elasmobranch

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Related to Elasmobranchs: subclass Elasmobranchii, Chondrichthyans, Chondrichthye, Cartilaginous fishes

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 ?
When a fish was caught, it was identified, measured (PCL, FL, TL, STL), the sex of elasmobranchs was determined, and treatment type was noted.
Demographic modeling has been conducted on many elasmobranch populations when there are insufficient catch, effort, and abundance data available to conduct a full stock assessment (Simpfendorfer, 1998; Romine et al.
Many elasmobranchs are at or near the apex of marine food webs and thus their removal can have a significant impact on the trophic structure of an ecosystem (Camhi et al.
On the other hand, although the GGF models also produced realistic growth parameters, this growth function has been described as better suited for batoids (or elasmobranchs that hatch from eggs), for which volume increases more with age than with length (e.
In order to minimize the impact of the derbies on the elasmobranchs of Elkhorn Slough and to assist in various research projects, a tag-and-release program was initiated in 1988 through a cooperative effort between MLML, the PVRGC, Monterey Bay Aquarium, and the Elkhorn Slough Foundation.
A novel statistical method for validating the periodicity of vertebral growth band formation in elasmobranch fishes.
The round stingray, Urobatis halleri, is a demersal elasmobranch that resides in sandy or muddy bays and shorelines to a depth of 21 m, ranging from Eureka, California to Panama (Knopf 2000).
Sustainability of elasmobranchs caught as bycatch in a tropical prawn (shrimp) trawl fishery.
The life history of elasmobranchs is characterized by slow growth rates, late maturity, long gestation periods, and the production of a small number of offspring (Holden, 1973; Pratt and Casey, 1990).
Bycatch in this fishery includes teleosts, elasmobranchs, and on rare occasions marine mammal and sea turtle species.
In this context, changes in the functioning of marine ecosystems, as a consequence of overfishing of elasmobranchs, will, according to Stevens et al.