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Predicting invasive consumer impact via the comparative functional response approach: linking application to ecological theory. Biol Invasions 2022. [DOI: 10.1007/s10530-022-02862-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
AbstractThe Comparative Functional Response Approach (CFRA) was developed to provide a practical methodology by which short-term experiments can be used to forecast the longer-term impacts of a potential invading consumer. The CFRA makes inferences about potential invader impact based on comparisons of the functional responses of invader and native consumers on native resources in a common experimental venue. Application of the CFRA and derivative approaches have proliferated since it was introduced in 2014. Here we examine the conceptual foundations of the CFRA within the context of basic Lotka–Volterra consumer-resource theory. Our goals are to assess whether core predictions of the CFRA hold within this framework, to consider the relative importance of background mortality and consumer assimilation efficiency in determining predator impact, and to leverage this conceptual framework to expand the discussion regarding stability and long term consumer and resource dynamics. The CFRA assertion that consumers with a higher functional response will have larger impacts on resources only holds as long as all other parameters are equal, but basic theory indicates that predator impacts on prey abundance and stability will depend more on variation in conversion efficiency and background mortality. While examination of the CFRA within this framework highlights limitations about its current application, it also points to potential strengths that are only revealed when a theoretical context is identified, in this case the implications for stability and conceptual links to competition theory.
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2
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Vagnon C, Rohr RP, Bersier LF, Cattanéo F, Guillard J, Frossard V. Combining food web theory and population dynamics to assess the impact of invasive species. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.913954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The impacts of invasive species on resident communities are driven by a tangle of ecological interactions difficult to quantify empirically. Combining a niche model with a population dynamic model, both allometrically parametrized, may represent a consistent framework to investigate invasive species impacts on resident communities in a food web context when empirical data are scarce. We used this framework to assess the ecological consequences of an invasive apex predator (Silurus glanis) in peri-Alpine lake food webs. Both increases and decreases of resident species abundances were highlighted and differed when accounting for different S. glanis body sizes. Complementarily, the prominence of indirect effects, such as trophic cascades, suggested that common approaches may only capture a restricted fraction of invasion consequences through direct predation or competition. By leveraging widely available biodiversity data, our approach may provide relevant insights for a comprehensive assessment and management of invasive species impacts on aquatic ecosystems.
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3
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Dickey JWE, Coughlan NE, Dick JTA, Médoc V, McCard M, Leavitt PR, Lacroix G, Fiorini S, Millot A, Cuthbert RN. Breathing space: deoxygenation of aquatic environments can drive differential ecological impacts across biological invasion stages. Biol Invasions 2021; 23:2831-2847. [PMID: 34720687 PMCID: PMC8550720 DOI: 10.1007/s10530-021-02542-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 04/16/2021] [Indexed: 11/29/2022]
Abstract
The influence of climate change on the ecological impacts of invasive alien species (IAS) remains understudied, with deoxygenation of aquatic environments often-overlooked as a consequence of climate change. Here, we therefore assessed how oxygen saturation affects the ecological impact of a predatory invasive fish, the Ponto-Caspian round goby (Neogobius melanostomus), relative to a co-occurring endangered European native analogue, the bullhead (Cottus gobio) experiencing decline in the presence of the IAS. In individual trials and mesocosms, we assessed the effect of high, medium and low (90%, 60% and 30%) oxygen saturation on: (1) functional responses (FRs) of the IAS and native, i.e. per capita feeding rates; (2) the impact on prey populations exerted; and (3) how combined impacts of both fishes change over invasion stages (Pre-invasion, Arrival, Replacement, Proliferation). Both species showed Type II potentially destabilising FRs, but at low oxygen saturation, the invader had a significantly higher feeding rate than the native. Relative Impact Potential, combining fish per capita effects and population abundances, revealed that low oxygen saturation exacerbates the high relative impact of the invader. The Relative Total Impact Potential (RTIP), modelling both consumer species’ impacts on prey populations in a system, was consistently higher at low oxygen saturation and especially high during invader Proliferation. In the mesocosm experiment, low oxygen lowered RTIP where both species were present, but again the IAS retained high relative impact during Replacement and Proliferation stages at low oxygen. We also found evidence of multiple predator effects, principally antagonism. We highlight the threat posed to native communities by IAS alongside climate-related stressors, but note that solutions may be available to remedy hypoxia and potentially mitigate impacts across invasion stages.
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Affiliation(s)
- James W E Dickey
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL Northern Ireland, UK.,Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), 12587 Berlin, Germany
| | - Neil E Coughlan
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL Northern Ireland, UK.,School of Biological, Earth and Environmental Sciences, University College Cork, Distillery Fields, North Mall, Cork, Ireland
| | - Jaimie T A Dick
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL Northern Ireland, UK
| | - Vincent Médoc
- Equipe de Neuro-Ethologie Sensorielle (ENES), Centre de Recherche en Neurosciences de Lyon (CRNL), CNRS, INSERM, Université de Lyon/Saint-Etienne, Saint-Etienne, France
| | - Monica McCard
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL Northern Ireland, UK
| | - Peter R Leavitt
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL Northern Ireland, UK.,Department of Biology, University of Regina, Regina, SK S4S 0A2 Canada
| | - Gérard Lacroix
- iEES-Paris, Institut d'Ecologie et des Sciences de l'Environnement de Paris (IRD, Sorbonne Université, CNRS, INRA, UPEC, Université Paris Diderot), CC237 Paris, France.,Ecole Normale Supérieure, CNRS, Centre de Recherche en Écologie Expérimentale et Prédictive (CEREEP-Ecotron Ile-De-France), UMS 3194, PSL Research University, Saint-Pierre-lès-Nemours, France
| | - Sarah Fiorini
- Ecole Normale Supérieure, CNRS, Centre de Recherche en Écologie Expérimentale et Prédictive (CEREEP-Ecotron Ile-De-France), UMS 3194, PSL Research University, Saint-Pierre-lès-Nemours, France
| | - Alexis Millot
- Ecole Normale Supérieure, CNRS, Centre de Recherche en Écologie Expérimentale et Prédictive (CEREEP-Ecotron Ile-De-France), UMS 3194, PSL Research University, Saint-Pierre-lès-Nemours, France
| | - Ross N Cuthbert
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL Northern Ireland, UK.,GEOMAR, Helmholtz-Zentrum für Ozeanforschung Kiel, 24105 Kiel, Germany
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4
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Cuthbert RN, Dalu T, Wasserman RJ, Sentis A, Weyl OLF, Froneman PW, Callaghan A, Dick JTA. Prey and predator density-dependent interactions under different water volumes. Ecol Evol 2021; 11:6504-6512. [PMID: 34141235 PMCID: PMC8207356 DOI: 10.1002/ece3.7503] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Revised: 03/09/2021] [Accepted: 03/15/2021] [Indexed: 01/28/2023] Open
Abstract
Predation is a critical ecological process that directly and indirectly mediates population stabilities, as well as ecosystem structure and function. The strength of interactions between predators and prey may be mediated by multiple density dependences concerning numbers of predators and prey. In temporary wetland ecosystems in particular, fluctuating water volumes may alter predation rates through differing search space and prey encounter rates. Using a functional response approach, we examined the influence of predator and prey densities on interaction strengths of the temporary pond specialist copepod Lovenula raynerae preying on cladoceran prey, Daphnia pulex, under contrasting water volumes. Further, using a population dynamic modeling approach, we quantified multiple predator effects across differences in prey density and water volume. Predators exhibited type II functional responses under both water volumes, with significant antagonistic multiple predator effects (i.e., antagonisms) exhibited overall. The strengths of antagonistic interactions were, however, enhanced under reduced water volumes and at intermediate prey densities. These findings indicate important biotic and abiotic contexts that mediate predator-prey dynamics, whereby multiple predator effects are contingent on both prey density and search area characteristics. In particular, reduced search areas (i.e., water volumes) under intermediate prey densities could enhance antagonisms by heightening predator-predator interference effects.
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Affiliation(s)
- Ross N. Cuthbert
- GEOMAR Helmholtz‐Zentrum für Ozeanforschung KielKielGermany
- Institute for Global Food Security, School of Biological SciencesQueen's University BelfastBelfastUK
- South African Institute for Aquatic BiodiversityMakhandaSouth Africa
| | - Tatenda Dalu
- South African Institute for Aquatic BiodiversityMakhandaSouth Africa
- School of Biology and Environmental SciencesUniversity of MpumalangaNelspruitSouth Africa
| | - Ryan J. Wasserman
- South African Institute for Aquatic BiodiversityMakhandaSouth Africa
- Department of Zoology and EntomologyRhodes UniversityMakhandaSouth Africa
| | - Arnaud Sentis
- INRAEAix Marseille University, UMR RECOVERAix‐en‐ProvenceFrance
| | - Olaf L. F. Weyl
- DSI/NRF Research Chair in Inland Fisheries and Freshwater EcologySouth African Institute for Aquatic BiodiversityMakhandaSouth Africa
| | | | - Amanda Callaghan
- Ecology and Evolutionary Biology, School of Biological SciencesUniversity of ReadingReadingUK
| | - Jaimie T. A. Dick
- Institute for Global Food Security, School of Biological SciencesQueen's University BelfastBelfastUK
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5
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Superior predatory ability and abundance predicts potential ecological impact towards early-stage anurans by invasive 'Killer Shrimp' (Dikerogammarus villosus). Sci Rep 2021; 11:4570. [PMID: 33633148 PMCID: PMC7907340 DOI: 10.1038/s41598-021-82630-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 12/16/2020] [Indexed: 11/09/2022] Open
Abstract
Invasive alien species negatively impact upon biodiversity and generate significant economic costs worldwide. Globally, amphibians have suffered considerable losses, with a key driver being predation by large invasive invertebrate and vertebrate predators. However, there is no research regarding the potential ecological impact of small invertebrate invaders. The invasive freshwater amphipod Dikerogammarus villosus can act as a top predator capable of displacing native amphipods and preying heavily upon a range of native species. Listed as one of Europe's top 100 worst invaders, D. villosus has significantly restructured freshwater communities across western Europe and is expected to invade North America in the near future. Here we explore the ecological impact of invasive D. villosus upon UK native and invasive amphibians (Rana temporaria and Xenopus laevis respectively) using the "Relative Impact Potential" (RIP) metric. By combining estimations of per capita effects (i.e. functional response; FR) and relative field abundances, we apply the RIP metric to quantify the potential ecological impact of invasive D. villosus upon embryonic and larval amphibian prey, compared to the native amphipod Gammarus pulex. Both native and invasive amphipods consumed early-stage amphibians and exhibited potentially destabilising Type II FRs. However, larger body size in invasive D. villosus translated into a superior FR through significantly lower handling times and subsequently higher maximum feeding rates-up to seven times greater than native G. pulex. Higher invader abundance also drove elevated RIP scores for invasive D. villosus, with potential impact scores predicted up to 15.4 times greater than native G. pulex. Overall, D. villosus is predicted to have a greater predatory impact upon amphibian populations than G. pulex, due primarily to its larger body size and superior field abundance, potentially reducing amphibian recruitment within invaded regions.
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Haubrock PJ, Pilotto F, Innocenti G, Cianfanelli S, Haase P. Two centuries for an almost complete community turnover from native to non-native species in a riverine ecosystem. GLOBAL CHANGE BIOLOGY 2021; 27:606-623. [PMID: 33159701 DOI: 10.1111/gcb.15442] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 10/12/2020] [Accepted: 10/31/2020] [Indexed: 05/25/2023]
Abstract
Non-native species introductions affect freshwater communities by changing community compositions, functional roles, trait occurrences and ecological niche spaces. Reconstructing such changes over long periods is difficult due to limited data availability. We collected information spanning 215 years on fish and selected macroinvertebrate groups (Mollusca and Crustacea) in the inner-Florentine stretch of the Arno River (Italy) and associated water grid, to investigate temporal changes. We identified an almost complete turnover from native to non-native fish (1800: 92% native; 2015: 94% non-native species) and macroinvertebrate species (1800: 100% native; 2015: 70% non-native species). Non-native fish species were observed ~50 years earlier compared to macroinvertebrate species, indicating phased invasion processes. In contrast, α-diversity of both communities increased significantly following a linear pattern. Separate analyses of changes in α-diversities for native and non-native species of both fish and macroinvertebrates were nonlinear. Functional richness and divergence of fish and macroinvertebrate communities decreased non-significantly, as the loss of native species was compensated by non-native species. Introductions of non-native fish and macroinvertebrate species occurred outside the niche space of native species. Native and non-native fish species exhibited greater overlap in niche space over time (62%-68%) and non-native species eventually replaced native species. Native and non-native macroinvertebrate niches overlapped to a lesser extent (15%-30%), with non-natives occupying mostly unoccupied niche space. These temporal changes in niche spaces of both biotic groups are a direct response to the observed changes in α-diversity and species turnover. These changes are potentially driven by deteriorations in hydromorphology as indicated by alterations in trait modalities. Additionally, we identified that angling played a considerable role for fish introductions. Our results support previous findings that the community turnover from native to non-native species can be facilitated by, for example, deteriorating environmental conditions and that variations in communities are multifaceted requiring more indicators than single metrics.
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Affiliation(s)
- Phillip J Haubrock
- Department of River Ecology and Conservation, Senckenberg Research Institute and Natural History Museum Frankfurt, Gelnhausen, Germany
- Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in České Budějovice, Vodňany, Czech Republic
| | - Francesca Pilotto
- Environmental Archaeology Lab, Department of Historical, Philosophical and Religious Studies, Umeå University, Umeå, Sweden
| | - Gianna Innocenti
- Museo di Storia Naturale 'La Specola', Sistema Museale di Ateneo dell'Università di Firenze, Firenze, Italy
| | - Simone Cianfanelli
- Museo di Storia Naturale 'La Specola', Sistema Museale di Ateneo dell'Università di Firenze, Firenze, Italy
| | - Peter Haase
- Department of River Ecology and Conservation, Senckenberg Research Institute and Natural History Museum Frankfurt, Gelnhausen, Germany
- Faculty of Biology, University of Duisburg-Essen, Essen, Germany
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7
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Anton A, Geraldi NR, Ricciardi A, Dick JTA. Global determinants of prey naiveté to exotic predators. Proc Biol Sci 2020; 287:20192978. [PMID: 32486977 DOI: 10.1098/rspb.2019.2978] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Prey naiveté-the failure of prey to recognize novel predators as threats-is thought to exacerbate the impact that exotic predators exert on prey populations. Prey naiveté varies under the influence of eco-evolutionary mediating factors, such as biogeographic isolation and prey adaptation, although an overall quantification of their influence is lacking. We conducted a global meta-analysis to test the effects of several hypothesized mediating factors on the expression of prey naiveté. Prey were overall naive towards exotic predators in marine and freshwater systems but not in terrestrial systems. Prey naiveté was most pronounced towards exotic predators that did not have native congeneric relatives in the recipient community. Time since introduction was relevant, as prey naiveté declined with the number of generations since introduction; on average, around 200 generations may be required to erode naiveté sufficiently for prey to display antipredator behaviour towards exotic predators. Given that exotic predators are a major cause of extinction, the global predictors and trends of prey naiveté presented here can inform efforts to meet conservation targets.
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Affiliation(s)
- Andrea Anton
- School of Biological Sciences, Queen's University Belfast, Northern Ireland, UK.,Red Sea Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Nathan R Geraldi
- School of Biological Sciences, Queen's University Belfast, Northern Ireland, UK.,Red Sea Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | | | - Jaimie T A Dick
- School of Biological Sciences, Queen's University Belfast, Northern Ireland, UK.,Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Northern Ireland, UK
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8
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9
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DeRoy EM, Scott R, Hussey NE, MacIsaac HJ. Density dependence mediates the ecological impact of an invasive fish. DIVERS DISTRIB 2020. [DOI: 10.1111/ddi.13063] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- Emma M. DeRoy
- Great Lakes Institute for Environmental Research University of Windsor Windsor Ontario Canada
| | - Ryan Scott
- Department of Computer Science University of Windsor Windsor Ontario Canada
| | - Nigel E. Hussey
- Department of Biological Sciences University of Windsor Windsor Ontario Canada
| | - Hugh J. MacIsaac
- Great Lakes Institute for Environmental Research University of Windsor Windsor Ontario Canada
- School of Ecology and Environmental Science Yunnan University Kunming China
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10
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Dickey JWE, Cuthbert RN, South J, Britton JR, Caffrey J, Chang X, Crane K, Coughlan NE, Fadaei E, Farnsworth KD, Ismar-Rebitz SMH, Joyce PWS, Julius M, Laverty C, Lucy FE, MacIsaac HJ, McCard M, McGlade CLO, Reid N, Ricciardi A, Wasserman RJ, Weyl OLF, Dick JTA. On the RIP: using Relative Impact Potential to assess the ecological impacts of invasive alien species. NEOBIOTA 2020. [DOI: 10.3897/neobiota.55.49547] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
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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11
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Bunke M, Dick JTA, Hatcher MJ, Dunn AM. Parasites influence cannibalistic and predatory interactions within and between native and invasive amphipods. DISEASES OF AQUATIC ORGANISMS 2019; 136:79-86. [PMID: 31575836 DOI: 10.3354/dao03415] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In Northern Ireland, the amphipods Gammarus duebeni celticus (native) and G. pulex (invasive) coexist in some places, whilst in others the native species has been replaced by the invader. We explored the role of parasites in mediating interactions between these amphipods, which demonstrate mutual intraguild predation (IGP: predation between animals that also compete for prey). IGP and cannibalism can be important factors in structuring populations and communities. We investigated the effects of parasitism on rates of IGP between G. d. celticus and G. pulex and on cannibalism within each species by comparing functional responses (FRs: relationships between the use of a prey resource and its availability). Infection with the microsporidian Pleistophora mulleri caused an increase in IGP and cannibalism by G. d. celticus, which showed increased attack rates and reduced prey handling times. In contrast, infection with the acanthocephalan parasite Echinorhynchus truttae did not alter IGP or cannibalism by G. pulex. A prey preference experiment revealed that both amphipods were more likely to feed on heterospecific rather than conspecific prey, and this was also corroborated by the fact that overall IGP FRs were higher than cannibalism FRs. This may be selectively advantageous, as feeding on heterospecific prey removes possible competitors without the risk of consuming juvenile kin or acquiring parasites from infected conspecifics. Infection of the native G. d. celticus with P. mulleri enhanced IGP on the invasive G. pulex, which is likely to facilitate the coexistence of the 2 species.
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Affiliation(s)
- Mandy Bunke
- School of Biology, Faculty of Biological Sciences University of Leeds, Leeds, LS2 9JT, UK
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12
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Dalal A, Cuthbert RN, Dick JT, Gupta S. Water depth-dependent notonectid predatory impacts across larval mosquito ontogeny. PEST MANAGEMENT SCIENCE 2019; 75:2610-2617. [PMID: 30729643 DOI: 10.1002/ps.5368] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 02/03/2019] [Accepted: 02/04/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Context-dependencies can modulate the strength of predatory interactions and often remain unquantified. In particular, differences in water depth within aquatic systems could influence predator efficiencies towards prey which utilise three-dimensional space through the water column. Differences in prey size could drive prey size-refuge effects, influencing the efficacy of natural enemies towards vector species. We thus quantify the predatory impact of two notonectid predators, Anisops breddini and Anisops sardeus, towards four different larval instars of Culex quinquefasciatus prey across a water depth gradient, using functional responses (FRs). RESULTS Consumption rates differed significantly between the predators, and interspecific differences in responses to variations in water depth were emergent. Both notonectids were able to handle C. quinquefasciatus prey across all instar stages, yet predation rates were generally higher towards early as opposed to late instar prey. Anisops sardeus was most voracious, and differential predation rates of this species were most pronounced in shallow waters. Type II FRs were displayed by notonectids in the majority of treatments; however, Type III FRs were emergent in specific treatment groups, with potential implications for prey population stability. Both capture rates and handling times were often greater at greater depths, and thus maximum feeding rates reduced as depth increased. Our results further demonstrate substantial predatory impacts of notonectid predators towards mosquito, and quantify biotic and abiotic context-dependencies which modulate their impact. CONCLUSION Given notonectids are capable of aerial dispersal between ephemeral aquatic habitats of varied volumes, their promotion in aquatic systems could help reduce proliferations of medically important mosquitoes. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Arpita Dalal
- Department of Ecology and Environmental Science, Assam University, Silchar, India
| | - Ross N Cuthbert
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Medical Biology Centre, Belfast, UK
| | - Jaimie Ta Dick
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Medical Biology Centre, Belfast, UK
| | - Susmita Gupta
- Department of Ecology and Environmental Science, Assam University, Silchar, India
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Sheath DJ, Dick JTA, Dickey JWE, Guo Z, Andreou D, Britton JR. Winning the arms race: host-parasite shared evolutionary history reduces infection risks in fish final hosts. Biol Lett 2019; 14:rsbl.2018.0363. [PMID: 30045905 PMCID: PMC6083226 DOI: 10.1098/rsbl.2018.0363] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 06/27/2018] [Indexed: 12/18/2022] Open
Abstract
Parasite manipulation of intermediate hosts evolves to increase parasite trophic transmission to final hosts, yet counter selection should act on the final host to reduce infection risk and costs. However, determining who wins this arms race and to what extent is challenging. Here, for the first time, comparative functional response analysis quantified final host consumption patterns with respect to intermediate host parasite status. Experiments used two evolutionarily experienced fish hosts and two naive hosts, and their amphipod intermediate hosts of the acanthocephalan parasite Pomphorhynchus tereticollis. The two experienced fish consumed significantly fewer infected than non-infected prey, with lower attack rates and higher handling times towards the former. Conversely, the two naive fish consumed similar numbers of infected and non-infected prey at most densities, with similar attack rates and handling times towards both. Thus, evolutionarily experienced final hosts can reduce their infection risks and costs via reduced intermediate host consumption, with this not apparent in naive hosts.
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Affiliation(s)
- Danny J Sheath
- Department of Life and Environmental Sciences, Faculty of Science and Technology, Bournemouth University, Poole, UK.,Institute of Global Health, University of Geneva, Geneva, Switzerland
| | - Jaimie T A Dick
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - James W E Dickey
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Zhiqiang Guo
- Department of Life and Environmental Sciences, Faculty of Science and Technology, Bournemouth University, Poole, UK.,State Key Laboratory of Marine Resource Utilization in South China Sea, College of Oceanology, Hainan University, Haikou 570228, People's Republic of China
| | - Demetra Andreou
- Department of Life and Environmental Sciences, Faculty of Science and Technology, Bournemouth University, Poole, UK
| | - J Robert Britton
- Department of Life and Environmental Sciences, Faculty of Science and Technology, Bournemouth University, Poole, UK
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14
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Cuthbert RN, Dickey JWE, Coughlan NE, Joyce PWS, Dick JTA. The Functional Response Ratio (FRR): advancing comparative metrics for predicting the ecological impacts of invasive alien species. Biol Invasions 2019. [DOI: 10.1007/s10530-019-02002-z] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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16
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Intra- and intercontinental variation in the functional responses of a high impact alien invasive fish. Biol Invasions 2019. [DOI: 10.1007/s10530-019-01932-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Tekin E, Yeh PJ, Savage VM. General Form for Interaction Measures and Framework for Deriving Higher-Order Emergent Effects. Front Ecol Evol 2018. [DOI: 10.3389/fevo.2018.00166] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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18
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Dickey JW, Cuthbert RN, Rea M, Laverty C, Crane K, South J, Briski E, Chang X, Coughlan NE, MacIsaac HJ, Ricciardi A, Riddell GE, Xu M, Dick JT. Assessing the relative potential ecological impacts and invasion risks of emerging and future invasive alien species. NEOBIOTA 2018. [DOI: 10.3897/neobiota.39.28519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Invasive alien species (IAS) cause myriad negative impacts, such as ecosystem disruption, human, animal and plant health issues, economic damage and species extinctions. There are many sources of emerging and future IAS, such as the poorly regulated international pet trade. However, we lack methodologies to predict the likely ecological impacts and invasion risks of such IAS which have little or no informative invasion history. This study develops the Relative Impact Potential (RIP) metric, a new measure of ecological impact that incorporates per capita functional responses (FRs) and proxies for numerical responses (NRs) associated with emerging invaders. Further, as propagule pressure is a determinant of invasion risk, we combine the new measure of Pet Propagule Pressure (PPP) with RIP to arrive at a second novel metric, Relative Invasion Risk (RIR). We present methods to calculate these metrics and to display the outputs on intuitive bi- and triplots. We apply RIP/RIR to assess the potential ecological impacts and invasion risks of four commonly traded pet turtles that represent emerging IAS: Trachemysscriptascripta, the yellow-bellied slider; T.s.troostii, the Cumberland slider; Sternotherusodoratus, the common musk turtle; and Kinosternonsubrubrum, the Eastern mud turtle. The high maximum feeding rate and high attack rate of T.s.scripta, combined with its numerical response proxies of lifespan and fecundity, gave it the highest impact potential. It was also the second most readily available according to our UK surveys, indicating a high invasion risk. Despite having the lowest maximum feeding rate and attack rate, S.odoratus has a high invasion risk due to high availability and we highlight this species as requiring monitoring. The RIP/RIR metrics offer two universally applicable methods to assess potential impacts and risks associated with emerging and future invaders in the pet trade and other sources of future IAS. These metrics highlight T.s.scripta as having high impact and invasion risk, corroborating its position on the EU list of 49 IAS of Union Concern. This suggests our methodology and metrics have great potential to direct future IAS policy decisions and management. This, however, relies on collation and generation of new data on alien species functional responses, numerical responses and their proxies, and imaginative measures of propagule pressure.
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19
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Dickey JW, Cuthbert RN, Rea M, Laverty C, Crane K, South J, Briski E, Chang X, Coughlan NE, MacIsaac HJ, Ricciardi A, Riddell GE, Xu M, Dick JT. Assessing the relative potential ecological impacts and invasion risks of emerging and future invasive alien species. NEOBIOTA 2018. [DOI: 10.3897/neobiota.40.28519] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Invasive alien species (IAS) cause myriad negative impacts, such as ecosystem disruption, human, animal and plant health issues, economic damage and species extinctions. There are many sources of emerging and future IAS, such as the poorly regulated international pet trade. However, we lack methodologies to predict the likely ecological impacts and invasion risks of such IAS which have little or no informative invasion history. This study develops the Relative Impact Potential (RIP) metric, a new measure of ecological impact that incorporates per capita functional responses (FRs) and proxies for numerical responses (NRs) associated with emerging invaders. Further, as propagule pressure is a determinant of invasion risk, we combine the new measure of Pet Propagule Pressure (PPP) with RIP to arrive at a second novel metric, Relative Invasion Risk (RIR). We present methods to calculate these metrics and to display the outputs on intuitive bi- and triplots. We apply RIP/RIR to assess the potential ecological impacts and invasion risks of four commonly traded pet turtles that represent emerging IAS: Trachemysscriptascripta, the yellow-bellied slider; T.s.troostii, the Cumberland slider; Sternotherusodoratus, the common musk turtle; and Kinosternonsubrubrum, the Eastern mud turtle. The high maximum feeding rate and high attack rate of T.s.scripta, combined with its numerical response proxies of lifespan and fecundity, gave it the highest impact potential. It was also the second most readily available according to our UK surveys, indicating a high invasion risk. Despite having the lowest maximum feeding rate and attack rate, S.odoratus has a high invasion risk due to high availability and we highlight this species as requiring monitoring. The RIP/RIR metrics offer two universally applicable methods to assess potential impacts and risks associated with emerging and future invaders in the pet trade and other sources of future IAS. These metrics highlight T.s.scripta as having high impact and invasion risk, corroborating its position on the EU list of 49 IAS of Union Concern. This suggests our methodology and metrics have great potential to direct future IAS policy decisions and management. This, however, relies on collation and generation of new data on alien species functional responses, numerical responses and their proxies, and imaginative measures of propagule pressure.
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20
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Hoxha T, Crookes S, Lejeusne C, Dick JTA, Chang X, Bouchemousse S, Cuthbert RN, MacIsaac HJ. Comparative feeding rates of native and invasive ascidians. MARINE POLLUTION BULLETIN 2018; 135:1067-1071. [PMID: 30301002 DOI: 10.1016/j.marpolbul.2018.08.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 08/17/2018] [Accepted: 08/19/2018] [Indexed: 06/08/2023]
Abstract
Ascidians have a recent history of species introductions globally, often with strong ecological impacts. Comparisons of per capita effects of invaders and comparable natives are useful to assess such impacts. Here, we explore ingestion rates (IR) and clearance rates (CR) of Ciona intestinalis and Ciona robusta, co-occurring native and non-native ascidians, respectively, from Brittany, France. IR was positively related to food concentration, with the invader responding more strongly to increasing food concentration. CR also differed by species, with the invader demonstrating higher values. C. robusta exhibited a higher functional response (Type I) than did C. intestinalis (Type II). Relative impact measured using seasonal abundance and IR revealed that C. robusta has a much greater impact than C. intestinalis at all food concentrations tested, though the former has a constrained distribution which limits its regional impact. Nevertheless, when abundant, we expect C. robusta to exert a greater impact on algal foods.
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Affiliation(s)
- Tedi Hoxha
- Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario N9B 3P4, Canada
| | - Steve Crookes
- Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario N9B 3P4, Canada; Biodiversity Institute of Ontario, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Christophe Lejeusne
- Sorbonne Université, CNRS, UMR 7144 AD2M, Station Biologique de Roscoff, Place Georges Teissier, 29680 Roscoff, France
| | - Jaimie T A Dick
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Belfast, Northern Ireland BT9 7BL, UK
| | - Xuexiu Chang
- School of Ecology and Environmental Sciences, Yunnan University, Kunming 650091, China
| | - Sarah Bouchemousse
- Sorbonne Université, CNRS, UMR 7144 AD2M, Station Biologique de Roscoff, Place Georges Teissier, 29680 Roscoff, France; Department of Biology, University of Fribourg, Chemin du musée 10, 1700 Fribourg, Switzerland
| | - Ross N Cuthbert
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, Belfast, Northern Ireland BT9 7BL, UK
| | - Hugh J MacIsaac
- Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario N9B 3P4, Canada; School of Ecology and Environmental Sciences, Yunnan University, Kunming 650091, China.
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Howard BR, Barrios-O’Neill D, Alexander ME, Dick JT, Therriault TW, Robinson TB, Côté IM. Functional responses of a cosmopolitan invader demonstrate intraspecific variability in consumer-resource dynamics. PeerJ 2018; 6:e5634. [PMID: 30280022 PMCID: PMC6166631 DOI: 10.7717/peerj.5634] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Accepted: 08/24/2018] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Variability in the ecological impacts of invasive species across their geographical ranges may decrease the accuracy of risk assessments. Comparative functional response analysis can be used to estimate invasive consumer-resource dynamics, explain impact variability, and thus potentially inform impact predictions. The European green crab (Carcinus maenas) has been introduced on multiple continents beyond its native range, although its ecological impacts appear to vary among populations and regions. Our aim was to test whether consumer-resource dynamics under standardized conditions are similarly variable across the current geographic distribution of green crab, and to identify correlated morphological features. METHODS Crabs were collected from multiple populations within both native (Northern Ireland) and invasive regions (South Africa and Canada). Their functional responses to local mussels (Mytilus spp.) were tested. Attack rates and handling times were compared among green crab populations within each region, and among regions (Pacific Canada, Atlantic Canada, South Africa, and Northern Ireland). The effect of predator and prey morphology on prey consumption was investigated. RESULTS Across regions, green crabs consumed prey according to a Type II (hyperbolic) functional response curve. Attack rates (i.e., the rate at which a predator finds and attacks prey), handling times and maximum feeding rates differed among regions. There was a trend toward higher attack rates in invasive than in native populations. Green crabs from Canada had lower handling times and thus higher maximum feeding rates than those from South Africa and Northern Ireland. Canadian and Northern Ireland crabs had significantly larger claws than South African crabs. Claw size was a more important predictor of the proportion of mussels killed than prey shell strength. DISCUSSION The differences in functional response between regions reflect observed impacts of green crabs in the wild. This suggests that an understanding of consumer-resource dynamics (e.g., the per capita measure of predation), derived from simple, standardized experiments, might yield useful predictions of invader impacts across geographical ranges.
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Affiliation(s)
- Brett R. Howard
- Earth to Ocean Research Group, Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Daniel Barrios-O’Neill
- Institute for Global Food Security, School of Biological Sciences, The Queen’s University Belfast, Belfast, Northern Ireland, United Kingdom
| | - Mhairi E. Alexander
- Institute of Biomedical and Environmental Health Research (IBEHR), School of Science and Sport, University of the West of Scotland, Paisley, United Kingdom
| | - Jaimie T.A. Dick
- Institute for Global Food Security, School of Biological Sciences, The Queen’s University Belfast, Belfast, Northern Ireland, United Kingdom
| | - Thomas W. Therriault
- Pacific Biological Station, Fisheries & Oceans Canada, Nanaimo, British Columbia, Canada
| | - Tamara B. Robinson
- Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Stellenbosch, Maiteland, South Africa
| | - Isabelle M. Côté
- Earth to Ocean Research Group, Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
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22
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Cuthbert RN, Dalu T, Wasserman RJ, Dick JTA, Mofu L, Callaghan A, Weyl OLF. Intermediate predator naïveté and sex-skewed vulnerability predict the impact of an invasive higher predator. Sci Rep 2018; 8:14282. [PMID: 30250163 PMCID: PMC6155278 DOI: 10.1038/s41598-018-32728-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 09/14/2018] [Indexed: 12/03/2022] Open
Abstract
The spread of invasive species continues to reduce biodiversity across all regions and habitat types globally. However, invader impact prediction can be nebulous, and approaches often fail to integrate coupled direct and indirect invader effects. Here, we examine the ecological impacts of an invasive higher predator on lower trophic groups, further developing methodologies to more holistically quantify invader impact. We employ functional response (FR, resource use under different densities) and prey switching experiments to examine the trait- and density-mediated impacts of the invasive mosquitofish Gambusia affinis on an endemic intermediate predator Lovenula raynerae (Copepoda). Lovenula raynerae effectively consumed larval mosquitoes, but was naïve to mosquitofish cues, with attack rates and handling times of the intermediate predator unaffected by mosquitofish cue-treated water. Mosquitofish did not switch between male and female prey, consistently displaying a strong preference for female copepods. We thus demonstrate a lack of risk-reduction activity in the presence of invasive fish by L. raynerae and, in turn, high susceptibility of such intermediate trophic groups to invader impact. Further, we show that mosquitofish demonstrate sex-skewed predator selectivity towards intermediate predators of mosquito larvae, which may affect predator population demographics and, perversely, increase disease vector proliferations. We advocate the utility of FRs and prey switching combined to holistically quantify invasive species impact potential on native organisms at multiple trophic levels.
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Affiliation(s)
- Ross N Cuthbert
- Institute for Global Food Security, School of Biological Sciences, Medical Biology Centre, Queen's University Belfast, Belfast, BT9 7BL, Northern Ireland, UK. .,DST/NRF Research Chair in Inland Fisheries and Freshwater Ecology, South African Institute for Aquatic Biodiversity (SAIAB), Grahamstown, 6140, South Africa. .,Ecology and Evolutionary Biology, School of Biological Sciences, University of Reading, Harborne Building, Reading, RG6 6AS, England, UK.
| | - Tatenda Dalu
- Department of Ecology and Resource Management, University of Venda, Thohoyandou, 0950, South Africa.,South African Institute for Aquatic Biodiversity (SAIAB), Grahamstown, 6140, South Africa
| | - Ryan J Wasserman
- Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology, P. Bag 16, Palapye, Botswana.,South African Institute for Aquatic Biodiversity (SAIAB), Grahamstown, 6140, South Africa
| | - Jaimie T A Dick
- Institute for Global Food Security, School of Biological Sciences, Medical Biology Centre, Queen's University Belfast, Belfast, BT9 7BL, Northern Ireland, UK
| | - Lubabalo Mofu
- South African Institute for Aquatic Biodiversity (SAIAB), Grahamstown, 6140, South Africa
| | - Amanda Callaghan
- Ecology and Evolutionary Biology, School of Biological Sciences, University of Reading, Harborne Building, Reading, RG6 6AS, England, UK
| | - Olaf L F Weyl
- DST/NRF Research Chair in Inland Fisheries and Freshwater Ecology, South African Institute for Aquatic Biodiversity (SAIAB), Grahamstown, 6140, South Africa
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23
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Liversage K, Nurkse K, Kotta J, Järv L. Environmental heterogeneity associated with European perch (Perca fluviatilis) predation on invasive round goby (Neogobius melanostomus). MARINE ENVIRONMENTAL RESEARCH 2017; 132:132-139. [PMID: 29132920 DOI: 10.1016/j.marenvres.2017.10.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 10/28/2017] [Accepted: 10/29/2017] [Indexed: 06/07/2023]
Abstract
Spatiotemporal environmental variation affects fish feeding behaviour and capacity for piscivorous control of prey populations, which is important for management when prey include invasive species causing ecosystem impacts. We assessed gut-contents of an important piscivore (European perch Perca fluviatilis) over two years, and analysed variables affecting initiation and amounts of feeding, focusing on an important invasive prey species, round goby (Neogobius melanostomus). We show that predation is primarily controlled by variation of physical and habitat characteristics surrounding perch. Fish prey began being incorporated in diets of perch that were >150 mm, with temperature conditions controlling initiation of their feeding. Total amounts of fish in perch diets, and amounts of round goby individually, were strongly affected by macrophyte cover; seldom were fish present in perch stomachs when macrophyte cover was >40%. Environmental densities of round goby were related to multivariate diet composition in ways that suggest predation of some native species may be relaxed in areas of dense round goby populations. There was evidence that perch predation is unlikely to limit populations of the invader, as there was only a weak relationship between round goby densities and amounts in gut contents. The results have ecosystem management implications, because some variables found to be important could be manipulated to control round goby or other similar invaders e.g. fisheries management of native piscivore stock-density and body-size, or modification of benthic environment structure.
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Affiliation(s)
- Kiran Liversage
- Estonian Marine Institute, University of Tartu, Mäealuse 14, 12618, Tallinn, Estonia.
| | - Kristiina Nurkse
- Estonian Marine Institute, University of Tartu, Mäealuse 14, 12618, Tallinn, Estonia
| | - Jonne Kotta
- Estonian Marine Institute, University of Tartu, Mäealuse 14, 12618, Tallinn, Estonia
| | - Leili Järv
- Estonian Marine Institute, University of Tartu, Mäealuse 14, 12618, Tallinn, Estonia
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24
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Médoc V, Thuillier L, Spataro T. Opportunistic omnivory impairs our ability to predict invasive species impacts from functional response comparisons. Biol Invasions 2017. [DOI: 10.1007/s10530-017-1628-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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25
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Beppler C, Tekin E, Mao Z, White C, McDiarmid C, Vargas E, Miller JH, Savage VM, Yeh PJ. Uncovering emergent interactions in three-way combinations of stressors. J R Soc Interface 2017; 13:rsif.2016.0800. [PMID: 27974577 DOI: 10.1098/rsif.2016.0800] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 11/23/2016] [Indexed: 11/12/2022] Open
Abstract
Understanding how multiple stressors interact is needed to predict the dynamical outcomes of diverse biological systems, ranging from drug-resistant pathogens that are combated and treated with combination drug therapies to ecosystems impacted by environmental toxicants or disturbances. Nevertheless, extensive studies of higher-order (more than two component) interactions have been lacking. Here, we conduct experiments using 20 three-drug combinations and their effects on the bacterial growth of Escherichia coli We report our measurements of growth rates in single, pairwise and triple-drug combinations. To uncover emergent interactions, we derive a simple framework to calculate expectations for three-way interactions based on the measured impact of each individual stressor and of each pairwise interaction. Using our framework, we find that (i) emergent antagonisms are more common than emergent synergies and (ii) emergent antagonisms are more common and emergent synergies are more rare than would be inferred from measures of net effects that do not disentangle pairwise interactions from three-way interactions.
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Affiliation(s)
- Casey Beppler
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, USA.,Department of Microbiology, Immunology, and Molecular Genetics, The Molecular Biology Institute, University of California, Los Angeles, CA 90095, USA
| | - Elif Tekin
- Department of Biomathematics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Zhiyuan Mao
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, USA.,Department of Microbiology, Immunology, and Molecular Genetics, The Molecular Biology Institute, University of California, Los Angeles, CA 90095, USA
| | - Cynthia White
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, USA
| | - Cassandra McDiarmid
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, USA
| | - Emily Vargas
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, USA
| | - Jeffrey H Miller
- Department of Microbiology, Immunology, and Molecular Genetics, The Molecular Biology Institute, University of California, Los Angeles, CA 90095, USA
| | - Van M Savage
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, USA.,Department of Biomathematics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA.,Santa Fe Institute, Santa Fe, NM 87501, USA
| | - Pamela J Yeh
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, USA
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26
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Penk M, Saul W, Dick JT, Donohue I, Alexander ME, Linzmaier S, Jeschke JM. A trophic interaction framework for identifying the invasive capacity of novel organisms. Methods Ecol Evol 2017. [DOI: 10.1111/2041-210x.12817] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marcin Penk
- School of Natural SciencesTrinity College Dublin Dublin Ireland
- Department of Biology, Chemistry, PharmacyInstitute of BiologyFreie Universität Berlin Berlin Germany
| | - Wolf‐Christian Saul
- Department of Biology, Chemistry, PharmacyInstitute of BiologyFreie Universität Berlin Berlin Germany
- Leibniz‐Institute of Freshwater Ecology and Inland Fisheries (IGB) Berlin Germany
- Berlin‐Brandenburg Institute of Advanced Biodiversity Research (BBIB) Berlin Germany
- Centre for Invasion Biology (CIB)Department of Botany and Zoology & Department of Mathematical SciencesStellenbosch University Matieland South Africa
| | - Jaimie T.A. Dick
- Institute for Global Food SecuritySchool of Biological SciencesQueen's University Belfast Belfast UK
| | - Ian Donohue
- School of Natural SciencesTrinity College Dublin Dublin Ireland
| | - Mhairi E. Alexander
- Institute for Biomedical and Environmental Health Research (IBEHR)School of Science and SportUniversity of the West of Scotland Paisley UK
| | - Stefan Linzmaier
- Department of Biology, Chemistry, PharmacyInstitute of BiologyFreie Universität Berlin Berlin Germany
- Leibniz‐Institute of Freshwater Ecology and Inland Fisheries (IGB) Berlin Germany
- Berlin‐Brandenburg Institute of Advanced Biodiversity Research (BBIB) Berlin Germany
| | - Jonathan M. Jeschke
- Department of Biology, Chemistry, PharmacyInstitute of BiologyFreie Universität Berlin Berlin Germany
- Leibniz‐Institute of Freshwater Ecology and Inland Fisheries (IGB) Berlin Germany
- Berlin‐Brandenburg Institute of Advanced Biodiversity Research (BBIB) Berlin Germany
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27
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Assessing the ecological impacts of invasive species based on their functional responses and abundances. Biol Invasions 2017. [DOI: 10.1007/s10530-017-1378-4] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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29
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Dick JT, Laverty C, Lennon JJ, Barrios-O'Neill D, Mensink PJ, Robert Britton J, Médoc V, Boets P, Alexander ME, Taylor NG, Dunn AM, Hatcher MJ, Rosewarne PJ, Crookes S, MacIsaac HJ, Xu M, Ricciardi A, Wasserman RJ, Ellender BR, Weyl OL, Lucy FE, Banks PB, Dodd JA, MacNeil C, Penk MR, Aldridge DC, Caffrey JM. Invader Relative Impact Potential: a new metric to understand and predict the ecological impacts of existing, emerging and future invasive alien species. J Appl Ecol 2017. [DOI: 10.1111/1365-2664.12849] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Jaimie T.A. Dick
- Institute for Global Food Security; School of Biological Sciences; Queen's University Belfast; MBC, 97 Lisburn Road Belfast BT9 7BL UK
| | - Ciaran Laverty
- Institute for Global Food Security; School of Biological Sciences; Queen's University Belfast; MBC, 97 Lisburn Road Belfast BT9 7BL UK
| | - Jack J. Lennon
- Institute for Global Food Security; School of Biological Sciences; Queen's University Belfast; MBC, 97 Lisburn Road Belfast BT9 7BL UK
| | - Daniel Barrios-O'Neill
- Institute for Global Food Security; School of Biological Sciences; Queen's University Belfast; MBC, 97 Lisburn Road Belfast BT9 7BL UK
| | - Paul J. Mensink
- Institute for Global Food Security; School of Biological Sciences; Queen's University Belfast; MBC, 97 Lisburn Road Belfast BT9 7BL UK
| | - J. Robert Britton
- Department of Life and Environmental Sciences; Faculty of Science and Technology; Bournemouth University; Fern Barrow, Poole Dorset BH12 5BB UK
| | - Vincent Médoc
- Institute of Ecology and Environmental Sciences; Université Pierre et Marie Curie (Paris 6); 75005 Paris France
| | - Pieter Boets
- Provinciaal Centrum voor Milieuonderzoek; Godshuizenlaan 95 9000 Ghent Belgium
| | - Mhairi E. Alexander
- Institute for Biomedical and Environmental Health Research (IBEHR); School of Science and Sport; University of the West of Scotland; Paisley PA1 2BE UK
| | - Nigel G. Taylor
- School of Biology; Faculty of Biological Sciences; University of Leeds; Leeds LS2 9JT UK
| | - Alison M. Dunn
- School of Biology; Faculty of Biological Sciences; University of Leeds; Leeds LS2 9JT UK
| | - Melanie J. Hatcher
- School of Biology; Faculty of Biological Sciences; University of Leeds; Leeds LS2 9JT UK
| | - Paula J. Rosewarne
- School of Biology; Faculty of Biological Sciences; University of Leeds; Leeds LS2 9JT UK
| | - Steven Crookes
- Great Lakes Institute for Environmental Research; University of Windsor; Windsor ON N9B 3P4 Canada
| | - Hugh J. MacIsaac
- Great Lakes Institute for Environmental Research; University of Windsor; Windsor ON N9B 3P4 Canada
| | - Meng Xu
- Pearl River Fisheries Research Institute; Chinese Academy of Fishery Sciences; Key Laboratory of Tropical and Subtropical Fishery Resource Application and Cultivation; Ministry of Agriculture; Guangzhou 510380 China
| | - Anthony Ricciardi
- Redpath Museum; McGill University; 859 Sherbrooke Street West Montreal QC H3A 0C4 Canada
| | - Ryan J. Wasserman
- South African Institute for Aquatic Biodiversity (SAIAB); P. Bag 1015 Grahamstown 6140 South Africa
- Centre for Invasion Biology; South African Institute for Aquatic Biodiversity (SAIAB); P. Bag 1015 Grahamstown 6140 South Africa
| | - Bruce R. Ellender
- South African Institute for Aquatic Biodiversity (SAIAB); P. Bag 1015 Grahamstown 6140 South Africa
- Centre for Invasion Biology; South African Institute for Aquatic Biodiversity (SAIAB); P. Bag 1015 Grahamstown 6140 South Africa
| | - Olaf L.F. Weyl
- South African Institute for Aquatic Biodiversity (SAIAB); P. Bag 1015 Grahamstown 6140 South Africa
- Centre for Invasion Biology; South African Institute for Aquatic Biodiversity (SAIAB); P. Bag 1015 Grahamstown 6140 South Africa
| | - Frances E. Lucy
- Department of Life and Environmental Sciences; Faculty of Science and Technology; Bournemouth University; Fern Barrow, Poole Dorset BH12 5BB UK
- Centre for Environmental Research, Innovation & Sustainability; Institute of Technology Sligo; Ash Lane, Co. Sligo Ireland
| | - Peter B. Banks
- School of Life and Environmental Sciences; The University of Sydney; Science Road Cottage A10 Camperdown NSW 2006 Australia
| | - Jennifer A. Dodd
- Scottish Centre for Ecology & the Natural Environment; IBAHCM; University of Glasgow; Rowardennan Glasgow G63 0AW UK
| | - Calum MacNeil
- Department of Environment, Food and Agriculture; This Slieau Whallian; Foxdale Road St. Johns IM4 3AS Isle of Man
| | - Marcin R. Penk
- Department of Zoology; School of Natural Sciences; Trinity College Dublin; Dublin 2 Ireland
| | - David C. Aldridge
- Department of Zoology; University of Cambridge; David Attenborough Building, Downing Street Cambridge CB2 3EJ UK
| | - Joseph M. Caffrey
- Department of Life and Environmental Sciences; Faculty of Science and Technology; Bournemouth University; Fern Barrow, Poole Dorset BH12 5BB UK
- INVAS Biosecurity; 6 Lower Ballymount Road, Walkinstown Dublin 12 Ireland
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31
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Jackson M, Wasserman R, Grey J, Ricciardi A, Dick J, Alexander M. Novel and Disrupted Trophic Links Following Invasion in Freshwater Ecosystems. ADV ECOL RES 2017. [DOI: 10.1016/bs.aecr.2016.10.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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32
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Wasserman RJ, Alexander ME, Dalu T, Ellender BR, Kaiser H, Weyl OLF. Using functional responses to quantify interaction effects among predators. Funct Ecol 2016. [DOI: 10.1111/1365-2435.12682] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ryan J. Wasserman
- South African Institute for Aquatic Biodiversity (SAIAB) P. Bag 1015 Grahamstown 6140 South Africa
- Centre for Invasion Biology South African Institute for Aquatic Biodiversity (SAIAB) P. Bag 1015 Grahamstown 6140 South Africa
| | - Mhairi E. Alexander
- Centre for Invasion Biology South African Institute for Aquatic Biodiversity (SAIAB) P. Bag 1015 Grahamstown 6140 South Africa
- Institute for Biomedical and Environmental Health Research (IBEHR) School of Science and Sport University of the West of Scotland Paisley PA1 2BE ScotlandUK
- Department of Botany and Zoology Centre for Invasion Biology Stellenbosch University Matieland 7602 South Africa
| | - Tatenda Dalu
- Department of Zoology and Entomology Rhodes University P.O. Box 94 Grahamstown 6140 South Africa
| | - Bruce R. Ellender
- South African Institute for Aquatic Biodiversity (SAIAB) P. Bag 1015 Grahamstown 6140 South Africa
- Centre for Invasion Biology South African Institute for Aquatic Biodiversity (SAIAB) P. Bag 1015 Grahamstown 6140 South Africa
| | - Horst Kaiser
- Department of Ichthyology and Fisheries Science Rhodes University P.O. Box 94 Grahamstown 6140 South Africa
| | - Olaf L. F. Weyl
- South African Institute for Aquatic Biodiversity (SAIAB) P. Bag 1015 Grahamstown 6140 South Africa
- Centre for Invasion Biology South African Institute for Aquatic Biodiversity (SAIAB) P. Bag 1015 Grahamstown 6140 South Africa
- Department of Ichthyology and Fisheries Science Rhodes University P.O. Box 94 Grahamstown 6140 South Africa
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Barrios-O'Neill D, Kelly R, Dick JTA, Ricciardi A, MacIsaac HJ, Emmerson MC. On the context-dependent scaling of consumer feeding rates. Ecol Lett 2016; 19:668-78. [DOI: 10.1111/ele.12605] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 02/23/2016] [Accepted: 03/11/2016] [Indexed: 11/30/2022]
Affiliation(s)
- Daniel Barrios-O'Neill
- Institute for Global Food Security; School of Biological Sciences; Queen's University Belfast; 97 Lisburn Road Belfast BT9 7BL Northern Ireland
| | - Ruth Kelly
- Institute for Global Food Security; School of Biological Sciences; Queen's University Belfast; 97 Lisburn Road Belfast BT9 7BL Northern Ireland
| | - Jaimie T. A. Dick
- Institute for Global Food Security; School of Biological Sciences; Queen's University Belfast; 97 Lisburn Road Belfast BT9 7BL Northern Ireland
| | - Anthony Ricciardi
- Redpath Museum; McGill University; 859 Sherbrooke Street West Montreal QC H3AOC4 Canada
| | - Hugh J. MacIsaac
- Great Lakes Institute for Environmental Research; University of Windsor; Windsor ON N9B 3P4 Canada
| | - Mark C. Emmerson
- Institute for Global Food Security; School of Biological Sciences; Queen's University Belfast; 97 Lisburn Road Belfast BT9 7BL Northern Ireland
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Wasserman RJ, Alexander ME, Weyl OLF, Barrios-O'Neill D, Froneman PW, Dalu T. Emergent effects of structural complexity and temperature on predator-prey interactions. Ecosphere 2016. [DOI: 10.1002/ecs2.1239] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Ryan J. Wasserman
- South African Institute for Aquatic Biodiversity (SAIAB); Private Bag 1015 Grahamstown 6140 South Africa
- Centre for Invasion Biology; South African Institute for Aquatic Biodiversity (SAIAB); Private Bag 1015 Grahamstown 6140 South Africa
| | - Mhairi E. Alexander
- Department of Botany and Zoology; Centre for Invasion Biology; Stellenbosch University; Matieland 7602 South Africa
| | - Olaf L. F. Weyl
- South African Institute for Aquatic Biodiversity (SAIAB); Private Bag 1015 Grahamstown 6140 South Africa
- Centre for Invasion Biology; South African Institute for Aquatic Biodiversity (SAIAB); Private Bag 1015 Grahamstown 6140 South Africa
| | - Daniel Barrios-O'Neill
- Institute for Global Food Security; School of Biological Sciences; Queens University Belfast; 97 Lisburn Road Belfast BT9 7BL UK
| | - P. William Froneman
- Department of Zoology and Entomology; Rhodes University; P.O. Box 94 Grahamstown 6140 South Africa
| | - Tatenda Dalu
- Department of Zoology and Entomology; Rhodes University; P.O. Box 94 Grahamstown 6140 South Africa
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Comparative Functional Responses Predict the Invasiveness and Ecological Impacts of Alien Herbivorous Snails. PLoS One 2016; 11:e0147017. [PMID: 26771658 PMCID: PMC4714930 DOI: 10.1371/journal.pone.0147017] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 12/27/2015] [Indexed: 11/23/2022] Open
Abstract
Understanding determinants of the invasiveness and ecological impacts of alien species is amongst the most sought-after and urgent research questions in ecology. Several studies have shown the value of comparing the functional responses (FRs) of alien and native predators towards native prey, however, the technique is under-explored with herbivorous alien species and as a predictor of invasiveness as distinct from ecological impact. Here, in China, we conducted a mesocosm experiment to compare the FRs among three herbivorous snail species: the golden apple snail, Pomacea canaliculata, a highly invasive and high impact alien listed in “100 of the World's Worst Invasive Alien Species”; Planorbarius corneus, a non-invasive, low impact alien; and the Chinese native snail, Bellamya aeruginosa, when feeding on four locally occurring plant species. Further, by using a numerical response equation, we modelled the population dynamics of the snail consumers. For standard FR parameters, we found that the invasive and damaging alien snail had the highest “attack rates” a, shortest “handling times” h and also the highest estimated maximum feeding rates, 1/hT, whereas the native species had the lowest attack rates, longest handling times and lowest maximum feeding rates. The non-invasive, low impact alien species had consistently intermediate FR parameters. The invasive alien species had higher population growth potential than the native snail species, whilst that of the non-invasive alien species was intermediate. Thus, while the comparative FR approach has been proposed as a reliable method for predicting the ecological impacts of invasive predators, our results further suggest that comparative FRs could extend to predict the invasiveness and ecological impacts of alien herbivores and should be explored in other taxa and trophic groups to determine the general utility of the approach.
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Functional response comparisons among freshwater amphipods: ratio-dependence and higher predation for Gammarus pulex compared to the non-natives Dikerogammarus villosus and Echinogammarus berilloni. Biol Invasions 2015. [DOI: 10.1007/s10530-015-0984-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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37
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Iacarella JC, Ricciardi A. Dissolved ions mediate body mass gain and predatory response of an invasive fish. Biol Invasions 2015. [DOI: 10.1007/s10530-015-0949-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Penk M, Irvine K, Donohue I. Ecosystem-level effects of a globally spreading invertebrate invader are not moderated by a functionally similar native. J Anim Ecol 2015; 84:1628-36. [PMID: 26010042 DOI: 10.1111/1365-2656.12402] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 05/18/2015] [Indexed: 11/27/2022]
Abstract
Biological invasions are a key element of human-induced global environmental change. However, lack of knowledge of the indirect consequences of invasions, combined with poor understanding of how their ecological effects depend upon competitive attributes of the receiving community, hinders our ability to manage and predict the effects of invasive species on ecosystems. We established an experiment using a combination of both additive and substitutive experimental designs to explore the effects of the globally spreading mysid shrimp Hemimysis anomala on the biological structure of outdoor pond mesocosms in the absence and presence of a functionally similar native competitor, Mysis salemaai. The naturally smaller H. anomala had considerably stronger effects on primary producers, multiple aspects of consumer assemblages and overall biological structure of the ponds in comparison with the functionally similar native. Moreover, the magnitude of these effects was generally independent of the presence of M. salemaai and even total mysid density. Hemimysis anomala reduced both the abundance and diversity of zooplankton assemblages significantly, triggering a strong trophic cascade on phytoplankton and a simultaneous increase of benthic invertebrate biomass. These findings indicate that invasion by H. anomala may exacerbate the effects of nutrient enrichment on lakes. Our results demonstrate that introduced species can, irrespective of the presence of functionally similar natives, induce complex changes to ecosystems that reach beyond direct consumptive effects. Moreover, the cascading indirect effects of invasion can exacerbate the impacts of other stressors. Disregarding the complexity of indirect effects therefore risks underestimating significantly the global ecological footprint of biological invasions.
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Affiliation(s)
- Marcin Penk
- Department of Zoology, School of Natural Sciences, Trinity College Dublin, College Green, Dublin 2, Ireland
| | - Kenneth Irvine
- Department of Zoology, School of Natural Sciences, Trinity College Dublin, College Green, Dublin 2, Ireland.,UNESCO-IHE Institute for Water and Education, Westvest 7, 2611 AX, Delft, The Netherlands
| | - Ian Donohue
- Department of Zoology, School of Natural Sciences, Trinity College Dublin, College Green, Dublin 2, Ireland.,Trinity Centre for Biodiversity Research, Trinity College Dublin, College Green, Dublin 2, Ireland
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O'Gorman EJ. Integrating comparative functional response experiments into global change research. J Anim Ecol 2015; 83:525-7. [PMID: 26051857 DOI: 10.1111/1365-2656.12216] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 02/12/2014] [Indexed: 11/28/2022]
Abstract
There is a growing appreciation for the importance of non-consumptive effects in predator-prey interaction research, which can often outweigh the importance of direct feeding. Barrios-O'Neill et al. (2014) report a novel method to characterize such effects by comparing the functional response of native and introduced intermediate consumers in the presence and absence of a higher predator. The invader exhibited stronger direct feeding and was also more resistant to intimidation by the higher predator. This experimental framework may be incorporated into mainstream global change research, for example, to quantify the importance of non-consumptive effects for the success or failure of biological invasions.
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Affiliation(s)
- Eoin J O'Gorman
- Silwood Park Campus, Imperial College London, Buckhurst Road, Ascot, Berkshire, SL5 7PY, UK
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Paterson RA, Dick JTA, Pritchard DW, Ennis M, Hatcher MJ, Dunn AM. Predicting invasive species impacts: a community module functional response approach reveals context dependencies. J Anim Ecol 2015; 84:453-63. [PMID: 25265905 PMCID: PMC4354255 DOI: 10.1111/1365-2656.12292] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Accepted: 08/21/2014] [Indexed: 11/28/2022]
Abstract
Predatory functional responses play integral roles in predator-prey dynamics, and their assessment promises greater understanding and prediction of the predatory impacts of invasive species. Other interspecific interactions, however, such as parasitism and higher-order predation, have the potential to modify predator-prey interactions and thus the predictive capability of the comparative functional response approach. We used a four-species community module (higher-order predator; focal native or invasive predators; parasites of focal predators; native prey) to compare the predatory functional responses of native Gammarus duebeni celticus and invasive Gammarus pulex amphipods towards three invertebrate prey species (Asellus aquaticus, Simulium spp., Baetis rhodani), thus, quantifying the context dependencies of parasitism and a higher-order fish predator on these functional responses. Our functional response experiments demonstrated that the invasive amphipod had a higher predatory impact (lower handling time) on two of three prey species, which reflects patterns of impact observed in the field. The community module also revealed that parasitism had context-dependent influences, for one prey species, with the potential to further reduce the predatory impact of the invasive amphipod or increase the predatory impact of the native amphipod in the presence of a higher-order fish predator. Partial consumption of prey was similar for both predators and occurred increasingly in the order A. aquaticus, Simulium spp. and B. rhodani. This was associated with increasing prey densities, but showed no context dependencies with parasitism or higher-order fish predator. This study supports the applicability of comparative functional responses as a tool to predict and assess invasive species impacts incorporating multiple context dependencies.
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Affiliation(s)
- Rachel A Paterson
- Institute for Global Food Security, School of Biological Sciences, Queen's University BelfastBelfast, UK
- School of Biology, University of LeedsLeeds, UK
| | - Jaimie T A Dick
- Institute for Global Food Security, School of Biological Sciences, Queen's University BelfastBelfast, UK
| | - Daniel W Pritchard
- School of Planning, Architecture and Civil Engineering, Queen's University BelfastBelfast, UK
| | - Marilyn Ennis
- Institute for Global Food Security, School of Biological Sciences, Queen's University BelfastBelfast, UK
| | - Melanie J Hatcher
- School of Biology, University of LeedsLeeds, UK
- School of Biological Sciences, University of BristolBristol, UK
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Iacarella JC, Dick JTA, Ricciardi A. A spatio-temporal contrast of the predatory impact of an invasive freshwater crustacean. DIVERS DISTRIB 2015. [DOI: 10.1111/ddi.12318] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Affiliation(s)
- Josephine C. Iacarella
- Group for Interuniversity Research in Limnology and Aquatic Environment; McGill University; Montreal QC H3A OC4 Canada
- Redpath Museum and Department of Biology; McGill University; 859 Sherbrooke Street West Montreal QC H3A OC4 Canada
| | - Jaimie T. A. Dick
- Institute for Global Food Security; School of Biological Sciences; M.B.C.; Queen's University Belfast; 97 Lisburn Road Belfast BT9 7BL Northern Ireland UK
| | - Anthony Ricciardi
- Group for Interuniversity Research in Limnology and Aquatic Environment; McGill University; Montreal QC H3A OC4 Canada
- Redpath Museum and Department of Biology; McGill University; 859 Sherbrooke Street West Montreal QC H3A OC4 Canada
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Laverty C, Dick JTA, Alexander ME, Lucy FE. Differential ecological impacts of invader and native predatory freshwater amphipods under environmental change are revealed by comparative functional responses. Biol Invasions 2014. [DOI: 10.1007/s10530-014-0832-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Barrios‐O'Neill D, Dick JTA, Emmerson MC, Ricciardi A, MacIsaac HJ. Predator‐free space, functional responses and biological invasions. Funct Ecol 2014. [DOI: 10.1111/1365-2435.12347] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Daniel Barrios‐O'Neill
- Institute for Global Food Security School of Biological Sciences Queen's University Belfast 97 Lisburn RoadBelfast BT9 7BL UK
| | - Jaimie T. A. Dick
- Institute for Global Food Security School of Biological Sciences Queen's University Belfast 97 Lisburn RoadBelfast BT9 7BL UK
| | - Mark C. Emmerson
- Institute for Global Food Security School of Biological Sciences Queen's University Belfast 97 Lisburn RoadBelfast BT9 7BL UK
| | - Anthony Ricciardi
- Redpath Museum McGill University 859 Sherbrooke Street WestMontreal QCH3AOC4 Canada
| | - Hugh J. MacIsaac
- Great Lakes Institute for Environmental Research University of Windsor Windsor ONN9B 3P4 Canada
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MacNeil C, Dick JTA. The enemy of my enemy is my friend: intraguild predation between invaders and natives facilitates coexistence with shared invasive prey. Biol Lett 2014; 10:rsbl.2014.0398. [PMID: 25122739 DOI: 10.1098/rsbl.2014.0398] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Understanding and predicting the outcomes of biological invasions is challenging where multiple invader and native species interact. We hypothesize that antagonistic interactions between invaders and natives could divert their impact on subsequent invasive species, thus facilitating coexistence. From field data, we found that, when existing together in freshwater sites, the native amphipod Gammarus duebeni celticus and a previous invader G. pulex appear to facilitate the establishment of a second invader, their shared prey Crangonyx pseudogracilis. Indeed, the latter species was rarely found at sites where each Gammarus species was present on its own. Experiments indicated that this may be the result of G. d. celticus and G. pulex engaging in more intraguild predation (IGP) than cannibalism; when the 'enemy' of either Gammarus species was present, that is, the other Gammarus species, C. pseudogracilis significantly more often escaped predation. Thus, the presence of mutual enemies and the stronger inter- than intraspecific interactions they engage in can facilitate other invaders. With some invasive species such as C. pseudogracilis having no known detrimental effects on native species, and indeed having some positive ecological effects, we also conclude that some invasions could promote biodiversity and ecosystem functioning.
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Affiliation(s)
- Calum MacNeil
- Department of Environment, Food and Agriculture, The Isle of Man Government, Thie Slieau Whallian, Foxdale Road, St. Johns IM4 3AS, The Isle of Man, The British Isles
| | - Jaimie T A Dick
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, MBC, 97 Lisburn Road, Belfast BT9 7BL, UK
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Bovy HC, Barrios-O’Neill D, Emmerson MC, Aldridge DC, Dick JTA. Predicting the predatory impacts of the “demon shrimp” Dikerogammarus haemobaphes, on native and previously introduced species. Biol Invasions 2014. [DOI: 10.1007/s10530-014-0751-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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