Reproductive cycle of the Patagonian scallop Zygochlamys patagonica in the south-western Atlantic

dc.creatorCampodónico, Silvana
dc.creatorMacchi, Gustavo Javier
dc.creatorLomovasky, Betina Judith
dc.creatorLasta, Mario
dc.date2008-05
dc.identifierhttp://hdl.handle.net/11336/113085
dc.identifierCampodónico, Silvana; Macchi, Gustavo Javier; Lomovasky, Betina Judith; Lasta, Mario; Reproductive cycle of the Patagonian scallop Zygochlamys patagonica in the south-western Atlantic; Cambridge University Press; Journal of the Marine Biological Association of the United Kingdom; 88; 3; 5-2008; 603-611
dc.identifier0025-3154
dc.identifierCONICET Digital
dc.identifierCONICET
dc.descriptionThe reproductive cycle of Zygochlamys patagonica was studied from October 1999 to February 2001 in a bed located in the south-western Atlantic (Reclutas bed 39°24′ S-55°56′W). Scallops were collected monthly and the sexual maturity stages were determined histologically (N = 508). Sex-ratio was 1:1 (t-test P > 0.05). The size of first sexual maturity was estimated from males of an average of 36.63 mm and females of 36.31 mm of shell height. The relative gonadal condition index (RGCI) showed an annual cycle, with higher values during winter-spring and lower values during summer-autumn; an inverse relationship for the relative muscle condition index (RMCI) was observed with maximum values in early summer. Thus, a reallocation of energy from soma to gonad appears to be inevitable to meet energy demand of gonad development. Seven histological stages of sexual maturity were established for both sexes: (1) immature; (2) early maturity; (3) advanced maturity,;(4) ripe; (5) spawning; (6) spent; and (7) recovery. Individuals in early and advanced maturity were found throughout the year; however, they were found more frequently between June and September. Spawning began in October (early spring) and extended through March (late summer-early autumn) coexisting with early and advanced maturity stages supported by the annual variation of the RGCI and the food availability into the system.
dc.descriptionFil: Campodónico, Silvana. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina
dc.descriptionFil: Macchi, Gustavo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina
dc.descriptionFil: Lomovasky, Betina Judith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
dc.descriptionFil: Lasta, Mario. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina
dc.formatapplication/pdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherCambridge University Press
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom/article/reproductive-cycle-of-the-patagonian-scallop-zygochlamys-patagonica-in-the-southwestern-atlantic/A9DEB0D34D0F0B637B803DC628C02A6C
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/10.1017/S0025315408001033
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subjectGAMETOGENESIS
dc.subjectREPRODUCTIVE CYCLE
dc.subjectSCALLOPS
dc.subjectSIZE OF FIRST MATURITY
dc.subjectZYGOCHLAMYS PATAGONICA
dc.subjecthttps://purl.org/becyt/ford/1.6
dc.subjecthttps://purl.org/becyt/ford/1
dc.titleReproductive cycle of the Patagonian scallop Zygochlamys patagonica in the south-western Atlantic
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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