The evolutionary history of Drosophila buzzatii XXVII - Thorax length is positively correlated with longevity in a natural population from Argentina

Esteban Hasson, Juan J. Fanara, Constantina Rodriguez, Juan C. Vilardi, Osvaldo A. Reig, Antonio Fontdevila

Research output: Contribution to journalArticleResearchpeer-review

38 Citations (Scopus)

Abstract

The correlation between body size and longevity was tested in an Argentinian natural population of Drosophila buzzatii. Mean thorax length of flies newly emerging from rotting cladodes of Opuntia vulgaris was significantly smaller than that of two samples of flies caught at baits. The present results which might be interpreted as directional selection for longevity favoring larger flies are in agreement with previous results achieved in a Spanish natural population of D. buzzatii. Flies emerging from different substrates showed significant differences in thorax length, suggesting that an important fraction of phenotypic variance can be attributed to environmental variability. However, laboratory and field work in different populations of D. buzzatii showed a significant genetic component for thorax length variation. © 1993 Kluwer Academic Publishers.
Original languageEnglish
Pages (from-to)61-65
JournalGenetica
Volume92
Issue number1
DOIs
Publication statusPublished - 1 Jan 1993

Keywords

  • Drosophila buzzatii
  • life history traits
  • longevity
  • natural selection
  • thorax length

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