Inconsistency for the niche breadth invasion success hypothesis in aquatic invertebrates

Pettitt‐Wade, Harri; Wellband, Kyle; Fisk, Aaron T.

doi:10.1002/lno.10620

Cited by 4 publications

(4 citation statements)

References 81 publications

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“…A larger SEA indicates greater diet breadth, as reported by previous studies 5 , 45 . A larger CR is expected in food webs containing multiple basal resources with varying δ 13 C values, implying a broad total range of exploited resources 27 , 31 .…”

Section: Methodssupporting

confidence: 80%

Intraspecific differences in the invasion success of the Argentine ant Linepithema humile Mayr are associated with diet breadth

Seko

Hashimoto

Koba

et al. 2021

Sci Rep

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The Argentine ant, Linepithema humile Mayr, has spread to almost all continents. In each introduced region, L. humile often forms a single large colony (supercolony), the members of which share the haplotype “LH1”, despite the presence of other supercolonies with different genetic structures. However, the mechanisms underlying the successful invasion of LH1 ants are unclear. Here, we examined whether diet breadth differs between more successful (LH1) and less successful (LH2, LH3, LH4) L. humile supercolonies in Japan to better understand the processes responsible for invasion success. The standard ellipse areas (SEAs) of δ13C and δ15N and their ranges (CR and NR) were used as diet breadth indices. The SEAs of LH1 were much larger than those of the less successful supercolonies despite no differences in the baseline SEAs of arthropods within the supercolony habitats, indicating that the invasion success of a supercolony is associated with its diet breadth. Furthermore, LH1 had a broader CR than the other supercolonies, suggesting that which might be derived from superior resource exploitation ability. Our study highlights the importance of focusing on intraspecific differences in diet breadth among supercolonies when assessing organisms that can potentially invade and become dominant in new habitats.

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Section: Methodssupporting

confidence: 80%

Intraspecific differences in the invasion success of the Argentine ant Linepithema humile Mayr are associated with diet breadth

Seko

Hashimoto

Koba

et al. 2021

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Positive relationships between niche breadth and conspecific population density (Faulks et al, 2015) have been reported, as have interspecific interactions involving related native species (Tarjuelo et al, 2017). The negative relationship between niche breadth of a native species and abundance of an invasive species has not been documented systematically in previous studies, although niche characteristics are known to be a factor in species invasions (Comte et al, 2017;Jackson et al, 2016;Pettitt-Wade et al, 2015, 2018. Niche shifts and divergences have also been described in earlier studies of gammarid communities where TA B L E 1 Results of multiple regression analyses of abundance of Gammarus pulex and G. duebeni celticus on measurements of variation in environmental heterogeneity in the River Lagan system (see Figure 1).…”

Section: Discussionmentioning

confidence: 99%

“…In contrast, Jackson et al (2016) demonstrated constriction of dietary niche in an invasive crab competing with a functionally similar native species. Pettitt‐Wade et al (2018) also highlight the inconsistency in the link between niche breadth and invasion success focusing on differences between fish and aquatic invertebrates. Herkül et al (2016) suggest that an invasive gammarid G .…”

Section: Discussionmentioning

confidence: 99%

Invader abundance and contraction of niche breadth during replacement of a native gammarid amphipod

Montgomery

Elwood

Dick

2022

Ecology and Evolution

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The introduction of non‐native species to new locations is a growing global phenomenon with major negative effects on native species and biodiversity. Such introductions potentially bring competitors into contact leading to partial or total species replacements. This creates an opportunity to study novel species interactions as they occur, with the potential to address the strength of inter‐ and intraspecific interactions, most notably competition. Such potential has often not been realized, however, due to the difficulties inherent in detecting rapid and spatially expansive species interactions under natural field conditions. The invasive amphipod crustacean Gammarus pulex has replaced a native species, Gammarus duebeni celticus, in river and lake systems across Europe. This replacement process is at least partially driven by differential parasitism, cannibalism, and intraguild predation, but the role of interspecific competition has yet to be resolved. Here, we examine how abundance of an invasive species may affect spatial niche breadth of a native congeneric species. We base our analyses of niche breadth on ordination and factor analysis of biological community and physical parameters, respectively, constituting a summative, multidimensional approach to niche breadth along environmental gradients. Results derived from biological and environmental niche criteria were consistent, although interspecific effects were stronger using the biological niche approach. We show that the niche breadth of the native species is constrained as abundance of the invader increases, but the converse effect does not occur. We conclude that the interaction between invasive G. pulex and native G. d. celticus under natural conditions is consistent with strong interspecific competition whereby a native, weaker competitor is replaced by a superior invasive competitor. This study indicates a strong role of interspecific competition, alongside other known interactions such as differential intraguild predation, in rapid and expansive species replacements following biological invasions.

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“…However, there is some evidence that body size of detritovores, particularly millipedes, can be related to feeding traits (Semenyuk & Tiunov, 2019). In predators, more homogeneous diets and smaller niches have been documented for species of larger body size (Zhao et al, 2014;Bašić & Britton, 2015;Pettitt-Wade et al, 2018). In contrast, Sanders et al (2015) observed increases in niche size with increasing body size in several spider species, assuming that individuals can potentially consume a wider range of prey as the predator grows.…”

Section: Introductionmentioning

confidence: 99%

Trophic niche size and overlap in temperate forest land snails are affected by their lifestyle and body size

2022

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Land snails represent a large diversity of species in the forest floor. Some species prefer to stay in the leaf litter, while others like to climb up vegetation. They are considered generalist herbivores/decomposers. Although the exact trophic position of most species is often difficult to determine, a low rate of trophic niche partitioning within an assemblage is assumed. We compared isotopic niche sizes and overlaps between and within four local land snail assemblages using stable isotope Bayesian ellipses. We found significant differences in trophic niche size (expressed by corrected standard ellipse area) as a function of body size and lifestyle. We hypothesised that the larger niche size of smaller and/or arboreal snail species is due to their limited mobility and the presence of spatially structured food resources. In contrast, a broad and similar mixture of leaf litter sources results in a homogeneous diet for individuals of larger, highly mobile, epigean species, i.e., smaller niche size. We documented multiple overlaps of isotopic niches between species within an assemblage, although arboreal species exhibited slightly different niche positions, indicating specific diets. When comparing all pairwise combinations, we found that isotopic niches of species using different lifestyle did not overlap, in contrast to species using similar lifestyle. In addition, the trophic niches of opportunists with respect to lifestyle were intermediate between those of species from the outermost categories. Our results fit the general concept of variable and overlapping trophic niches in co-occurring snail species. However, we were able to demonstrate differences in species that rarely occupy the same microhabitat.

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Inconsistency for the niche breadth invasion success hypothesis in aquatic invertebrates

Cited by 4 publications

References 81 publications

Intraspecific differences in the invasion success of the Argentine ant Linepithema humile Mayr are associated with diet breadth

Intraspecific differences in the invasion success of the Argentine ant Linepithema humile Mayr are associated with diet breadth

Invader abundance and contraction of niche breadth during replacement of a native gammarid amphipod

Trophic niche size and overlap in temperate forest land snails are affected by their lifestyle and body size

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