Maladies Infectieuses and Vecteurs: Ecologie, Génétique, Evolution and Contrôle (MIVEGEC, UMR 5290 CNRS-Universités Montpellier I and II-IRD; UR IRD 224), Campus IRD, 911 av. Agropolis, BP 64501, 34394 Montpellier Cedex 5, France.
Exp Appl Acarol. 2013 Feb;59(1-2):203-18. doi: 10.1007/s10493-012-9602-5. Epub 2012 Sep 4.
The southern cattle tick, Rhipicephalus microplus, is the ixodid species causing the largest economic losses in tropical agrosystems because of its recurrent invasive success, explosive demography on bovine herds, vector competence for diverse pathogens and frequent development of acaricide resistance. Its ecology and the physiological bases of the acaricide resistances it developed, as well as alternative tick control measures, have been intensively studied for decades. By contrast, the tick population genetic structure and its remarkable ability to quickly adapt to new environments have not yet received much attention. We investigated such issues using population genetics analyses in the recently invaded island New Caledonia. In this paper we aim to describe some guidelines for acarologists willing to investigate the processes at play in Acari invasions. Particular emphasis is given to the accuracy of sampling designs and sampling scales for population genetics to be actually informative on the demographical processes of the species (i.e., its mating rules, the determinants of population limits, population sizes, the relationships between genetic exchanges and geographical distances and relevant ecological factors).
南方牛蜱，Rhipicephalus microplus，是引起热带农业系统经济损失最大的革螨物种，因为它反复入侵成功、在牛群中爆发式繁殖、对多种病原体的媒介能力以及频繁产生杀螨剂抗性。几十年来，人们一直在深入研究其生态学和对杀螨剂产生抗性的生理基础，以及替代蜱控制措施。相比之下，蜱种群遗传结构及其快速适应新环境的显著能力尚未受到太多关注。我们使用最近入侵的新喀里多尼亚岛的种群遗传学分析来研究这些问题。在本文中，我们旨在为愿意研究节肢动物入侵过程的节肢动物学家描述一些指导方针。特别强调了种群遗传学采样设计和采样规模的准确性，以便实际提供有关物种的人口过程（即交配规则、种群极限的决定因素、种群规模、遗传交换与地理距离的关系以及相关的生态因素）的信息。
