Intraspecific aggregation structure of a shoal of a Western Mediterranean (Catalan coast) deep-sea shrimp, Aristeus antennatus (Risso, 1816), during the reproductive period
11 pages, 11 figures, 3 tables
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National Shellfisheries Association
2003-09
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| Online Access: | http://hdl.handle.net/10261/76021 |
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dig-icm-es-10261-760212019-03-04T13:54:37Z Intraspecific aggregation structure of a shoal of a Western Mediterranean (Catalan coast) deep-sea shrimp, Aristeus antennatus (Risso, 1816), during the reproductive period Sardà, Francisco Company, Joan B. Castellón, Arturo 11 pages, 11 figures, 3 tables The deep-sea rose shrimp, Aristeus antennatus, constitute an important fishery resource in the Western Mediterranean Sea. The spatio-temporal behavioral pattern of A. antennatus is well-known, with the species forming seasonal aggregations on the middle slope at depths between 400 and 900 m. These aggregations form between late winter and early summer. The object of the present study is to determine the internal structure of shoals of the western Mediterranean (Catalan coast) rose shrimp along the slope on the grounds where the species is fished (from 400 to 1000 m) at the time of peak density during the reproductive period. Interactions between fishing and research vessel have been used to sample synchronically and bathymetrically the shoals of the deep-sea shrimp to determine intra and interspecific shoal structures. The results of this study on A. antennatus have specifically shown that (1) The pattern shrimp shoal distribution is such that density rises rapidly in the portion located in the shallower distribution range of this species and then gradually decreases at greater depths; (2) the distribution of this resource straddles both sides of the ecological boundary located at 900 m, though with changes in the sex-ratio and individual size; (3) species coexisting with this shrimp species are concentrated at depths other than the depths of peak shrimp density; (4) commercial trawlers deploy according to the abundance pattern of the resource; and (5) the reproductive portion of the stock is heavily exploited Funding for this research was provided by the CICYT of Spain (Project MAR97/()640 C02-01 ) co-ordinated by Dr. J. Lleonart Peer Reviewed 2013-05-14T09:19:00Z 2013-05-14T09:19:00Z 2003-09 2013-05-14T09:19:00Z artículo http://purl.org/coar/resource_type/c_6501 issn: 0730-8000 Journal of Shellfish Research 22(2): 569-579 (2003) http://hdl.handle.net/10261/76021 en none National Shellfisheries Association |
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| language |
English |
| description |
11 pages, 11 figures, 3 tables |
| format |
artículo |
| author |
Sardà, Francisco Company, Joan B. Castellón, Arturo |
| spellingShingle |
Sardà, Francisco Company, Joan B. Castellón, Arturo Intraspecific aggregation structure of a shoal of a Western Mediterranean (Catalan coast) deep-sea shrimp, Aristeus antennatus (Risso, 1816), during the reproductive period |
| author_facet |
Sardà, Francisco Company, Joan B. Castellón, Arturo |
| author_sort |
Sardà, Francisco |
| title |
Intraspecific aggregation structure of a shoal of a Western Mediterranean (Catalan coast) deep-sea shrimp, Aristeus antennatus (Risso, 1816), during the reproductive period |
| title_short |
Intraspecific aggregation structure of a shoal of a Western Mediterranean (Catalan coast) deep-sea shrimp, Aristeus antennatus (Risso, 1816), during the reproductive period |
| title_full |
Intraspecific aggregation structure of a shoal of a Western Mediterranean (Catalan coast) deep-sea shrimp, Aristeus antennatus (Risso, 1816), during the reproductive period |
| title_fullStr |
Intraspecific aggregation structure of a shoal of a Western Mediterranean (Catalan coast) deep-sea shrimp, Aristeus antennatus (Risso, 1816), during the reproductive period |
| title_full_unstemmed |
Intraspecific aggregation structure of a shoal of a Western Mediterranean (Catalan coast) deep-sea shrimp, Aristeus antennatus (Risso, 1816), during the reproductive period |
| title_sort |
intraspecific aggregation structure of a shoal of a western mediterranean (catalan coast) deep-sea shrimp, aristeus antennatus (risso, 1816), during the reproductive period |
| publisher |
National Shellfisheries Association |
| publishDate |
2003-09 |
| url |
http://hdl.handle.net/10261/76021 |
| work_keys_str_mv |
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| _version_ |
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