Trophic ecology of invasive marbled and spiny-cheek crayfish populations

Linzmaier, Stefan M.; Musseau, Camille; Matern, Sven; Jeschke, Jonathan M.

doi:10.1007/s10530-020-02328-z

Cited by 17 publications

(17 citation statements)

References 78 publications

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“…However, the magnitude of difference in FR was only moderate and noble crayfish was estimated to be slightly more impactful on gammarid prey. Marbled crayfish currently co-occurs with invasive spiny-cheek crayfish in several lentic habitats across Europe (Linzmaier et al, 2020;Veselỳ et al, 2021); in line with field studies reporting marbled crayfish to be more carnivorous than spiny-cheek crayfish (Veselỳ et al, 2021), our results seem to indicate a somewhat stronger topdown pressure of marbled crayfish on macroinvertebrates, including mussels.…”

Section: Invader-specific Impact Potentialsupporting

confidence: 88%

Differences in the functional responses of four invasive and one native crayfish species suggest invader‐specific ecological impacts

Chucholl

Chucholl²

2021

Freshwater Biology

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1. Invasive non-native species represent a leading threat to global freshwater biodiversity and non-native crayfish species frequently cause extensive ecological damage. However, the extent to which their impact: (1) depends on invader identity and (2) differs from the natural state with native crayfish remains unclear.Comparison of the functional responses of invasive and native species represents a promising approach in this regard.2. Here, we explored whether four invasive crayfish species (calico crayfish Faxonius immunis, spiny-cheek crayfish Faxonius limosus, signal crayfish Pacifastacus leniusculus, and marbled crayfish Procambarus virginalis) in European freshwaters andThis is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Section: Invader-specific Impact Potentialsupporting

confidence: 88%

Differences in the functional responses of four invasive and one native crayfish species suggest invader‐specific ecological impacts

Chucholl

Chucholl²

2021

Freshwater Biology

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“…As expected, neutral processes mostly shaped morphological and stoichiometric trait variation for P. clarkii , which has been established more recently in our study area. Trophic trait variation was due to adaptive processes, supporting our previous interpretation: this opportunistic generalist species relies on available trophic resources, constrained by the environment (Alcorlo et al., 2004; Correia, 2003; Linzmaier et al., 2020). Surprisingly, for F. limosus , adaptive and neutral processes contributed equally to the variation in each group of traits (i.e.…”

Section: Discussionsupporting

confidence: 84%

“…this opportunistic generalist species relies on available trophic resources, constrained by the environment (Alcorlo et al, 2004;Correia, 2003;Linzmaier et al, 2020). Surprisingly, for F. limosus, adaptive and neutral processes contributed equally to the variation in each group of traits (i.e.…”

Section: Neutral Versus Adaptive Processesmentioning

confidence: 99%

Patterns and determinants of phenotypic variability within two invasive crayfish species

2021

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Knowledge on the ecological determinants and evolutionary processes shaping intraspecific variability in the wild remains scarce. It is particularly needed in the context of biological invasions to fully understand the consequences of invasive species on the functioning of recipient ecosystems. Using geometric morphometrics, stable isotopes, and elemental composition analyses, we quantified phenotypic variability (morphological, trophic, and stoichiometric traits) within and among invasive populations of two crayfish species with distinct invasion histories over 23 gravel pit lakes in southwest France. We sampled 12 populations of the red swamp crayfish (Procambarus clarkii Girard, 1852) and 11 populations of the spiny‐cheek crayfish (Faxonius limosus Rafinesque, 1817). We aimed at unravelling the ecological determinants and the mechanisms (neutral or adaptive) underlying the phenotypic variability among invasive populations. We demonstrate that, for each group of traits, P. clarkii and F. limosus display contrasting patterns of variance distribution across three ecological scales (population, sex, individual). Then, we demonstrate that P. clarkii trait variation in body morphology and stoichiometry is associated with both ecological and historical determinants (i.e. predation pressure, intraspecific invasion, and invasion age), and morphological traits in F. limosus vary with ecological factors only (i.e. predation pressure and abundance of P. clarkii). Finally, we highlight that different combinations of neutral and adaptive processes shaped the phenotypic variability in the two species, with a higher contribution of adaptive processes in F. limosus. Overall, these results indicate that F. limosus has already gone through local adaptation in the meta‐population while this has not yet occurred for P. clarkii, which was introduced later. This highlights that these two invasive species might have contrasting effects across ecological scales. Our study emphasises that studying invasive species can provide great knowledge on intraspecific variability and its ecological determinants and evolutionary processes in the wild. Our results also stress the need to focus on intraspecific variability in the context of biological invasions as it can be substantial across wide geographic areas.

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“…Among several mechanisms determining the success of invasive species is the plasticity of their diet or trophic niche (Linzmaier et al 2020, Rolla et al 2020). We show that the trophic positioning of invasive ants can change in response to local conditions.…”

Section: Discussionmentioning

confidence: 99%

Plasticity in the trophic niche of an invasive ant explains establishment success and long‐term coexistence

Balzani

Vizzini

Frizzi

et al. 2021

Oikos

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Invasive species are one of the main threats to biodiversity worldwide and the processes enabling their establishment and persistence remain poorly understood. In generalist consumers, plasticity in diet and trophic niche may play a crucial role in invasion success. There is growing evidence that invasive ants, in particular, occupy lower trophic levels in their introduced range compared to the native one, but evidences remain fragmented. We conducted stable isotope analysis at five locations distributed on two continents to infer the trophic position of the invasive ant Formica paralugubris in the native and introduced part of the range. This species forms large colonies and can be a voracious predator while feeding on sugar-based resources as well. Whereas native populations had trophic positions comparable to that of an omnivore, the introduced populations varied from being honeydew specialists to top predators, or omnivore. Where other ant species co-occurred, there was no overlap in their trophic niches, and F. paralugubris occupied the lower position, suggesting that trophic displacement may enable the coexistence of different ant species. Taken together, our results suggest that shifts in diet associated with changes in the trophic niche of introduced species might mediate invasion success and enable long-term coexistence with native species.

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Trophic ecology of invasive marbled and spiny-cheek crayfish populations

Cited by 17 publications

References 78 publications

Differences in the functional responses of four invasive and one native crayfish species suggest invader‐specific ecological impacts

Differences in the functional responses of four invasive and one native crayfish species suggest invader‐specific ecological impacts

Patterns and determinants of phenotypic variability within two invasive crayfish species

Plasticity in the trophic niche of an invasive ant explains establishment success and long‐term coexistence

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