Ageing effects of social environments in ‘non-social’ insects

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 379(1916)

Published: Oct. 28, 2024

It is increasingly clear that social environments have profound impacts on the life histories of ‘non-social’ animals. However, it not yet well known how species with varying degrees sociality respond to different contexts and whether such effects are sex-specific. To survey extent which specifically affect lifespan ageing in non-social species, we performed a systematic literature review, focusing invertebrates but excluding eusocial insects. We found 80 studies or parameters were measured relation changes same-sex opposite-sex exposure, group size cues thereof. Most focused manipulations adults, often reporting sex differences following exposure opposite sex. Some highlighted developmental partner age lifespan. Several explored potential underlying mechanisms, emphasizing insects could provide excellent opportunities interrogate basis ageing. discuss what these can tell us about environment as stressor, trade-offs resources prompted by contexts. suggest fruitful avenues for further research across wider more diverse range taxa. This article part discussion meeting issue ‘Understanding society using natural populations’.

Language: Английский

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Perception and Longevity Control in Invertebrate Model Organisms—A Mini-Review of Recent Advances

Biomolecules, Journal Year: 2025, Volume and Issue: 15(2), P. 187 - 187

Published: Jan. 28, 2025

Perception alone can, in some cases, be sufficient to modulate aging and longevity. These influences on are perhaps mediated by changes motivational states that regulate metabolism physiology impact health. Simple invertebrate models uniquely enable detailed dissection of integrative pathways linking perceptions remain the leading systems for advancing this field. Over past 25 years, studies using fruit fly Drosophila melanogaster nematode Caenorhabditis elegans have demonstrated sensory cues, such as those related food or mating, can influence independently physical acts associated with them. In review, we highlight recent advancements these models, focusing two key areas progress: (i) discovery lifespan modulation driven novel cues across multiple modalities, including non-sexual social experience, light, dietary choices; (ii) assignment new aging-regulation functions specific neurons downstream perception. The latter offers an exciting first glimpse at neuronal circuits integrating states, physiology, aging.

Language: Английский

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Exposure to female olfactory cues hastens reproductive ageing and increases mortality when mating in male mice

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 291(2017)

Published: Feb. 28, 2024

Theories of ageing predict that investment in reproduction will trade-off against survival and later-life reproduction. Recent evidence from invertebrates suggests just perceiving cues a potential mate's presence can reduce lifespan, particularly males, activation neuroendocrine reward pathways associated with mating alleviate these effects. Whether similar effects occur vertebrates remains untested. We tested whether exposure to olfactory the opposite sex would influence mortality reproductive senescence male mice. observed males exposed female middle- old age (from 10 24 months age) showed reduced late-life fertility, irrespective they had also been allowed mate females earlier life. Males were odours conjunction an increased rate across period, indicating increase some environments. Our results show mice, highlighting sensory perception mates may be important driver life-history trade-offs mammals.

Language: Английский

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Perception of dead conspecifics increases reproductive investment in fruit flies

Functional Ecology, Journal Year: 2022, Volume and Issue: 36(8), P. 1834 - 1844

Published: June 9, 2022

Abstract Adaptive plasticity in life‐history traits is often critical to maximize fitness the face of environmental heterogeneity. For example, many organisms respond a threat their survival (and hence residual reproductive value) by adaptively increasing investment into current reproduction (i.e. ‘terminal investment’). A key successful terminal use adequate cues extrinsic mortality sources. In species that live at high population densities, presence dead conspecifics could potentially act as reliable cue sources (e.g. via pathogens). We experimentally tested this idea using model organism Drosophila melanogaster , pest experiences marked demographic shifts. monitored output young mated females during repeated bouts egg laying exposed) or absence controls) conspecifics, interspersed mating periods where were always absent. Dead‐exposed produced more offspring than controls when but fewer subsequently removed periods). These changes repeatable across time, and are thus indicative behaviour induced perception conspecifics. Flies responded equally starvation‐induced flash‐frozen indicating cause death irrelevant trigger plastic response observed, per se. Finally, we found dead‐exposed heavier daughters (but not sons) (when absent). species, body size correlates strongly with female (than male) fitness, so higher daughter weight congruent investment. Altogether, these results show leads highly adjustments form increased both quantity quality offspring. discuss context other alternative hypotheses. Read free Plain Language Summary for article on Journal blog.

Language: Английский

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Male responses to sperm competition risk associated with increased macronutrient intake and reduced lifespan

Biology Letters, Journal Year: 2023, Volume and Issue: 19(10)

Published: Oct. 1, 2023

Increased expenditure on the ejaculate is a taxonomically widespread male response to sperm competition. assumed come at cost future reproduction, otherwise males should always invest maximally. However, life-history costs of strategic ejaculation are not well documented. Macronutrient intake known affect trade-off between reproduction and lifespan. Intakes protein carbohydrate that maximize often differ from those Here, we asked whether by crickets, Teleogryllus oceanicus , mediated macronutrient intake, it comes reduced Males were exposed rival song throughout their lifespan or held in silent non-competitive environment. had higher both carbohydrate, they reached adulthood sooner, produced ejaculates quality, died sooner than living Our findings provide rare example mechanisms associated with ejaculation.

Language: Английский

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Does perception of female cues modulate male short‐term fitness components in Drosophila melanogaster?

Ecology and Evolution, Journal Year: 2022, Volume and Issue: 12(9)

Published: Sept. 1, 2022

Phenotypic plasticity in reproductive behavior can be a strong driver of individual fitness. In species with high intra-sexual competition, changes socio-sexual context trigger quick adaptive plastic responses males. particular, recent study the vinegar fly (

Language: Английский

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The indirect influence of potential mates on survival and reproduction of Tyrophagus curvipenis (Acari: Acaridae)

Bulletin of Entomological Research, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 7

Published: June 3, 2024

Abstract The social-sexual environment is well known for its influence on the survival of organisms by modulating their reproductive output. However, whether it affects indirectly through a variety cues without physical contact and relative to direct interaction remain largely unknown. In this study, we investigated both indirect influences reproduction mite Tyrophagus curvipenis (Acari: Acaridae). results demonstrated no apparent conspecific mites, but mated female mites significantly changed, with females males having shortened lifespan increased lifetime fecundity. For males, significant difference was observed across treatments in lifespan. These findings indicate that opposite sex has much more profound than highlight urgent need expand research how modulate performance species clarify impacts taxa.

Language: Английский

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Sexual perception does not modulate male short-term fitness components in Drosophila melanogaster.

Authorea (Authorea), Journal Year: 2022, Volume and Issue: unknown

Published: April 27, 2022

Phenotypic plasticity in reproductive behaviour can be a strong driver of individual fitness. For example, species with high intra-sexual competition, changes socio-sexual context trigger quick adaptive plastic responses males. In particular, recent study the vinegar fly ( Drosophila melanogaster ) shows that males respond adaptively to perception female cues way increases their success, but we ignore underlying mechanisms this phenomenon. Here, aimed fill gap by investigating short-term effects on male pre- and post-copulatory components success: a) mating b) latency duration, c) sperm competitiveness, d) ejaculate receptivity oviposition rate. We found brief sexual increased had no effect main or fitness proxies. These results tie up previous findings suggest are not due advantage, rather benefits play out across entire lifespan.

Language: Английский

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