STATIC AND FUNCTIONAL-ANATOMY OF THE CARDIOVASCULAR-SYSTEM OF THE PORTUNID CRAB PORTUNUS-PELAGICUS (LINNAEUS) .1. STATIC ANATOMY

The position, relative dimensions, and anatomical relationships of the heart (ventricle), cor frontale, and main arteries of Portunus pelagi cus are described in detail, based on radiographs, detailed dissection , and histology. Brief descriptions are also provided of the pericardi um, branchial sinuses, and general body hemolymph sinuses. Total fluid content and hemolymph volume were calculated as 66.5% (SD = 5.3%, N = 10) and 30.4% (SD = 3%, N = 8) of the crab's body displacement volume .