克氏锥虫-虫蝽相互作用的生殖后果及其与生存的权衡。

IF 3.6 3区 生物学 Q1 ZOOLOGY
Patricia A. Lobbia , Claudia Rodríguez , Carolina Remón , Mariana Manteca-Acosta
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引用次数: 0

摘要

人们对阿根廷南美锥虫病的主要传播媒介南美锥虫(Triatoma infestans)的适应性影响和生活史权衡知之甚少。以前的研究揭示了与发育、排泄和毒理学有关的一些成本或其可能的权衡,但都没有涉及对繁殖的影响。为了研究 T. cruzi 感染对 T. infestans 繁殖效率和存活率的影响,我们设置了四种处理方法:男女均未感染、男女均感染、雌性感染-雄性未感染和雌性未感染-雄性感染。在第三、第四和第五个若虫龄期诱导感染。记录了繁殖效率和寿命变量。我们的研究结果表明,感染克柔孢子虫提高了繁殖效率,降低了虫体的存活率。有一个或两个个体受到感染的配对中,产卵雌虫的交配和产卵比例更高,交配和产卵开始的时间更早,特定年龄的繁殖力明显更高。在繁殖力方面,受感染的雌性表现出更高的繁殖率,与雄性的感染状况无关。受感染的雄性和雌性寿命都有所缩短。这些发现突出表明,感染会显著改变蜱虫的繁殖效率-生存之间的权衡,其影响因男女感染状况的不同而不同,这表明这是一种复杂的相互作用,而不是简单的叠加效应。这种反应符合生殖补偿假说。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Reproductive consequences of the interaction Trypanosoma cruzi − Triatoma infestans and its trade-off with survival

Reproductive consequences of the interaction Trypanosoma cruzi − Triatoma infestans and its trade-off with survival

Relative little is known about fitness effects and life history trade-off of Trypanosoma cruzi in Triatoma infestans, the main vector of Chagas disease in Argentina. Previous studies revealed some costs related to development, excretion, and toxicology or their possible trade-offs, but none address effects on reproduction. To study the effect of T. cruzi infection on reproductive efficiency and survival of T. infestans we set up four treatments: both genders uninfected, both genders infected, female infected – males uninfected and female uninfected − males infected. The infection was induced during the third, fourth, and fifth nymphal instars. Reproductive efficiency and longevity variables were recorded. Our results showed that the infection by T. cruzi increased reproductive efficiency and reduced survival of T. infestans. Pairs where one or both individuals were infected presented a greater percentage copulation, of egg-laying females, the onset of copulation and oviposition occurred earlier, and age-specific fecundity was notably higher. Regarding fertility, infected females displayed higher rates irrespective of the infective status of the male counterpart. A reduction in longevity was observed in infected males and females. These findings highlighted that the infection significantly alters the trade-off reproductive efficiency-survival of T. infestans, with the impact differing according to the infection status of each gender, suggesting a complex interplay rather than a simple additive effect. This response corresponds to the reproductive compensation hypothesis.

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来源期刊
CiteScore
6.10
自引率
5.90%
发文量
94
审稿时长
1 months
期刊介绍: The Journal of Invertebrate Pathology presents original research articles and notes on the induction and pathogenesis of diseases of invertebrates, including the suppression of diseases in beneficial species, and the use of diseases in controlling undesirable species. In addition, the journal publishes the results of physiological, morphological, genetic, immunological and ecological studies as related to the etiologic agents of diseases of invertebrates. The Journal of Invertebrate Pathology is the adopted journal of the Society for Invertebrate Pathology, and is available to SIP members at a special reduced price.
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