Reproductive isolation among closely related Lake Malawi cichlids: can males recognize conspecific females by visual cues?
Article Abstract:
Speciation has been rapid among the cichlid flocks of the African Great Lakes, and the breeding systems of these fish may shed light on evolutionary processes. Mate recognition in three species of Lake Malawi cichlids has been studied through noting the responses of males to females of the same and different species. Some males were able to tell which were the fish from their own species just by using visual cues, but not all males were able to do this. Males were unable consistently to tell the difference between females of different species where they were phenotypically similar.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1999
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Female redlip blennies prefer older males
Article Abstract:
Observation of redlip blennies, small reef fish, indicates that there is a link between age and mating success, and that female blennies have a preference for older males, which also guard nests for longer. Though age and size tend to be linked in fish, with older fish tending to be bigger, both the blennies' mating success and their guarding ability were related to age rather than size. Females appear to judge the age of male fish by criteria other than size, though what criteria are being used has not been discovered.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1993
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Mother species-father species: unidirectional hybridization in animals with female choice
Article Abstract:
A review of factors promoting unidirectional or reciprocal hybridization has made it possible to develop a sexual selection hypothesis for unidirectional hybridization in animals with female choice. It appears that female choice plays a key role in promoting unidirectional hybridization. Reciprocal hybridization may therefore be anticipated when female choice is circumvented. It is likely that scarcity of a conspecific mate is the main reason for hybridization between animal species.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1999
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