杂食性捕食螨的早期饮食结构和个体觅食龛位

IF 5.6 1区农林科学 Q1 ENTOMOLOGY

Entomologia Generalis Pub Date : 2024-09-05 DOI:10.1127/entomologia/2024/2527

Thi Hanh Nguyen, Peter Schausberger

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引用次数: 0

摘要

联合考虑个体生态位专业化和动物个性的观点，可以预测个性表达和实现生态位利用的共同变异。动物个性的特点是个体内部的一致性与个体间在不同时间和环境下行为的一致性相关联。个体生态位专业化认为，地方群体成员的觅食表型应该多样化，以缓解个体间的竞争和随之而来的冲突。在这里，我们对杂食性植物栖息捕食螨 Amblyseius swirskii 早期生活经历塑造个体觅食生态位和个性表达的假设进行了检验。为此，我们让捕食螨雌螨在生命早期摄入三种食物（花粉、蜘蛛螨或蓟马）之一或不摄入食物（对照组），然后评估成年雌螨在探索、活动和攻击性方面的平均性状表达和个性。性格的形成通过类内相关系数（ICC）进行分析。捕食者在所有三个行为维度上都表现出个性，但个性的形成和饮食偏好受早期饮食经验的影响很大。探索型人格类型对适应性有预测作用，探索型人格类型产卵更多。蓟马经验对所测性状的影响最大，蓟马经验人格类型与个体觅食壁龛有关。总体而言，早年的饮食经历在个体水平上引起的性状表达变化比在群体水平上更大。我们的研究结果突出表明，生命早期短暂的个人经历是群体内精细表型结构和多样性的重要决定因素，并证明了环境诱导个体化生态位利用与人格形成之间的联系。

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Early-life diet experience structures personalities and individual foraging niches of omnivorous predatory mites

Joint consideration of the ideas of individual niche specialization and animal personalities predicts co-variation in personality expression and realized niche use. Animal personalities are characterized by within-individual consistency linked to consistent among-individual variation in behavior across time and contexts. Individual niche specialization posits that members of local groups should diversify in their foraging phenotypes to alleviate inter-individual competition and ensuing conflicts. Here, we tested the hypothesis that early life experiences shape individual foraging niches and personality expression in the omnivorous plant-inhabiting predatory mite Amblyseius swirskii. To this end, we exposed predatory mite females in their early life phase to one of three diets (pollen, spider mites or thrips) or no food (control) and later evaluated the adult females’ mean trait expressions and personalities in exploration, activity and aggressiveness. Personality formation was analyzed by intraclass correlation coefficients (ICC). The predators showed personalities in all three behavioral dimensions but personality formation and diet preference were strongly influenced by early-life diet experiences. Personality types in exploration were predictive of fitness, with more exploratory personalities producing more eggs. Thrips experience had the strongest impact across measured traits and thrips-experienced personality types were linked to individual foraging niches. Overall, early-life diet experiences induced greater changes in trait expressions at the individual than population level. Our findings highlight that ephemeral personal experiences early in life are important determinants of fine-scale phenotypic structure and diversity within groups, and demonstrate environmental induction of the link between individualized niche use and personality formation.

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来源期刊

Entomologia Generalis 生物-昆虫学

CiteScore

7.10

自引率

18.80%

发文量

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.