Ebhodaghe Faith, Billah Maxwell Kelvin, Adabie-Gomez Delphina, Yahaya Adam
African Regional Postgraduate Programme in Insect Science, West-African Sub-Regional Centre, University of Ghana Legon, Accra, Ghana.
Department of Animal Biology and Conservation Science, University of Ghana Legon, Accra, Ghana.
BMC Res Notes. 2017 Dec 29;10(1):778. doi: 10.1186/s13104-017-3113-8.
This study aimed to identify isolated population(s) of Glossina palpalis in Ghana using geometric morphometrics to evaluate variations in wing-shape and size between populations of the fly from three regions.
Wing shape of G. palpalis tsetse flies from the Northern, Western and Eastern Regions varied significantly between each other. Populations from the Northern and Western Regions varied the most (Mahalanobis Distance = 54.20). The least variation was noticed between populations from the Western and Eastern Regions (MD = 1.99). On morphospace, the Northern population clearly separated from the Eastern and Western populations both of which overlapped. Wing centroid size also significantly varied among populations. Reclassification scores were satisfactory reaching 100% for the Northern population. The Northern population of G. palpalis is possibly isolated from the Western and Eastern Region populations. Meanwhile, a panmictic relationship could be on-going between the Western and Eastern populations. We speculate that geographical distance and subspecific difference between populations are among factors responsible for observed pattern of wing shape variations among the studied populations. The implications of results regarding choice of control strategy and limitations of the study are discussed.
本研究旨在利用几何形态测量学确定加纳孤立的须舌蝇种群，以评估来自三个地区的该蝇种群之间翅形和大小的差异。
来自北部、西部和东部地区的须舌蝇的翅形在彼此之间存在显著差异。北部和西部地区的种群差异最大（马氏距离=54.20）。西部地区和东部地区的种群之间差异最小（马氏距离=1.99）。在形态空间上，北部种群与东部和西部种群明显分离，而后两者相互重叠。翅质心大小在种群之间也存在显著差异。重新分类得分令人满意，北部种群达到了100%。须舌蝇的北部种群可能与西部和东部地区的种群隔离。与此同时，西部和东部种群之间可能存在随机交配关系。我们推测，种群之间的地理距离和亚种差异是导致所研究种群中观察到的翅形变化模式的因素之一。讨论了结果对控制策略选择的影响以及本研究的局限性。
