Community context modifies response of host-parasitoid interactions to phenological mismatch under warming

Pardikes, Nicholas A.; Revilla, Tomás A.; Lue, Chia‐Hua; Thierry, Mélanie; Souto-Villaros, Daniel; Hrček, Jan

doi:10.22541/au.162454818.82806593/v1

Cited by 3 publications

(3 citation statements)

References 53 publications

(68 reference statements)

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“…However, increasing predator diversity should be generally beneficial for top-down control by increasing the chances to have a more effective natural enemy species in the community, as it was the case in our study (i.e., sampling effect model [64]). Moreover, presence of multiple species in the community could buffer any mismatch between predator and prey species induced by warming [65]. Ganaspis sp .…”

Section: Discussionmentioning

confidence: 99%

Presence of multiple parasitoids decreases host survival under warming, but parasitoid performance also decreases

Thierry

Pardikes

Rosenbaum

et al. 2021

Preprint

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Current global changes are reshaping ecological communities and modifying environmental conditions. We need to recognize the combined impact of these biotic and abiotic factors on species interactions, community dynamics and ecosystem functioning. Specifically, the strength of predator-prey interactions often depends on the presence of other natural enemies: it weakens with competition and interference, or strengthens with facilitation. Such effects of multiple predators on prey are likely to be affected by changes in the abiotic environment, altering top-down control, a key structuring force in both natural and agricultural ecosystems. Here, we investigated how warming alters the effects of multiple predators on prey suppression using a dynamic model coupled with empirical laboratory experiments with Drosophila-parasitoid communities. While the effects of multiple parasitoids on host suppression were the average of the effects of individual parasitoid at ambient temperature, host suppression with multiple parasitoids was higher than expected under warming. Multiple parasitoid species had equivalent effect to multiple individuals of a same species. While multiple parasitoids enhanced top-down control under warming, parasitoid performance generally declined when another parasitoid was present due to competitive interactions, which could reduce top-down control in the long-term. Our study highlights the importance of accounting for interactive effects between abiotic and biotic factors to better predict community dynamics in a rapidly changing world, and better preserve ecosystem functioning and services such as biological control.

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Section: Discussionmentioning

confidence: 99%

Presence of multiple parasitoids decreases host survival under warming, but parasitoid performance also decreases

Thierry

Pardikes

Rosenbaum

et al. 2021

Preprint

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“…A very high mortality rate of the immature stages of Aganaspis daci (Weld) (Hymenoptera: Figitidae), a natural enemy of Ceratitis capitata (Wiedemann) (Diptera: Tephritidae), was observed at 15 and 30 • C [182]. Qiu et al [183] reported that at 26 • C Microplitis manilae (Ashmead) (Hymenoptera: Braconidae) presented maximum parasitism rate on Spodoptera exigua (Hübner) and Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae), which significantly dropped at 32 • C. Similarly, other laboratory experiments have demonstrated a reduced parasitism rate, short lifespan, and high pupal mortality when temperature exceeded the thermal limit of the parasitoids [64,179,[184][185][186].…”

Section: Temperature Tolerance Ranges and Implications For Biocontrol...mentioning

confidence: 90%

Host–Parasitoid Phenology, Distribution, and Biological Control under Climate Change

Ramos Aguila,

Li,

Akutse

et al. 2023

Life

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Climate change raises a serious threat to global entomofauna—the foundation of many ecosystems—by threatening species preservation and the ecosystem services they provide. Already, changes in climate—warming—are causing (i) sharp phenological mismatches among host–parasitoid systems by reducing the window of host susceptibility, leading to early emergence of either the host or its associated parasitoid and affecting mismatched species’ fitness and abundance; (ii) shifting arthropods’ expansion range towards higher altitudes, and therefore migratory pest infestations are more likely; and (iii) reducing biological control effectiveness by natural enemies, leading to potential pest outbreaks. Here, we provided an overview of the warming consequences on biodiversity and functionality of agroecosystems, highlighting the vital role that phenology plays in ecology. Also, we discussed how phenological mismatches would affect biological control efficacy, since an accurate description of stage differentiation (metamorphosis) of a pest and its associated natural enemy is crucial in order to know the exact time of the host susceptibility/suitability or stage when the parasitoids are able to optimize their parasitization or performance. Campaigns regarding landscape structure/heterogeneity, reduction of pesticides, and modelling approaches are urgently needed in order to safeguard populations of natural enemies in a future warmer world.

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“…sampling effect model [64]). Moreover, the presence of multiple species in the community could buffer any mismatch between predator and prey species induced by warming [65]. Ganaspis sp.…”

Section: (D) Similar Effects Of Intra-versus Interspecific Multiple P...mentioning

confidence: 99%

The presence of multiple parasitoids decreases host survival under warming, but parasitoid performance also decreases

et al. 2022

View full text Add to dashboard Cite

Current global changes are reshaping ecological communities and modifying environmental conditions. We need to recognize the combined impact of these biotic and abiotic factors on species interactions, community dynamics and ecosystem functioning. Specifically, the strength of predator–prey interactions often depends on the presence of other natural enemies: it weakens with competition and interference or strengthens with facilitation. Such effects of multiple predators on prey are likely to be affected by changes in the abiotic environment, altering top-down control, a key structuring force in natural and agricultural ecosystems. Here, we investigated how warming alters the effects of multiple predators on prey suppression using a dynamic model coupled with empirical laboratory experiments with Drosophila– parasitoid communities. While multiple parasitoids enhanced top-down control under warming, parasitoid performance generally declined when another parasitoid was present owing to competitive interactions. This could reduce top-down control over multiple generations. Our study highlights the importance of accounting for interactive effects between abiotic and biotic factors to better predict community dynamics in a rapidly changing world and thus better preserve ecosystem functioning and services such as biological control.

show abstract

Community context modifies response of host-parasitoid interactions to phenological mismatch under warming

Cited by 3 publications

References 53 publications

Presence of multiple parasitoids decreases host survival under warming, but parasitoid performance also decreases

Presence of multiple parasitoids decreases host survival under warming, but parasitoid performance also decreases

Host–Parasitoid Phenology, Distribution, and Biological Control under Climate Change

The presence of multiple parasitoids decreases host survival under warming, but parasitoid performance also decreases

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