Publication
Title
Subtle population structure and male-biased dispersal in two **Copadichromis** species (Teleostei, Cichlidae) from Lake Malawi, East Africa
Author
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.
Language
English
Source (journal)
Hydrobiologia. - The Hague
Publication
The Hague : 2008
ISSN
0018-8158
Volume/pages
615(2008), p. 69-79
ISI
000259909900007
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 22.12.2008
Last edited 17.06.2017
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