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DOI	10.1111/eea.13432
	Does the temperature-size rule apply to idiobiont parasitoids?
	Gagnon, Annie-Eve; Martel, Veronique; Boivin, Guy
发表日期	2024
ISSN	0013-8703
EISSN	1570-7458
起始页码	172
结束页码	6
卷号	172 期号:6
英文摘要	In most ectotherms, several life-history traits, including body size, respond to environmental conditions through the temperature-size rule (TSR). The mechanisms underlying the TSR are still being debated, but studying idiobiont insect parasitoids, which develop with a fixed amount of resources, may shed light on this relationship. In this study, we conducted experiments to determine how the developmental temperature affects various characteristics of male and female Trichogramma euproctidis (Girault) (Hymenoptera: Trichogrammatidae), an idiobiont egg parasitoid of Lepidoptera. The study tested various hypotheses, including the cellular or oxygen diffusion hypotheses and the resource acquisition hypothesis, to understand whether T. euproctidis follows the TSR. The developmental time of both male and female T. euproctidis decreased with increasing temperature. Both males and females displayed a unimodal distribution for size, dry mass, and lipid content, with individuals at lower and higher temperatures being smaller, weighing less, and containing fewer lipids. Female lifetime fecundity increased from 13 to 24 degrees C and then decreased at 31 degrees C. Additionally, the number and size of gametes in male and female T. euproctidis displayed a unimodal distribution with increasing temperature. Trichogramma euproctidis deviates from the TSR as it follows a non-linear reaction norm with an optimal developmental temperature. This result supports the hypothesis that for species following TSR and having unlimited access to food resources, the resource acquisition hypothesis is a significant mechanism explaining the TSR. With climate change affecting temperature, understanding the TSR is crucial, and research on insect parasitoids may help reveal how the interplay between environmental temperature and resource allocation affects the TSR in natural populations. In ectotherms, the temperature-size rule (TSR) influences body size, where individuals developing at higher temperatures become smaller adults compared to those at lower temperatures. We studied Trichogramma euproctidis (Hymenoptera: Trichogrammatidae), an idiobiont parasitoid with limited access to resources, to understand the mechanisms of the TSR. Developmental time was negatively affected with temperature. Adult size, mass, lipid content, gamete number, and gamete size followed a unimodal distribution. Trichogramma euproctidis deviates from TSR, supporting the resource acquisition hypothesis.image
英文关键词	development; fecundity; Hymenoptera; lipid; mass; oxygen diffusion; phenotypic plasticity; reaction norm; resource acquisition; Trichogramma euproctidis; Trichogrammatidae; TSR
语种	英语
WOS研究方向	Entomology
WOS类目	Entomology
WOS记录号	WOS:001184477500001
来源期刊	ENTOMOLOGIA EXPERIMENTALIS ET APPLICATA
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/305731
作者单位	Agriculture & Agri Food Canada; Natural Resources Canada; Canadian Forest Service; McGill University
推荐引用方式 GB/T 7714	Gagnon, Annie-Eve,Martel, Veronique,Boivin, Guy. Does the temperature-size rule apply to idiobiont parasitoids?[J],2024,172(6).
APA	Gagnon, Annie-Eve,Martel, Veronique,&Boivin, Guy.(2024).Does the temperature-size rule apply to idiobiont parasitoids?.ENTOMOLOGIA EXPERIMENTALIS ET APPLICATA,172(6).
MLA	Gagnon, Annie-Eve,et al."Does the temperature-size rule apply to idiobiont parasitoids?".ENTOMOLOGIA EXPERIMENTALIS ET APPLICATA 172.6(2024).