces of wood, or even large marine mammals. There is still no full explanation for this aggregation behaviour, but the past 20 years have seen purse-seine fishery operators take advantage of the associated concentrations of fish.

Healthy Parents Provide Clues to Survival of Young Haddock

harminka — Wed, 28 May 2008 02:35:12 -0500

In 2003, haddock on Georges Bank experienced the largest baby boom ever documented for the stock, with an estimated 800 million new young fish entering the population.