Data/hora: 10/06/2024 01:31:34

Provedor de dados: | 49
País: | Brazil
Título: | Feeding habits of the blue shark (Prionace glauca) off the coast of Brazil
Autores: | Vaske Júnior,Teodoro; Lessa,Rosangela Paula; Gadig,Otto Bismarck Fazzano.
Data: | 2009-09-01
Ano: | 2009
Palavras-chave: | Elasmobranch; Carcharhinidae; Diet.
Resumo: | Stomachs from 222 blue sharks collected along the Brazilian coast were analyzed - 116 from the northeastern region and 106 from the southern region. A total of 51 prey taxa were identified. The most important prey items in the southern region were Mysticeti whales, teleosteans, the gempylid Ruvettus pretiosus and the nomeid Arioma bondi. Cephalopods were more diverse, with dominance of vertical migrants Histioteuthis spp., Cranchiidae and the epipelagic octopus Ocythoe tuberculata. In the northeastern region, blue sharks consumed mainly teleosteans, including the alepisaurid Alepisaurus ferox and the gempylid Gempylus serpens. Among cephalopods, Histioteuthis spp. and the epipelagic octopus Tremoctopus violaceus were the dominant items. Predation upon schooling prey was occasional, as observed on Arioma bondi. Birds also were consumed in both regions; Puffinus gravis was the fifth most frequent item in the northeastern region. During the reproductive migration cycle, blue sharks likely prey in the thermocline, which is deeper in the northeastern region and closer to the surface in the southern region.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000300004
Editor: | Instituto Virtual da Biodiversidade | BIOTA - FAPESP
Relação: | 10.1590/S1676-06032009000300004
Formato: | text/html
Fonte: | Biota Neotropica  v.9 n.3 2009
Fonte: | info:eu-repo/semantics/openAccess