Male sex pheromones and the phylogeographic structure of the Lutzomyia longipalpis species complex (Diptera: Psychodidae) from Brazil and Venezuela

Watts, Phillip C. and Hamilton, J. Gordon C. and Ward, Richard D. and Noyes, Harry A. and Souza, Nataly A. and Kemp, Stephen J. and Feliciangeli, M. Dora and Brazil, Reginaldo and Maingon, Rhayza D.C. (2005) Male sex pheromones and the phylogeographic structure of the Lutzomyia longipalpis species complex (Diptera: Psychodidae) from Brazil and Venezuela. American Journal of Tropical Medicine and Hygiene, 73 (4). pp. 734-743. ISSN 0002-9637

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Abstract

Lutzomyia longipalpis, a sibling complex, is the main vector of Leishmania chagasi/infantum. Discriminating between siblings is important as they may differ in vectorial capacity. Lutzomyia longipalpis populations display distinct male sex pheromone chemotypes. We investigated the phylogeographic pattern of variation at microsatellite loci from 11 populations from Brazil and Venezuela related to their male pheromone. Temporal genetic differentiation was mostly not significant at the same site. Spatial genetic differentiation was, however, strong, although there was only a weak relationship between genetic differentiation and the geographic distance separating the samples (r 2 < 0.10); geographic separation explained a much greater (54-97%) percentage of the genetic differences among populations when samples with the same pheromone type were analyzed separately. A cluster analysis showed five groups: Lu. cruzi (Brazil) and Lu. pseudolongipalpis (Venezuela) as separate species, two (mostly 9-methyl-germacrene-B) Venezuelan and Brazilian groups, and a very distinct cluster of Brazilian cembrene populations.

Item Type:
Journal Article
Journal or Publication Title:
American Journal of Tropical Medicine and Hygiene
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2400/2406
Subjects:
ID Code:
137191
Deposited By:
Deposited On:
30 Sep 2019 22:20
Refereed?:
Yes
Published?:
Published
Last Modified:
20 Oct 2020 07:45