Academic Journal
Native Population Structure beyond Hatchery Introgression in the Endemic Sicilian Trout
| Title: | Native Population Structure beyond Hatchery Introgression in the Endemic Sicilian Trout |
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| Authors: | Nuria Sanz, Rosa-Maria Araguas, Monica Giampiccolo, Antonino Duchi |
| Source: | Diversity, Vol 15, Iss 2, p 274 (2023) |
| Publisher Information: | MDPI AG, 2023. |
| Publication Year: | 2023 |
| Collection: | LCC:Biology (General) |
| Subject Terms: | gene diversity, introgression, microsatellites, mtDNA, Salmo cettii, Sicily, Biology (General), QH301-705.5 |
| More Details: | Brown trout populations living in the limit of the distribution of the species face challenging environmental conditions. In islands, this vulnerable situation is exacerbated by geographical isolation. Sicilian trout persist only in the south-eastern part of the island and, based on their morphological characteristics, they have been recognized as a distinct species named Salmo cettii. We present the most extensive genetic study on Sicilian trout, based on 213 individuals from nine different streams in four basins. Sequencing of the mitochondrial control region and genotyping of the LDH-C* locus and eight microsatellite markers were carried out to evaluate hatchery introgression from past stocking practices in natural populations and to estimate the gene diversity distribution in populations. Results showed that only trout from the Tellesimo River remained free of hatchery introgression. Gene diversity was low in this native population, but increased in the rest of the samples, probably because of the introduction of hatchery genes. Despite the high level of introgression, the distribution of gene diversity depicted a clear natural pattern of population structure related to the hydrographic hierarchy. Because they represent long evolutionary histories, Sicilian trout populations should be considered of high conservation priority and managed according to at least four different genetic units. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 15020274 1424-2818 54985862 |
| Relation: | https://www.mdpi.com/1424-2818/15/2/274; https://doaj.org/toc/1424-2818 |
| DOI: | 10.3390/d15020274 |
| Access URL: | https://doaj.org/article/4862a01572c549858624788aa778fad5 |
| Accession Number: | edsdoj.4862a01572c549858624788aa778fad5 |
| Database: | Directory of Open Access Journals |
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| ISSN: | 15020274 14242818 54985862 |
|---|---|
| DOI: | 10.3390/d15020274 |
| Published in: | Diversity |
| Language: | English |