Patterns of trophic niche divergence between invasive and native fishes in wild communities are predictable from mesocosm studies

Tran, Thi Nhat Quyen; Jackson, Michelle C.; Sheath, Danny; Verreycken, Hugo; Britton, J. Robert

doi:10.1111/1365-2656.12360

Cited by 86 publications

(138 citation statements)

References 57 publications

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“…Estimates of isotopic turnover rates are important for understanding how, for example, ontogenetic dietary shifts affect stable isotope data (e.g. Buchheister & Latour, 2010;Hertz et al, 2015), and for incorporating into the design of manipulative field studies and mesocosm experiments where the duration of the study could be confounded if they are not of sufficient length for isotopic equilibrium to be reached (Jackson et al, 2013;Tran et al, 2015). Consumer tissues tend to be considered at equilibrium with their diet after 4-5 halflives (Hobson & Clark, 1992).…”

Section: Introductionmentioning

confidence: 99%

Tissue-specific turnover rates of the nitrogen stable isotope as functions of time and growth in a cyprinid fish

Busst

Britton

2017

Hydrobiologia

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Ecological applications of stable isotope data require knowledge on the isotopic turnover rate of tissues, usually described as the isotopic half-life in days (T 0.5 ) or the change in mass (G 0.5 ). Ecological studies increasingly analyse tissues collected nondestructively, such as fish fin and scales, but there is limited knowledge on their turnover rates. Determining turnover rates in situ is challenging, with ex situ approaches preferred. Correspondingly, T 0.5 and G 0.5 of the nitrogen stable isotope (d 15 N) were determined for juvenile barbel Barbus barbus (5.5 ± 0.6 g starting weight) using a diet-switch experiment. d 15 N data from muscle, fin and scales were taken during a 125 day post diet-switch period. Whilst isotopic equilibrium was not reached in the 125 days, the d 15 N values did approach those of the new diet. The fastest turnover rates were in more metabolically active tissues, from muscle (highest) to scales (lowest). Turnover rates were relatively slow; T 0.5 was 84 (muscle) to 145 (scale) days; G 0.5 was 1.39 9 body mass (muscle) to 2.0 9 body mass (scales), with this potentially relating to the slow growth of the experimental fish. These turnover estimates across the different tissues emphasise the importance of estimating half-lives for focal taxa at species and tissue levels for ecological studies.

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Section: Introductionmentioning

confidence: 99%

Tissue-specific turnover rates of the nitrogen stable isotope as functions of time and growth in a cyprinid fish

Busst

Britton

2017

Hydrobiologia

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“…Invasive species can interact with native species at different trophic levels, rearranging food webs through species extinctions or by facilitating subsequent invasions (Strauss et al., 2006; Tran, Jackson, Sheath, Verreycken, & Britton, 2015), e.g., through the competitive displacement of native species (Li et al., 2015) or the introduction of pathogens that also attack native species (Roy et al., 2011). …”

Section: Introductionmentioning

confidence: 99%

Changes in phytophagous insect host ranges following the invasion of their community: Long‐term data for fruit flies

Masseliere

Ravigné

Facon

et al. 2017

Ecology and Evolution

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The invasion of an established community by new species can trigger changes in community structure. Invasions often occur in phytophagous insect communities, the dynamics of which are driven by the structure of the host assemblage and the presence of competitors. In this study, we investigated how a community established through successive invasions changed over time, taking the last invasion as the reference. The community included four generalist and four specialist species of Tephritidae fruit flies. We analyzed a long‐term database recording observed numbers of flies per fruit for each species on 36 host plants, over 18 years, from 1991 to 2009. Community structure before the last invasion by Bactrocera zonata in 2000 was described in relation to host plant phylogeny and resource availability. Changes in the host range of each species after the arrival of B. zonata were then documented by calculating diversity indices. The flies in the community occupied three types of niches defined on the basis of plant phylogeny (generalists, Solanaceae specialist, and Cucurbitaceae specialists). After the arrival of B. zonata, no change in the host range of specialist species was observed. However, the host ranges of two generalist species, Ceratitis quilicii and Ceratitis capitata, tended to shrink, as shown by the decreases in species richness and host plant α‐diversity. Our study shows increased host specialization by generalist phytophagous insects in the field following the arrival of an invasive species sharing part of their resources. These findings could be used to improve predictions of new interactions between invaders and recipient communities.

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“…However, this is likely to affect a greater proportion of the native recipient community, either by promoting shifts towards use of unexploited resources (Grey and Jackson, 2012) or by increasing overlap in niche space of individual species (Shea and Chesson, 2002) and thus resulting in increased interspecific competition. Conversely, reductions in trophic niche size of invasive species may lead to trophic divergence from natives, which would facilitate the invader's integration into the community and their coexistence with native recipient community (Tran et al, 2015). Therefore, quantifying the temporal patterns in trophic niche of invasive species is critical for understanding whether the consequences of the invasion on recipient communities and ecosystems may change over time.…”

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confidence: 99%

Long term patterns in the late summer trophic niche of the invasive pumpkinseed sunfishLepomis gibbosus

Gkenas

Magalhães

Domingos

et al. 2016

Knowl. Manag. Aquat. Ecosyst.

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-Quantifying the trophic dynamics of invasive species in novel habitats is important for predicting the success of potential invaders and evaluating their ecological effects. The North American pumpkinseed sunfish Lepomis gibbosus is a successful invader in Europe, where it has caused negative ecological effects primarily through trophic interactions. Here, we quantified variations in the late summer trophic niche of pumpkinseed during establishment and integration in the mainstem of the Guadiana river, using stomach content analyses over a period of 40 years. Pumpkinseed showed a shift from trophic specialization during establishment to trophic generalism during integration. These results were concomitant with an increase in diet breadth that was accompanied by higher individual diet specialization particularly in large individuals. Irrespective of their drivers, these changes in trophic niche suggest that the potential ecological effects of pumpkinseed on recipient ecosystems can vary temporally along the invasion process.Key-words: invasive species / trophic niche / diet shift / diet breadth / individual diet specialization Résumé -Tendances à long terme de la niche trophique estivale de la perche soleil Lepomis gibbosus invasive. La quantification de la dynamique trophique des espèces envahissantes dans leur aire d'introduction est importante pour prédire leur succès d'invasion et évaluer leurs potentiels effets écologiques. La perche soleil − Lepomis gibbosus − est une espèce originaire d'Amérique du Nord qui a été largement introduite en Europe où elle induit des effets écologiques négatifs principalement par des interactions trophiques. Dans cette étude, nous avons quantifié les variations de niche trophique de la perche soleil en fin d'été pendant les phases d'établissement et d'intégration dans le cours principal de la rivière Guadiana (Portugal) en comparant des contenus stomacaux sur une période de 40 ans. Nos résultats ont permis de démontrer que la perche soleil a modifié son régime alimentaire durant cette période en passant d'un régime spécialiste pendant la phase d'établissement à un régime généraliste pendant la phase d'intégration. En parallèle, nous avons également observé une augmentation de la taille de la niche trophique de la population qui était accompagnée d'une augmentation de la spécialisation trophique individuelle, notamment chez les individus les plus grands. Indépendamment des causes induisant ces changements de niche trophique, nos résultats suggèrent donc que les effets écologiques potentiels de la perche soleil sur les écosystèmes aquatiques peuvent varier pendant le processus d'invasion biologique.Mots-clés : espèce envahissante / niche trophique / régime alimentaire / spécialisation trophique individuelle

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Patterns of trophic niche divergence between invasive and native fishes in wild communities are predictable from mesocosm studies

Cited by 86 publications

References 57 publications

Tissue-specific turnover rates of the nitrogen stable isotope as functions of time and growth in a cyprinid fish

Tissue-specific turnover rates of the nitrogen stable isotope as functions of time and growth in a cyprinid fish

Changes in phytophagous insect host ranges following the invasion of their community: Long‐term data for fruit flies

Long term patterns in the late summer trophic niche of the invasive pumpkinseed sunfishLepomis gibbosus

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