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Evidence for multiple historical colonizations of an endoreic drainage basin by an Australian freshwater fish
Author(s) -
Huey J. A.,
Baker A. M.,
Hughes J. M.
Publication year - 2011
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.2011.03088.x
Subject(s) - biology , structural basin , drainage basin , freshwater fish , ecology , mtdna control region , genetic structure , colonization , fish <actinopterygii> , mitochondrial dna , clade , genetic variation , fishery , geography , phylogenetics , paleontology , gene , biochemistry , cartography , genotype , haplotype
The contemporary and historical colonization capacity of an Australian freshwater fish, north‐west glassfish Ambassis sp., was tested using mtDNA sequence data and six newly developed microsatellite loci in an endoreic basin in central Australia. Overall, Ambassis sp. exhibited weak genetic structure within catchments, suggesting some capacity to recolonize extirpated waterholes after disturbance. Genetic structure revealed that the historical pattern of connectivity among catchments in the Lake Eyre Basin was dramatically different from other species studied in this region. Two highly divergent clades were detected in separate catchments in the basin. mtDNA from individuals sampled in catchments north of the Lake Eyre Basin suggest that Ambassis sp. has colonized on two separate occasions from catchments in northern Australia, subsequently generating two highly divergent lineages.