Morphological and genetic variability within Aedes aegypti in Niakhar, Senegal

Autor: Cécile Brengues, Jean-Pierre Hervé, Frédéric Simard, Ousmane Ndiath, Céline Toty, Christophe Paupy
Přispěvatelé: Diversity, ecology, evolution & Adaptation of arthropod vectors (MIVEGEC-DEEVA), Evolution des Systèmes Vectoriels (ESV), Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud]), Institut de Recherche pour le Développement (IRD [France-Sud])-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut de Recherche pour le Développement (IRD [France-Sud])-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC), Institut de Recherche pour le Développement (IRD [France-Sud])-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut de Recherche pour le Développement (IRD [France-Sud])-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)
Rok vydání: 2009
Předmět:
Sympatry
Male
VARIATION SAISONNIERE
[SDV]Life Sciences [q-bio]
Population genetics
Subspecies
0302 clinical medicine
Aedes
CARACTERE MORPHOLOGIQUE
Cluster Analysis
ComputingMilieux_MISCELLANEOUS
0303 health sciences
education.field_of_study
biology
Ecology
FIEVRE JAUNE
Yellow fever
POLYMORPHISME INTRASPECIFIQUE
Senegal
GENOTYPE
STRUCTURE GENETIQUE
Infectious Diseases
MOUSTIQUE
Female
Microbiology (medical)
DENGUE
030231 tropical medicine
Population
Aedes aegypti
Microbiology
03 medical and health sciences
Genetics
medicine
Animals
Genetic variability
ARBOVIROSE
VARIABILITE GENETIQUE
education
Molecular Biology
Ecology
Evolution
Behavior and Systematics
030304 developmental biology
VECTEUR
fungi
Genetic Variation
Bayes Theorem
biology.organism_classification
medicine.disease
MARQUEUR MICROSATELLITE
Genetics
Population
Vector (epidemiology)
POLYMORPHISME GENETIQUE
Microsatellite Repeats
Zdroj: Infection, Genetics and Evolution
Infection, Genetics and Evolution, Elsevier, 2010, 10 (4), pp.473-480. ⟨10.1016/j.meegid.2010.03.001⟩
ISSN: 1567-7257
1567-1348
DOI: 10.1016/j.meegid.2010.03.001⟩
Popis: Aedes aegypti (Linné, 1762) is a major vector of arboviruses such as Yellow Fever, Dengue and Chikungunya. In Africa, where the species exhibits major variations in morphology, ecology, behavior and vector competence, two subspecies have been described: a light form, named Ae. aegypti aegypti (Aaa) with highly domestic and anthropophilic habits and a cosmotropical distribution; and a dark form, referred to as Ae. aegypti formosus (Aaf), which is endemic to Africa and thrives in sylvan environments. In East Africa, both forms were described to occur in sympatry whereas only Aaf was reported from Central/West Africa. However, recent findings suggest Aaa was also common in Senegal. Here, we report on a longitudinal survey of morphological and genetic variability of Ae. aegypti sampled in the rural environment of Niakhar, Senegal. In agreement with recent findings, most of specimens we analyzed were classified as Aaa suggesting typical Aaf was scarce in the studied area. Among Aaa, significant temporal variations in abdominal pale scales pattern were detected. Depending on the season and the nature of larval breeding places, the specimens (particularly females) tend to segregate in two main morphological groups. Microsatellite-based estimates of genetic differentiation did not provide any clear evidence that the two groups were genetically distinct. Overall, these results improve our understanding of the diversity of Ae. aegypti in West Africa, where data are crucially lacking.
Databáze: OpenAIRE
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