Molecular insights into the phylogeny of mormyriform fishes and the evolution of their electric organs

Brain, Behavior and Evolution
J A Alves-Gomes, C D Hopkins

Abstract

In this report we generate a partial phylogeny of the mormyriform fishes using mitochondrial DNA sequences from twelve species of mormyriforms belonging to five genera. Electric organs and electric organ discharges are also examined. We have sequenced and aligned 373 bases from the mitochondrial 12S rRNA and 559 bases from the 16s rRNA from fourteen species of the superorder Osteoglossomorpha. Two non-mormyriform genera were used as outgroups. Three phylogenetic methods generated concordant partial phylogenies for these fish. Our analysis focuses on the genus Brienomyrus, which is a heterogeneous clade with at least eleven nominal species. Six morphs from Gabon had distinctive EODs but were morphologically 'cryptic' in that they all had the brachyistius-like body morphology. DNA analysis fully supports the EOD data that the six morphs represent distinct clades. The group from Gabon is monophyletic, while B. brachyistius from West Africa is a separate lineage. B. niger, a second distinct lineage, is a sister group to the six species from Gabon. Petrocephalus is the sister group of all the genera of the subfamily Mormyrinae so far analyzed, thereby confirming previous osteological results. Gymnarchus niloticus is the sister group...Continue Reading

Citations

Apr 21, 2011·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Jason R GallantCarl D Hopkins
Feb 8, 2019·Journal of Fish Biology·William G R Crampton
Feb 9, 2020·The Journal of Experimental Biology·Jason R Gallant, Lauren A O'Connell
May 7, 2002·Evolution; International Journal of Organic Evolution·John P SullivanCarl D Hopkins
May 25, 2004·Evolution; International Journal of Organic Evolution·John P SullivanCarl D Hopkins
Apr 30, 2011·Science·Bruce A CarlsonMatthew E Arnegard
Jul 19, 2018·The Journal of Experimental Biology·Kerri Lynn AckerlyLauren J Chapman
Mar 11, 2015·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Christiane PaulFrank Kirschbaum
Jun 27, 2013·Journal of Neurogenetics·Bruce A Carlson, Jason R Gallant
Jan 11, 2020·BMC Evolutionary Biology·Mauricio LosillaJason R Gallant
Oct 23, 2016·Journal of Physiology, Paris·William R PitchersJason R Gallant
Jun 14, 2013·The Journal of Experimental Biology·Michael R Markham
May 20, 2006·The Journal of Experimental Biology·Matthew E ArnegardCarl D Hopkins
Oct 27, 1998·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·F H van der BankP F Mulder
Dec 25, 2003·Journal of Physiology, Paris·Philip K Stoddard
Jul 13, 2005·Current Opinion in Neurobiology·Nathaniel B SawtellCurtis C Bell
May 10, 2006·Current Biology : CB·Paul S Katz

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