巴西亚诺马米土著环境影响区盘尾丝虫病媒介蝇蚋和盘尾丝虫病媒介蝇蚋的性嵌合和致畸

IF 1.7 3区 农林科学 Q2 ENTOMOLOGY
Raquel de Andrade-Cesário, Arion Túlio Aranda, Óscar Sánchez Molina, Érika Silva do Nascimento-Carvalho, Marilza Maia-Herzog
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引用次数: 0

摘要

拟蝇科成员的性嵌合现象在世界各地都有低频率的发现。这些表型表达在任何天然昆虫种群中都是非常少量的,可能是由于固有的个体形成因素,如激素或外部因素,即环境污染和寄生,这两者都可以破坏性分化发育过程。本研究评估了巴西于2013年、2014年、2017年和2021年在雅诺马米土著土地上对地方性盘尾丝虫病进行关注的结果采集的拟蝇科标本。一些标本表现出包括性镶嵌和致畸表型的形态学改变。共观察到3个猕猴(Simulium guianense Wise, 1911 s.l.)和3个猕猴(S. incrustatum Lutz, 1910 s.l.)表现出明显的性异常,其中2个为致畸性。未发现被线虫寄生的标本。提供了每个标本的详细形态学描述。这项研究表明,评估和监测采样区域的环境毒性以及异常标本与汞环境污染之间的潜在关联的重要性,因为所有标本都是在采矿影响地区发现的。这是巴西拟蝇科标本有性嵌合和畸形的首次记录。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Sexual Mosaicism and Teratogenesis in Simulium guianense s.l. and S. incrustatum s.l. (Diptera: Simuliidae), Onchocerciasis vectors, from Environmentally Impacted Areas in the Yanomami Indigenous Land, Brazil.

Sexual mosaics in Simuliidae members have been detected at low frequencies in various locations worldwide. These phenotypic expressions are expected in very small amounts in any natural insect population and may result from inherent individual formation factors, such as hormonal or external elements, i.e., environmental pollution and parasitism, both of which can disrupt sexual differentiation development processes. This study assessed a Simuliidae collection sampled as a result of the Brazilian focus on endemic onchocerciasis in the Yanomami Indigenous Land in 2013, 2014, 2017, and 2021. Some specimens exhibited morphological alterations comprising sexual mosaic and teratogenicity phenotypes. In total, three Simulium guianense Wise, 1911 s.l. and three S. incrustatum Lutz, 1910 s.l. specimens presenting significant sexual anomalies were observed, two of which were teratogenic. No specimens were found parasitized by nematodes. A detailed morphological description of each specimen is provided. This study suggests the importance of assessing and monitoring the environmental toxicity of the sampling area and potential associations between anomalous specimens and environmental pollution by mercury, as all specimens were found in mining-impacted areas. This is the first record of sexual mosaic and teratogeny in Simuliidae specimens from Brazil.

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来源期刊
Neotropical Entomology
Neotropical Entomology 生物-昆虫学
CiteScore
3.30
自引率
5.60%
发文量
69
审稿时长
6-12 weeks
期刊介绍: Neotropical Entomology is a bimonthly journal, edited by the Sociedade Entomológica do Brasil (Entomological Society of Brazil) that publishes original articles produced by Brazilian and international experts in several subspecialties of entomology. These include bionomics, systematics, morphology, physiology, behavior, ecology, biological control, crop protection and acarology.
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