Population biology of the sea star Anasterias minuta (Forcipulatida: Asteriidae) threatened by anthropogenic activities in rocky intertidal shores of San Matías Gulf, Patagonia, Argentina
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| Formato: | Online |
| Idioma: | eng |
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Universidad de Costa Rica
2017
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| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/31668 |
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RBT31668 |
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RBT316682022-06-09T18:10:56Z Population biology of the sea star Anasterias minuta (Forcipulatida: Asteriidae) threatened by anthropogenic activities in rocky intertidal shores of San Matías Gulf, Patagonia, Argentina Arribas, Lorena P. Bagur, María Palomo, M. Gabriela Bigatti, Gregorio Asteriidae physical stress rocky intertidal Patagonia predation anthropogenic impact. In Patagonian coastal areas, intertidal benthic communities are exposed to extreme physical conditions. The interaction between harsh environment and anthropogenic pressure can generate changes in population biology of marine invertebrates, like density and reproduction. The oral brooding sea star Anasterias minuta is a key organism in food chains of Atlantic Patagonian rocky intertidals, hence changes on its population structure can negatively affect shore communities. We studied the population biology of A. minuta and assess the effect of environmental parameters and anthropogenic activities on its population on rocky intertidal shores of San Matías Gulf, Patagonia, Argentina. Seasonal sea surface temperature, pH, salinity, water velocity, desiccation rate, boulders density, and anthropogenic influence (tourists and octopus fishermen) were recorded. In sites with less tourist influence and high refuge, an increase in density was recorded, especially during the summer. Brooding individuals were found in fall and winter, while feeding individuals were observed in all seasons (12 different prey, mainly the molluscs Tegula patagonica and Perumytilus purpuratus). Environmental variables such as boulders density and water velocity were the most important predictor of variation in population structure. Tourism and pH were the most important variables negatively correlated with density. Rev. Biol. Trop. 65(Suppl. 1): S73-S84. Epub 2017 November 01. Universidad de Costa Rica 2017-11-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article application/pdf text/html https://revistas.ucr.ac.cr/index.php/rbt/article/view/31668 10.15517/rbt.v65i1-1.31668 Revista de Biología Tropical; Vol. 65 No. S1 (2017): Volume 65 – Supplement 1 – November 2017: Research on Echinoderms in Latin America IV; S73–S84 Revista de Biología Tropical; Vol. 65 Núm. S1 (2017): Volumen 65 – Suplemento 1 – Noviembre 2017: Estudios Latinoamericanos en Equinodermos IV; S73–S84 Revista Biología Tropical; Vol. 65 N.º S1 (2017): Volume 65 – Supplement 1 – November 2017: Research on Echinoderms in Latin America IV; S73–S84 2215-2075 0034-7744 10.15517/rbt.v65i1-1 eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/31668/31313 https://revistas.ucr.ac.cr/index.php/rbt/article/view/31668/31355 Copyright (c) 2017 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 |
| institution |
Universidad de Costa Rica |
| collection |
Revista de Biología Tropical |
| language |
eng |
| format |
Online |
| author |
Arribas, Lorena P. Bagur, María Palomo, M. Gabriela Bigatti, Gregorio |
| spellingShingle |
Arribas, Lorena P. Bagur, María Palomo, M. Gabriela Bigatti, Gregorio Population biology of the sea star Anasterias minuta (Forcipulatida: Asteriidae) threatened by anthropogenic activities in rocky intertidal shores of San Matías Gulf, Patagonia, Argentina |
| author_facet |
Arribas, Lorena P. Bagur, María Palomo, M. Gabriela Bigatti, Gregorio |
| author_sort |
Arribas, Lorena P. |
| title |
Population biology of the sea star Anasterias minuta (Forcipulatida: Asteriidae) threatened by anthropogenic activities in rocky intertidal shores of San Matías Gulf, Patagonia, Argentina |
| title_short |
Population biology of the sea star Anasterias minuta (Forcipulatida: Asteriidae) threatened by anthropogenic activities in rocky intertidal shores of San Matías Gulf, Patagonia, Argentina |
| title_full |
Population biology of the sea star Anasterias minuta (Forcipulatida: Asteriidae) threatened by anthropogenic activities in rocky intertidal shores of San Matías Gulf, Patagonia, Argentina |
| title_fullStr |
Population biology of the sea star Anasterias minuta (Forcipulatida: Asteriidae) threatened by anthropogenic activities in rocky intertidal shores of San Matías Gulf, Patagonia, Argentina |
| title_full_unstemmed |
Population biology of the sea star Anasterias minuta (Forcipulatida: Asteriidae) threatened by anthropogenic activities in rocky intertidal shores of San Matías Gulf, Patagonia, Argentina |
| title_sort |
population biology of the sea star anasterias minuta (forcipulatida: asteriidae) threatened by anthropogenic activities in rocky intertidal shores of san matías gulf, patagonia, argentina |
| publisher |
Universidad de Costa Rica |
| publishDate |
2017 |
| url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/31668 |
| work_keys_str_mv |
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