Contrasting and complex evolutionary histories within the terapontid grunter genus Hephaestus revealed by nuclear and mitochondrial genes

Pusey, Bradley J., Bentley, Andrew, Burrows, Damien, Perna, Colton, Davis, Aaron, and Hughes, Jane (2016) Contrasting and complex evolutionary histories within the terapontid grunter genus Hephaestus revealed by nuclear and mitochondrial genes. Marine and Freshwater Research, 67 (12). MF15198. pp. 1813-1825.

[img] PDF (Published Version) - Published Version
Restricted to Repository staff only

View at Publisher Website: http://dx.doi.org/10.1071/MF15198
 
4
1


Abstract

Contrasting evolutionary histories may be revealed by mitochondrial and nuclear information. Divergent New Guinean and eastern and western Australian lineages of Hephaestus fuliginosus (sooty grunter) were detected using mitochondrial data, with the extent of divergence consistent with cryptic speciation events. However, this phylogeographic pattern was not supported by nuclear gene data, and evidence for cryptic speciation appears driven almost entirely by introgression between H. fuliginosus and congeners on the periphery of its distribution (e.g. with H. tulliensis, H. jenkinsi or H. roemeri). Hephaestus fuliginosus is a single species with a complex evolutionary history. Introgression on the eastern coast is consistent with transfer of the mitochondrial genome of the resident species (H. tulliensis) to the invading species (H. fuliginosus) and may have provided the metabolic capacity for H. fuliginosus to spread into the cooler rainforest environment of the Wet Tropics region. Mitochondrial and nuclear analyses both identified the genus Hephaestus as polyphyletic with H. carbo and H. habbemai placed in a clade with Leiopotherapon unicolor and Amniataba percoides. The present study demonstrated the need to consider a variety of genetic information when assessing species identity in a widespread species and the need for a systematic revision of the genus and family as a whole.

Item ID: 47244
Item Type: Article (Research - C1)
ISSN: 1448-6059
Keywords: introgression, phylogeography, sooty grunter, species complex, Terapontidae
Date Deposited: 11 Jan 2017 07:42
FoR Codes: 06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060301 Animal Systematics and Taxonomy @ 100%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960802 Coastal and Estuarine Flora, Fauna and Biodiversity @ 100%
Downloads: Total: 1
More Statistics

Actions (Repository Staff Only)

Item Control Page Item Control Page