A native species does not prevent the colonization success of an introduced submerged macrophyte, even at low propagule pressure

Louback-Franco, Nayara; Dainez-Filho, Mário Sérgio; Souza, Douglas Costa; Thomaz, Sidinei Magela

doi:10.1007/s10750-019-04116-w

Cited by 10 publications

(3 citation statements)

References 59 publications

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“…Invasive species often experience fitness advantages by having fewer predators and inhabiting generalist niches, which can offset inbreeding depression while also facilitating adaptation and plasticity to novel, variable environments (Colautti et al, 2017). Determining consistent predictors of colonization success in association with environmental and genetic factors is particularly challenging, albeit imperative for mitigating species invasions and for improving reintroduction strategies of endangered species (Lee, 2002; Louback‐Franco et al, 2020; Sakai et al, 2001; Sauers & Sadd, 2019).…”

Section: Introductionmentioning

confidence: 99%

Neutral and adaptive drivers of genomic change in introduced brook trout (Salvelinus fontinalis) populations revealed by pooled sequencing

Brookes

Jeon

Derry

et al. 2022

Ecology and Evolution

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Understanding the drivers of successful species invasions is important for conserving native biodiversity and for mitigating the economic impacts of introduced species. However, whole‐genome resolution investigations of the underlying contributions of neutral and adaptive genetic variation in successful introductions are rare. Increased propagule pressure should result in greater neutral genetic variation, while environmental differences should elicit selective pressures on introduced populations, leading to adaptive differentiation. We investigated neutral and adaptive variation among nine introduced brook trout (Salvelinus fontinalis) populations using whole‐genome pooled sequencing. The populations inhabit isolated alpine lakes in western Canada and descend from a common source, with an average of ~19 (range of 7–41) generations since introduction. We found some evidence of bottlenecks without recovery, no strong evidence of purifying selection, and little support that varying propagule pressure or differences in local environments shaped observed neutral genetic variation differences. Putative adaptive loci analysis revealed nonconvergent patterns of adaptive differentiation among lakes with minimal putatively adaptive loci (0.001%–0.15%) that did not correspond with tested environmental variables. Our results suggest that (i) introduction success is not always strongly influenced by genetic load; (ii) observed differentiation among introduced populations can be idiosyncratic, population‐specific, or stochastic; and (iii) conservatively, in some introduced species, colonization barriers may be overcome by support through one aspect of propagule pressure or benign environmental conditions.

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Section: Introductionmentioning

confidence: 99%

Neutral and adaptive drivers of genomic change in introduced brook trout (Salvelinus fontinalis) populations revealed by pooled sequencing

Brookes

Jeon

Derry

et al. 2022

Ecology and Evolution

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“…Studies about H. verticillata showed that its fragments regenerate very fast (Umetsu et al 2012) and resist droughts (Silveira et al 2009), which help explain its fast spread in the Upper Paraná River basin. Indeed, the colonization success of this species was explained mainly by the number of propagules released instead of the biotic resistance provided by a native isoetid-like macrophyte (Louback-Franco et al 2018). These findings indicate the important role of propagule pressure in the success of invasive macrophytes.…”

Section: Invasion Biologymentioning

confidence: 82%

Ecology of Aquatic Macrophytes in Brazil: The Legacy of Francisco De Assis Esteves

Thomaz¹,

Carvalho²,

Mormul³

et al. 2022

Oecol. Austr.

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In this review, we evaluate the contribution of Brazilian limnologists to research outputs on aquatic macrophyte ecology. We found a strong “adviser effect” of Professor F.A. Esteves on the Brazilian scientific production focused on aquatic macrophytes. In general, articles focused on a variety of themes, including, inter alia, the role of aquatic macrophytes on the biodiversity of other groups, the interaction between macrophytes and the environment, the effects of environmental factors on aquatic macrophytes distribution and biodiversity, the effects of invasive species on aquatic biodiversity, aquatic macrophytes control and decomposition. Emerging topics (e.g., metacommunity ecology, biodiversity-ecosystem functioning, and patterns of diversity and their determinants) are being embraced by Brazilian limnologists that use aquatic macrophytes as organism models. Despite the fact there is much to study, we think that directly (e.g., via mentoring) or indirectly (via publications), our current knowledge about macrophytes ecology was inspired by Chico Esteves.

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“…The use of canopy type as a character of invasion intensity is sparse in the literature with some recent evidence that the presence of native macrophyte species (including canopy species), does not tend to limit the colonisation success of invasive macrophytes (Louback-Franco et al, 2019). This study examines floating and submerged canopy relationships with invasion intensity and overall/native species richness.…”

Section: Canopy Typesmentioning

confidence: 99%

Assessing watermilfoil invasion effects on native macrophyte communities in North American lakes using a novel approach for macrophyte sampling

Smith

Küpper

Trinder

et al. 2021

Knowl. Manag. Aquat. Ecosyst.

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Aquatic invasive species are among the greatest threats to freshwater biodiversity. The aim of this study was to understand the effects of two invasive watermilfoil species (Myriophyllum heterophyllum Michx. and Myriophyllum spicatum L.) on native macrophyte communities and to assess community response to a range of invasion intensities as well as examine the influence of canopy types. We hypothesized that some communities would be more sensitive to invasion, and that some canopy species would facilitate watermilfoil presence. We used a novel approach to give better representation of the 3D aspect of the community which involved employing a modified quadrat approach to sample at two Connecticut lakes. Results show that watermilfoil invasion has a significant negative effect on native species richness. Floating canopy does not vary with invasion intensity, but submerged canopy does. One species, (Utricularia purpurea Walter), was associated with high native species richness and rarely occurred with invasive species. The results identify potential species that are disproportionally threatened by invasive species, as well as identifying invasion indicator species. The examination of canopy effects is uncommon in aquatic invasion ecology, and this study suggests that this aspect may have significant effects on resilience to invasion and overall community dynamics.

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A native species does not prevent the colonization success of an introduced submerged macrophyte, even at low propagule pressure

Cited by 10 publications

References 59 publications

Neutral and adaptive drivers of genomic change in introduced brook trout (Salvelinus fontinalis) populations revealed by pooled sequencing

Neutral and adaptive drivers of genomic change in introduced brook trout (Salvelinus fontinalis) populations revealed by pooled sequencing

Ecology of Aquatic Macrophytes in Brazil: The Legacy of Francisco De Assis Esteves

Assessing watermilfoil invasion effects on native macrophyte communities in North American lakes using a novel approach for macrophyte sampling

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