Population estimates, extraction, and translocation of the pectinid Argopecten purpuratus within Mejillones Bay, Chile
The population of the scallop Argopecten purpuratus in Mejillones Bay, Chile (23°S) was estimated using diving-quadrat techniques between July and August 1999. The population, distributed over an area of 255 ha, was estimated at about 18 * 106 individuals, having a mean length of about 68 mm. Of thi...
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| Format: | Article |
| Language: | English |
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Consejo Superior de Investigaciones Científicas
2003-09-01
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| Series: | Scientia Marina |
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| Online Access: | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/477 |
| _version_ | 1818450761418276864 |
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| author | Miguel Avendaño D Marcela Cantillánez S. |
| author_facet | Miguel Avendaño D Marcela Cantillánez S. |
| author_sort | Miguel Avendaño D |
| collection | DOAJ |
| description | The population of the scallop Argopecten purpuratus in Mejillones Bay, Chile (23°S) was estimated using diving-quadrat techniques between July and August 1999. The population, distributed over an area of 255 ha, was estimated at about 18 * 106 individuals, having a mean length of about 68 mm. Of this number, about 16 * 106 individuals were aggregated into a core area of 51 ha. A subsequent controlled harvest carried out in 33.5 ha of this area in November 2000 produced only 2 * 105 individuals, strongly suggesting that large scale clandestine (illegal) harvesting had occurred since the original population survey. Reseeding of collected scallops was carried out in an interior area of the bay which had low densities of scallops but highly similar physical and chemical seawater characteristics. Post-seeding mortality of the translocated scallops, determined two weeks after the transfer, was 12.5%, with a mean of 2.5 indiv./m2 in an 8.2 ha area. The low initial mortality, compared with values in the literature, suggested that the methods of retrieval, transport, and restocking the scallops could serve as a viable repopulation strategy in other areas in the future. |
| first_indexed | 2024-12-14T20:56:26Z |
| format | Article |
| id | doaj.art-8e994edb901749baae2a3d93e49d4e91 |
| institution | Directory Open Access Journal |
| issn | 0214-8358 1886-8134 |
| language | English |
| last_indexed | 2024-12-14T20:56:26Z |
| publishDate | 2003-09-01 |
| publisher | Consejo Superior de Investigaciones Científicas |
| record_format | Article |
| series | Scientia Marina |
| spelling | doaj.art-8e994edb901749baae2a3d93e49d4e912022-12-21T22:47:40ZengConsejo Superior de Investigaciones CientíficasScientia Marina0214-83581886-81342003-09-0167328529110.3989/scimar.2003.67n3285472Population estimates, extraction, and translocation of the pectinid Argopecten purpuratus within Mejillones Bay, ChileMiguel Avendaño D0Marcela Cantillánez S.1Universidad de Antofagasta, Departamento de AcuiculturaUniversidad de Antofagasta, Departamento de AcuiculturaThe population of the scallop Argopecten purpuratus in Mejillones Bay, Chile (23°S) was estimated using diving-quadrat techniques between July and August 1999. The population, distributed over an area of 255 ha, was estimated at about 18 * 106 individuals, having a mean length of about 68 mm. Of this number, about 16 * 106 individuals were aggregated into a core area of 51 ha. A subsequent controlled harvest carried out in 33.5 ha of this area in November 2000 produced only 2 * 105 individuals, strongly suggesting that large scale clandestine (illegal) harvesting had occurred since the original population survey. Reseeding of collected scallops was carried out in an interior area of the bay which had low densities of scallops but highly similar physical and chemical seawater characteristics. Post-seeding mortality of the translocated scallops, determined two weeks after the transfer, was 12.5%, with a mean of 2.5 indiv./m2 in an 8.2 ha area. The low initial mortality, compared with values in the literature, suggested that the methods of retrieval, transport, and restocking the scallops could serve as a viable repopulation strategy in other areas in the future.http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/477scallopargopecten purpuratusstock evaluationtranslocationchile |
| spellingShingle | Miguel Avendaño D Marcela Cantillánez S. Population estimates, extraction, and translocation of the pectinid Argopecten purpuratus within Mejillones Bay, Chile Scientia Marina scallop argopecten purpuratus stock evaluation translocation chile |
| title | Population estimates, extraction, and translocation of the pectinid Argopecten purpuratus within Mejillones Bay, Chile |
| title_full | Population estimates, extraction, and translocation of the pectinid Argopecten purpuratus within Mejillones Bay, Chile |
| title_fullStr | Population estimates, extraction, and translocation of the pectinid Argopecten purpuratus within Mejillones Bay, Chile |
| title_full_unstemmed | Population estimates, extraction, and translocation of the pectinid Argopecten purpuratus within Mejillones Bay, Chile |
| title_short | Population estimates, extraction, and translocation of the pectinid Argopecten purpuratus within Mejillones Bay, Chile |
| title_sort | population estimates extraction and translocation of the pectinid argopecten purpuratus within mejillones bay chile |
| topic | scallop argopecten purpuratus stock evaluation translocation chile |
| url | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/477 |
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