Reproduction of the endangered fan mussel Pinna nobilis under natural and captivity conditions
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Author
Hernandis, Sebastián
García-March, Jose Rafael
Vázquez-Luis, Maite
Tena-Medialdea, José
Publication date
2023-09-05ISSN
1052-0755
Abstract
1. A mass mortality event that started in 2016 has put the fan mussel Pinna nobilis close to the brink of extinction, leading to the species being classified as Critically Endangered in the Red List of the International Union for Conservation of Nature. Under current circumstances, with the persistence of the disease caused by Haplosporidium pinnae in the open sea, isolated populations in coastal lagoons and estuarine bays appear to be the main chance for the survival of the species.
2. The low resilience of those populations highlights the importance of implementing additional measures to avoid the extinction of the fan mussel. One of these measures relies on completing its reproductive cycle in captivity. The reproductive window of the remaining fan mussel population in Alfacs Bay was explored to obtain gametes and to understand possible limitations in the reproductive activity in wild populations. For this purpose, during the reproductive season, several groups of individuals were relocated for short periods (~2 weeks) into the vivarium to obtain gametes under controlled conditions. Simultaneously, controlled temperature treatments and adapted food dosage for conditioning adult fan mussels out of their reproductive season in the wild were conducted in a recirculating aquaculture system.
3. The reproduction of natural populations was mostly restricted to May, featuring temperatures around 20°C. A low success of spawning was obtained in the vivarium, with a 0% success in 11 out of 20 of the trials (six to nine individuals each) and an overall success of 16% (25 out of 156 individuals). A 100% success (14 out of 14) was obtained with individuals conditioned for ~2 months in the recirculating aquaculture system. A second conditioning of six of those individuals was attempted after a ~3-month period, with a 33.3% success of spawning.
Document Type
Article
Document version
Accepted version
Language
English
Subject (CDU)
574 - General ecology and biodiversity
637 - Produce of domestic (farmyard) animals and game
Pages
19
Publisher
Wiley
Is part of
Aquatic Conservation: Marine and Freshwater Ecosystems
Citation
Hernandis, Sebastián, Patricia Prado, Jose Rafael García-March, Ignasi Gairin, Maite Vázquez-Luis, and José Tena-Medialdea. 2023. “Reproduction of the endangered fan mussel Pinna nobilis under natural and captivity conditions”. Aquatic Conservation: Marine and Freshwater Ecosystems. doi:10.1002/aqc.4009
Grant agreement number
MITECO/ / /ES/Reproducción de Pinna nobilis en condiciones de cautividad e identificación de zonas libres de Haplosporidium pinnae para la reintroducción de juveniles mediante semilla centinela/PinnaSpat
MITECO/ / /ES/Seguimiento, recuperación y acciones de ciencia ciudadana en las poblaciones remanentes de Pinna nobilis del Delta del Ebro y el Mar Menor/RecuperaPinna
MITECO/ / /ES/Estrategias Marinas de España, protegiendo el mar para todos/EsMarEs
Program
Aigües Marines i Continentals
Aqüicultura
This item appears in the following Collection(s)
- ARTICLES CIENTÍFICS [2555]
Rights
© 2023 John Wiley & Sons Ltd.