Age, weight, and mating status of the male influence female choice and reproductive success in Tuta absoluta

IF 5.6 1区 农林科学 Q1 ENTOMOLOGY
Gleice Ane de S. Gonçalves, Khalid Haddi, Natália de S. Ribas, Kárenn Christiny P. Santos, Lucas Felipe P. Tschoeke, Eraldo Lima
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Abstract

Mate choice is a fundamental behavior of polyandrous insects, in which individuals prefer mates that exhibit characteristic traits of higher reproductive quality. Tuta absoluta (Meyrick 1917) is the main pest in tomato cultivation and is difficult to control. Pheromones-based strategies; including monitoring, mass trapping and mating disruption; are recommended within integrated pest management of this pest. However, significant losses in tomato production are still reported despite the effective capture of males suggesting a potential failure of the used pheromones-based technologies in the field. As this situation may be related to the sexual behavior of this species, this study aimed to investigate how male’s characteristics, such as body weight, mating status, and age, influence the reproductive behavior of T. absoluta females and thus understanding the reported efficacy losses. First, we conducted a set of tests in which females were allowed to choose between males of different weights, mating status, and age. The effects of mating with males presenting the most contrasting characteristics on the females, reproductive outputs and longevity were assessed. Our results show that females of T. absoluta prefer males with higher reproductive quality (young, virgin and heavy) and that the male’s body weight had a direct influence on the increased longevity and reproductive performance of females. Understanding the reproductive success of these insects can help develop more effective control technologies to better reduce losses in tomato production caused by this pest.
雄性的年龄、体重和交配状况影响雌性的选择和繁殖成功率
择偶是多雄性昆虫的一种基本行为,在这种行为中,个体偏好具有较高繁殖质量特征的配偶。Tuta absoluta(Meyrick 1917)是番茄种植中的主要害虫,很难控制。在对这种害虫进行虫害综合防治时,建议采用基于信息素的策略,包括监测、大规模诱捕和干扰交配。然而,尽管有效捕获了雄虫,但仍有报告称番茄生产遭受重大损失,这表明在田间使用的基于信息素的技术可能失败。由于这种情况可能与该物种的性行为有关,本研究旨在调查雄虫的特征(如体重、交配状况和年龄)如何影响 T. absoluta 雌虫的繁殖行为,从而了解所报告的药效损失。首先,我们进行了一组测试,让雌性在不同体重、交配状况和年龄的雄性之间进行选择。我们评估了与特征差异最大的雄性交配对雌性的影响、生殖产量和寿命。我们的结果表明,T. absoluta 的雌性更喜欢生殖质量较高的雄性(年轻、处女和体重大),雄性的体重直接影响到雌性寿命的延长和生殖能力的提高。了解这些昆虫的繁殖成功率有助于开发更有效的控制技术,从而更好地减少该害虫对番茄生产造成的损失。
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来源期刊
Entomologia Generalis
Entomologia Generalis 生物-昆虫学
CiteScore
7.10
自引率
18.80%
发文量
72
审稿时长
>12 weeks
期刊介绍: Its scope covers all aspects of basic and applied research dealing with insects and more broadly with arthropods inhabiting wild, agricultural and/or urban habitats. The journal also considers research integrating various disciplines and issues within the broad field of entomology and ecology. Entomologia Generalis publishes high quality research articles on advances in knowledge on the ecology and biology of arthropods, as well as on their importance for key ecosystems services, e.g. as biological control and pollination. The journal devotes special attention to contributions providing significant advances (i) on the fundamental knowledge and on sustainable control strategies of arthropod pests (including of stored products) and vectors of diseases, (ii) on the biology and ecology of beneficial arthropods, (iii) on the spread and impact of invasive pests, and (iv) on potential side effects of pest management methods. Entomologia Generalis welcomes review articles on significant developments in the field of entomology. These are usually invited by the editorial board, but proposals may be sent to the Editor-in-Chief for preliminary assessment by the editorial board before formal submission to the journal. The journal also considers comments on papers published in Entomologia Generalis, as well as short notes on topics that are of broader interest.
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