Chondrichthyes


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Related to Chondrichthyes: class Chondrichthyes

Chondrichthyes

a class of the phylum Chordata containing the cartilaginous fish, sharks, rays and chimaeras. In some classifications, the term is synonymous with ELASMOBRANCHII. They are the lowest vertebrates with complete and separate vertebrae, moveable jaws and paired appendages. All are predators and virtually all are marine. They are characterized by the absence of true bone and the presence of CLASPERS (1) in males, and DENTICLES.
References in periodicals archive ?
In all members of the Gnathostomata except birds (Aves), the aqp0 genes encode 263 amino acids with less than 32% of the residues substituted among Chondrichthyes, Actinopterygii, Actinistia, and Tetrapoda.
Her work was chondrichthyes, or fish with skeletons of cartilage rather than bone.
100 16,6 52 33,3 Anuro rana 2 0,0 1 0,6 Total 2 0,0 1 0,6 Anfibios Carcharhinidae tiburones 1 0,0 1 0,6 del requiem Lamniformes tiburones 2 0,0 1 0,6 Chondrichthyes pescados 2 0,0 0 0,0 nn cartilaginosos no identificados Total 5 0,0 2 1,3 Chondrichthyes Trichomycterus bagre/suche 4 0,0 2 1,3 sp.
Phase II (Layer 7) Taxon Common NISP %NISP MNI %MNI name Chondrichthyes (Cartilagenous fishes) Elasmobranchii sharks and rays 74 3.
Chondrichthyes Carcharhinidae Rhizoprionodon lalandii Dasyatidae Dasyatis guttata Gymnuridae Gymnura micrura Myliobatidae Myliobates narinari Myliobatidae Rhynoptera bonasus Osteichthyes -- Nao identificado -- Nao identificado Ariidae Genidens genidens Carangidae Selene vomer Carangidae Carangoides bartholomaei Carangidae Trachinotus carolinus Carangidae Trachinotus goodei Carangidae Caranx latus Carangidae Nao identificado Centropomidae Centropomus sp.
Kingdom Animalia Phylum Chordata Class Chondrichthyes Subclass Elasmobranchii Superorder Batoideo OrderRajiformes Families Anacanthobatidae Plesiobatidae Dasyatidae Potamotrygonidae Gymnuridae Rajidae Hexatrygonidae Rhinobatidae Myliobatidae Urolophiidae Table 2: Antibiotics used in the treatment of uncomplicated infections and wound prophylaxis.
The improvement of knowledge on chondrichthyes (sharks, rays and chimaeras) and the fisheries involved, as well as the precise assessment of the impact of fishing activities, both on stocks and on the socio-economic level, are indispensable before any decision is taken involving the management and protection measures for sharks.
CLASE CHONDRICHTHYES SUBCLASE SELACHIIMORPHA ORDEN HEXANCHIFORMES FAMILIA HEXANCHIDAE Notorynchus Ayres 1855
They found 42 cases in sharks and related chondrichthyes, and noted that the existence of chondrichthyan neoplasms has been known for more than 150 years (Cancer Res.
Instead, they belong in the class Chondrichthyes, where fish have skeletons made of cartilage (tough, flexible tissue).