Molecular evolutionary analysis of seminal receptacle sperm storage organ genes of Drosophila melanogaster

A. M. Prokupek, S. I. Eyun, L. Ko, E. N. Moriyama, L. G. Harshman

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


Sperm storage organs are common and broadly distributed among animal taxa. However, little is known about how these organs function at the molecular level. Additionally, there is a paucity of knowledge about the evolution of genes expressed in these organs. This investigation is an evolutionary expressed sequence tag (EST) study of genes expressed in the seminal receptacle, one of the sperm storage organs in Drosophila. The incidence of positive selection is higher for the seminal receptacle genes than Drosophila reproductive genes as a whole, but lower than genes associated with the spermatheca, a second type of Drosophila sperm storage organ. By identifying overrepresented classes of proteins and classes for which sperm storage function is suggested by the nature of the proteins, candidate genes were discovered. These candidates belong to protein classes such as muscle contraction, odorant binding and odorant receptor, protease inhibitor and immunity.

Original languageEnglish (US)
Pages (from-to)1386-1398
Number of pages13
JournalJournal of Evolutionary Biology
Issue number7
StatePublished - Jul 2010


  • Conflicts
  • Genomics
  • Insects
  • Molecular evolution
  • Population genetics
  • Sexual selection

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics


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