Document Detail

Genetic analysis of female mating recognition between Drosophila ananassae and Drosophila pallidosa: application of interspecific mosaic genome lines.
MedLine Citation:
PMID:  17768595     Owner:  NLM     Status:  MEDLINE    
Drosophila ananassae and Drosophila pallidosa are closely related species that can produce viable and fertile hybrids of both sexes, although strong sexual isolation exists between the two species. Females are thought to discriminate conspecific from heterospecific males based on their courtship songs. The genetic basis of female discrimination behavior was analyzed using isogenic females from interspecific mosaic genome lines that carry homozygous recombinant chromosomes. Multiple regression analysis indicated a highly significant effect of the left arm of chromosome 2 (2L) on the willingness of females to mate with D. ananassae males. Not only 2L but also the left arm of chromosome X (XL) and the right arm of chromosome 3 (3R) had significant effects on the females' willingness to mate with D. pallidosa males. All regions with strong effects on mate choice have chromosome arrangements characterized by species-specific inversions. Heterospecific combinations of 2L and 3R have previously been suggested to cause postzygotic reproductive isolation. Thus, genes involved in premating as well as postmating isolation are located in or near chromosomal inversions. This conclusion is consistent with the recently proposed hypothesis that "speciation genes" accumulate at a higher rate in non-recombining genome regions when species divergence occurs in the presence of gene flow.
Kyoichi Sawamura; Hua Zhi; Koji Setoguchi; Hirokazu Yamada; Takahiro Miyo; Muneo Matsuda; Yuzuru Oguma
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-09-04
Journal Detail:
Title:  Genetica     Volume:  133     ISSN:  0016-6707     ISO Abbreviation:  Genetica     Publication Date:  2008 Jun 
Date Detail:
Created Date:  2008-05-07     Completed Date:  2008-09-05     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370740     Medline TA:  Genetica     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  179-85     Citation Subset:  IM    
Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8572, Japan.
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MeSH Terms
Crosses, Genetic
Cytogenetic Analysis
Drosophila / genetics*,  physiology*
Genome, Insect*
Parthenogenesis / genetics
Reproduction / genetics
Sex Factors
Sexual Behavior, Animal / physiology*
Species Specificity

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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