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Male sex pheromones and the phylogeographic structure of the lutzomyia longipalpis species complex (diptera: psychodidae) from Brazil and Venezuela

Watts, Phillip C.; Hamilton, J. Gordon C.; Ward, Richard D.; Noyes, Harry A.; Souza, Nataly A.; Kemp, Stephen J.; Feliciangeli, M. Dora; 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 (r2 < 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:Article
Additional Information:Issue: October 2005
Uncontrolled Keywords:VISCERAL LEISHMANIASIS; GENETIC-VARIABILITY; CUTANEOUS LEISHMANIASIS; PROPOSED STRUCTURE; PERIOD GENE; POPULATIONS; SANDFLIES; 9-METHYLGERMACRENE-B; DIVERGENCE; STATE
Subjects:Q Science > QH Natural history > QH301 Biology
Q Science > QH Natural history > QH426 Genetics
Departments, Research Centres and Related Units:Academic Faculties, Institutes and Research Centres > Faculty of Science > Department of Biological Sciences
Related URLs:
Refereed:Yes
Status:Published
ID Code:233
Deposited On:12 Aug 2008 09:53
Last Modified:28 Feb 2012 10:06

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