污染对阿拉伯按蚊Patton,1905和致倦库蚊Say,1823竞争动态的影响(直翅目:库蚊科)

IF 1.2 4区 农林科学 Q3 ENTOMOLOGY African Entomology Pub Date : 2023-05-10 DOI:10.17159/2254-8854/2023/a10656
Alexander Csn Jeanrenraud, B. D. Letinić, Jean Mollett, B. Brooke, S. Oliver
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引用次数: 1

摘要

致倦库蚊Say,1823和阿拉伯按蚊Patton,1905(直翅目:库蚊科)经常在同一水源中繁殖,并参与种间竞争。尽管已知致倦库蚊在一系列污染环境中增殖,但阿拉伯安在污染水中增殖的能力直到最近才被报道。污染和杀虫剂抗性对这种竞争性相互作用的影响尚不清楚。本研究考察了污染对种间竞争动态的影响。本研究使用了三种实验室菌株:一种对杀虫剂敏感和抗药性的阿拉伯安,以及一种抗药性的致倦库蚊。通过确定50%死亡率下的致死浓度(LC50)来评估和比较每种菌株的幼虫污染物耐受性。每个菌株的幼虫都暴露在无机肥料或硝酸铜中,然后评估羽化成功率。结果表明,在无竞争的污染条件下饲养的抗药性菌株羽化率较高,其中致倦库蚊羽化率最高。该物种对金属污染的耐受性也高于阿拉伯菌株。考察了污染物对产卵选择的影响。污染改变了成虫产卵的选择。幼虫金属暴露对代谢解毒酶活性的影响各不相同。杀虫剂抗性表型对污染物具有更大的耐受性,并且可能基于对污染物的可变解毒反应而具有发育优势。因此,污染可以改变疟疾媒介阿拉伯按蚊和致倦库蚊之间的种间竞争动态。
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The effect of pollution on the competitive dynamics of Anopheles arabiensis Patton, 1905 and Culex quinquefasciatus Say, 1823 (Diptera: Culicidae)
Culex quinquefasciatus Say, 1823 and Anopheles arabiensis Patton, 1905 (Diptera: Culicidae) are often found breeding in the same water sources and engage in interspecific competition. Although Cx. quinquefasciatus is known to proliferate in a range of polluted environments, the ability of An. arabiensis to proliferate in polluted water has only been reported relatively recently. The effects of pollution and insecticide resistance on this competitive interaction are unknown. This study examined the effect of pollution on the dynamics of the interspecific competition. Three laboratory strains were used in this study: an insecticide susceptible and an insecticide resistant An. arabiensis, and an insecticide resistant Cx. quinquefasciatus. Larval pollutant tolerances of each strain were assessed and compared by determining the lethal concentration at 50% mortality (LC50). The larvae from each strain were exposed to either inorganic fertiliser or copper nitrate, following which eclosion success was assessed. The results showed that the insecticide resistant strains had higher emergence rates when reared in polluted conditions without competition, with the Cx. quinquefasciatus strain showing the highest rate of eclosion. This species also had a higher tolerance for metal pollution than the An. arabiensis strains. The effects of pollutants on oviposition choice were examined. Pollution altered adult oviposition choice. The effect of larval metal exposure had variable effects on the activity of metabolic detoxification enzymes. An insecticide resistant phenotype had greater tolerance to pollutants and possibly developmental advantages based on a variable detoxification response to the pollutant. Pollution can therefore alter interspecific competition dynamics between the malaria vector An. arabiensis and Cx. quinquefasciatus. 
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来源期刊
African Entomology
African Entomology 生物-昆虫学
CiteScore
2.00
自引率
0.00%
发文量
17
审稿时长
6-12 weeks
期刊介绍: African Entomology (ISSN 1021-3589 – print / 2224-8854 – online) replaced the old Journal of the Entomological Society of Southern Africa in 1993. A single volume consisting of two issues (March and September) is published annually. The journal is indexed in all major abstracting journals African Entomology is a peer reviewed scientific journal that publishes original research articles and short communications on all aspects of entomology, with an emphasis on the advancement of entomology on the African continent.
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