How does ageing affect life history traits and cold tolerance in summer‐versus winter‐acclimated fruit flies?

Ecological Entomology, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Abstract All species exhibit functional senescence, a process related to ageing that is influenced by both abiotic and biotic factors. Ageing leads decline in function drives phenotypic marked reduction performance over time. In temperate regions, overwintering must survive age for several months, often facing challenging conditions with low food availability chilling injuries. Yet, might enter state of dormancy, which can extend longevity enhance stress tolerance. Evaluating the survivors crucial predicting population dynamics, especially significant pests like invasive fruit flies. At end winter, surviving fly populations, are expected rebuild new generations, likely dormant (i.e., reproductive quiescence) senescent. However, their has not been thoroughly described. This study aims decipher effect on tolerance capacity males females summer‐acclimated (SP) versus winter‐acclimated (WP) phenotypes Drosophila suzukii . SP WP flies were reared under normal temperature conditions, respectively, four categories established: very young, middle old. showed typical age‐related fecundity. contrast, cold‐acclimated maintained high exhibited lower but stable potential, despite months at temperature. Our highlights importance distinguishing between summer phenotypes, as differentially affects both.

Language: Английский

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Physiological trade-offs in male social insects: Interactions among infection, immunity, fertility, size, and age in honey bee drones

Journal of Insect Physiology, Journal Year: 2024, Volume and Issue: 159, P. 104720 - 104720

Published: Nov. 5, 2024

Female social insects represent a dramatic exception of the evolutionarily conserved physiological trade-off between reproduction and life span, where aging is positively correlated with reproduction. However, whether this facet history also pertains to male insects, remains largely unknown. Male honey bees (drones) die in act copulation, placing them under opposing selective pressures. At individual level, there inter-male competition for single successful mating attempt, leading pressure that favors an increase fitness. Honey bee drones are haploid individuals lack allelic variation their genome compared diploid females. We hypothesized genetic limitation may result trade-offs pathological stress fitness traits males. In our study, we observed differences size fertility measures old young along stressors several endemic viruses transcriptional immune response. found infection does not appear decrease drones, despite evidence shift expression away from established mechanisms. Contrary expectations, additionally do exhibit fertility. These findings demonstrate different likely quality higher favor retaining reproductive output over function.

Language: Английский

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Group size influences maternal provisioning and compensatory larval growth in honeybees

iScience, Journal Year: 2023, Volume and Issue: 26(12), P. 108546 - 108546

Published: Nov. 23, 2023

Environmental variation selects for the adaptive plasticity of maternal provisioning. Even though developing honeybees find themselves in a protected colony environment, their reproductively specialized queens actively adjust investment, even among worker-destined eggs. However, potentially consequences this flexible provisioning strategy and mechanistic basis are unknown. Under natural conditions, we that body size larvae hatching from small eggs large colonies converges with initially larger typically produced colonies. confer persistent advantage when cross-fostered colonies, respectively. We substantiate increased investment by identifying growth-promoting metabolomes proteomes compared to eggs, which primarily enriched amino acid metabolism cell maturation. Thus, our study provides comprehensive explanation worker egg honeybees.

Language: Английский

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Aging and behavior in honey bees

Elsevier eBooks, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Language: Английский

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Adapting to change: Bee pollinator signatures in anthropized environments

Current Opinion in Insect Science, Journal Year: 2024, Volume and Issue: unknown, P. 101297 - 101297

Published: Nov. 1, 2024

Language: Английский

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