A fish-passable barrier to stop the invasion of non-indigenous crayfish

Frings, Roy M.; Vaeßen, Susanne; Groß, Harald; Roger, Sebastian; Schüttrumpf, Holger; Hollert, Henner

doi:10.1016/j.biocon.2012.12.014

Cited by 43 publications

(45 citation statements)

References 35 publications

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“…As a specific example, eDNA could be used to monitor for crayfish invasions above barriers constructed to protect upstream populations of highly imperilled native crayfishes, providing early warnings if these management interventions have failed or been breached (Frings et al . ). Furthermore, a large proportion of native crayfishes are globally imperilled with extinction (Richman et al .…”

Section: Discussionmentioning

confidence: 97%

EnvironmentalDNA(eDNA) detects the invasive rusty crayfishOrconectes rusticusat low abundances

Dougherty

Larson

Renshaw

et al. 2016

Journal of Applied Ecology

170

177

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Summary Early detection is invaluable for the cost‐effective control and eradication of invasive species, yet many traditional sampling techniques are ineffective at the low population abundances found at the onset of the invasion process. Environmental DNA (eDNA) is a promising and sensitive tool for early detection of some invasive species, but its efficacy has not yet been evaluated for many taxonomic groups and habitat types.We evaluated the ability of eDNA to detect the invasive rusty crayfish Orconectes rusticus and to reflect patterns of its relative abundance, in upper Midwest, USA, inland lakes. We paired conventional baited trapping as a measure of crayfish relative abundance with water samples for eDNA, which were analysed in the laboratory with a qPCR assay. We modelled detection probability for O. rusticus eDNA using relative abundance and site characteristics as covariates and also tested the relationship between eDNA copy number and O. rusticus relative abundance.We detected O. rusticus eDNA in all lakes where this species was collected by trapping, down to low relative abundances, as well as in two lakes where trap catch was zero. Detection probability of O. rusticus eDNA was well predicted by relative abundance of this species and lake water clarity. However, there was poor correspondence between eDNA copy number and O. rusticus relative abundance estimated by trap catches. Synthesis and applications. Our study demonstrates a field and laboratory protocol for eDNA monitoring of crayfish invasions, with results of statistical models that provide guidance of sampling effort and detection probabilities for researchers in other regions and systems. We propose eDNA be included as a tool in surveillance for invasive or imperilled crayfishes and other benthic arthropods.

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Section: Discussionmentioning

confidence: 97%

EnvironmentalDNA(eDNA) detects the invasive rusty crayfishOrconectes rusticusat low abundances

Dougherty

Larson

Renshaw

et al. 2016

Journal of Applied Ecology

170

177

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“…Based on the theory of propagule pressure, an assessment of how many individuals will spread across a barrier can improve predictions of how likely population establishment in new environments above barriers will be (Drolet & Locke, ; Lockwood, Cassey, & Blackburn, ). This information is crucial for decision makers both in and outside academia, who increasingly need to balance the need for making barriers passable to native species and the opportunity of blocking invasive species’ dispersal (Frings et al., ; Hirsch et al., ).…”

Section: Discussionmentioning

confidence: 99%

An approach to incorporate individual personality in modeling fish dispersal across in‐stream barriers

Hirsch

Thorlacius

Brodin

et al. 2016

Ecology and Evolution

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Animal personalities are an important factor that affects the dispersal of animals. In the context of aquatic species, dispersal modeling needs to consider that most freshwater ecosystems are highly fragmented by barriers reducing longitudinal connectivity. Previous research has incorporated such barriers into dispersal models under the neutral assumption that all migrating animals attempt to ascend at all times. Modeling dispersal of animals that do not perform trophic or reproductive migrations will be more realistic if it includes assumptions of which individuals attempt to overcome a barrier. We aimed to introduce personality into predictive modeling of whether a nonmigratory invasive freshwater fish (the round goby, Neogobius melanostomus) will disperse across an in‐stream barrier. To that end, we experimentally assayed the personalities of 259 individuals from invasion fronts and established round goby populations. Based on the population differences in boldness, asociability, and activity, we defined a priori thresholds with bolder, more asocial, and more active individuals having a higher likelihood of ascent. We then combined the personality thresholds with swimming speed data from the literature and in situ measurements of flow velocities in the barrier. The resulting binary logistic regression model revealed probabilities of crossing a barrier which depended not only on water flow and fish swimming speed but also on animal personalities. We conclude that risk assessment through predictive dispersal modeling across fragmented landscapes can be advanced by including personality traits as parameters. The inclusion of behavior into modeling the spread of invasive species can help to improve the accuracy of risk assessments.

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“…Although this study has demonstrated that dark culverts do not inhibit adult white-clawed crayfish spatial behaviour in any obvious way, this is under the assumption that changes in light conditions are the only habitat alteration caused by the culvert. Likely alterations in substrate habitat adjacent and in the culvert, presence of vertical barriers within the culvert (Bubb et al, 2008;Frings et al, 2013), as well as potential degradation of water quality (Mazza et al, 2011;Peay and Füreder, 2011), certainly have the capacity to influence entrance to and movement through a culvert by crayfish. So too does predation vulnerability; in the current study it appears that a lack of bed complexity in box concrete box culverts exposed crayfish to rat predation.…”

Section: Figurementioning

confidence: 99%

“…Therefore, structures that may act as barriers to movement through alteration of habitat or by creating physically impassable barriers are expected to contribute to the fragmentation of populations. The majority of studies that relate crayfish distribution and movement to river impoundments such as culverts have focused primarily on the potential of culverts and weirs to limit the geographical spread of introduced species of crayfish (Light, 2003;Kerby et al, 2005;Dana et al, 2011;Foster and Keller, 2011;Frings et al, 2013;Maceda-Veiga et al, 2013), thus further highlighting the potential ability of these structures to negatively impact native species of crayfish. Culverts can restrict movement and limit dispersal of crayfish, as well as other aquatic animals by causing the elevation of water velocity, increasing channel homogeneity and alteration of river bed structure, or creating direct barriers through the positioning of elevated culvert outlets and mini weirs (Bubb et al, 2008;Souty-Grosset and Reynolds, 2009;Franklin and Bartels, 2012).…”

Section: Introductionmentioning

confidence: 99%

Do culverts impact the movements of the endangered white-clawed crayfish?

Louca

Ream

Findlay

et al. 2014

Knowl. Managt. Aquatic Ecosyst.

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Key-words: crayfish, dispersal, tracking, Austropotamobius pallipes, impoundmentCulverts can impact the migration and dispersal of aquatic animals and result in population fragmentation, increasing the risk of local extinction for endangered species such as the white-clawed crayfish Austropotamobius pallipes. This study used radio telemetry and passive integrated transponder (PIT) telemetry to determine whether existing and experimental covered culverts affect the upstream and downstream movements of adult white-clawed crayfish. Daily crayfish movement rates did not differ significantly between an unlit 363-m long culvert and open stream channel sections. Crayfish moved into dark, covered sections volitionally. However, limited upstream movement occurred at sudden transitions of bed height or smooth-concrete box culvert sections with fast flow, suggesting partial barrier effects. In the 20-m long experimental in-stream culvert, also dark, but with natural stream bed, 70% of radio-tagged crayfish released downstream entered the culvert, as did 60% of those released upstream. Overall 35% passed through, with similar numbers in each direction. We conclude that dark culverts up to several hundred metres do not inhibit dispersal of white-clawed crayfish, provided stream slope, bed type and water velocity are amenable for movement and refuge. Care is required to ensure that culverts are bioengineered to ensure that average water velocity is sufficiently low and local hydraulic variation high, the bed and/or sidewalls contain refuge structures, and there are no cross-channel steps in bed level. Smooth-bedded box culverts are unlikely to be suitable for white-clawed crayfish. RÉSUMÉLes ponceaux influent-ils sur les mouvements de l'écrevisse à pattes blanches en voie de disparition ? Mots-clés :écrevisse, dispersion, suivi télémétrique, Les petits ponts d'une seule travée peuvent influer sur la migration et la dispersion des animaux aquatiques et entraîner la fragmentation de la population, augmentant le risque d'extinction locale des espèces menacées telles que l'écrevisse à pattes blanches, Austropotamobius pallipes. Cette étude a utilisé la télémétrie radio et la télémétrie par transpondeur passif intégré (PIT) afin de déterminer si les ponceaux couverts existants et expérimentaux affectent les mouvements en

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A fish-passable barrier to stop the invasion of non-indigenous crayfish

Cited by 43 publications

References 35 publications

EnvironmentalDNA(eDNA) detects the invasive rusty crayfishOrconectes rusticusat low abundances

EnvironmentalDNA(eDNA) detects the invasive rusty crayfishOrconectes rusticusat low abundances

An approach to incorporate individual personality in modeling fish dispersal across in‐stream barriers

Do culverts impact the movements of the endangered white-clawed crayfish?

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