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The price of vanity: Mating with showy males may reduce offspring's ability to fight off pathogens
In many animals, males advertise to potential mates with showy traits, many of which are linked to testosterone levels. However, a new study suggests that, in fish, choosing a flashier mate may cause future generations to be more susceptible to pathogens. view more (2007-01-11)
University of Pennsylvania Researchers Discover "Killer" B Cells; New Link in the Evolution of Immunity
Researchers from the University of Pennsylvania School of Veterinary Medicine have discovered a unique evolutionary link between the immune systems of fish and mammals in the form of a primitive version of B cells, white blood cells of the immune system. view more (2006-09-21)
The coward of the coral reef
The broad barred goby is a coward. A sweeping statement you may say, but even though the goby is poisonous to its predators, the cowardly fish still spends almost all its time cowering in an inaccessible coral home 20-30 cm in diameter. A new study, to be presented to the Society for Experimental biology on Wednesday 3rd April, reveals how the... view more... (2003-04-01)
Chemical come-on successfully lures love-sick lampreys to traps
A synthetic chemical version of what male sea lampreys use to attract spawning females can lure them into traps and foil the mating process of the destructive invasive species, according to Michigan State University scientists. view more (2009-01-22)
Photo-monitoring whale sharks
Up to 20 meters long and weighing as much as 20 tons, its enormous size gives the whale shark (Rhincodon typus) its name. Known as the 'gentle giant' for its non-predatory behavior, this fish, with its broad, flattened head and minute teeth, eats tiny zooplankton, sieving them through a fine mesh of gill-rakers. view more (2007-12-26)
Eat oily fish at least once a week to protect your eyesight in old age
Eating oily fish once a week may reduce age-related macular degeneration (AMD) which is the major cause of blindness and poor vision in adults in western countries and the third cause of global blindness, according to a study published today in the American Journal of Clinical Nutrition. view more (2008-08-11)
Salmonid hatcheries cause 'stunning' loss of reproduction
The rearing of steelhead trout in hatcheries causes a dramatic and unexpectedly fast drop in their ability to reproduce in the wild, a new Oregon State University study shows, and raises serious questions about the wisdom of historic hatchery practices. view more (2007-10-05)
Edible coating makes fish filets longer-lasting, healthier
Consumers may be able to eat longer-lasting, potentially healthier fish fillets if research at Oregon State University makes its way to the supermarket. view more (2009-07-17)
Discovery of a water snake that startles fish in a way that makes them flee into its jaws
Forget the old folk tales about snakes hypnotizing their prey. The tentacled snake from South East Asia has developed a more effective technique. view more (2009-06-19)
Research cautions to catch-and-release in less than 4 minutes
Recreational fishing that involves catch-and-release may seem like just good fun, and that released fish go on to live happily ever after, but a recent study at the University of Illinois shows that improper handling techniques by anglers can increase the likelihood of released fish being caught by predators. view more (2007-09-28)
Ocean invaders in deep time
Much has been made of the economic impacts of recent biological invasions, but what are the implications of invasions in deep time? Luiz Rocha leads geneticists who time travel through ocean environments. view more (2005-10-14)
Towards improved management of reservoirs in the semi-arid Northeast region of Brazil
In the Northeast region of Brazil, reservoirs called a'§udes are the main water resource during periods of drought, which are frequent and consequently often catastrophic in this part of Brazil. IRD has since 1995 been conducting a research programme on these reservoirs, in conjunction with the Federal Rural University of Pernambuco's Department... view more... (2000-05-17)
Fish vision discovery makes waves in natural selection
Emory University researchers have identified the first fish known to have switched from ultraviolet vision to violet vision, or the ability to see blue light. The discovery is also the first example of an animal deleting a molecule to change its visual spectrum. view more (2009-10-19)
Does fishing on drifting fish aggregation devices endanger the survival of tropical tuna?
Fishermen hold empirical knowledge that tuna aggregate under floating objects, such as lengths of old rope, pieces of wood, or even large marine mammals. view more (2008-05-16)
Does fishing on drifting fish aggregation devices endanger the survival of tropical tuna?
Fishermen hold empirical knowledge that tuna aggregate under floating objects, such as lengths of old rope, pieces of wood, or even large marine mammals. view more (2008-05-30)
Convergent evolution of molecules in electric fish
Having a set of extra genes gave fish on separate continents the ability to evolve electric organs, report researchers from The University of Texas at Austin. view more (2006-03-06)
Polarstern's biggest fish catch in 24 years of research in Antarctic waters
Five tons of marbled Antarctic cod (Notothenia rossii), now that was surely a big surprise to scientists and crew on board of Polarstern, alike considering that previous and subsequent hauls barely ever reaped such plentiful harvests. view more (2006-12-27)
Genetic conflict in fish led to evolution of new sex chromosomes
University of Maryland biologists have genetically mapped the sex chromosomes of several species of cichlid (pronounced "sick-lid") fish from Lake Malawi, East Africa, and identified a mechanism by which new sex chromosomes may evolve. view more (2009-10-02)
Shift in bald eagle diet linked to sea otter decline
A newly published study has found that the decline of sea otters along Alaska's Aleutian Islands has forced a change in the diet of a terrestrial predator - the bald eagle. The study demonstrates the extraordinary complexity of marine ecosystems and how far-ranging the impacts can be when there is a population shift in a keystone species like the... view more... (2008-10-03)
Study shows transfer of heavy metals from water to fish in Huelva estuary
A team of researchers from the University of Cadiz has confirmed that zinc, copper and lead are present at high levels in the water and sediments of the Huelva estuary, and have studied how some of these heavy metals are transferred to fish. view more (2009-06-16)
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