| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Population differentiation or species formation across the Indian and the Pacific Oceans? An example from the brooding marine hydrozoan Macrorhynchia phoenicea
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| Autores: |
Postaire, Bautisse
Gelin, Pauline
Bruggemann, J. Henrich
Pratlong, Marine
Magalon, Helene
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| Data: |
2017-10
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| Ano: |
2017
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| Palavras-chave: |
Assignment test
Brooding species
Cryptic diversity
Hydrozoa
Microsatellites
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| Resumo: |
Assessing population connectivity is necessary to construct effective marine protected areas. This connectivity depends, among other parameters, inherently on species dispersal capacities. Isolation by distance (IBD) is one of the main modes of differentiation in marine species, above all in species presenting low dispersal abilities. This study reports the genetic structuring in the tropical hydrozoan Macrorhynchia phoenicea α (sensu Postaire et al., 2016a), a brooding species, from 30 sampling sites in the Western Indian Ocean and the Tropical Southwestern Pacific, using 15 microsatellite loci. At the local scale, genet dispersal relied on asexual propagation at short distance, which was not found at larger scales. Considering one representative per clone, significant positive FIS values (from −0.327*** to 0.411***) were found within almost all sites. Gene flow was extremely low at all spatial scales, among sites within islands (<10 km distance) and among islands (100 to >11,000 km distance), with significant pairwise FST values (from 0.035*** to 0.645***). A general pattern of IBD was found at the Indo-Pacific scale, but also within ecoregions in the Western Indian Ocean province. Clustering and network analyses identified each island as a potential independent population, while analysis of molecular variance indicated that population genetic differentiation was significant at small (within island) and intermediate (among islands within province) spatial scales. As shown by this species, a brooding life cycle might be corollary of the high population differentiation found in some coastal marine species, thwarting regular dispersal at distances more than a few kilometers and probably leading to high cryptic diversity, each island housing independent evolutionary lineages.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00399/51011/51795.pdf
https://archimer.ifremer.fr/doc/00399/51011/51797.jpg
https://archimer.ifremer.fr/doc/00399/51011/51798.pdf
https://archimer.ifremer.fr/doc/00399/51011/51799.xlsx
https://archimer.ifremer.fr/doc/00399/51011/51800.xlsx
https://archimer.ifremer.fr/doc/00399/51011/51801.xlsx
DOI:10.1002/ece3.3236
https://archimer.ifremer.fr/doc/00399/51011/
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| Editor: |
Wiley
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| Formato: |
application/pdf
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| Fonte: |
Ecology And Evolution (2045-7758) (Wiley), 2017-10 , Vol. 7 , N. 20 , P. 8170-8186
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| Direitos: |
2017 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd
info:eu-repo/semantics/openAccess
restricted use
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