Data/hora: 04/06/2024 10:47:04

Provedor de dados: | 5
País: | France
Título: | Observations of chondrichthyan fishes (sharks,rays and chimaeras) in the Bay of Biscay (North-eastern Atlantic) from submersibles.
Autores: | Lorance, Pascal; Latrouite, Daniel; Seret, Bernard.
Data: | 2000
Ano: | 2000
Palavras-chave: | Submersible; Deep Sea; Bay of Biscay; ANE; Chondrichthyans.
Resumo: | Forty one manned submersible dives were carried out during 2 cruises in the Bay of Biscay covering a range of depth from about 100 to 2100 m. Chondrichthyan species were observed in most of the dives, some of them were easily identified and their behaviour could be studied. Twenty-two chondrichthyan species (9 sharks, 8 rays and 5 chimaeras) were recorded. Shark species were always seen active except Scyliorhinus canicula and Galeus melastomus. Some representatives were found motionless on the bottom, sometimes forming groups for the first species. Chimaeras appeared to strongly react to the presence of the submersible. The density of chondrichtyes and their relative frequency in the total fish assemblage were estimated, the results are globally consistent with former knowledge and the differences with results from trawl surveys are discussed. The observations presented here suggest peak of Chimaera monstrosa abundance at upper slope depth (200-500 m) that was not documented formerly for that area.
Tipo: | Text
Idioma: | Inglês
Identificador: | http://archimer.ifremer.fr/doc/2000/acte-2571.pdf
Editor: | SéretB. &amp; J.-Y. Sire, eds Paris: Soc. Fr. lchtyol. &amp; IRD, 2000: 29-45
Relação: | http://archimer.ifremer.fr/doc/00000/2571/
Formato: | application/pdf