Feeding habits of pasiphaeid shrimps close to the bottom on the Western Mediterranean slope

Feeding habits of pasiphaeid shrimps close to the bottom on the Western Mediterranean slope

10 pages, 5 figures, 8 tables

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Main Author: Cartes, Joan Enric
Format: artículo biblioteca
Published: Springer 1993-11
Online Access:http://hdl.handle.net/10261/283063
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spelling dig-icm-es-10261-2830632022-11-17T08:49:15Z Feeding habits of pasiphaeid shrimps close to the bottom on the Western Mediterranean slope Cartes, Joan Enric 10 pages, 5 figures, 8 tables The composition of the diet and daily cicle of predatory activity of pasiphaeid shrimps in the Northwestern Mediterranean were established; special attention was focussed on nocturnal feeding habits close to the bottom. Daily activity in both species was studied in two continuous 24-h sampling periods. Samples were obtained using bottom trawls between 1988 and 1990. Both species fed on benthic prey items at night. The nocturnal diet of Pasiphaea multidentata consisted of gammarid amphipods, isopods (Cirolana borealis) and macruran decapods (Calocaris macandreae). Nocturnal feeding activity was carried out only by large specimens (cephalothorax length >28 mm), which stayed close to the bottom during the nighttime. In contrast, the specimens collected during the daytime exhibited highly digested remains of pelagic prey (hyperiids, fishes, euphausiids, chaetognaths) ingested as a result of predatory higher activity in the water column the night before. The feeding strategy of P. sivado was parallel to that of P. multidentata. At night large specimens were located near the bottom and fed on suprabenthic gammarid amphipods. This nocturnal feeding activity by both these mesopelagic pasiphaeid species furnishes evidence of energy transfer from the benthos to the planktonic system in bathyal communities. Changes were observed in the diet of P. multidentata with depth. Crustaceans made up a larger share of the diet of P. multidentata on the lower slope than on the upper middle slope, probably because of changes undergone by bathyal communities with increasing depth. The feeding rate was higher in the submarine canyons, where the diet is also more specialised. Dietary overlap between the two pasiphaeids was very low, due to the different size range of prey exploited 2022-11-17T08:40:03Z 2022-11-17T08:40:03Z 1993-11 2022-11-17T08:40:03Z artículo issn: 0025-3162 e-issn: 1432-1793 Marine Biology 117(3): 459-468 (1993) http://hdl.handle.net/10261/283063 10.1007/BF00349322 https://doi.org/10.1007/BF00349322 Sí none Springer
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
description 10 pages, 5 figures, 8 tables
format artículo
author Cartes, Joan Enric
spellingShingle Cartes, Joan Enric
Feeding habits of pasiphaeid shrimps close to the bottom on the Western Mediterranean slope
author_facet Cartes, Joan Enric
author_sort Cartes, Joan Enric
title Feeding habits of pasiphaeid shrimps close to the bottom on the Western Mediterranean slope
title_short Feeding habits of pasiphaeid shrimps close to the bottom on the Western Mediterranean slope
title_full Feeding habits of pasiphaeid shrimps close to the bottom on the Western Mediterranean slope
title_fullStr Feeding habits of pasiphaeid shrimps close to the bottom on the Western Mediterranean slope
title_full_unstemmed Feeding habits of pasiphaeid shrimps close to the bottom on the Western Mediterranean slope
title_sort feeding habits of pasiphaeid shrimps close to the bottom on the western mediterranean slope
publisher Springer
publishDate 1993-11
url http://hdl.handle.net/10261/283063
work_keys_str_mv AT cartesjoanenric feedinghabitsofpasiphaeidshrimpsclosetothebottomonthewesternmediterraneanslope
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