Phylogenetic relationships and historical biogeography of melanotaeniid fishes in Australia and New Guinea

摘要: Phylogenetic analysis of melanotaeniid mtDNA cytochrome b and tRNA Pro-control region sequence is broadly consistent with the current taxonomy. However, molecular phylogeny supports elevation M. s. australis to full species status indicates either that it a composite or has introgressed sympatric Melanotaenia species. Phenotypically cryptic diversity in north-eastern Australia possibly represents an undescribed Six major monophyletic clades present were strongly supported by morphological data. The represent three biogeographic regions. Fish from northern New Guinea form clade, within which Glossolepis are polyphyletic. divergence this clade those southern final uplift Central Highlands 5 million years BP. North-western associated islands another highly divergent, similar age Guinea. remaining four assemblage restricted Australia: one Australia, disjunct distribution north-western eastern widespread throughout Guinea, outlying Australia. phylogenetic relationships between episodic connection via freshwater Lake Carpentaria during periods low sea level.