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Tag: "fish" at biology news

Releasing fish for the future

...investigating ways to boost the survival rates of fish caught and then released by anglers. Some guidelines designed to improve fish survival were recently developed for released line-caught snapper, silver trevally, mulloway, sand w...

Researchers find 24 species believed new to science in Suriname rainforest

...h florescent purple markings and other amphibians, fish and insects. Presented in a report made public to...reshwater sources clean enough to support abundant fish and amphibian life. Among the 24 species believed new to science are an Atelopus frog with brilli...

Fat fish put obesity on the hook

Everyone knows that eating lean fish helps slim waistlines, but researchers from the Ce...e University in Portland, OR, have found a new way fish can help eliminate obesity. In a study to be published in the July 2007 print issue of The FASEB Jou...

Electric fish conduct electric duets in aquatic courtship

... that in the battle of the sexes, African electric fish couples not only use specific electrical signals t...rst study to successfully sort signals in electric fish based on sex. The research, which is the cover story in the July 1 issue of the Journal of Experi...

Antarctic icebergs -- Hotspots of ocean life

...birds above and a web of phytoplankton, krill, and fish below. The icebergs hold trapped terrestrial material, which they release far out at sea as they melt. The researchers discovered that this process produces a “halo effect” with significantly increased phytoplankton, krill and seabirds out to a rad...

New research shows sharks use their noses and bodies to locate smells

...ral line. The lateral line is an organ used by all fish to detect, with exquisite sensitivity, movement an...Atema, since most odor plumes disperse in patches, fish locate odor sources through a process referred to as "eddy chemotaxis," or the tracking of odor and ...

Hearts of male and female rainbow trout are different

... Nor were comparisons made between male and female fish (the largest group of vertebrates) made. There is ... examined if two regulatory molecules found in the fish heart -- citrate (an acid which inhibits the glycolytic metabolic pathway) and pyruvate dehydrogenas...

Parasites' impact goes beyond host to affect ecosystem

...h first lives in the snails?gonads then moves to a fish as its second host. Shorebirds ?more prevalent on ...hat other snails, isopods, and possibly near-shore fish feed on ephemeral algae. "It’s suggestive that these non-lethal impacts of parasites have influentia...

Dinosaur hearing, listening to muscle noise, quieter cubicles

...ures that may have enhanced the hearing of various fish species during their evolution (2aAB1), and the notable features of 36 cat species' middle ears, which may provide clues on the evolutionary pressures on them (2aAB4). LISTENING TO MUSCLE NOISE Muscles make noise. For example, you can hear th...

Rare soft-shell turtle, nesting ground found in Cambodia

...g populations of such threatened species as terns, fish eagles, green peafowl, otters and silvered leaf-monkeys. More than 180 fish species were recorded, including a new record for Cambodia? Bezuijen described the area where the ...

Cornell lab confirms deadly fish virus spreading to new species

A lethal fish virus in the Great Lakes and neighboring waterways...ies affected and so many mortalities." Three new fish kills have occurred in 2007 in New York waters since the virus was identified in the Great Lakes Bas...

Fast and slow -- How the spinal cord controls the speed of movement

...ord with laser beams, the researchers rendered the fish incapable of slow movements. By removing nerves further up the backbone, the fish had difficulty moving fast. "No one had any idea that organization like this existed in a spinal ...

Fish extinctions alter critical nutrients in water, study shows

...s teased out how the disappearance of a freshwater fish can affect the availability of certain nutrients t...t the base of the food chain, for example, rely on fish to cycle back into the water such nutrients as nitrogen and phosphorus, which are otherwise locked u...

It's never too late to get it back! Aging interrupted

...process. However, it is known that vegetarians and fish eaters live longer than red meat eaters, and that, generally, the more fruit and vegetables in the diet, the better your health and longer your lifespan....

Tracking sperm whales and jumbo squid

...al movement is that the squid were following small fish and other prey that migrate toward the surface at night and then return to deeper waters during the day. Unlike squid, however, the sperm whales did not alter their diving pattern at night. Instead, they continued to spend about three-fourths of t...

Woman's Day and For Womens of Science

The health risks posed by mercury contaminated fish is sufficient to warrant issuing a worldwide gener...bearing age-to be careful about how much and which fish they eat. That is one of the key findings comprising "The Madison Declaration on Mercury Pollution"...

Mercury contamination of fish warrants worldwide public warning

The health risks posed by mercury contaminated fish is sufficient to warrant issuing a worldwide gener...bearing age-to be careful about how much and which fish they eat. That is one of the key findings comprising "The Madison Declaration on Mercury Pollution"...

Farmed salmon could become an invasive species in forest streams

...n have plummeted and, there is concern that farmed fish may become the next invasive species. "Farmed fish escaping from marine net pens might become an invasive species in British Columbia, Washington or Al...

Hotspots of mercury contamination identified in eastern North America

...n research team surveying mercury contamination in fish and birds in the northeastern United States and southeastern Canada has identified five "hotspots" where concentrations of the element exceed those established for human or wildlife health. The team focused on levels of the potent neurotoxin in yello...

How fish species suffer as a result of warmer waters

...ly in shallow coastal oceans. This applies also to fish populations. Previous studies demonstrating a link between global warming and declining fish stocks were based entirely on statistical data. However, in order to estimate future changes, it is ...

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