首页> 外文期刊>PLOS Neglected Tropical Diseases >Sterile Insects to Enhance Agricultural Development: The Case of Sustainable Tsetse Eradication on Unguja Island, Zanzibar, Using an Area-Wide Integrated Pest Management Approach
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Sterile Insects to Enhance Agricultural Development: The Case of Sustainable Tsetse Eradication on Unguja Island, Zanzibar, Using an Area-Wide Integrated Pest Management Approach

机译:促进农业发展的不育昆虫:使用区域性综合虫害管理方法在桑给巴尔的恩古贾岛进行可持续的采采蝇消灭的案例

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In 1908, African animal trypanosomosis (AAT) was first reported on the island of Unguja (Zanzibar), but circumstantial evidence of its presence is reported as far back as 1880 [1]. There are no reports of the presence of human African trypanosomosis (HAT). Tsetse are vectors of trypanosomes, and Glossina austeni Newstead was only discovered in 1945 on Unguja Island, which is a testimony to its elusive behaviour. Subsequent surveys demonstrated that G. austeni was the only species present, widespread over the island but more abundant in the thickets of the eastern part of the island [1]. The annual losses due to the disease, in terms of meat and milk production, mortality of calves, cost of disease control, and the importation of animals to satisfy the demand for protein, were estimated at 2 million USD [2]. Screening of cattle showed an overall trypanosomosis infection rate of 17%, being predominantly Trypanosoma congolense and to a lesser extent T. vivax. Local infection rates at the herd level could be as high as 46% (Supporting Information S1). Therefore, the Government of Tanzania requested assistance from the International Atomic Energy Agency (IAEA) in 1983 to assess whether the sterile insect technique (SIT) could be integrated with other proposed control tactics for the eradication of G. austeni from Unguja Island. A colony was initiated at the Tsetse and Trypanosomiasis Research Institute (TTRI) (now the Vector and Vector-Borne Diseases Research Institute), located in Tanga on the mainland of Tanzania, from pupae collected in the Jozani forest (now the Jozani-Chwaka Bay National Park). Flies were originally maintained on goats and rabbits, but the in vitro feeding technique was introduced in 1984 [3]. By mid-1990, the colony had reached a size of 40,000 females, and pilot release studies were implemented that confirmed the feasibility of transporting and deploying sterile males on the island.
机译:1908年,非洲动物锥虫病(AAT)首次在Unguja(桑给巴尔)岛上报道,但据报道有其存在的间接证据可追溯到1880年[1]。没有关于人类非洲锥虫病(HAT)存在的报道。采采蝇是锥虫体的载体,而格氏娜(Glossina austeni Newstead)才于1945年在Unguja岛上发现,这证明了它的行为难以捉摸。随后的调查表明,仅存在G. austeni的物种,在该岛上广泛分布,但在该岛东部的灌木丛中更为丰富[1]。该疾病每年造成的损失包括肉类和奶类生产,犊牛死亡率,疾病控制成本以及为满足蛋白质需求而进口的动物,估计为200万美元[2]。牛的筛查显示总体锥虫病感染率为17%,主要是锥虫锥虫,间日疟原虫的感染程度较小。在畜群一级的局部感染率可能高达46%(支持信息S1)。因此,坦桑尼亚政府在1983年请求国际原子能机构(IAEA)的援助,以评估无菌昆虫技术(SIT)是否可以与其他拟议的从Unguja岛消灭G. austeni的控制策略相结合。位于坦桑尼亚大陆坦Tang的采采蝇和锥虫病研究所(TT​​RI)(现为媒介和媒介-传染病传染病研究所)发起了一个殖民地,该种群来自于乔扎尼森林(现为乔扎尼-楚瓦卡湾)中收集的p国家公园)。蝇原本是养在山羊和兔子身上的,但1984年引入了体外喂养技术[3]。到1990年中期,该殖民地的雌性已达到40,000人,并进行了试点释放研究,证实了在该岛上运输和部署不育雄性的可行性。

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