Species composition and abundance of mosquitoes of a tropical irrigation ecosystem

Animal Research International Pub Date : 2009-12-08 DOI:10.4314/ARI.V5I2.48748

V. Oguoma, O. O. Ikpeze

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引用次数: 22

Abstract

Exophagic-anthropophilic mosquitoes were collected during the April 2007-January 2008 planting season in four designated milet and guinea-corn irrigaton fields sampled in Gezawa Agro-ecological Zone of North-central Nigeria. Gezawa-1, Gezawa-2, Ketawa and Jogana irrigaton fieldscontributed about 31.2 %, 24.8 %, 22.8 % and 21.2% respectvely, to the number of mosquito species collected in the zone. There was preponderance of Anopheles gambiae complex (20.7 %) over Culex quinquefasciatus (11.8 %), C. pipiens fatigans (9.0%), A. funestus complex (7.0 %), Aedes aegypti (6.9%), A. albopictus (6.6 %), C. ppiens pipiens (5.7 %). C tigripes (5.0%), A. pharoensis (3.7 %), A africanus (3.6%), A. taylori (3.4%), A. coustani (3.3 %), A. luteocephalus (2.9 %), A. vittatus (2.8 %), A. rhodesiensis (2.1 %) Mansona (2.0 %) A. simpsoni (1.9 %) and Psorophora species (1.6 %). A Shannon-Wiener and Simpson’s diversity values of 1.1431 and 0.0925 were recorded for the mosquito species in Gezawa Agricultural Zone. A. gambiae had the highest Shannon-wiener diversity and Simpson’s dominance indces of 0.1415 and 0.0427 respectively. There was no significant difference between species diversity for the four irrigation fields (P>0.001). Vector control mustbe carried out in the irrigation fields to reduce the number ofthese out-door biting mosquitoes, since total reliance on ACTs and ITNs could not offer full protection against malaria to farmers in Gezawa irrigation fields. Keywords: Mosquitoes, Composition, Diversity, Dominance, Tropical ecosystem, Irrigation

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热带灌溉生态系统蚊子种类组成及丰度

在2007年4月至2008年1月的种植季节，在尼日利亚中北部Gezawa农业生态区四个指定的谷子和几内亚玉米灌溉区采集了嗜食人类的蚊子。格扎瓦1号、格扎瓦2号、克塔瓦和乔加纳灌区分别占捕获蚊种总数的31.2%、24.8%、22.8%和21.2%。冈比亚按蚊复合体(20.7%)优势于致倦库蚊(11.8%)、疲劳库蚊(9.0%)、富氏按蚊复合体(7.0%)、埃及伊蚊(6.9%)、白纹伊蚊(6.6%)、淡纹伊蚊(5.7%)。tigripes(5.0%)、A. pharoensis(3.7%)、A. africanus(3.6%)、A. taylori(3.4%)、A. coustani(3.3%)、A. luteocephalus(2.9%)、A. vittatus(2.8%)、A. rhodesiensis(2.1%)、Mansona(2.0%)、A. simpsoni(1.9%)和Psorophora种(1.6%)。Gezawa农业区蚊种的Shannon-Wiener和Simpson多样性值分别为1.1431和0.0925。冈比亚芽孢杆菌的Shannon-wiener多样性指数和Simpson优势度指数最高，分别为0.1415和0.0427。4个灌区间物种多样性差异不显著(P>0.001)。必须在灌溉区进行病媒控制，以减少这些户外叮咬蚊子的数量，因为完全依赖以青蒿素为基础的联合疗法和杀虫剂不能为Gezawa灌溉区的农民提供充分的疟疾保护。关键词:蚊子，组成，多样性，优势，热带生态系统，灌溉

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Animal Research International

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