Phylogeography of the mouth-brooding freshwater fish Glossamia aprion (Apogonidae) in northern and eastern Australia: historical biogeography and allopatric speciation

Cook, Benjamin D., Adams, Mark, Unmack, Peter J., Burrows, Damien, Pusey, Bradley J., Perna, Colton, and Hughes, Jane M. (2017) Phylogeography of the mouth-brooding freshwater fish Glossamia aprion (Apogonidae) in northern and eastern Australia: historical biogeography and allopatric speciation. Biological Journal of the Linnean Society, 121 (4). pp. 833-848.

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Abstract

We examined the influence of past and present landscape structure across five regions of northern and eastern Australia on phylogeographic structure in the freshwater fish Glossamia aprion. We predicted the geological isolation of North West Australia would promote the strongest phylogeographic structure, including highest endemism of candidate species and deepest divergences within species, and past low sea level riverine connections in the Carpentaria Region would greatly reduce phylogeographic structure. The allozyme data indicated five candidate species within Australian Glossamia, although the mtDNA data revealed only four of these taxa. Diversity and endemism of the candidate species was highest in North West Australia, but Carpentaria was not the only region to have low species diversity or an absence of endemic species. Three of the five candidate species were narrow range endemics and occurred in regions with known endemism of candidate species in other freshwater fauna. The reported subspecies Glossamia aprion gillii was clearly distinct based on the genetic data, while the fifth species, G. a. aprion, was widely distributed across four of the five regions. The intra-specific analyses for G. a. aprion showed highest phylogeographic structure in North West Australia and lowest phylogeographic structure in Carpentaria. Overall, the results demonstrate the long-term legacy of variable landscape structure on phylogeographic patterns and allopatric speciation.

Item ID: 48896
Item Type: Article (Research - C1)
ISSN: 1095-8312
Keywords: allozymes, candidate species, cyto-nuclear discordance, Gulf of Carpentaria, Kimberley region, mitochondrial DNA
Funders: Commonwealth Environment Research Facilities (CERF), Raising National Water Standards Program, Land and Water Australia, Fisheries Research and Development Corporation (FRDC), Smart State Innovation Fund
Date Deposited: 25 Jul 2017 00:32
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060204 Freshwater Ecology @ 50%
06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060301 Animal Systematics and Taxonomy @ 50%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960807 Fresh, Ground and Surface Water Flora, Fauna and Biodiversity @ 100%
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