Abstract
Historically, the decapod crustacean circulatory system has been classed as open. However, recent work on the blue crab,Callinectes sapidus, suggests the circulatory system may be more complex than previously described. Corrosion casting techniques were refined and used to map the circulatory system of a variety of crab species (order: Decapoda; family: Cancridae) to determine if the complexity observed in the blue crab was present in other species. Seven arteries arose from the single chambered heart. The anterior aorta, the paired anterolateral arteries, and the paired hepatic arteries exited from the anterior aspect of the heart. The small-diameter posterior aorta exited posteriorly from the heart. Exiting from the ventral surface of the heart, the sternal artery branched to supply the legs and mouthparts of the crab. These arteries were more complex than previously described, with arterioles perfusing all areas of the body. The arterioles split into fine capillary-like vessels. Most of these capillaries were blind ending. However, in several areas (antennal gland, supraesophageal ganglion) complete capillary beds were present. After passing through the capillary-like vessels, blood drained into a series of sinuses. However, rather than being arbitrary spaces as previously described, scanning electron micrographs showed the sinuses to be distinct units. Most of the sinuses formed a series of flattened membrane-bound lacunae. This complexity may qualify the decapod crustacean circulatory system as one that is “partially closed” rather than open.
Publisher
Cambridge University Press (CUP)
Reference55 articles.
1. Airriess, C.N. & McMahon, B.R. (1996).Short-term emersion affects cardiac function and regional hemolymphdistribution in the crab Cancer magister .J Exp Biol 199,1–10.
2. Taylor, H.H. & Taylor, E.W. (1992).Gills and lungs: The exchange of gases and ions. InMicroscopic Anatomy of the Invertebrates, Harrison, F.W. & Humes, A.G. (Eds.),vol. 10, pp.203–293.New York:Wiley Liss.
3. Martin, G.G. , Hose, J.E. , & Corzine, C.J. (1989).Morphological comparisons of the major arteries in the ridgebackprawn, Sicyonia ingentis .J Morphol 200,175–183.
4. Taylor, H.H. & Greenaway, P. (1979).The structure of the gills and lungs of the arid zone crabHolthusiana (Austrothelphusa) transversa(Brachyura, Sundathelphusidae) including observationson arterial vessels within the gills.J Zool (Lond) 189,359–384.
5. Wilkens, J.L. (1999).The control of cardiac rhythmicity and of blood distribution incrustaceans.Comp Biochem Physiol 124A,513–538.
Cited by
46 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献