IEGEBA   24053
INSTITUTO DE ECOLOGIA, GENETICA Y EVOLUCION DE BUENOS AIRES
Unidad Ejecutora - UE
artículos
Título:
Oviposition Site Preference for Natural Breeding Sites in Drosophila melanogaster (Diptera: Drosophilidae) Populations from Argentina
Autor/es:
BETTI M.; SOTO E.M.; HASSON E.
Revista:
ANNALS OF THE ENTOMOLOGYCAL SOCIETY OF AMERICA
Editorial:
ENTOMOLOGICAL SOC AMER
Referencias:
Lugar: Lanham; Año: 2014 vol. 107 p. 944 - 953
ISSN:
0013-8746
Resumen:
Maternal decisions, like the choice of a site for laying eggs, have important ecological
and evolutionary implications. In the current study,weinvestigated variation both within and between
populations in oviposition site preference (OSP) in a collection of isofemale lines derived from three
Drosophila melanogaster Meigen natural populations of western Argentina. In the oviposition preference
assay, we used two resources that fruit ßies use as egg-laying sites in nature. Results revealed
1) the distribution of eggs across the two alternative resources offered to the ßies deviated from
random when ßies were given the chance to choose between grape and orange, 2) OSP varied within
and between populations, and 3) a substantial proportion of OSP variation has a genetic basis as
suggested by the signiÞcant contribution of variation among lines to total trait variance. Our survey
represents an initial step in understanding patterns of natural variation in oviposition preferences for
natural resources in D. melanogaster.