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

dc.creator	Avendaño, Miguel
dc.creator	Cantillánez, Marcela
dc.creator	Le Pennec, Marcel
dc.creator	Thouzeau, Gérard
dc.date	2006-06-27
dc.date.accessioned	2016-05-03T15:29:35Z
dc.date.available	2016-05-03T15:29:35Z
dc.identifier	http://revistas.ucr.ac.cr/index.php/rbt/article/view/5512
dc.identifier	10.15517/rbt.v56i1.5512
dc.identifier.uri	https://hdl.handle.net/10669/26708
dc.description	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).	en-US
dc.format	application/pdf
dc.language	eng
dc.publisher	Universidad de Costa Rica	en-US
dc.rights	Copyright (c) 2014 International Journal of Tropical Biology and Conservation	en-US
dc.source	Revista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 56 (1) March 2008	en-US
dc.source	Revista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 56 (1) March 2008	es-ES
dc.source	Revista Biología Tropical; Vol. 56 (1) March 2008	pt-PT
dc.source	2215-2075
dc.source	0034-7744
dc.source	10.15517/rbt.v56i1
dc.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	en-US
dc.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	es-ES
dc.type	artículo original
dc.coverage	CRC	en-US

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