Is sexual selection and species recognition a continuum? Mating behavior of the stalk-eyed fly Drosophila heteroneura
AUTOR(ES)
Boake, Christine R. B.
FONTE
The National Academy of Sciences of the USA
RESUMO
If behavioral isolation between species can evolve as a consequence of sexual selection within a species, then traits that are both sexually selected and used as a criterion of species recognition by females should be identifiable. The broad male head of the Hawaiian picture-winged fly Drosophila heteroneura is a novel sexual dimorphism that may be sexually selected and involved in behavioral isolation from D. silvestris. We found that males with broad heads are more successful in sexual selection, both through female mate choice and through aggressive interactions. However, female D. heteroneura do not discriminate against hybrids on the basis of their head width. Thus, this novel trait is sexually selected but is not a major contributor to species recognition. Our methods should be applicable to other species in which behavioral isolation is a factor.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=24989Documentos Relacionados
- Saccadic head rotations during walking in the stalk-eyed fly (Cyrtodiopsis dalmanni)
- Taxonomic revision of the Neotropical stalk-eyed fly Plagiocephalus Wiedemann (Diptera, Ulidiidae, Ulidiinae)
- Sex Chromosome Meiotic Drive in Stalk-Eyed Flies
- The effect of transient food stress on female mate preference in the stalk-eyed fly Cyrtodiopsis dalmanni.
- Meiotic drive alters sperm competitive ability in stalk-eyed flies.