Reticulate evolution: ancient introgression of the Adriatic brown trout mtDNA in softmouth trout Salmo obtusirostris (Teleostei: Salmonidae)

Two populations of softmouth trout (Salmo obtusirostris) from the rivers Neretva (Bosnia and Herzegovina) and Jadro (Croatia), along with two neighbouring populations of brown trout (Salmo trutta) were analysed with a suite of genetic markers (two mtDNA genes, two nuclear genes, and nine microsatell...

Full description

Saved in:
Bibliographic Details
Published in:Biological journal of the Linnean Society 2007, Vol.90 (1), p.139-152
Main Authors: SUŠNIK, S, WEISS, S, ODAK, T, DELLING, B, TREER, T, SNOJ, A
Format: Article
Language:English
Subjects:
Adriatic basin
Agnatha. Pisces
Biological and medical sciences
Biological evolution
Fundamental and applied biological sciences. Psychology
Genetics of eukaryotes. Biological and molecular evolution
introgression
introgressive hybridization
microsatellite repeats
microsatellites
mtDNA capture
Salmo
Salmo trutta
Teleostei
Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Two populations of softmouth trout (Salmo obtusirostris) from the rivers Neretva (Bosnia and Herzegovina) and Jadro (Croatia), along with two neighbouring populations of brown trout (Salmo trutta) were analysed with a suite of genetic markers (two mtDNA genes, two nuclear genes, and nine microsatellites) as well as morphological characters. The Jadro softmouth trout were fixed for a brown trout mtDNA haplotype of the Adriatic lineage, which is 1.7% divergent from a previously described haplotype characteristic for the Neretva softmouth trout. All other genetic markers, as well as morphological analysis, supported the clear distinction of softmouth trout from the rivers Neretva and Jadro from brown trout in neighbouring populations, and thus a mtDNA capture event is assumed. Population specific microsatellite allele profiles, as well as a high number of private alleles for both populations of softmouth trout, support the hybridization between brown trout and the Jadro softmouth trout most likely being of ancient origin, thus leading to a reticulate evolutionary pattern of mtDNA in this taxon.
ISSN:0024-4066
1095-8312
DOI:10.1111/j.1095-8312.2007.00717.x