crabs

Crabs go deep to avoid hot water

harminka — Thu, 02 Jul 2009 11:50:11 -0500

Researchers from the National Oceanography Centre, Southampton, have drawn together 200 years' worth of oceanographic knowledge to investigate the distribution of a notorious deep-sea giant – the king crab. The results, published this week in the Journal of Biogeography, reveal temperature as a driving force behind the speciation and radiation of a major seafloor predator; globally, and over tens of millions of years of Earth's history.

Turning freshwater farm ponds into crab farms

harminka — Fri, 10 Oct 2008 07:50:01 -0500

Work by researchers at North Carolina State University is leading to a new kind of crab harvest – blue crabs grown and harvested from freshwater ponds, instead of from the sea.

Shell-breaking crabs lived 20 million years earlier than thought

harminka — Wed, 23 Apr 2008 01:53:13 -0500

While waiting for colleagues at a small natural history museum in the state of Chiapas, Mexico last year, Cornell paleontologist Greg Dietl chanced upon a discovery that has helped rewrite the evolutionary history of crabs and the shelled mollusks upon which they preyed.

New 150 Million-Year-Old Crab Species Discovered

harminka — Thu, 18 Oct 2007 12:54:45 -0500

Researchers from Kent State University and the University of Bucharest, Romania, have discovered a new primitive crab species Cycloprosopon dobrogea in eastern Romania. Previously unexamined, these ancient crabs from the Prosopidae family existed more than 150 million years ago during the Jurassic period

Chinese takeaway in Wadden Sea

harminka — Wed, 26 Sep 2007 05:24:24 -0500

Shore crabs (Carcinus maenas) catch their food at food-rich spots and subsequently eat it elsewhere. With this takeaway strategy the crabs maximise their food uptake and keep competing crabs at a distance, says Dutch researcher Isabel Smallegange.

Invasive crab species in Panama Canal expansion area identified

harminka — Thu, 20 Sep 2007 10:16:51 -0500

A Smithsonian scientist and colleague report that a potentially harmful, invasive crab species that has spread to several countries is now established and reproducing in Panama. The researchers report that Harris mud crabs are reproducing in the small, man-made lake designated to become the third set of locks in Panama’s new $5 billion canal expansion project.

Tropical crab invades Georgia oyster reefs

harminka — Wed, 05 Sep 2007 02:34:31 -0500

A dime-sized tropical crab that has invaded coastal waters in the Southeast United States is having both positive and negative effects on oyster reefs, leaving researchers unable to predict what the creature’s long-term impact will be.

First finding of metabolite in 1 sex only

harminka — Wed, 22 Aug 2007 08:15:07 -0500

Researchers at the University of Illinois at Chicago have discovered a chemical compound in male blue crabs that is not present in females -- the first time in any species that an entire enzyme system has been found to be activated in only one sex.

Furry-clawed Asian crabs found in Delaware, Chesapeake Bays

harminka — Mon, 11 Jun 2007 03:40:32 -0500

Chinese mitten crabs, first reported in the Chesapeake Bay, are more widespread than initially thought. Four crabs have now been caught in Delaware Bay during the last week of May 2007, and may occur in other waters of the U.S. east coast.

Marine sediment microbial fuel cells get nutritional boost

harminka — Tue, 05 Jun 2007 03:31:43 -0500

Discarded crab and lobster shells may be the key to prolonging the life of microbial fuel cells that power sensors beneath the sea, according to a team of Penn State researchers.

New marine species discovered in eastern Pacific

harminka — Fri, 09 Mar 2007 05:20:36 -0600