INFLUENCE OF ANTHROPISATION ON LOCAL VEGETATION AND TSETSE ABUNDANCE IN SOUTHERN BURKINA FASO
INFLUENCE OF ANTHROPISATION ON LOCAL VEGETATION AND TSETSE ABUNDANCE IN SOUTHERN BURKINA FASO
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DOI：
10.1051/parasite/2009161021
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发表时间：
2009-03-01
期刊：
影响因子：
2.9
通讯作者：
Solano, P.
中科院分区：
文献类型：
--
作者：
Rayaisse, J. B.;Courun, F.;Solano, P.
在布基纳法索南部科莫河沿岸的Folonzo进行了昆虫学和植物社会学调查。本次调查的目的是通过从河岸到大草原的横断面，比较保护区和非保护区采采树物种的密度和多样性。对所有诱捕地点进行了详细的植物学描述。昆虫学数据还与1980年在一些诱捕地点获得的数据进行了比较。植物地理研究表明，样带之间的植被具有很大的同质性，尤其是在森林廊道，而大草原则表现出更大的异质性。在该地区共捕获采采子4种，占采采量的74%、20%。亚莫西坦，4%冈比亚革兰氏菌和2%紫花革兰革兰氏菌。采摘密度在保护区和非保护区之间存在显著差异，平均而言，保护区的采采量是非保护区的4倍。这一差异是由于非保护区野生动物密度的减少所致，这种差异可以适用于这种采采子物种重要性下降的整个国家的情况。这是人类密度增加的后果之一，后者导致植物学物种组成的变化不那么明显。从旧的(1980年)和在河岸收集的新数据的比较中，我们看到了密度下降的总趋势，这对冈比亚的影响较小。
Entomological and phyto-sociological surveys were undertaken in Folonzo, southern Burkina Faso, along the Comoe river. The purpose of this survey was to compete densities and diversity of tsetse species in a protected versus a non protected area, by the mean of transects going from the river bank to the savannah. A detailed phytological description was made in all the trapping sites. The entomological data were also compared to what was obtained in 1980 in the some trapping sites. The phyto-geographical study showed great vegetation homogeneity between transects, particularly in the forest gallery, while savannah showed more heterogeneity. Four tsetse species were caught in the area, with 74 % G. tachinoides, 20 % G. rn. submorsitans, 4 % G. p. gambiensis and 2 % G. medicorum. There was a significant difference in tsetse densities between the protected and the non-protected area, with in average, four times more tsetse in the protected one. This difference was particularly high for G. m. submorsitans with a ratio of 1/9. This decrease was attributed to the reduction in wildlife density in the non protected area, and can be applied to the situation of the whole country where this tsetse species is of decreasing importance. It is one of the consequences of the increase in human densities, this latter causing much less visible changes in phytological species composition. From the comparison between old (1980) and new data collected on the river bank, we see a general trend of decrease in density, which affects less G. polpolis gambiensis.