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Biology and dynamics of potential malaria vectors in Southern France.

Ponçon N, Toty C, L'Ambert G, Le Goff G, Brengues C, Schaffner F, Fontenille D - Malar. J. (2007)

Bottom Line: Anopheles hyrcanus and An. melanoon were present in summer, whereas An. atroparvus was present in autumn and winter.Based on an enzyme-linked immunosorbent assay, almost 90% of An. melanoon blood meals analysed had been taken on horse or bovine.Anopheles hyrcanus and An. melanoon parity rates showed huge variations according to the date and the trapping method.

View Article: PubMed Central - HTML - PubMed

Affiliation: Institut de Recherche pour le Développement, UR016, Caractérisation et Contrôle des Populations de Vecteurs, Montpellier cedex 5, France. poncon@mpl.ird.fr

ABSTRACT

Background: Malaria is a former endemic problem in the Camargue, South East France, an area from where very few recent data concerning Anopheles are available. A study was undertaken in 2005 to establish potential malaria vector biology and dynamics and evaluate the risk of malaria re-emergence.

Methods: Mosquitoes were collected in two study areas, from March to October 2005, one week every two weeks, using light traps+CO2, horse bait traps, human bait catch, and by collecting females in resting sites.

Results: Anopheles hyrcanus was the most abundant Anopheles species. Anopheles melanoon was less abundant, and Anopheles atroparvus and Anopheles algeriensis were rare. Anopheles hyrcanus and An. melanoon were present in summer, whereas An. atroparvus was present in autumn and winter. A large number of An. hyrcanus females was collected on humans, whereas almost exclusively animals attracted An. melanoon. Based on an enzyme-linked immunosorbent assay, almost 90% of An. melanoon blood meals analysed had been taken on horse or bovine. Anopheles hyrcanus and An. melanoon parity rates showed huge variations according to the date and the trapping method.

Conclusion: Anopheles hyrcanus seems to be the only Culicidae likely to play a role in malaria transmission in the Camargue, as it is abundant and anthropophilic.

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Related in: MedlinePlus

Seasonal dynamics of Anopheles melanoon, Anopheles hyrcanus and Anopheles algeriensis at Marais du Vigueirat in 2005 (eight traps).
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Figure 3: Seasonal dynamics of Anopheles melanoon, Anopheles hyrcanus and Anopheles algeriensis at Marais du Vigueirat in 2005 (eight traps).

Mentions: Dynamics of An. hyrcanus, An. melanoon and An. algeriensis based on light traps are presented in Figures 2 and 3, for each study area. Results show the mean number of mosquitoes collected in the area from the eight traps per night. The number of An. atroparvus collected by light traps or in resting sites was low and mosquitoes were mainly captured between August and November.


Biology and dynamics of potential malaria vectors in Southern France.

Ponçon N, Toty C, L'Ambert G, Le Goff G, Brengues C, Schaffner F, Fontenille D - Malar. J. (2007)

Seasonal dynamics of Anopheles melanoon, Anopheles hyrcanus and Anopheles algeriensis at Marais du Vigueirat in 2005 (eight traps).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC1808464&req=5

Figure 3: Seasonal dynamics of Anopheles melanoon, Anopheles hyrcanus and Anopheles algeriensis at Marais du Vigueirat in 2005 (eight traps).
Mentions: Dynamics of An. hyrcanus, An. melanoon and An. algeriensis based on light traps are presented in Figures 2 and 3, for each study area. Results show the mean number of mosquitoes collected in the area from the eight traps per night. The number of An. atroparvus collected by light traps or in resting sites was low and mosquitoes were mainly captured between August and November.

Bottom Line: Anopheles hyrcanus and An. melanoon were present in summer, whereas An. atroparvus was present in autumn and winter.Based on an enzyme-linked immunosorbent assay, almost 90% of An. melanoon blood meals analysed had been taken on horse or bovine.Anopheles hyrcanus and An. melanoon parity rates showed huge variations according to the date and the trapping method.

View Article: PubMed Central - HTML - PubMed

Affiliation: Institut de Recherche pour le Développement, UR016, Caractérisation et Contrôle des Populations de Vecteurs, Montpellier cedex 5, France. poncon@mpl.ird.fr

ABSTRACT

Background: Malaria is a former endemic problem in the Camargue, South East France, an area from where very few recent data concerning Anopheles are available. A study was undertaken in 2005 to establish potential malaria vector biology and dynamics and evaluate the risk of malaria re-emergence.

Methods: Mosquitoes were collected in two study areas, from March to October 2005, one week every two weeks, using light traps+CO2, horse bait traps, human bait catch, and by collecting females in resting sites.

Results: Anopheles hyrcanus was the most abundant Anopheles species. Anopheles melanoon was less abundant, and Anopheles atroparvus and Anopheles algeriensis were rare. Anopheles hyrcanus and An. melanoon were present in summer, whereas An. atroparvus was present in autumn and winter. A large number of An. hyrcanus females was collected on humans, whereas almost exclusively animals attracted An. melanoon. Based on an enzyme-linked immunosorbent assay, almost 90% of An. melanoon blood meals analysed had been taken on horse or bovine. Anopheles hyrcanus and An. melanoon parity rates showed huge variations according to the date and the trapping method.

Conclusion: Anopheles hyrcanus seems to be the only Culicidae likely to play a role in malaria transmission in the Camargue, as it is abundant and anthropophilic.

Show MeSH
Related in: MedlinePlus