Confounding social and mating systems predictably lead to biased results when examining the evolution of cooperative breeding in cichlids: A response to Tanaka et al.

Published on Jun 1, 2019in Ethology1.467
· DOI :10.1111/ETH.12883
Cody J. Dey12
Estimated H-index: 12
(McMaster University),
Constance M. O'Connor22
Estimated H-index: 22
(McMaster University)
+ 3 AuthorsJohn L. Fitzpatrick33
Estimated H-index: 33
(University of Manchester)
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The evolutionary transition to cooperative breeding often involves high levels of monogamy and therefore indirect fitness benefits to helpers. Here, an alternative pathway is shown for cichlid fishes, involving direct fitness benefits derived from ecological factors such as group living.
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Cooperative breeding has been studied intensively in many species of birds and mammals but remain less well studied in fish. We report a remarkable new example of a cooperatively breeding cichlid from Lake Tanganyika, Neolamprologus obscurus. Using field observations and microsatellite DNA analyses, we studied group structure, helping behavior, relatedness, and dispersal of this species. We present four major observations. First, large territorial breeding males mated with one to eight breeding ...
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