Abstract:
:The Lake Victoria 'species flock' of cichlids is puzzling because reproductive isolation often occurs in the absence of substantial ecological differences among species. Theory predicts that this cannot evolve with most genetic mechanisms for mate choice. We provide the first evidence that learning, in the form of sexual imprinting, helps maintain reproductive isolation among closely related cichlid species. Using a cross-fostering experiment, we show that young females develop a sexual preference for males of their foster mothers' species, even reversing species assortative mating preferences. We suggest that learning creates favourable conditions for reproductive isolation to evolve.
journal_name
Biol Lettjournal_title
Biology lettersauthors
Verzijden MN,ten Cate Cdoi
10.1098/rsbl.2006.0601subject
Has Abstractpub_date
2007-04-22 00:00:00pages
134-6issue
2eissn
1744-9561issn
1744-957Xpii
8817K12W1184K4LHjournal_volume
3pub_type
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