Tag: "crabs" at biology news
New hypoxic event found off Oregon coast
...d off the central Oregon Coast. It's killing fish, crabs
and other marine life and leading researchers to b...he deep sea. Last week, hundreds of dead Dungeness crabs
and molts were found in tidepools south of Yachats. Area residents have also reported dead fish on s...
Gulf of Maine marine ecosystem may have entered new phase
...ort published in the journal Ecosystems. With crabs
and lobsters at the top of the proverbial heap, th...the re-emergence of kelp beds and the dominance of crabs
and lobsters. The report cites an experiment in which adult urchins were stocked in an area to see i...
Ecosystem bounces back from hurricanes
...he paper asserts. Reductions in the number of blue crabs
can be attributed, says Dr. David Eggleston, profe.... "We feel the historically low abundances of blue crabs
in 2000 and 2001 are a direct result of the interactions between floodwaters and overfishing," Eggle...
UF study: Barren Siberia, of all places, may be original home to animal life
...ggests that trilobites, the long-ago forbearers of crabs
and lobsters, originated in present-day Siberia when it was a separate continent from Asia and located much farther south. Trilobites probably evolved in Siberia millions of years before they appear in the fossil record, the analysis suggests. In Li...
Congress allocates funding for horseshoe crab research center
...s essential species," explains Berkson. Horseshoe crabs
are an important species at the center of a major ...ill include a trawl survey (counting the number of crabs
in a given area) to estimate population size; a study to identify historic, current and probable fut...
Ghost crab fossils haunt area beaches
...ors. Such whole-body deposits of fossilized ghost crabs
are rare on the east coast of the U.S., down to Brazil. That some of the fossils are as "young" as they are is also significant. Poor fossilization normally occurs in pure, clean sand exposed to tidal actions. The same process that produced the coqui...
Live seafood trade linked to species invasions
...ions of non-native marine species, including green crabs
and Chinese mitten crabs
into northeast Pacific waters. Without regulation, the trade will almost certainly lead to even more...
Fat chance for hosts
...er snail per day, which encyst on other snails and crabs
as second intermediate hosts. Birds which eat the snails and crabs
complete the parasite's life cycle. Fingerut and his colleagues Cheryl Ann Zimmer and Richard Zimmer...
...ay have burrowed deeper to evade predation or that crabs
may have eaten clams at shallower depths. Whitlow believes that the bivalves' increased shell mass may be the result of slower growth rates of deeper burrowing clams. "Invasive aliens with thrifty genes: Diabetic feral swine on a southeastern coasta...
Invasive marine animals get bigger
...n maximum size of up to 40 percent. European green crabs
and Chinese mitten crabs, both prominent nuisance species in U.S. waters, were about 20 percent bigger than in their native habitat. Only one, the gem clam, showed any sign of a decrease. The increases in body size were not clearly linked to differen...
Safe is sexy
... by staying with a male in his burrow. These small crabs
are at great risk of predation from ever-present shore birds. When moving between burrows they reduce this risk in part by running to objects that provide cover. Christy, from the Smithsonian Tropical Research Institute (STRI) in Panama, Julia Baum,...
Crabs switch skeleton types
...n being flaccid and mostly immobile after molting, crabs
switch to what's called hydrostatic support. That...ble force." When they need more room to grow, blue crabs
swallow a lot of water to puff themselves up and then crack apart and discard their old shells. With...
Cold-climate creatures may be the ultimate survivors of global warming, study finds
...examined the effect of climate change on porcelain crabs
(genus Petrolisthes) inch-long invertebrates that... Pacific Ocean. Stillman discovered that porcelain crabs
in the cool Pacific Northwest have the ability to adjust to larger increases in habitat temperature ...
Dinosaur, crab fossils reveal ecosystem secrets
...not commonly discovered together," said Smith, of crabs
and dinosaurs. Smith made international news in 2...riya Oasis. "There have been anecdotal mentions of crabs
with dinosaurs, but those remains turned out to be lobsters or ghost shrimp. Even if the time gap ...
Theyre healthier: With fewer parasites, invaders gain competitive edge over native species
...ed the crabs. Where the barnacles were common, the crabs
were small and rare. Conversely, the scientists found that crabs
were big and abundant in areas where barnacles were uncommon. Green crabs
have been introduced arou...
Researchers find invasive species are healthy species They leave their parasites behind
.... In northern New England, the advent of the green crabs
has been associated with the demise of the softshe...ed the crabs. Where the barnacles were common, the crabs
were small and rare. Conversely, the scientists found that crabs
were big and abundant in areas wher...
Sex, flounder and donuts
...an artificial bait to replace the use of horseshoe crabs
by fishermen. Brian Allee will take over as director of the Alaska Sea Grant College Program. Allee returns to Alaska from Portland, Oregon, where he has served the Northwest Power Planning Council as Manager of Policy and Program Implementation, Fi...
UC Berkeley, Joint Genome Institute target chloroplasts for clues to green plant evolution
...from the ocean earlier than insects. Crustaceans - crabs
and lobsters - are more closely related to insects than are millipedes and centipedes, he said. Boore, Mishler and other members of the collaboration hope to find chloroplast as well as plant mitochondrial genes that change slowly over time, and thus...
Without blue crabs, southern salt marshes wash away, study finds
PROVIDENCE, R.I. -- Scale back the harvest of blue crabs
now, say Brown University biologists. Their new study suggests that current over-harvesting of blue crabs
may be triggering the colossal die-off of salt marshes across the southeastern United States and may...
Scientists find cause of dead crabs, fish off coast
...orded more of the same - dead wolf eels, Dungeness crabs
and sculpins as well as smaller numbers of dead li.... "If this happens for a day or two, the fish and crabs
probably survive," Grantham said. "But over a period of time, perhaps 3-5 days or longer, the oxygen...
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