Landscape, population structure and genetic diversity of Stomoxys calcitrans

• Published in: Parasite (Paris) Vol. 16; no. 1; pp. 37 - 41
• Main Authors: Dsouli Aymes, N., Mavoungou, J.F., De Stordeur, E., Duvallet, G.
• Format: Journal Article
• Language: English
• Published: Paris EDP Sciences 01.03.2009; Princeps
• Subjects: AFLP; Animals; Biological and medical sciences; Diptera; Female; France; Fundamental and applied biological sciences. Psychology; Gabon; Gene Flow; Genetic Variation; Genetics, Population; Geography; génétique des populations; landscape ecology; Life Sciences; Male; Medically important nuisances and vectors, pests of stored products and materials: population survey and control; Muscidae - genetics; Muscidae - growth & development; paysage; Polymorphism, Restriction Fragment Length - genetics; population genetics; Stomoxys calcitrans; Vectors. Intermediate hosts; écologie; Gabon; France; Europe; Africa; Muscidae; Landscape; Insecta; Parasite; Population structure; Genetic diversity; Population genetics; Mycoparasite; Stomoxys calcitrans; Arthropoda; Ectoparasite; Invertebrata; Amplified fragment length polymorphism marker; Vector; Diptera; Comparative study; Geographical variation; Anthropogenic factor
• ISSN: 1252-607X; 1776-1042
• DOI: 10.1051/parasite/2009161037

To investigate whether different landscapes could affect genetic diversity and structure of the cosmopolitan diptera Stomoxys calcitrans, populations from Gabon and southern France were studied using dominant amplified fragment length polymorphism (AFLP) markers. Gabon is characterized by a forested closed landscape, and southern France by an open Mediterranean landscape. The genetic diversity between Gabon and France populations did not differ significantly (P > 0.05). Contrary to our expectation, this study shows a moderate level of genetic differentiation between these two distant countries (Fst = 0.0979) and a low genetic structure among Gabonese and French populations (Fst = 0.0291 and 0.0275 respectively). This result could indicate the capacities of S. calcitrans populations to sustain a high level of gene flow, despite geographic distance and isolation. Pour étudier l’impact du paysage sur la diversité génétique et la structure des populations de Stomoxys calcitrans, diptère cosmopolite, des populations du Gabon et du sud de la France ont été étudiées en utilisant des marqueurs AFLP (amplified fragment length polymorphism). Le Gabon est caractérisé par une forêt équatoriale, correspondant à un paysage fermé, alors que la zone d’étude dans le sud de la France correspond à un paysage largement ouvert. La diversité génétique entre les populations du Gabon et de France n’a pas montré de différence significative (P > 0,05). Contrairement à notre attente, cette étude a montré une différenciation génétique modérée entre les deux pays (Fst = 0.0979) et une structuration génétique faible au sein des populations du Gabon et de France (Fst = 0.0291 et 0.0275 respectivement). Ces résultats semblent indiquer la capacité des populations de S. calcitrans à maintenir un flux de gènes élevé, en dépit de la distance géographique et de l’isolement.