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首页> 外文期刊>African Entomology >Infestation of Heteropsylla cubana (Hemiptera: Psylloidea) on Leucaena leucocephala (Fabaceae: Mimosoideae) in Cameroon
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Infestation of Heteropsylla cubana (Hemiptera: Psylloidea) on Leucaena leucocephala (Fabaceae: Mimosoideae) in Cameroon

机译：白脑头畸形的Heteropsylla kopana（Chemiptera：Psylloida）感染

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摘要

Leucaena leucocephala (Fabaceae: Mimosoideae), originating from Central America, was introduced into Cameroon in the 1960s as a shade tree and for soil improvement. The tree is strongly infested by Heteropsylla cubana (Hemiptera: Psyllidae), also native to Central America. The purpose of this study is to record the presence of the psyllid in Cameroon, and assess its infestation pattern in order to provide the necessary data for an integrated pest management strategy. Data were collected at two sites,Koutaba (Western Highlands) and Yaounde (Southern Plateau), respectively, with three plots (Kl, K2, K3) at the former site and one (Y) at the latter. The relative abundance of psyllids varied significantly between the four plots (K = 97.6, d.f. = 3, P <0.0001). The Yaounde plot with a mean of 4013.71 individuals/100 leaves was more infested than any of those in Koutaba (with 1888.10, 314.60 and 2546.92 individuals/100 leaves, respectively). At both sites, the spatial distribution of psyllid populations globally followed an aggregated pattern with the dispersion index k ranging from 0.082 to 5.32. The infestation rate observed was influenced by plot age rather than climatic factors. In fact, the Yaounde plot was. younger than those in Koutaba.
机译：起源于中美洲的银合欢（Fabaceae：Mimosoideae）在1960年代被引入喀麦隆作为遮荫树并用于土壤改良。这棵树受到同样起源于中美洲的古巴杂种菊（Heteropsylla cubana）（半翅目：Psyllidae）的强烈侵害。这项研究的目的是记录喀麦隆中木虱的存在，并评估其侵染模式，以便为虫害综合防治策略提供必要的数据。分别在Koutaba（西部高地）和Yaounde（南高原）两个地点收集了数据，前者在三个地点（K1，K2，K3），后者在一个地点（Y）。木虱的相对丰度在四个图之间有显着差异（K = 97.6，d.f。= 3，P <0.0001）。雅温得地块的平均虫害数为4013.71个人/ 100叶，比库塔巴地区的虫害更为严重（分别为1888.10、314.60和2546.92个人/ 100叶）。在这两个地点，全球木虱种群的空间分布遵循聚集模式，色散指数k为0.082至5.32。观察到的侵染率受地块年龄的影响，而不是气候因素的影响。实际上，雅温得阴谋是。比Koutaba的年轻。

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