Sexual proportion and hermaphroditism of the mollusc, Anadara tuberculosa (Bivalvia: Arcidae) in Panama
Introduction: The bivalve Anadara tuberculosa is an important fishery in the Eastern Tropical Pacific. The sex ratio varies along its geographic range and there are cases of hermaphroditism, occasional in some populations, normal in others. These characteristics may be a response t...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2022 |
| País: | Costa Rica |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Idioma: | español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/50805 |
| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/50805 |
| Access Level: | acceso abierto |
| Palabra clave: | black cockles Gulf of Chiriquí mangroves protandry concha negra Golfo de Chiriquí manglares protandría |
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Sexual proportion and hermaphroditism of the mollusc, Anadara tuberculosa (Bivalvia: Arcidae) in Panama Proporción sexual y hermafroditismo del molusco, Anadara tuberculosa (Bivalvia: Arcidae) en Panamá |
| title |
Sexual proportion and hermaphroditism of the mollusc, Anadara tuberculosa (Bivalvia: Arcidae) in Panama |
| spellingShingle |
Sexual proportion and hermaphroditism of the mollusc, Anadara tuberculosa (Bivalvia: Arcidae) in Panama Robles P., Yolani A. black cockles Gulf of Chiriquí mangroves protandry concha negra Golfo de Chiriquí manglares protandría |
| title_short |
Sexual proportion and hermaphroditism of the mollusc, Anadara tuberculosa (Bivalvia: Arcidae) in Panama |
| title_full |
Sexual proportion and hermaphroditism of the mollusc, Anadara tuberculosa (Bivalvia: Arcidae) in Panama |
| title_fullStr |
Sexual proportion and hermaphroditism of the mollusc, Anadara tuberculosa (Bivalvia: Arcidae) in Panama |
| title_full_unstemmed |
Sexual proportion and hermaphroditism of the mollusc, Anadara tuberculosa (Bivalvia: Arcidae) in Panama |
| title_sort |
Sexual proportion and hermaphroditism of the mollusc, Anadara tuberculosa (Bivalvia: Arcidae) in Panama |
| dc.creator.none.fl_str_mv |
Robles P., Yolani A. Vega, Angel Javier Diaz, Leysi del Carmen |
| author |
Robles P., Yolani A. |
| author_facet |
Robles P., Yolani A. Vega, Angel Javier Diaz, Leysi del Carmen |
| author_role |
author |
| author2 |
Vega, Angel Javier Diaz, Leysi del Carmen |
| author2_role |
author author |
| dc.subject.none.fl_str_mv |
black cockles Gulf of Chiriquí mangroves protandry concha negra Golfo de Chiriquí manglares protandría |
| topic |
black cockles Gulf of Chiriquí mangroves protandry concha negra Golfo de Chiriquí manglares protandría |
| description |
Introduction: The bivalve Anadara tuberculosa is an important fishery in the Eastern Tropical Pacific. The sex ratio varies along its geographic range and there are cases of hermaphroditism, occasional in some populations, normal in others. These characteristics may be a response to anthropogenic and environmental pressure. Objective: To evaluate sex ratio and hermaphroditism of the species in the Panamanian Pacific. Methods: Data on reproductive features of A. tuberculosa generated between 1994 and 2020 for Gulf of Montijo, as well as 2017 data from mangroves of David was analyzed. Macroscopic diagnosis of individual sex is sensitive to the problem of indeterminate individuals, which in turn can skew the sex ratio analysis; therefore, the macroscopic method was compared with histological sections to generate a correction factor to adjust the macroscopically determined sex ratio. Results: For Montijo, histology indicated that the female to male sex ratio ranged from 1:1 to 3.2:1 between 1994 and 2017, while macroscopy indicated 1.9:1 to 5.1:1 between 2004 and 2020. For David, histology indicated a ratio of 3.7:1, and macroscopy 7.9:1. At both localities, larger specimens had more sex ratio variation, independently of the technique, and there was non-casual protandric hermaphroditism in 2017. Conclusion: The occurrence of protandric hermaphroditism and sex ratio changes suggest anthropogenic and environmental pressure in all populations. |
| publishDate |
2022 |
| dc.date.none.fl_str_mv |
2022-01-24 |
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info:eu-repo/semantics/publishedVersion Article artículo original http://purl.org/coar/resource_type/c_2df8fbb1 info:eu-repo/semantics/article |
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article |
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publishedVersion |
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https://revistas.ucr.ac.cr/index.php/rbt/article/view/50805 10.15517/rev.biol.trop..v70i1.50805 |
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https://revistas.ucr.ac.cr/index.php/rbt/article/view/50805 |
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10.15517/rev.biol.trop..v70i1.50805 |
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spa |
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spa |
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https://revistas.ucr.ac.cr/index.php/rbt/article/view/50805/53284 https://revistas.ucr.ac.cr/index.php/rbt/article/view/50805/53285 |
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Derechos de autor 2022 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 acceso abierto http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
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Derechos de autor 2022 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 acceso abierto http://purl.org/coar/access_right/c_abf2 |
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openAccess |
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application/pdf text/html |
| dc.publisher.none.fl_str_mv |
Universidad de Costa Rica |
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Universidad de Costa Rica |
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Revista de Biología Tropical; Vol. 70 No. 1 (2022): Revista de Biología Tropical (Rev. Biol. Trop.): Continuous publication, 01 January - 31 December 2022; 713–725 Revista de Biología Tropical; Vol. 70 Núm. 1 (2022): Revista de Biología Tropical (Rev. Biol. Trop.): Publicación continua, Enero - Diciembre 2022; 713–725 Revista Biología Tropical; Vol. 70 N.º 1 (2022): Revista de Biología Tropical (Rev. Biol. Trop.): Publicación continua, Enero - Diciembre 2022; 713–725 2215-2075 0034-7744 10.15517/rev.biol.trop..v70i1.2022 reponame:Portal de Revistas UCR instname:Universidad de Costa Rica instacron:UCR |
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Universidad de Costa Rica |
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UCR |
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UCR |
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Portal de Revistas UCR |
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Portal de Revistas UCR |
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Portal de Revistas UCR - Universidad de Costa Rica |
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jorge.polanco@ucr.ac.cr |
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1849325391140880384 |
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Sexual proportion and hermaphroditism of the mollusc, Anadara tuberculosa (Bivalvia: Arcidae) in PanamaProporción sexual y hermafroditismo del molusco, Anadara tuberculosa (Bivalvia: Arcidae) en PanamáRobles P., Yolani A.Vega, Angel JavierDiaz, Leysi del Carmenblack cocklesGulf of Chiriquímangrovesprotandryconcha negraGolfo de ChiriquímanglaresprotandríaIntroduction: The bivalve Anadara tuberculosa is an important fishery in the Eastern Tropical Pacific. The sex ratio varies along its geographic range and there are cases of hermaphroditism, occasional in some populations, normal in others. These characteristics may be a response to anthropogenic and environmental pressure. Objective: To evaluate sex ratio and hermaphroditism of the species in the Panamanian Pacific. Methods: Data on reproductive features of A. tuberculosa generated between 1994 and 2020 for Gulf of Montijo, as well as 2017 data from mangroves of David was analyzed. Macroscopic diagnosis of individual sex is sensitive to the problem of indeterminate individuals, which in turn can skew the sex ratio analysis; therefore, the macroscopic method was compared with histological sections to generate a correction factor to adjust the macroscopically determined sex ratio. Results: For Montijo, histology indicated that the female to male sex ratio ranged from 1:1 to 3.2:1 between 1994 and 2017, while macroscopy indicated 1.9:1 to 5.1:1 between 2004 and 2020. For David, histology indicated a ratio of 3.7:1, and macroscopy 7.9:1. At both localities, larger specimens had more sex ratio variation, independently of the technique, and there was non-casual protandric hermaphroditism in 2017. Conclusion: The occurrence of protandric hermaphroditism and sex ratio changes suggest anthropogenic and environmental pressure in all populations.Introducción: El bivalvo Anadara tuberculosa es un recurso pesquero y económico importante en el Pacífico Este Tropical. La proporción sexual varia a lo largo de su área de distribución, con casos de aparición de hermafroditismo, ocasional para algunas poblaciones, normal en otras. Estas características podrían ser una respuesta a presiones antropogénicas y ambientales. Objetivo: Evaluar la proporción sexual y el hermafroditismo en la especie en el Pacífico de Panamá. Métodos: Se analizó información reproductiva de A. tuberculosa generada entre 1994 y 2020 para el Golfo de Montijo, así como datos de 2017 para el manglar de David. Se aplicaron procedimientos macroscópicos, contrastados con histológicos y se generó un factor de corrección para ajustar la proporción sexual macroscópica, debido al efecto, sobre la proporción sexual, que ocasiona los organismos indeterminados. Resultados: Para el Golfo de Montijo, la histología indicó una proporción sexual hembra a macho de 1:1 hasta 3.2:1, entre 1994 y 2017, mientras que la macroscopía varió de 1.9:1 a 5.1:1 entre 2004 y 2020. Para el manglar de David, la histología indicó una proporción sexual de 3.7:1, y de 7.9:1 por macroscopía en el 2017. En ambas localidades, especímenes más grandes mostraron mayor variación en la proporción sexual, pese a la técnica implementada, así como hermafroditismo protándrico no casual en el 2017. Conclusiones: La aparición del hermafroditismo protándrico y los cambios en la proporción sexual indican que la población de A. tuberculosa, en ambas localidades, está respondiendo a presiones antropogénicas y ambientales.Universidad de Costa Rica2022-01-24info:eu-repo/semantics/publishedVersionArticleartículo originalhttp://purl.org/coar/resource_type/c_2df8fbb1info:eu-repo/semantics/articleapplication/pdftext/htmlhttps://revistas.ucr.ac.cr/index.php/rbt/article/view/5080510.15517/rev.biol.trop..v70i1.50805Revista de Biología Tropical; Vol. 70 No. 1 (2022): Revista de Biología Tropical (Rev. Biol. Trop.): Continuous publication, 01 January - 31 December 2022; 713–725Revista de Biología Tropical; Vol. 70 Núm. 1 (2022): Revista de Biología Tropical (Rev. Biol. Trop.): Publicación continua, Enero - Diciembre 2022; 713–725Revista Biología Tropical; Vol. 70 N.º 1 (2022): Revista de Biología Tropical (Rev. Biol. Trop.): Publicación continua, Enero - Diciembre 2022; 713–7252215-20750034-774410.15517/rev.biol.trop..v70i1.2022reponame:Portal de Revistas UCRinstname:Universidad de Costa Ricainstacron:UCRspahttps://revistas.ucr.ac.cr/index.php/rbt/article/view/50805/53284https://revistas.ucr.ac.cr/index.php/rbt/article/view/50805/53285Derechos de autor 2022 Revista de Biología Tropicalhttp://creativecommons.org/licenses/by/4.0acceso abiertohttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccess2022-10-14T03:47:10Zoai:portal.ucr.ac.cr:article/50805Portal de revistashttps://revistas.ucr.ac.cr/Universidadhttp://www.ucr.ac.crhttps://revistas.ucr.ac.cr/index.php/index/oaijorge.polanco@ucr.ac.crCosta RicaNo aplicaNo aplicaNo aplicaopendoar:2025-08-13T10:25:57.902Portal de Revistas UCR - Universidad de Costa Ricafalse |
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