Algunos aspectos de la reproducción en Anadara tuberculosa (Pelecypoda: Arcidae) de Punta Morales, Puntarenas, Costa Rica
保存先:
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| フォーマット: | artículo original |
| 状態: | Versión publicada |
| 出版日付: | 1984 |
| その他の書誌記述: | The reproductive cycle of 1094 specimens of the mangrove cockle, Anadara tuberculosa, was studied by a smear method and macroscopic observation of the gonads at Punta Morales, Costa Rica from May 1980 to April 1981. The percentage of males and females was approximately 1 : 1, the mean of individuals of undtermined sex was 13.84% raging from 42% in June of 1980 to 0 in December 1980. Ripening and fully ripe individuals were observed throughout the year. There was no evidence of sexual reversal in any specimen. The period of greatest _ spawning activity was from May to September, the percentage of spent individuals ranged from 70 to 50%, respectively. Active gametogenesis was observed with a decrease in the water temperature and salinity. The spawning peak coincided with high salinity and water temperature. |
| 国: | Portal de Revistas UCR |
| 機関: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| 言語: | Español |
| OAI Identifier: | oai:archivo.portal.ucr.ac.cr:article/24772 |
| オンライン･アクセス: | https://archivo.revistas.ucr.ac.cr/index.php/rbt/article/view/24772 |