Evidencia de diferenciación sexual en la almeja Ameghinomya antiqua de la costa chilena y su proporción de sexos

Abstract. Ameghinomya antiqua is one of the most exploited bivalves in Chile, however, the limited information available on its reproductive biology does not allow proper fishery management decisions to be made. The presence of sexual dimorphism and the sex ratios for this species were detected by o...

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Autores principales:	Prida,Valentina, Valenzuela,Andrea, Astorga,Marcela P.
Lenguaje:	Spanish / Castilian
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2018
Materias:	Ameghinomya antiqua bivalve gonads sexual dimorphism
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572018000300381
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spelling	oai:scielo:S0718-195720180003003812019-02-27Evidencia de diferenciación sexual en la almeja Ameghinomya antiqua de la costa chilena y su proporción de sexosPrida,ValentinaValenzuela,AndreaAstorga,Marcela P. Ameghinomya antiqua bivalve gonads sexual dimorphism Abstract. Ameghinomya antiqua is one of the most exploited bivalves in Chile, however, the limited information available on its reproductive biology does not allow proper fishery management decisions to be made. The presence of sexual dimorphism and the sex ratios for this species were detected by observation of gonads extracted from specimens collected from Carelmapu and Quellón, southern Chile. One group of specimens showed milky-white gonads with oocytes (females) while the other exhibited orange gonads with spermatocytes (males). The sex ratio obtained in Carelmapu was 1:1.1, with 48.5% males and 51.5% females; in Quellón, the sex ratio was 1:1.01, with 49.77% males and 50.23% females. We found that dimorphism can be assessed by rapid visual observation of the gonads. Our study proposes an easier and faster way of identifying gender in Ameghinomya antiqua, allowing proper monitoring.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.53 n.3 20182018-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572018000300381es10.22370/rbmo.2018.53.3.1361
institution	Scielo Chile
collection	Scielo Chile
language	Spanish / Castilian
topic	Ameghinomya antiqua bivalve gonads sexual dimorphism
spellingShingle	Ameghinomya antiqua bivalve gonads sexual dimorphism Prida,Valentina Valenzuela,Andrea Astorga,Marcela P. Evidencia de diferenciación sexual en la almeja Ameghinomya antiqua de la costa chilena y su proporción de sexos
description	Abstract. Ameghinomya antiqua is one of the most exploited bivalves in Chile, however, the limited information available on its reproductive biology does not allow proper fishery management decisions to be made. The presence of sexual dimorphism and the sex ratios for this species were detected by observation of gonads extracted from specimens collected from Carelmapu and Quellón, southern Chile. One group of specimens showed milky-white gonads with oocytes (females) while the other exhibited orange gonads with spermatocytes (males). The sex ratio obtained in Carelmapu was 1:1.1, with 48.5% males and 51.5% females; in Quellón, the sex ratio was 1:1.01, with 49.77% males and 50.23% females. We found that dimorphism can be assessed by rapid visual observation of the gonads. Our study proposes an easier and faster way of identifying gender in Ameghinomya antiqua, allowing proper monitoring.
author	Prida,Valentina Valenzuela,Andrea Astorga,Marcela P.
author_facet	Prida,Valentina Valenzuela,Andrea Astorga,Marcela P.
author_sort	Prida,Valentina
title	Evidencia de diferenciación sexual en la almeja Ameghinomya antiqua de la costa chilena y su proporción de sexos
title_short	Evidencia de diferenciación sexual en la almeja Ameghinomya antiqua de la costa chilena y su proporción de sexos
title_full	Evidencia de diferenciación sexual en la almeja Ameghinomya antiqua de la costa chilena y su proporción de sexos
title_fullStr	Evidencia de diferenciación sexual en la almeja Ameghinomya antiqua de la costa chilena y su proporción de sexos
title_full_unstemmed	Evidencia de diferenciación sexual en la almeja Ameghinomya antiqua de la costa chilena y su proporción de sexos
title_sort	evidencia de diferenciación sexual en la almeja ameghinomya antiqua de la costa chilena y su proporción de sexos
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572018000300381
work_keys_str_mv	AT pridavalentina evidenciadediferenciacionsexualenlaalmejaameghinomyaantiquadelacostachilenaysuproporciondesexos AT valenzuelaandrea evidenciadediferenciacionsexualenlaalmejaameghinomyaantiquadelacostachilenaysuproporciondesexos AT astorgamarcelap evidenciadediferenciacionsexualenlaalmejaameghinomyaantiquadelacostachilenaysuproporciondesexos
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Evidencia de diferenciación sexual en la almeja Ameghinomya antiqua de la costa chilena y su proporción de sexos

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