Microsatellite genotyping of Mediterranean population of Ircinia fasciculata and Ircinia variabilis
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2016
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| author | Riesgo, Ana Pérez-Portela, Rocío Pita, Lucía Blasco, Gema Erwin, Patrick S López-Legentil, Susanna |
| author_facet | Riesgo, Ana Pérez-Portela, Rocío Pita, Lucía Blasco, Gema Erwin, Patrick S López-Legentil, Susanna |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Recent episodes of mass mortalities in the Mediterranean Sea have been reported for the closely related marine sponges Ircinia fasciculata and I. variabilis, which live in sympatry. In this context, the assessment of the genetic diversity, bottlenecks and connectivity of these sponges has become urgent in order to evaluate the potential effects of mass mortalities on their latitudinal range. Our study aims to establish 1.) the genetic structure, connectivity, and signs of bottlenecks across the populations of I. fasciculata, and 2.) the hybridization levels between I. fasciculata and I. variabilis. To accomplish the first objective, 194 individuals of I. fasciculata from 12 locations across the Mediterranean were genotyped at 14 microsatellite loci. For the second objective, mitochondrial cytochrome c oxidase subunit I sequences of 16 individuals from both species were analyzed along with genotypes at 12 microsatellite loci of 40 individuals coexisting in 3 Mediterranean populations. We detected strong genetic structure along the Mediterranean for I. fasciculata, with high levels of inbreeding in all locations and bottleneck signs in most locations. Oceanographic barriers like the Almeria-Oran front, North-Balearic front, and the Ligurian-Thyrrenian barrier seem to be impeding gene flow for I. fasciculata, adding population divergence to the pattern of isolation by distance derived from the low dispersal abilities of sponge larvae. Hybridization between both species occurred in some populations, which might be increasing genetic diversity and somewhat palliating the genetic loss caused by population decimation in I. fasciculata |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_860018 |
| institution | PANGAEA |
| language | en |
| publishDate | 2016 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Microsatellite genotyping of Mediterranean population of Ircinia fasciculata and Ircinia variabilis Riesgo, Ana Pérez-Portela, Rocío Pita, Lucía Blasco, Gema Erwin, Patrick S López-Legentil, Susanna File content; File name; File size; Mediterranean_Sea; Mediterranean Sea; Uniform resource locator/link to file Recent episodes of mass mortalities in the Mediterranean Sea have been reported for the closely related marine sponges Ircinia fasciculata and I. variabilis, which live in sympatry. In this context, the assessment of the genetic diversity, bottlenecks and connectivity of these sponges has become urgent in order to evaluate the potential effects of mass mortalities on their latitudinal range. Our study aims to establish 1.) the genetic structure, connectivity, and signs of bottlenecks across the populations of I. fasciculata, and 2.) the hybridization levels between I. fasciculata and I. variabilis. To accomplish the first objective, 194 individuals of I. fasciculata from 12 locations across the Mediterranean were genotyped at 14 microsatellite loci. For the second objective, mitochondrial cytochrome c oxidase subunit I sequences of 16 individuals from both species were analyzed along with genotypes at 12 microsatellite loci of 40 individuals coexisting in 3 Mediterranean populations. We detected strong genetic structure along the Mediterranean for I. fasciculata, with high levels of inbreeding in all locations and bottleneck signs in most locations. Oceanographic barriers like the Almeria-Oran front, North-Balearic front, and the Ligurian-Thyrrenian barrier seem to be impeding gene flow for I. fasciculata, adding population divergence to the pattern of isolation by distance derived from the low dispersal abilities of sponge larvae. Hybridization between both species occurred in some populations, which might be increasing genetic diversity and somewhat palliating the genetic loss caused by population decimation in I. fasciculata |
| title | Microsatellite genotyping of Mediterranean population of Ircinia fasciculata and Ircinia variabilis |
| topic | File content; File name; File size; Mediterranean_Sea; Mediterranean Sea; Uniform resource locator/link to file |
| url | https://doi.org/10.1594/PANGAEA.860018 |