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Evidence for placing the false gharial (Tomistoma schlegelii) into the family Gavialidae: Inferences from nuclear gene sequences by Ray E. Willis; L. Rex McAliley; Erika D. Neeley; Llewellyn D. Densmore III is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

What is Evidence for placing the false gharial (Tomistoma schlegelii) into the family Gavialidae: Inferences from nuclear gene sequences about?

The extant crocodylians comprise 23 species divided among three families, Alligatoridae, Crocodylidae, and Gavialidae. Currently, based on morphological data sets, Tomistoma schlegelii (false gharial) is placed within the family Crocodylidae. Molecular data sets consistently support a sister-taxon relationship of T. schlegelii with Gavialis gangeticus (Indian Gharial), which is the sole species in Gavialidae. To elucidate the placement of T. schlegelii within the extant crocodylians, we have sequenced 352bp of the dentin matrix protein 1 (DMP1) nuclear gene in 30 individuals and 424bp of the nuclear gene C-mos in 74 individuals. Molecular analysis of the DMP1 data set indicates that it is highly conserved within the Crocodylia. Of special note is a seven base-pair indel (GTGCTTT) shared by T. schlegelii and G. gangeticus, that is absent in the genus Crocodylus, Osteolaemus, and Mecistops. To date, C-mos is the largest molecular data set analyzed for any crocodylian study including multiple samples from all representatives of the eight extant genera. Analysis of these molecular data sets, both as individual gene sequences and concatenated sequences, support the hypothesis that T. sc

Who reads Evidence for placing the false gharial (Tomistoma schlegelii) into the family Gavialidae: Inferences from nuclear gene sequences?

Author

Ray E. Willis; L. Rex McAliley; Erika D. Neeley; Llewellyn D. Densmore III

Publisher

Elsevier Science; Elsevier ; Elsevier Inc.; Elsevier BV (ISSN 1055-7903)

Published

2007

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)