Subtle population structure and male-biased dispersal in two Copadichromis species (Teleostei, Cichlidae) from Lake Malawi, East Africa

Anseeuw, Dieter, Maes, Gregory E., Busselen, Paul, Knapen, Dries, Snoeks, Jos, and Verheyen, Erik (2008) Subtle population structure and male-biased dispersal in two Copadichromis species (Teleostei, Cichlidae) from Lake Malawi, East Africa. Hydrobiologia, 615 (1). pp. 69-79.

[img] PDF (Published Version) - Published Version
Restricted to Repository staff only

View at Publisher Website: http://dx.doi.org/10.1007/s10750-008-956...
7


Abstract

Various attributes of cichlid biology have been suggested to drive their propensity for rapid speciation, including population substructuring over short geographic distances. While this seems especially true for the rock-dwelling Mbuna species from Lake Malawi, the present study shows that geographic or habitat barriers are not sufficient to explain population substructuring in the less substrate-bound Utaka (non-Mbuna) species. We found similar levels of subtle population structure in the rock-dwelling Copadichromis quadrimaculatus and in the sand-dwelling C. sp. 'virginalis kajose' (F ST < 0.01 in both species) without a discernable geographical pattern. We suggest that aspects of the reproductive strategy, by which seasonal aggregation alternates with more free-ranging stages, may facilitate the establishment of small population differences in Utaka. This hypothesis agrees with our finding that in these cichlids dispersal appears to be male biased.

Item ID: 30592
Item Type: Article (Research - C1)
ISSN: 1573-5117
Keywords: cichlids, Copadichromis, population structure, sex-biased dispersal, habitat preference, mating strategy
Funders: Interdisciplinary Research Centre of the KULeuven Campus Kortrijk, King Leopold III Fund for Nature Exploration and Conservation, Fund for Scientific Research (FWO)
Date Deposited: 25 Jun 2014 01:05
FoR Codes: 06 BIOLOGICAL SCIENCES > 0604 Genetics > 060411 Population, Ecological and Evolutionary Genetics @ 60%
06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060309 Phylogeny and Comparative Analysis @ 40%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960807 Fresh, Ground and Surface Water Flora, Fauna and Biodiversity @ 50%
96 ENVIRONMENT > 9606 Environmental and Natural Resource Evaluation > 960699 Environmental and Natural Resource Evaluation not elsewhere classified @ 50%
More Statistics

Actions (Repository Staff Only)

Item Control Page Item Control Page