Gametogenic Cycle of the Oysters <i>Pinctada capensis</i> (Sowerby III, 1890) and <i>Saccostrea cucullata</i> (Born, 1778) (Class Bivalvia) in Inhaca Island, Southern Mozambique: A Subsidy for Bivalve Culture in the Region
This study describes reproductive aspects of the <i>Pinctada capensis</i> (pearl oyster) and <i>Saccostrea cucullata</i> (rocky shore oyster) in Inhaca Island, southern Mozambique (Western Indian Ocean). Adult oysters were collected monthly over two years within seagrass bank...
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MDPI AG
2023-03-01
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| author | Mizeque Mafambissa Mery Rodrigues Torres Taimo Carlos Andrade Mats Lindegart Adriano Macia |
| author_facet | Mizeque Mafambissa Mery Rodrigues Torres Taimo Carlos Andrade Mats Lindegart Adriano Macia |
| author_sort | Mizeque Mafambissa |
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| description | This study describes reproductive aspects of the <i>Pinctada capensis</i> (pearl oyster) and <i>Saccostrea cucullata</i> (rocky shore oyster) in Inhaca Island, southern Mozambique (Western Indian Ocean). Adult oysters were collected monthly over two years within seagrass banks for <i>P. capensis</i> and rocky shore habitats for <i>S. cucullata</i>. The animals were evaluated using biometric and histological analyses of the gonads. Of the total population, females were predominant among larger individuals (>55 mm) and males were more dominant among smaller individuals (<55 mm) for both species. The sex ratio was (1 M–1.5 F) for <i>Pinctada capensis</i> and (1 M–1.6 F) for <i>Saccostrea cucullata</i>. Five gonad maturation stages were identified: indifferent, developing I, developing II, ripe and spent. The size at first maturity was mm and 26.2 mm for pearl oysters females and males, respectively, whereas for rocky shore oysters was 32.8 and 28.3 mm for females and males, respectively. We conclude that the reproduction of <i>S. cucullata</i> and <i>P. capensis</i> occurs mainly in summer, with a short resting period in winter, when many oysters are in the indifferent stage. These results provide valuable information to fisheries for management of both species in the area. |
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| issn | 1424-2818 |
| language | English |
| last_indexed | 2024-03-11T06:40:40Z |
| publishDate | 2023-03-01 |
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| spelling | doaj.art-32383287daf34ebbb15b622eb2b2edce2023-11-17T10:37:35ZengMDPI AGDiversity1424-28182023-03-0115336110.3390/d15030361Gametogenic Cycle of the Oysters <i>Pinctada capensis</i> (Sowerby III, 1890) and <i>Saccostrea cucullata</i> (Born, 1778) (Class Bivalvia) in Inhaca Island, Southern Mozambique: A Subsidy for Bivalve Culture in the RegionMizeque Mafambissa0Mery Rodrigues1Torres Taimo2Carlos Andrade3Mats Lindegart4Adriano Macia5Department of Biological Sciences, Faculty of Science, Eduardo Mondlane University, Maputo 1100, MozambiqueDepartment of Biological Sciences, Faculty of Science, Eduardo Mondlane University, Maputo 1100, MozambiqueDepartment of Biological Sciences, Faculty of Science, Eduardo Mondlane University, Maputo 1100, MozambiqueMARE—Marine and Environmental Sciences Centre/ARNET—Aquatic Research Network, Agência Regional para o Desenvolvimento da Investigação Tecnologia e Inovação (ARDITI), Caminho da Penteada Edif Madeira Tecnopolo, 9020-105 Funchal, PortugalDepartment of Marine Sciences-Tjärnö, University of Gothenburg, 405 30 Gothenburg, SwedenDepartment of Biological Sciences, Faculty of Science, Eduardo Mondlane University, Maputo 1100, MozambiqueThis study describes reproductive aspects of the <i>Pinctada capensis</i> (pearl oyster) and <i>Saccostrea cucullata</i> (rocky shore oyster) in Inhaca Island, southern Mozambique (Western Indian Ocean). Adult oysters were collected monthly over two years within seagrass banks for <i>P. capensis</i> and rocky shore habitats for <i>S. cucullata</i>. The animals were evaluated using biometric and histological analyses of the gonads. Of the total population, females were predominant among larger individuals (>55 mm) and males were more dominant among smaller individuals (<55 mm) for both species. The sex ratio was (1 M–1.5 F) for <i>Pinctada capensis</i> and (1 M–1.6 F) for <i>Saccostrea cucullata</i>. Five gonad maturation stages were identified: indifferent, developing I, developing II, ripe and spent. The size at first maturity was mm and 26.2 mm for pearl oysters females and males, respectively, whereas for rocky shore oysters was 32.8 and 28.3 mm for females and males, respectively. We conclude that the reproduction of <i>S. cucullata</i> and <i>P. capensis</i> occurs mainly in summer, with a short resting period in winter, when many oysters are in the indifferent stage. These results provide valuable information to fisheries for management of both species in the area.https://www.mdpi.com/1424-2818/15/3/361Maputo Bayreproductive biologymolluscapear oysterrocky oysterWestern Indian Ocean |
| spellingShingle | Mizeque Mafambissa Mery Rodrigues Torres Taimo Carlos Andrade Mats Lindegart Adriano Macia Gametogenic Cycle of the Oysters <i>Pinctada capensis</i> (Sowerby III, 1890) and <i>Saccostrea cucullata</i> (Born, 1778) (Class Bivalvia) in Inhaca Island, Southern Mozambique: A Subsidy for Bivalve Culture in the Region Diversity Maputo Bay reproductive biology mollusca pear oyster rocky oyster Western Indian Ocean |
| title | Gametogenic Cycle of the Oysters <i>Pinctada capensis</i> (Sowerby III, 1890) and <i>Saccostrea cucullata</i> (Born, 1778) (Class Bivalvia) in Inhaca Island, Southern Mozambique: A Subsidy for Bivalve Culture in the Region |
| title_full | Gametogenic Cycle of the Oysters <i>Pinctada capensis</i> (Sowerby III, 1890) and <i>Saccostrea cucullata</i> (Born, 1778) (Class Bivalvia) in Inhaca Island, Southern Mozambique: A Subsidy for Bivalve Culture in the Region |
| title_fullStr | Gametogenic Cycle of the Oysters <i>Pinctada capensis</i> (Sowerby III, 1890) and <i>Saccostrea cucullata</i> (Born, 1778) (Class Bivalvia) in Inhaca Island, Southern Mozambique: A Subsidy for Bivalve Culture in the Region |
| title_full_unstemmed | Gametogenic Cycle of the Oysters <i>Pinctada capensis</i> (Sowerby III, 1890) and <i>Saccostrea cucullata</i> (Born, 1778) (Class Bivalvia) in Inhaca Island, Southern Mozambique: A Subsidy for Bivalve Culture in the Region |
| title_short | Gametogenic Cycle of the Oysters <i>Pinctada capensis</i> (Sowerby III, 1890) and <i>Saccostrea cucullata</i> (Born, 1778) (Class Bivalvia) in Inhaca Island, Southern Mozambique: A Subsidy for Bivalve Culture in the Region |
| title_sort | gametogenic cycle of the oysters i pinctada capensis i sowerby iii 1890 and i saccostrea cucullata i born 1778 class bivalvia in inhaca island southern mozambique a subsidy for bivalve culture in the region |
| topic | Maputo Bay reproductive biology mollusca pear oyster rocky oyster Western Indian Ocean |
| url | https://www.mdpi.com/1424-2818/15/3/361 |
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