Resistance is futile: lack of predator switching and a preference for native prey predict the success of an invasive prey species

Cuthbert, Ross N.; Dickey, James W. E.; McMorrow, Clare; Laverty, Ciaran; Dick, Jaimie T. A.

doi:10.1098/rsos.180339

Cited by 49 publications

(58 citation statements)

References 21 publications

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“…Moreover, invasive species can cause considerable social, economic and ecological damage (Blackburn et al, ; Pimentel, Lach, Zuniga, & Morrison, ), altering ecosystems and endangering food security (Schweiger et al, ; Veldtman et al, ; Ziska, Blumenthal, Runion, Hunt, & Diaz‐Soltero, ). The invasiveness and impact of invasive species is a complex interplay between biotic and abiotic factors (D'Antonio, ; Thuiller, Richardson, Rouget, Procheş, & Wilson, ; Tobin, ) with varying consequences (Cuthbert, Dickey, McMorrow, Laverty, & Dick, ; Rejmánek & Richardson, ; Ricciardi & Cohen, ). Changing climates can impact the current status of alien species, often resulting in an increased probability to become established or to spread to areas currently deemed environmentally unsuitable (Dukes & Mooney, ; Early et al, ; Sutherst, Floyd, & Maywald, ).…”

Section: Introductionmentioning

confidence: 99%

Global warming promotes biological invasion of a honey bee pest

Cornelissen

Neumann

Schweiger

2019

Global Change Biology

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Climate change and biological invasions are two major global environmental challenges. Both may interact, e.g. via altered impact and distribution of invasive alien species. Even though invasive species play a key role for compromising the health of honey bees, the impact of climate change on the severity of such species is still unknown. The small hive beetle (SHB, Aethina tumida, Murray) is a parasite of honey bee colonies. It is endemic to sub‐Saharan Africa and has established populations on all continents except Antarctica. Since SHBs pupate in soil, pupation performance is governed foremost by two abiotic factors, soil temperature and moisture, which will be affected by climate change. Here, we investigated SHB invasion risk globally under current and future climate scenarios. We modelled survival and development time during pupation (=pupal performance) in response to soil temperature and soil moisture using published and novel experimental data. Presence data on SHB distribution were used for model validation. We then linked the model with global soil data in order to classify areas (resolution: 10 arcmin; i.e. 18.6 km at the equator) as unsuitable, marginal and suitable for SHB pupation performance. Under the current climate, the results show that many areas globally yet uninvaded are actually suitable, suggesting considerable SHB invasion risk. Future scenarios of global warming project a vehement increase in climatic suitability for SHB and corresponding potential for invasion, especially in the temperate regions of the Northern hemisphere, thereby creating demand for enhanced and adapted mitigation and management. Our analysis shows, for the first time, effects of global warming on a honey bee pest and will help areas at risk to prepare adequately. In conclusion, this is a clear case for global warming promoting biological invasion of a pest species with severe potential to harm important pollinator species globally.

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Section: Introductionmentioning

confidence: 99%

Global warming promotes biological invasion of a honey bee pest

Cornelissen

Neumann

Schweiger

2019

Global Change Biology

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“…However, as context-dependencies e.g. temperature (Cuthbert et al 2018a) and alternative prey (Cuthbert et al 2018e) can influence predatorprey interaction strengths, examinations of additional environmental effects on predation rates of such calanoid copepods towards target prey are urgently required.…”

Section: Resultsmentioning

confidence: 99%

Calanoid Copepods: An Overlooked Tool in the Control of Disease Vector Mosquitoes

Cuthbert

Dalu

Wasserman

et al. 2018

Journal of Medical Entomology

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Biological control can assist in the management of disease vector mosquitoes. However, we urgently require the identification of novel and effective agents to aid population management strategies. Previously, predatory biocontrol of disease vector mosquito species has focused extensively on cyclopoid copepods, but prey size refuge effects have been identified as a hindrance to their predatory efficacy. Calanoid copepods have yet to be examined in the context of mosquito control, despite their high prevalence, diversity, and distribution. Here, we apply functional responses (FRs; resource use as a function of resource density) to examine predation efficiencies of a recently described ephemeral pond specialist species, the freshwater calanoid copepod Lovenula raynerae Suárez-Morales, Wasserman & Dalu 2015 (Calanoida: Diaptomidae), using different size classes of larvae of the disease vector complex Culex pipiens (Diptera: Culicidae) as prey. Lovenula raynerae effectively consumed Cx. pipiens larvae across their ontogeny. A potentially population destabilizing type II FR was exhibited toward both early and late instar mosquitoes, indicative of a lack of prey refuge across ontogenetic stages. Attack rates were greatest and handling times lowest for early instar larvae compared to late instar larvae. These traits contrast to other copepods commonly applied in biocontrol, which are only able to handle early instars, and in much smaller numbers. We thus advocate that calanoid copepods can exert particularly marked predatory impact on lower trophic groups, and that their use in disease vector mosquito control strategies should be further explored.

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“…This quantifies the initial gradient of the functional response curve, and gives insights into the critical impact a consumer exerts at low resource densities (Dick et al 2014). Cuthbert et al (2018c) show the consistency of the maximum feeding rate and attack rate as functional response measures for two copepod species, Macrocyclops albidus and Megacyclops viridis, at three different temperatures. However, Dickey et al (2018) reveal a noticeable difference between these two metrics for two turtle species, with Trachemys scripta troostii demonstrating a high maximum feeding rate but a low attack rate, and Kinosternon subrubrum demonstrating the reverse.…”

Section: The Relative Impact Potential Metric For Quantification Of Imentioning

confidence: 99%

On the RIP: using Relative Impact Potential to assess the ecological impacts of invasive alien species

Dickey¹,

Cuthbert²,

South³

et al. 2020

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Invasive alien species continue to arrive in new locations with no abatement in rate, and thus greater predictive powers surrounding their ecological impacts are required. In particular, we need improved means of quantifying the ecological impacts of new invasive species under different contexts. Here, we develop a suite of metrics based upon the novel Relative Impact Potential (RIP) metric, combining the functional response (consumer per capita effect), with proxies for the numerical response (consumer population response), providing quantification of invasive species ecological impact. These metrics are comparative in relation to the eco-evolutionary baseline of trophically analogous natives, as well as other invasive species and across multiple populations. Crucially, the metrics also reveal how impacts of invasive species change under abiotic and biotic contexts. While studies focused solely on functional responses have been successful in predictive invasion ecology, RIP retains these advantages while adding vital other predictive elements, principally consumer abundance. RIP can also be combined with propagule pressure to quantify overall invasion risk. By highlighting functional response and numerical response proxies, we outline a user-friendly method for assessing the impacts of invaders of all trophic levels and taxonomic groups. We apply the metric to impact assessment in the face of climate change by taking account of both changing predator consumption rates and prey reproduction rates. We proceed to outline the application of RIP to assess biotic resistance against incoming invasive species, the effect of evolution on invasive species impacts, application to interspecific competition, changing spatio-temporal patterns of invasion, and how RIP can inform biological control. We propose that RIP provides scientists and practitioners with a user-friendly, customisable and, crucially, powerful technique to inform invasive species policy and management.

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Resistance is futile: lack of predator switching and a preference for native prey predict the success of an invasive prey species

Cited by 49 publications

References 21 publications

Global warming promotes biological invasion of a honey bee pest

Global warming promotes biological invasion of a honey bee pest

Calanoid Copepods: An Overlooked Tool in the Control of Disease Vector Mosquitoes

On the RIP: using Relative Impact Potential to assess the ecological impacts of invasive alien species

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