Ecological Aspects of Tabanids (Diptera: Tabanidae) in a Gabonese Cattle Ranch

Ovono Mélodie Audrey Prisca, M. Franck, Z. C. Roland, K. A. Armel, S. Lendzele, Maroundou Audrey Pamela, Acapovi-Yao Genevieve Lydie, T. Lebel, S. Gustave, M. Bertrand, M. J. François
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Abstract

To embark on an anti-vectorial fight against mechanical vectors of animal trypanosomosis, investigations were undertaken in order to determine the abundance, species diversity and daily activity of tabanids in a cattle ranch in Gabon. The nzi and vavoua traps were used to catch tabanids in three divisions of this ranch. In this study, 616 tabanids were captured: 349 (56.66%) in Division 1, 226 (36.69%) in Division 2 and 41 (6.66%) in Division 3. In the first Division, T. taeniola was the most abundant species with an Apparent Density (ADT) of 2.2, followed by H. pluvialis (ADT = 1.05). In the second Division, H. pluvialis was most abundant with ADT of 1.6, followed by T. taeniola (ADT = 0.38). In the last Division, the most abundant species was H. pluvialis (ADT = 0.15). Comparing the relative abundance of catches with sites (Divisions), we realized that there was no statistically significant difference in catches with trapping sites. It was noticed that Division 3 recorded the highest diversity index values. We realized that the nzi trap recorded higher tabanid catches than the vavoua trap. The diurnal activity rhythm of the most frequent species encountered slightly differed with prospection sites.
加蓬牛牧场虻类(双翅目:虻科)的生态学特征
为了对动物锥虫病的机械病媒展开抗病媒斗争,在加蓬的一个养牛场开展了调查,以确定tabanids的数量、物种多样性和日常活动。在这个牧场的三个区使用了nzi和vavoua陷阱来捕捉tabanids。共捕获虻616只,其中1区349只(56.66%),2区226只(36.69%),3区41只(6.66%)。在第1区,带绦虫的表观密度(ADT)为2.2,是最丰富的物种,其次是雨蛾(ADT = 1.05)。在第2分区中,雨螨数量最多,ADT为1.6,其次是带iola, ADT为0.38。在最后一个分区中,最丰富的物种是雨杉(H. pluvialis) (ADT = 0.15)。通过对不同捕集点(分区)的相对丰度进行比较,发现不同捕集点的相对丰度无统计学差异。大家注意到,第3司的多样性指数最高。我们意识到nzi陷阱比vavoua陷阱捕获了更多的tabanid。最常见物种的日活动节律与勘探地点略有不同。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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