The blue crab (Callinectes sapidus) plays an important economic and ecological role in estuaries and coastal habitats from the Gulf of Mexico to the east coast of North America, but demographic assessments are limited by length-based methods. We applied an alternative aging method using bio­ chemical measures of metabolic byprod­ ucts (lipofuscins) sequestered in the neural tissue of eyestalks ...

Fifteen years after the first capture of a specimen Charybdis japonica in Adriatic Sea, we report collection two more specimens near port Ravenna. This swimming crab, native from North Western Pacific, has already proved its invasive capacity New Zealand coastal waters. Its possible establishment northern lagoons may represent treat for local Manila clam fishery and aquaculture activities.

BACKGROUND The Chinese mitten crab, Eriocheir sinensis, is one of the most studied and economically important crustaceans in China. Its transition from a swimming to a crawling method of movement during early development, anadromous migration during growth, and catadromous migration during breeding have been attractive features for research. However, knowledge of the underlying molecular mechan...

The chemosensory signal structure governing the upstream progress of blue crabs to an odorant source was examined. We used a three-dimensional laser-induced fluorescence system to collect chemical concentration data simultaneously with behavior observations of actively tracking blue crabs (Callinectes sapidus) in a variety of plume types. This allowed us to directly link chemical signal propert...

the distribution, body size, and egg diameter and volume of ovigerous blue swimming crabs, portunus pelagicus , were examined according to habitat type and egg color in lasongko bay, central buton, indonesia between april 2013 and march 2014. ovigerous female crabs were sampled using gillnets and traps at seven stations. based on the results, the ovigerous female crabs with yellow to dark gray ...

7 Short title: Landscape-based geostatistics 8 9 Olaf P. Jensen, Mary C. Christman, and Thomas J. Miller 10 11 12 University of Maryland Center for Environmental Science Chesapeake Biological 13 Laboratory, P.O. Box 38, 1 Williams St., Solomons, MD 20688 14 15 Current address: University of Wisconsin Center for Limnology, 680 N Park St., 16 Madison, WI 53706, USA 17 18 Dept. Animal and Avian Sc...