High developmental temperature leads to low reproduction despite adult temperature

Journal of Thermal Biology, Год журнала: 2020, Номер 95, С. 102794 - 102794

Опубликована: Ноя. 28, 2020

Язык: Английский

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Adipose mitochondrial metabolism controls body growth by modulating systemic cytokine and insulin signaling

Cell Reports, Год журнала: 2022, Номер 39(6), С. 110802 - 110802

Опубликована: Май 1, 2022

Animals must adapt their growth to fluctuations in nutrient availability ensure proper development. These adaptations often rely on specific nutrient-sensing tissues that control whole-body physiology through inter-organ communication. While the signaling mechanisms underlie this communication are well studied, contributions of metabolic alterations less clear. Here, we show how reprogramming adipose mitochondria controls Drosophila larvae. We find dietary nutrients alter fat-body mitochondrial morphology lower bioenergetic activity, leading rewiring glucose metabolism. Strikingly, genetic reduction bioenergetics just fat body is sufficient accelerate and effects caused by inhibition fat-derived secreted peptides ImpL2 tumor necrosis factor alpha (TNF-α)/Eiger, enhanced systemic insulin signaling. Our work reveals metabolism one tissue can couple growth.

Язык: Английский

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Pest management facing warming and chemical stresses: Multi-stress effects on the biological agent Trichogramma oleae

The Science of The Total Environment, Год журнала: 2024, Номер 947, С. 174709 - 174709

Опубликована: Июль 10, 2024

Global change is affecting plant-insect interactions in agroecosystems and can have dramatic consequences on yields when causing non-targeted pest outbreaks threatening the use of natural enemies for biocontrol. The vineyard agroecosystem an interesting system to study multi-stress conditions: one hand, agricultural intensification comes with high inputs copper-based fungicides and, other temperatures are rising due climate change. We investigated interactive bottom-up effects both temperature increase exposure important Lepidopteran Lobesia botrana its enemy, oophagous parasitoid Trichogramma oleae. exposed L. larvae three increasing copper sulfate concentrations under two fluctuating thermal regimes, current future. Eggs produced by were then T. Our results showed that survival botrana, was only reduced highest concentration improved warmer regime. development time strongly regime but increased concentrations, whereas pupal mass sulfate. oleae F1 emergence rate their combined concentrations. Size, longevity fecundity decreased These moth enemy probably result trade-offs between facing conditions implicate potential future biological control. supplies valuable data how interaction pests control agents affected conditions.

Язык: Английский

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Gene expression responses to environmental cues shed light on components of the migratory syndrome in butterflies

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Июль 19, 2024

Migration is a complex behavior involving the synchronisation of many physiological and behavioral processes. Environmental cues must thus be interpreted to make decisions regarding resource allocation between, for example, migration or reproduction. In butterflies, lack host plants sustain new generation may indicate need migrate. Here, we used painted lady butterfly ( Vanessa cardui ) as model characterize gene expression variation in response plant availability. Assessment availability adult female butterflies revealed significant modifications expression, particularly within hormonal pathways (ecdysone oxidase juvenile hormone esterase). We therefore hypothesize that tuning ecdysone pathway play crucial role regulating timing reproduction butterflies. addition, our analysis enrichment genes associated with lipid, carbohydrate, vitamin biosynthesis, well immune response. As environmental acquisition occurs throughout life cycle, also tracked responses two other across major developmental stages. Differences both larval crowding during development resulted changes involved development, metabolism, at instar V stage. summary, results offer novel insights into how affect profiles migratory insects highlight candidate underpin syndrome butterfly.

Язык: Английский

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Repeated short-term thermal stress and its impact on reproductive fitness in parthenium beetle, Zygogramma bicolorata (Coleoptera: Chrysomelidae)

The Canadian Entomologist, Год журнала: 2024, Номер 156

Опубликована: Янв. 1, 2024

Abstract Insects experience variable temperature conditions in their natural environment, making constant studies unrealistic. To address this, we investigated the effects of repeated short-term heat stress (STH) and cold (STC) on pre-oviposition, oviposition, post-oviposition periods, as well fecundity egg viability parthenium beetle, Zygogramma bicolorata Pallister (Coleoptera: Chrysomelidae). We found that pre-oviposition periods were shortest under STH at optimal longest STC conditions. Conversely, oviposition temperature. Oviposition STH, whereas both Age-specific trends triangular, egg-viability plateau-shaped all temperatures. Females subjected to experienced highest peaks early adult life. lifetime longevity temperature, was maximal Regardless they maintained at, middle-aged females exhibited viability. Based these results, despite reducing overall longevity, enhanced daily females, with peak occurring Additionally, increased percentage beetles.

Язык: Английский

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Rethinking the ecdysteroid source during Drosophila pupal–adult development

Insect Biochemistry and Molecular Biology, Год журнала: 2022, Номер 152, С. 103891 - 103891

Опубликована: Дек. 5, 2022

Язык: Английский

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The Impacts of Early-Life Experience on Bee Phenotypes and Fitness

Integrative and Comparative Biology, Год журнала: 2023, Номер 63(3), С. 808 - 824

Опубликована: Март 6, 2023

Synopsis Across diverse animal species, early-life experiences have lifelong impacts on a variety of traits. The scope these impacts, their implications, and the mechanisms that drive effects are central research foci for disciplines in biology, from ecology evolution to molecular biology neuroscience. Here, we review role early life shaping adult phenotypes fitness bees, emphasizing possibility bees ideal species investigate variation experience its consequences at both individual population levels. Bee includes larval pupal stages, critical time periods during which factors like food availability, maternal care, temperature set phenotypic trajectory an individual’s lifetime. We discuss how some common traits impacted by experiences, including development rate body size, influence level, with possible ramifications level. Finally, ways human alterations landscape may impact bee populations through effects. This highlights aspects bees’ natural history behavioral warrant further investigation goal understanding environmental disturbances threaten vulnerable species.

Язык: Английский

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Wolbachia has subtle effects on thermal preference in highly inbred Drosophila melanogaster which vary with life stage and environmental conditions

Scientific Reports, Год журнала: 2023, Номер 13(1)

Опубликована: Авг. 23, 2023

Temperature fluctuations are challenging for ectotherms which not able to regulate body temperature by physiological means and thus have adjust their thermal environment via behavior. However, little is yet known about whether microbial symbionts influence preference (T

Язык: Английский

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Larval social cues influence testicular investment in an insect

Current Zoology, Год журнала: 2021, Номер 68(1), С. 1 - 8

Опубликована: Март 22, 2021

Socio-sexual environment can have critical impacts on reproduction and survival of animals. Consequently, they need to prepare themselves by allocating more resources competitive traits that give them advantages in the particular social setting been perceiving. Evidence shows a male usually raises his investment sperm after he detects current or future increase competition because relative numbers determine paternity share. This leads wide use testis size as an index level, yet does not always reflect production. To date, it is clear whether animals fine-tune their resource allocation production other response cues during growth development. Using polygamous insect Ephestia kuehniella, we tested how larval affected production, size, body weight. We exposed larvae different juvenile socio-sexual measured these traits. demonstrate regardless sex ratio, group-reared males produced eupyrenes (fertile nucleate sperm) but smaller testes than singly reared ones, weight apyrene (infertile anucleate remained same across treatments. conclude presence social, sexual responsible for eupyrene decrease size. suggest fertile cells reduce testicular tissues conspecific cues.

Язык: Английский

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Effect of fluctuating temperatures on development, reproduction and energy of oriental armyworm populations, Mythimna separata

Journal of Applied Entomology, Год журнала: 2022, Номер 146(5), С. 511 - 524

Опубликована: Янв. 21, 2022

Abstract Mythimna separata (Walker) is a destructive grain crop pest in China and other Asian countries. However, the effects of fluctuating environmental conditions on M. populations remain poorly understood. Here, we investigated how temperatures affect development, reproduction, flight capacity energy reserves both migrant resident . Our experiments demonstrated that (20–30°C) significantly accelerated development but inhibited adult reproduction reduced triglyceride compared with constant temperature 25°C, because larval period, pupal lifetime fecundity, mating frequency, ovarian content decreased, while preoviposition period obviously increased. A relative decreased tendency was observed for migrants residents under temperatures. We also confirmed sexes differed their responses to variations. showed slower weaker lower greater reproductive performance than Furthermore, female had potential levels those males at These findings expand our knowledge relationships between armyworm adaptive strategies complex ambient environment.

Язык: Английский

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