Consulta: subjectFacets:"Secondary contact"
Registros recuperados: 2
Data/hora: 10/06/2024 07:58:15

Morphological variation in a secondary contact between divergent lineages of brown trout (Salmo trutta) from the Iberian Peninsula
Provedor de dados: 74
Autores: Hermida,Miguel; San Miguel,Eduardo; Bouza,Carmen; Castro,Jaime; Martínez,Paulino.
The aim of this study was to analyze the morphological variation of brown trout (Salmo trutta) in the Duero basin, an Atlantic river basin in the Iberian Peninsula, where a spatial segregation of two divergent lineages was previously reported, based on isozyme, microsatellite and mtDNA data. In these studies, two divergent pure regions (Pisuerga and Lower-course) and several hybrid populations between them were identified. Morphological variation was evaluated in 11 populations representative of the genetic differentiation previously observed in the Duero basin, using multivariate analysis on 12 morphometric and 4 meristic traits. A large differentiation between populations was observed (interpopulation component of variance: 41.8%), similar to that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brown trout; Secondary contact; Morphometric; Meristic; Multivariate analysis.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000100007

Replicated anthropogenic hybridisations reveal parallel patterns of admixture in marine mussels
Provedor de dados: 5
Autores: Simon, Alexis; Arbiol, Christine; Nielsen, Einar Eg; Couteau, Jérôme; Sussarellu, Rossana; Burgeot, Thierry; Bernard, Ismaël; Coolen, Joop W. P.; Lamy, Jean-baptiste; Robert, Stephane; Skazina, Maria; Strelkov, Petr; Queiroga, Henrique; Cancio, Ibon; Welch, John J.; Viard, Frédérique; Bierne, Nicolas.
Human‐mediated transport creates secondary contacts between genetically differentiated lineages, bringing new opportunities for gene exchange. When similar introductions occur in different places, they provide informally replicated experiments for studying hybridisation. We here examined 4,279 Mytilus mussels, sampled in Europe and genotyped with 77 ancestry‐informative markers. We identified a type of introduced mussels, called “dock mussels,” associated with port habitats and displaying a particular genetic signal of admixture between M. edulis and the Mediterranean lineage of M. galloprovincialis. These mussels exhibit similarities in their ancestry compositions, regardless of the local native genetic backgrounds and the distance separating colonised...
Tipo: Text
Palavras-chave: Admixture; Bentho-pelagic species; Biological introductions; Clines; Ports; Secondary contact.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00594/70600/68791.pdf