Fecundity and Egg Diameter of Primiparous and Multiparous Blue Crab Callinectes sapidus (Brachyura: Portunidae) in Mississippi Waters
نویسندگان
چکیده
منابع مشابه
Molecular indicators of hypoxia in the blue crab Callinectes sapidus
Occurrence of hypoxia in estuarine waters is increasing, and recovery of impacted estuaries is slow. Detection of early effects of hypoxia is needed for timely remedial action to be taken. Here we examine the use of hypoxia-responsive gene and protein expression profiles in the blue crab Callinectes sapidus as early indicators of impacts of hypoxia. We cloned 23 potential hypoxiaresponsive gene...
متن کاملSexual Competition Among Male Blue Crab, Callinectes sapidus.
Experiments and field data on blue crab, Callinectes sapidus, from mid-Chesapeake Bay between 1991 and 1994 were used to test whether large males have advantages over small males in accessing females and in sperm competition. In the field, large males were paired more often, especially with large, more fecund females. However, the variance in the relationship between male and female size in mat...
متن کاملFecundity, reproductive seasonality and maturation size of Callinectes sapidus females (Decapoda: Portunidae) in the Southeast coast of Brazil.
C sapidus fisheries has a significant influence on the economy of some countries in North America and has a relative extensive literature in these regions. However, only few papers discuss the ecology of C. sapidus in the South Atlantic, despite its economic importance in that region. We studied the fecundity, reproductive seasonality and maturation size of C. sapidus females captured in the So...
متن کاملUltrastructure, histochemistry, and mineralization patterns in the ecdysial suture of the blue crab, Callinectes sapidus.
The ecdysial suture is the region of the arthropod exoskeleton that splits to allow the animal to emerge during ecdysis. We examined the morphology and composition of the intermolt and premolt suture of the blue crab using light microscopy and scanning electron microscopy. The suture could not be identified by routine histological techniques; however 3 of 22 fluorescein isothiocyanate-labeled l...
متن کاملThe effects of hypoxia and pH on phenoloxidase activity in the Atlantic blue crab, Callinectes sapidus.
In its natural coastal and estuarine environments, the blue crab, Callinectes sapidus, often encounters hypoxia, accompanied by hypercapnia (increased CO2) and an associated decrease in water pH. Previous studies have shown that exposure to hypercapnic hypoxia (HH) impairs the crab's ability to remove culturable bacteria from its hemolymph. In the present study we demonstrate that the activity ...
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ژورنال
عنوان ژورنال: Journal of Crustacean Biology
سال: 2012
ISSN: 0278-0372,1937-240X
DOI: 10.1163/193724011x615325