Day-night feeding by decapod crustaceans in a deep-water bottom community in the western Mediterranean

Day-night feeding by decapod crustaceans in a deep-water bottom community in the western Mediterranean

17 pages

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Main Author: Cartes, Joan Enric
Format: artículo biblioteca
Published: Marine Biological Association of the United Kingdom 1993
Online Access:http://hdl.handle.net/10261/275731
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spelling dig-icm-es-10261-2757312022-07-18T08:03:48Z Day-night feeding by decapod crustaceans in a deep-water bottom community in the western Mediterranean Cartes, Joan Enric 17 pages Changes in the composition of the diet, foregut fullness, and the degree of digestion of ingested food were taken into account in determining diel feeding activity of the numerically dominant species of decapod crustaceans dwelling on the Catalan Sea Slope (western Mediterranean). Two 24-h periods were sampled at two different stations on the upper middle slope (between 400 and 710 m) using bottom trawls. Additional foregut fullness data for Aristeus antennatus and Acanthephyra eximia were recorded below 1000 m. The influence of the relatively shallow-living mesopelagic fauna (Pasiphaeidae, Sergestes arcticus, euphausiids, and fishes) over the 24-h cycle apparently had a large effect on the feeding activity rhythms in the deep-sea decapods studied. Species can be classified into two different groups according to their feeding patterns. Thus, species whose diet was based on pelagic prey (Plesionika edwardsi, Plesionika martia, and A. eximia) exhibited a feeding pattern conditioned to the availability of this type of prey. In contrast, in those species in which pelagic prey contributed only a small portion of the diet (A. antennatus, Plesionika acanthonotus, Polycheles typhlops, and Geryon longipes) no variations in the foregut fullness or in the percentage of undigested prey in foreguts during the diel feeding cycles were recorded. The decrease in the influence of the abundance of mesopelagic fauna with depth, with a commonly accepted boundary at around 1000 m would be responsible for the progressive flattening out of activity rhythms among the species dwelling on the lower slope. Foregut fullness values for certain species with broad depth distributions in the Catalan Sea (A. antennatus, A. eximia), would support this hypothesis. © 1993, Marine Biological Association of the United Kingdom. All rights reserved 2022-07-18T08:00:02Z 2022-07-18T08:00:02Z 1993 2022-07-18T08:00:03Z artículo issn: 0025-3154 e-issn: 1469-7769 Journal of the Marine Biological Association of the United Kingdom 73(4): 795-811 (1993) http://hdl.handle.net/10261/275731 10.1017/S0025315400034731 https://doi.org/10.1017/S0025315400034731 Sí none Marine Biological Association of the United Kingdom
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 17 pages
format artículo
author Cartes, Joan Enric
spellingShingle Cartes, Joan Enric
Day-night feeding by decapod crustaceans in a deep-water bottom community in the western Mediterranean
author_facet Cartes, Joan Enric
author_sort Cartes, Joan Enric
title Day-night feeding by decapod crustaceans in a deep-water bottom community in the western Mediterranean
title_short Day-night feeding by decapod crustaceans in a deep-water bottom community in the western Mediterranean
title_full Day-night feeding by decapod crustaceans in a deep-water bottom community in the western Mediterranean
title_fullStr Day-night feeding by decapod crustaceans in a deep-water bottom community in the western Mediterranean
title_full_unstemmed Day-night feeding by decapod crustaceans in a deep-water bottom community in the western Mediterranean
title_sort day-night feeding by decapod crustaceans in a deep-water bottom community in the western mediterranean
publisher Marine Biological Association of the United Kingdom
publishDate 1993
url http://hdl.handle.net/10261/275731
work_keys_str_mv AT cartesjoanenric daynightfeedingbydecapodcrustaceansinadeepwaterbottomcommunityinthewesternmediterranean
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