Molecular systematics of Middle American cichlid fishes and the evolution of trophic-types in 'Cichlasoma (Amphilophus)' and 'C. (Thorichthys)'

Molecular Phylogenetics and Evolution
K J RoeC Lydeard

Abstract

The majority of Middle American cichlids are placed in the informal assemblage 'Cichlasoma.' The group is divided into eight sections which appear to be based primarily on trophic morphology. Although several members of 'Cichlasoma' have been used in ecomorphological, behavioral, and biogeographic studies, no phylogenetic hypotheses for the group exist. In an attempt to develop a better understanding of the phylogenetic relationships of 'cichlasomine' cichlids, we examined the evolution of the trophic specialization, substratum-sifting, in two sections, 'Cichlasoma (Thorichthys)' and 'C. (Amphilophus),' to determine whether the trait reflects common ancestry. We sequenced the complete mitochondrial cytochrome b gene for 19 cichlids representing six sections of 'Cichlasoma,' and representatives of other Neotropical Cichlidae. Additional cichlid, and noncichlid outgroup sequences were included for a total of 22 taxa. The molecular phylogeny supports the recognition of the section 'C. (Thoricthys)' as a natural group, and we place those cichlids in the genus Thorichthys. The phylogeny also depicts 'C. (Amphilophus)' as paraphyletic, with substratum-sifters and generalized predators forming separate nonsister clades. We recommend t...Continue Reading

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Citations

May 20, 1999·Proceedings. Biological Sciences·J K ElliottP T Boag
Feb 25, 2010·Molecular Phylogenetics and Evolution·Hernán López-FernándezRodney L Honeycutt
Dec 1, 2006·Evolution; International Journal of Organic Evolution·C D HulseyR Rodiles-Hernández
Nov 30, 2010·Molecular Phylogenetics and Evolution·C Darrin HulseyPhillip R Hollingsworth
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Oct 6, 1999·Molecular Phylogenetics and Evolution·G Bernardi, G Bucciarelli
May 1, 1998·Molecular Phylogenetics and Evolution·A P Martin, E Bermingham
Jun 25, 1999·Molecular Phylogenetics and Evolution·F BredenC A Figueiredo
Jul 1, 2005·The Journal of Parasitology·Edgar F Mendoza-Franco, Víctor M Vidal-Martinez
Nov 25, 2003·Molecular Ecology·Michael A McCartneyW Owen McMillan
Oct 27, 1998·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·F H van der BankP F Mulder

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