作者: Guilherme da Cruz Santos-Neto , Colin Robert Beasley , Horacio Schneider , Daniel Mansur Pimpão , Walter Randolph Hoeh
DOI: 10.1016/J.YMPEV.2016.04.013
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摘要: The current phylogenetic framework for the South American Hyriidae is solely based on morphological data. However, freshwater bivalve morphology highly variable due to both genetic and environmental factors. present study used mitochondrial (COI 16S) nuclear (18S-ITS1) sequences in molecular analyses of nine Neotropical species Hyriidae, collected from 15 rivers, hyriids Australia New Zealand obtained GenBank. findings support traditional taxonomic proposals, morphology, subfamily Hyriinae, currently divided three tribes: Hyriini, Castaliini Rhipidodontini. Phylogenetic trees COI nucleotide revealed at least four geographical groups Castalia ambigua: northeast Amazon (Piria, Tocantins Caete rivers), central Amazon, including C. quadrata (Amazon Aripuana north (Trombetas river), ambigua Peru. Genetic distances suggest that some specimens may be cryptic species. Among a total evidence data set generated indicating Paxyodon syrmatophorus Prisodon obliquus are more closely related, followed by Triplodon corrugatus. clock, COI, agreed with fossil record hyriids. ancestor Australasian estimated have lived around 225million years ago.