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Reproductive isolation and the nest sites of Lake Malawi chambo, Oveochvomis ( Nyasalapia ) spp.
Author(s) -
Turner G. F.,
Witimani J.,
Robinson R. L.,
Grimm A. S.,
Pitcher T. J.
Publication year - 1991
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1991.tb04407.x
Subject(s) - biology , nest (protein structural motif) , cape , fishery , reproductive isolation , cichlid , ecology , zoology , fish <actinopterygii> , geography , archaeology , population , biochemistry , demography , sociology
The nest sites of chambo, Oreochromis (Nyusalupia) spp. were surveyed in the vicinity of Cape Maclear, Lake Malawi. O. karongae (Trewavas) nested at depths of 0.5 to 28 m, while O. lidole bred at depths greater than 17 m. Nesting areas overlapped between these two species. O. lidole (Trewavas) nests were generally larger than those of O. karongae . Both species bred from September to March. Contrary to previous suggestions, the two chambo species were not reproductively isolated by breeding depth, season, or beach type.