elasmobranch


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Related to elasmobranch: Elasmobranchii, subclass Elasmobranchii, Cartilaginous fishes, Chondrichthyans

elasmobranch

(ĭlăs`məbrăngk), cartilaginous fish, member of the subclass Elasmobranchii of the vertebrate class Chondrichthyes (see ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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). This group includes sharksshark,
member of a group of almost exclusively marine and predaceous fishes. There are about 250 species of sharks, ranging from the 2-ft (60-cm) pygmy shark to 50-ft (15-m) giants. They are found in all seas, but are most abundant in warm waters.
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, skates, and raysray,
extremely flat-bodied cartilaginous marine fish, related to the shark. The pectoral fins of most rays are developed into broad, flat, winglike appendages, attached all along the sides of the head; the animal swims by rippling movements of these wings.
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.
References in periodicals archive ?
Elasmobranch fishes are generally absent in the bestiaries, with the mention of dogfishes being the exception (probably from "The Etymologies"?
Populations of sharks and rays are more susceptible to fishing mortality than teleosts, as elasmobranchs generally mature late, have long life spans, and give birth to few (but well-developed) offspring.
The Balof 2 excavation yielded 20 elasmobranch vertebrae and 13 shark teeth in Horizons IV through I dated to <10 500 bp (SUA-2502).
Late Cretaceous elasmobranchs from the Mississippi east Texas embayments of the Gulf Coastal Plain.
In most age and growth studies of teleost fishes, otoliths or scales are used; however, vertebrae are the most widely used structures for age determination in elasmobranch fishes, but dorsal spines (usually in Squalidae) and caudal thorns (in skates) have also been used (Campana, 2001; Caillet and Goldman, 2004, Goldman, 2004; Coelho and Erzini, 2007; Moura et al.
Scientifically referred to as elasmobranch, sharks and their populations in the Gulf could see serious rates of decline in the years ahead if current rates of capture continue, scientists say.
Saw fish (Pristiformes: Pristidae) are a group of seven species of elasmobranch that have a distinctive elongate tooth rostrum (normally referred to as the saw).
He has authored more than 40 scientific papers on topics ranging from aquarium procedures to fish hematology to the feeding and reproduction of sharks, and is a former member of the board of directors of the American Elasmobranch Society (devoted to the study of sharks and related marine life), for which he served as president in 1992-93.
A critical review of methods of studying fish feeding based on analysis of stomach contents: application to elasmobranch fishes.
80 SPATIAL DISTRIBUTION, HABITAT SELECTION, AND EFFECTS OF TEMPERATURE ON ELASMOBRANCH SPECIES AT BIG FISHERMAN'S COVE, SANTA CATALINA ISLAND, CA
The other, the NSU Save Our Seas Shark Center USA, conducts research, education and conservation projects aimed at identifying and finding solutions to the major threats facing the world's elasmobranch (shark and ray) populations.