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Parallel life history evolution in mouthbrooding cichlids from the African Great Lakes.

TitreParallel life history evolution in mouthbrooding cichlids from the African Great Lakes.
Type de publicationJournal Article
Year of Publication2008
AuteursDuponchelle, F, Paradis, E, Ribbink, AJ, Turner, GF
JournalProc Natl Acad Sci U S A
Volume105
Ticket40
Pagination15475-80
Date Published2008 Oct 7
ISSN1091-6490
Mots-clésAfrica, Animals, Cichlids, Evolution, Molecular, Fertility, Fresh Water, Phylogeny
Résumé

The existence of ancient deep-water lakes provides an opportunity to study the independent adaptation of aquatic organisms to pelagic, benthic, and rocky shore habitats. With improving resolution of their phylogenetic relationships, the many cichlid fish species endemic to the African Great Lakes Malawi, Tanganyika, and Victoria provide a significant resource for the comparative study of such evolutionary processes. Here, we show that cichlid lineages colonizing rocky shores and pelagic habitats in the different lakes have independently evolved larger eggs and lower fecundities than benthic lineages, suggesting parallel adaptive life-history evolution. By contrast, other pelagic teleost fishes in both marine and freshwater habitats, including African lakes, typically produce large numbers of very small eggs. Our results also suggest that decreased fecundity and increased egg size not only occurred independently in each lake but occurred independently in the colonization of rocky and pelagic habitats.

DOI10.1073/pnas.0802343105
Alternate JournalProc. Natl. Acad. Sci. U.S.A.
Identifiant (ID) PubMed18824688
PubMed Central IDPMC2563094