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Séguigne C, Mourier J, Clua É, Buray N, Planes S. Citizen science provides valuable data to evaluate elasmobranch diversity and trends throughout the French Polynesia's shark sanctuary. PLoS One 2023; 18:e0282837. [PMID: 36947523 PMCID: PMC10032523 DOI: 10.1371/journal.pone.0282837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 02/23/2023] [Indexed: 03/23/2023] Open
Abstract
Observers of the Polynesian Shark Observatory (ORP), a citizen science network organized mainly through the Polynesian dive centers, collected an unprecedented amount of data from more than 13,916 dives spanning 43% of the islands of French Polynesia between July 8, 2011, and April 11, 2018. The objective for this type of data collection, which is not accessible within the standard research context, was to provide a unique dataset, and the opportunity to explore the specific diversity, distribution, seasonality and abundance of many elasmobranch species spread out throughout the territory of French Polynesia. Since the data are based on random citizen observations, the spatial distribution was biased toward the most frequented sites and islands where scuba diving is most developed. Overall, the increase in observed abundance of rays and sharks observed in French Polynesia, and the three most sampled islands as well as the high specific diversity recorded for the region, provide first evidence on the effectiveness of the French Polynesia's Shark Sanctuary, established in 2006. These data, collected randomly by the volunteers, also provide insights into potential movement patterns and site fidelity of some of the more commonly observed species. While no final conclusions can be drawn, it is clear that the network of volunteers that regularly contributes information to the Polynesian Shark Observatory plays a very important role in the delivery of much needed data for conservation and management action, as well as providing perspectives for new directions in research on sharks and rays in French Polynesia.
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Affiliation(s)
- Clémentine Séguigne
- PSL Université Paris: EPHE-UPVD-CNRS, USR 3278 CRIOBE BP 1013, Papetoai, Moorea, French Polynesia
- Laboratoire d'Excellence "CORAIL", Moorea, French Polynesia
| | - Johann Mourier
- Observatoire des Requins de Polynésie, Temae, Moorea, French Polynesia
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Sète, France
| | - Éric Clua
- PSL Université Paris: EPHE-UPVD-CNRS, USR 3278 CRIOBE BP 1013, Papetoai, Moorea, French Polynesia
- Laboratoire d'Excellence "CORAIL", Moorea, French Polynesia
- Observatoire des Requins de Polynésie, Temae, Moorea, French Polynesia
| | - Nicolas Buray
- Observatoire des Requins de Polynésie, Temae, Moorea, French Polynesia
| | - Serge Planes
- PSL Université Paris: EPHE-UPVD-CNRS, USR 3278 CRIOBE BP 1013, Papetoai, Moorea, French Polynesia
- Laboratoire d'Excellence "CORAIL", Moorea, French Polynesia
- Observatoire des Requins de Polynésie, Temae, Moorea, French Polynesia
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Somrup S, Sangsawang A, McMillan N, Winitchai S, Inthoncharoen J, Liu S, Muangmai N. Pinctadaphuketensis sp. nov. (Bivalvia, Ostreida, Margaritidae), a new pearl oyster species from Phuket, western coast of Thailand. Zookeys 2022; 1119:181-195. [PMID: 36762354 PMCID: PMC9848700 DOI: 10.3897/zookeys.1119.87724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 08/11/2022] [Indexed: 11/12/2022] Open
Abstract
A new species of the genus Pinctada is described from samples collected from the east coast of Phuket Island, Thailand in the Andaman Sea. Pinctadaphuketensis sp. nov. is distinguished from other species on both molecular and morphological data. Morphologically, the valves of P.phuketensis are characterized by a slightly developed to undeveloped posterior auricle, a small, narrow slit-like byssal notch, the absence of hinge teeth, and a pale to transparent non-nacreous border, with a few dark brown or red blotches. This new species resembles P.fucata but differs by its smaller size and the absence of hinge teeth. Phylogenetic analyses based on both mitochondrial (COI) and nuclear (18S rDNA, ITS1 and ITS2) genes and species delimitation using COI data strongly support that P.phuketensis is a distinct species, which is closely related to Pinctadaalbina and Pinctadanigra.
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Affiliation(s)
- Supannee Somrup
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China,Department of Aquaculture, Faculty of Fisheries, Kasetsart University, Bangkok 10900, Thailand
| | - Akkarasiri Sangsawang
- Department of Aquaculture, Faculty of Fisheries, Kasetsart University, Bangkok 10900, Thailand
| | - Nichanun McMillan
- Department of Aquaculture, Faculty of Fisheries, Kasetsart University, Bangkok 10900, Thailand
| | - Supanida Winitchai
- Department of Aquaculture, Faculty of Fisheries, Kasetsart University, Bangkok 10900, Thailand
| | - Jitti Inthoncharoen
- Kasetsart Agricultural and Agro-Industrial Product Improvement Institute (KAPI), Kasetsart University, Bangkok 10900, Thailand
| | - Shikai Liu
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Narongrit Muangmai
- Department of Aquaculture, Faculty of Fisheries, Kasetsart University, Bangkok 10900, Thailand,Phuket Pearl Industry, Co. Ltd., Phuket 83000, Thailand
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Le Luyer J, Monaco CJ, Milhade L, Reisser C, Soyez C, Raapoto H, Belliard C, Le Moullac G, Ky C, Pernet F. Gene expression plasticity, genetic variation and fatty acid remodelling in divergent populations of a tropical bivalve species. J Anim Ecol 2022; 91:1196-1208. [DOI: 10.1111/1365-2656.13706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 04/07/2022] [Indexed: 10/18/2022]
Affiliation(s)
- J. Le Luyer
- Ifremer, IRD, Institut Louis‐Malardé, Univ Polynésie française, EIO, F‐98719 Taravao, Tahiti, Polynésie française France
| | - C. J. Monaco
- Ifremer, IRD, Institut Louis‐Malardé, Univ Polynésie française, EIO, F‐98719 Taravao, Tahiti, Polynésie française France
| | - L. Milhade
- Ifremer, IRD, Institut Louis‐Malardé, Univ Polynésie française, EIO, F‐98719 Taravao, Tahiti, Polynésie française France
| | - C. Reisser
- Ifremer, IRD, Institut Louis‐Malardé, Univ Polynésie française, EIO, F‐98719 Taravao, Tahiti, Polynésie française France
- MARBEC, Univ Montpellier, CNRS, IFREMER, IRD Montpellier France
| | - C. Soyez
- Ifremer, IRD, Institut Louis‐Malardé, Univ Polynésie française, EIO, F‐98719 Taravao, Tahiti, Polynésie française France
| | - H. Raapoto
- Ifremer, IRD, Institut Louis‐Malardé, Univ Polynésie française, EIO, F‐98719 Taravao, Tahiti, Polynésie française France
| | - C. Belliard
- Ifremer, IRD, Institut Louis‐Malardé, Univ Polynésie française, EIO, F‐98719 Taravao, Tahiti, Polynésie française France
| | - G. Le Moullac
- Ifremer, IRD, Institut Louis‐Malardé, Univ Polynésie française, EIO, F‐98719 Taravao, Tahiti, Polynésie française France
| | - C.‐L. Ky
- Ifremer, IRD, Institut Louis‐Malardé, Univ Polynésie française, EIO, F‐98719 Taravao, Tahiti, Polynésie française France
- Ifremer, IHPE, Univ. Montpellier, CNRS, Univ. Perpignan Via Domitia Montpellier France
| | - F. Pernet
- Univ Brest, Ifremer, CNRS, IRD, LEMAR, F‐29280 Plouzané France
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