elasmobranch

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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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.
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References in periodicals archive ?
Based on our observation of the behaviors exhibited by the rays during the anesthesia baths, we suggest that for elasmobranchs some adaptations should be made to the tables that are used for evaluating anesthesia among teleosts.
Implications for fisheries management Small and benthic (or benthopelagic) elasmobranch species tend to exhibit more distinct population structures at smaller spatial scales than those exhibited by large pelagic species (Larson et al., 2017).
Garner, "A Retrospective Study of Disease in Elasmobranchs," Veterinary Pathology, vol.
Gill, Effects of EMFs From Undersea Power Cables on Elasmobranchs and Other Marine Species, OCS Study BOEMRE 2011-09, United States Department of the Interior, Bureau of Ocean Energy Management, Regulation, and Enforcement, Pacific OCS Region, Camarillo, CA, USA, 2011.
In most elasmobranch studies, sagittally sectioned vertebrae are selected as the primary age structure (Cailliet and Goldman, 2004), although clarity of annuli within vertebrae is largely species-specific.
Cailliet (1990) lists only 39 species of elasmobranchs for which there are published or ongoing age verification studies (McFarlane et al., 2002).
The bycatch abundance data were then separated into invertebrate and vertebrates (teleosts and elasmobranchs), because of the different methods of sampling used for each of these groups.
Other occurrences of Port Jackson sharks and other elasmobranchs at Point Cooke Marine Sanctuary
Besides the teeth of the elasmobranch Karksiodus and the scales of the putative chondrichthyan Karksilepis parva Marss, the vertebrate assemblage from the Karksi locality also contains the scales of typical chondrichthyans.