Seasonal variation in reproductive activity and biochemical composition of flat oyster (Ostrea edulis) in the Homa Lagoon, Izmir Bay, Turkey
The reproductive cycle of the flat oyster, Ostrea edulis Linnaeus, 1758, in Homa Lagoon, Izmir Bay, Turkey was examined from August 2008 to July 2009. Gonad samples were analysed histologically in order to determine the sex ratio and gonad development stage. Overall, the sex ratio was recorded as 2....
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| Format: | Article |
| Language: | English |
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Consejo Superior de Investigaciones Científicas
2015-12-01
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| Series: | Scientia Marina |
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| Online Access: | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1601 |
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| author | Sefa Acarli Aynur Lök Ali Kirtik Deniz Acarli Serpil Serdar Aysun Kucukdermenci Selcuk Yigitkurt Harun Yildiz Asiye Nur Saltan |
| author_facet | Sefa Acarli Aynur Lök Ali Kirtik Deniz Acarli Serpil Serdar Aysun Kucukdermenci Selcuk Yigitkurt Harun Yildiz Asiye Nur Saltan |
| author_sort | Sefa Acarli |
| collection | DOAJ |
| description | The reproductive cycle of the flat oyster, Ostrea edulis Linnaeus, 1758, in Homa Lagoon, Izmir Bay, Turkey was examined from August 2008 to July 2009. Gonad samples were analysed histologically in order to determine the sex ratio and gonad development stage. Overall, the sex ratio was recorded as 2.2% female, 42.6% male, 37% hermaphrodite and 17.9% inactive. Glycogen content showed considerable variations between August and February, but decreased gradually thereafter. However, glycogen did not directly affect the reproductive cycle. Total lipid content was positively correlated with temperature and inversely correlated with salinity. In addition, this parameter was influenced by the reproductive activity, which is correlated with the fluctuation of the condition index and gonad index (P < 0.05). However, the relationship between the protein index and the gonad index was negative (P < 0.05). The results of this study showed that protein was the major energy resource. The condition index varied between 2.69±0.91 (February) and 12.29±1.45 (April) during the year. With respect to meat yield, oyster quality changed from “fine” to “special”, except in December and February. |
| first_indexed | 2024-12-17T19:39:30Z |
| format | Article |
| id | doaj.art-6316c29303a7441b84e9652f0da80e09 |
| institution | Directory Open Access Journal |
| issn | 0214-8358 1886-8134 |
| language | English |
| last_indexed | 2024-12-17T19:39:30Z |
| publishDate | 2015-12-01 |
| publisher | Consejo Superior de Investigaciones Científicas |
| record_format | Article |
| series | Scientia Marina |
| spelling | doaj.art-6316c29303a7441b84e9652f0da80e092022-12-21T21:35:04ZengConsejo Superior de Investigaciones CientíficasScientia Marina0214-83581886-81342015-12-0179448749510.3989/scimar.04202.16A1572Seasonal variation in reproductive activity and biochemical composition of flat oyster (Ostrea edulis) in the Homa Lagoon, Izmir Bay, TurkeySefa Acarli0Aynur Lök1Ali Kirtik2Deniz Acarli3Serpil Serdar4Aysun Kucukdermenci5Selcuk Yigitkurt6Harun Yildiz7Asiye Nur Saltan8Canakkale Onsekiz Mart University, Faculty of Marine Sciences and TechnologyEge University, Fisheries Faculty, Department of AquacultureEge University, Fisheries Faculty, Department of AquacultureCanakkale Onsekiz Mart University, Gökceada School of Applied Sciences, Department of Fisheries TechnologyEge University, Fisheries Faculty, Department of AquacultureEge University, Fisheries Faculty, Department of AquacultureEge University, Fisheries Faculty, Department of AquacultureCanakkale Onsekiz Mart University, Faculty of Marine Sciences and TechnologyCanakkale Onsekiz Mart University, Faculty of Marine Sciences and TechnologyThe reproductive cycle of the flat oyster, Ostrea edulis Linnaeus, 1758, in Homa Lagoon, Izmir Bay, Turkey was examined from August 2008 to July 2009. Gonad samples were analysed histologically in order to determine the sex ratio and gonad development stage. Overall, the sex ratio was recorded as 2.2% female, 42.6% male, 37% hermaphrodite and 17.9% inactive. Glycogen content showed considerable variations between August and February, but decreased gradually thereafter. However, glycogen did not directly affect the reproductive cycle. Total lipid content was positively correlated with temperature and inversely correlated with salinity. In addition, this parameter was influenced by the reproductive activity, which is correlated with the fluctuation of the condition index and gonad index (P < 0.05). However, the relationship between the protein index and the gonad index was negative (P < 0.05). The results of this study showed that protein was the major energy resource. The condition index varied between 2.69±0.91 (February) and 12.29±1.45 (April) during the year. With respect to meat yield, oyster quality changed from “fine” to “special”, except in December and February.http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1601flat oysterostrea edulisreproductive cyclebiochemical compositionaegean seahoma lagoon |
| spellingShingle | Sefa Acarli Aynur Lök Ali Kirtik Deniz Acarli Serpil Serdar Aysun Kucukdermenci Selcuk Yigitkurt Harun Yildiz Asiye Nur Saltan Seasonal variation in reproductive activity and biochemical composition of flat oyster (Ostrea edulis) in the Homa Lagoon, Izmir Bay, Turkey Scientia Marina flat oyster ostrea edulis reproductive cycle biochemical composition aegean sea homa lagoon |
| title | Seasonal variation in reproductive activity and biochemical composition of flat oyster (Ostrea edulis) in the Homa Lagoon, Izmir Bay, Turkey |
| title_full | Seasonal variation in reproductive activity and biochemical composition of flat oyster (Ostrea edulis) in the Homa Lagoon, Izmir Bay, Turkey |
| title_fullStr | Seasonal variation in reproductive activity and biochemical composition of flat oyster (Ostrea edulis) in the Homa Lagoon, Izmir Bay, Turkey |
| title_full_unstemmed | Seasonal variation in reproductive activity and biochemical composition of flat oyster (Ostrea edulis) in the Homa Lagoon, Izmir Bay, Turkey |
| title_short | Seasonal variation in reproductive activity and biochemical composition of flat oyster (Ostrea edulis) in the Homa Lagoon, Izmir Bay, Turkey |
| title_sort | seasonal variation in reproductive activity and biochemical composition of flat oyster ostrea edulis in the homa lagoon izmir bay turkey |
| topic | flat oyster ostrea edulis reproductive cycle biochemical composition aegean sea homa lagoon |
| url | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1601 |
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