Data/hora: 06/06/2024 14:59:37

Provedor de dados: 	5	
País: 	France	
Título: 	Population differentiation or species formation across the Indian and the Pacific Oceans? An example from the brooding marine hydrozoan Macrorhynchia phoenicea	
Autores: 	Postaire, Bautisse; Gelin, Pauline; Bruggemann, J. Henrich; Pratlong, Marine; Magalon, Helene.	
Data: 	2017-10	
Ano: 	2017	
Palavras-chave: 	Assignment test; Brooding species; Cryptic diversity; Hydrozoa; Microsatellites.	
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 (&lt;10 km distance) and among islands (100 to &gt;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.	
Tipo: 	Text	
Idioma: 	Inglês	
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/	
Editor: 	Wiley	
Formato: 	application/pdf	
Fonte: 	Ecology And Evolution (2045-7758) (Wiley), 2017-10 , Vol. 7 , N. 20 , P. 8170-8186	
Fonte: 	2017 The Authors. Ecology and Evolution published by John Wiley &amp; Sons Ltd

info:eu-repo/semantics/openAccess

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