Epidemiology of Pennella sp. (Crustacea: Copepoda), in exploited Illex coindetii stock in the NE Atlantic
The spatio-temporal distribution of the mesoparasitic copepod Pennella sp. on the short-finned squid Illex coindetii was studied monthly during 1993 in the southeastern North Atlantic (Galician waters, NW Spain). A total of 600 individuals were analysed separately considering two areas (north and we...
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Consejo Superior de Investigaciones Científicas
2001
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ftdoajarticles:oai:doaj.org/article:e814e5a24400451eb0db3d0e4dbc069b 2023-05-15T17:33:00+02:00 Epidemiology of Pennella sp. (Crustacea: Copepoda), in exploited Illex coindetii stock in the NE Atlantic S. Pascual A. F. González C. Gestal E. Abollo A. Guerra 2001-12-01T00:00:00Z https://doi.org/10.3989/scimar.2001.65n4307 https://doaj.org/article/e814e5a24400451eb0db3d0e4dbc069b EN eng Consejo Superior de Investigaciones Científicas http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/661 https://doaj.org/toc/0214-8358 https://doaj.org/toc/1886-8134 0214-8358 1886-8134 doi:10.3989/scimar.2001.65n4307 https://doaj.org/article/e814e5a24400451eb0db3d0e4dbc069b Scientia Marina, Vol 65, Iss 4, Pp 307-312 (2001) pennella sp ommastrephid squids epidemiology Aquaculture. Fisheries. Angling SH1-691 article 2001 ftdoajarticles https://doi.org/10.3989/scimar.2001.65n4307 2022-12-31T07:04:50Z The spatio-temporal distribution of the mesoparasitic copepod Pennella sp. on the short-finned squid Illex coindetii was studied monthly during 1993 in the southeastern North Atlantic (Galician waters, NW Spain). A total of 600 individuals were analysed separately considering two areas (north and west) with different hydrographical characteristics. Six pennellid stages were found: a copepodite, four chalimus stages and the free-living adult male and female. Epidemiology was assessed using the parasite demographic parameters. The results revealed a marked seasonal pattern in the number of parasites in squid samples from the northern area. This seasonal pattern was not detected in squids from the western area. The observed frequency distributions of parasites on the host population were aggregative at each sampling area. Infection values were extraordinarily high when they are compared with published host-parasite records for other representatives of the genus Pennella. Advantages of the parasite aggregation pattern and possible explanations of the seasonality variations in the number of parasites observed in squid samples from the northern area are discussed. Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Scientia Marina 65 4 307 312 |
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ftdoajarticles |
language |
English |
topic |
pennella sp ommastrephid squids epidemiology Aquaculture. Fisheries. Angling SH1-691 |
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pennella sp ommastrephid squids epidemiology Aquaculture. Fisheries. Angling SH1-691 S. Pascual A. F. González C. Gestal E. Abollo A. Guerra Epidemiology of Pennella sp. (Crustacea: Copepoda), in exploited Illex coindetii stock in the NE Atlantic |
topic_facet |
pennella sp ommastrephid squids epidemiology Aquaculture. Fisheries. Angling SH1-691 |
description |
The spatio-temporal distribution of the mesoparasitic copepod Pennella sp. on the short-finned squid Illex coindetii was studied monthly during 1993 in the southeastern North Atlantic (Galician waters, NW Spain). A total of 600 individuals were analysed separately considering two areas (north and west) with different hydrographical characteristics. Six pennellid stages were found: a copepodite, four chalimus stages and the free-living adult male and female. Epidemiology was assessed using the parasite demographic parameters. The results revealed a marked seasonal pattern in the number of parasites in squid samples from the northern area. This seasonal pattern was not detected in squids from the western area. The observed frequency distributions of parasites on the host population were aggregative at each sampling area. Infection values were extraordinarily high when they are compared with published host-parasite records for other representatives of the genus Pennella. Advantages of the parasite aggregation pattern and possible explanations of the seasonality variations in the number of parasites observed in squid samples from the northern area are discussed. |
format |
Article in Journal/Newspaper |
author |
S. Pascual A. F. González C. Gestal E. Abollo A. Guerra |
author_facet |
S. Pascual A. F. González C. Gestal E. Abollo A. Guerra |
author_sort |
S. Pascual |
title |
Epidemiology of Pennella sp. (Crustacea: Copepoda), in exploited Illex coindetii stock in the NE Atlantic |
title_short |
Epidemiology of Pennella sp. (Crustacea: Copepoda), in exploited Illex coindetii stock in the NE Atlantic |
title_full |
Epidemiology of Pennella sp. (Crustacea: Copepoda), in exploited Illex coindetii stock in the NE Atlantic |
title_fullStr |
Epidemiology of Pennella sp. (Crustacea: Copepoda), in exploited Illex coindetii stock in the NE Atlantic |
title_full_unstemmed |
Epidemiology of Pennella sp. (Crustacea: Copepoda), in exploited Illex coindetii stock in the NE Atlantic |
title_sort |
epidemiology of pennella sp. (crustacea: copepoda), in exploited illex coindetii stock in the ne atlantic |
publisher |
Consejo Superior de Investigaciones Científicas |
publishDate |
2001 |
url |
https://doi.org/10.3989/scimar.2001.65n4307 https://doaj.org/article/e814e5a24400451eb0db3d0e4dbc069b |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Scientia Marina, Vol 65, Iss 4, Pp 307-312 (2001) |
op_relation |
http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/661 https://doaj.org/toc/0214-8358 https://doaj.org/toc/1886-8134 0214-8358 1886-8134 doi:10.3989/scimar.2001.65n4307 https://doaj.org/article/e814e5a24400451eb0db3d0e4dbc069b |
op_doi |
https://doi.org/10.3989/scimar.2001.65n4307 |
container_title |
Scientia Marina |
container_volume |
65 |
container_issue |
4 |
container_start_page |
307 |
op_container_end_page |
312 |
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1766131341254983680 |