Reproductive and larval cycle of the scallop Argopecten purpuratus (Ostreoida: Pectinidae), during El Niño-La Niña events and normal weather conditions in Antofagasta, Chile
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Universidad de Costa Rica
2008
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| Online Access: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/5512 |
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RBT55122022-07-06T15:58:26Z Reproductive and larval cycle of the scallop Argopecten purpuratus (Ostreoida: Pectinidae), during El Niño-La Niña events and normal weather conditions in Antofagasta, Chile Reproductive and larval cycle of the scallop Argopecten purpuratus (Ostreoida: Pectinidae), during El Niño-La Niña events and normal weather conditions in Antofagasta, Chile Avendaño, Miguel Cantillánez, Marcela Le Pennec, Marcel Thouzeau, Gérard Argopecten purpuratus ciclo reproductivo ciclo larval bahía de Antofagasta Chile reproductive cycle larval cycle Antofagasta bay Seasonality, amplitude, and magnitude of spawning events were determined for Argopecten purpuratus in the La Rinconada marine reserve, Antofagasta, Chile, between December 1995 and January 2004. During the same period, samples of scallop larvae were obtained in vertical plankton hauls recovered within this reserve in an area routinely exposed to circular, gyre-like currents which helped retain the larvae within the bay. The reproduction of this population in normal or cool (e.g. "La Niña", 1998-2000) years occurred throughout the year, with a more active period between September and April, declining in June and August; this contrasted with the warmer "El Niño" oceanographic period of 1997-98 in which reproductive activity was more intense and prolonged throughout the entire year. The reproductive events in this population were mostly synchronous, although one asynchronous period occurred each year following the more intense March to May spawnings. This reproductive activity generated a continuous presence of larvae in the area in which no strict relation could be found between the intensities of spawning and numbers of larvae in the water. Larval presence was, however, generally correlated with active spawning periods. Important increases in larval numbers recorded at the end of 1999 and the beginning of 2003 were correlated with census data showing a higher percentage presence of broodstock over 90 mm in shell length during these years. An adequate stock of this size class is needed for a successful seed capture program in the reserve (for mass culture). Universidad de Costa Rica 2008-03-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article Text application/pdf https://revistas.ucr.ac.cr/index.php/rbt/article/view/5512 10.15517/rbt.v56i1.5512 Revista de Biología Tropical; Vol. 56 No. 1 (2008): Volume 56 – Regular number 1 – March 2008; 121–132 Revista de Biología Tropical; Vol. 56 Núm. 1 (2008): Volumen 56 – Número regular 1 – Marzo 2008; 121–132 Revista Biología Tropical; Vol. 56 N.º 1 (2008): Volume 56 – Regular number 1 – March 2008; 121–132 2215-2075 0034-7744 10.15517/rbt.v56i1 eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/5512/5258 Copyright (c) 2008 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 |
Avendaño, Miguel Cantillánez, Marcela Le Pennec, Marcel Thouzeau, Gérard |
| spellingShingle |
Avendaño, Miguel Cantillánez, Marcela Le Pennec, Marcel Thouzeau, Gérard Reproductive and larval cycle of the scallop Argopecten purpuratus (Ostreoida: Pectinidae), during El Niño-La Niña events and normal weather conditions in Antofagasta, Chile |
| author_facet |
Avendaño, Miguel Cantillánez, Marcela Le Pennec, Marcel Thouzeau, Gérard |
| author_sort |
Avendaño, Miguel |
| title |
Reproductive and larval cycle of the scallop Argopecten purpuratus (Ostreoida: Pectinidae), during El Niño-La Niña events and normal weather conditions in Antofagasta, Chile |
| title_short |
Reproductive and larval cycle of the scallop Argopecten purpuratus (Ostreoida: Pectinidae), during El Niño-La Niña events and normal weather conditions in Antofagasta, Chile |
| title_full |
Reproductive and larval cycle of the scallop Argopecten purpuratus (Ostreoida: Pectinidae), during El Niño-La Niña events and normal weather conditions in Antofagasta, Chile |
| title_fullStr |
Reproductive and larval cycle of the scallop Argopecten purpuratus (Ostreoida: Pectinidae), during El Niño-La Niña events and normal weather conditions in Antofagasta, Chile |
| title_full_unstemmed |
Reproductive and larval cycle of the scallop Argopecten purpuratus (Ostreoida: Pectinidae), during El Niño-La Niña events and normal weather conditions in Antofagasta, Chile |
| title_sort |
reproductive and larval cycle of the scallop argopecten purpuratus (ostreoida: pectinidae), during el niño-la niña events and normal weather conditions in antofagasta, chile |
| title_alt |
Reproductive and larval cycle of the scallop Argopecten purpuratus (Ostreoida: Pectinidae), during El Niño-La Niña events and normal weather conditions in Antofagasta, Chile |
| publisher |
Universidad de Costa Rica |
| publishDate |
2008 |
| url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/5512 |
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