A review of possible methods for controlling nuisance populations of alien crayfish

Holdich, D. M.; Gydemo, Rolf; Rogers, Will

doi:10.1201/9781315140469-16

Cited by 30 publications

(21 citation statements)

References 1 publication

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“…However, continual harvest is necessary because female crayfish are capable of laying 800 eggs within one spawning event, resulting in population recovery if overharvest does not result in complete removal (Holdich et al. ). Such active management has been applied for controlling invasive crayfish in Ash Meadows National Wildlife Refuge (Scoppettone et al.…”

Section: Discussionmentioning

confidence: 99%

Density‐Dependent Effects of Invasive Red Swamp Crayfish Procambarus clarkii on Experimental Populations of the Amargosa Pupfish

Paulson

Stockwell

2019

Trans Am Fish Soc

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The adverse effects of invasive species are expected to be proportional to their relative densities. However, interference competition among conspecifics when invasive species are at high densities could limit such effects. These alternative hypotheses inspired us to test the density-specific effects of red swamp crayfish Procambarus clarkii on experimental populations of the Amargosa Pupfish Cyprinodon nevadensis amargosae. The presence of crayfish had a significant influence on the survival of adult pupfish. In allopatry, adult pupfish survival was nearly 100%. However, the presence of crayfish resulted in significantly lower survival rates for adult pupfish, 84% and 69% survival for the low-and high-density crayfish treatments, respectively. Crayfish also significantly affected the production of juvenile pupfish, with high juvenile production in the allopatric (705 juveniles/mesocosm) and low-density crayfish treatments (705 juveniles/mesocosm). Juvenile production in both of these groups was significantly higher than that in the groups sympatric with high-density crayfish (271 juveniles/mesocosm). The same pattern was observed when we evaluated the number of juvenile pupfish that were produced per adult female. We tested the hypothesis that interference competition among the crayfish would decrease predator efficacy by comparing the high-density crayfish treatment with a fourth high-density crayfish treatment wherein the crayfish were tethered. There was no significant difference in the rate of adult survivorship of the Amargosa Pupfish in the tethered and untethered high-density treatment groups (70% and 69%, respectively). However, tethering resulted in a significant increase in juvenile production in the high-density crayfish treatments (493 and 271 juveniles per mesocosm were produced in the tethered and untethered groups, respectively). The same patterns were observed when we examined the number of juvenile pupfish that was produced per adult female. These findings are inconsistent with the interference competition hypothesis, while supporting the hypothesis of density-dependent effects of crayfish on Amargosa Pupfish populations. These findings suggest that reducing crayfish density will be a beneficial management tool for reducing the effects of crayfish on benthic fish populations.

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Section: Discussionmentioning

confidence: 99%

Density‐Dependent Effects of Invasive Red Swamp Crayfish Procambarus clarkii on Experimental Populations of the Amargosa Pupfish

Paulson

Stockwell

2019

Trans Am Fish Soc

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“…Even though various control methods have been attempted to control nuisance crayfish, crayfish eradication is almost impossible except in limited circumstances (Gherardi, Aquiloni, Diéguez-Uribeondo, & Tricarico, 2011;Hansen, Ives, Vander Zanden, & Carpenter, 2013;Holdich, Gydemo, & Rogers, 1999;Manfrin, Souty-Grosset, Anastácio, Reynolds, & Giulianini, 2019). However, Hansen et al (2013) pointed out that more frequently droughts in the future may facilitate eradication of invasive rusty crayfish (Orconectes rusticus) in Wisconsin lakes.…”

Section: Management Implicationsmentioning

confidence: 99%

Impacts of climate change on the global potential distribution of two notorious invasive crayfishes

et al. 2019

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1. Invasive alien species and climate change are two of the most serious global environmental threats. In particular, it is of great interest to understand how changing climates could impact the distribution of invaders that pose serious threats to ecosystems and human activities.2. In this study, we developed ensemble species distribution models for predicting the current and future global distribution of the signal crayfish Pacifastacus leniusculus and the red swamp crayfish Procambarus clarkii, two of the most highly problematic invaders of freshwater ecosystems worldwide. We collected occurrence records of the species, from native and alien established ranges worldwide.These records in combination with averaged observations of current climatic conditions were used to calibrate a set of 10 distinct correlative models for estimating the climatic niche of each species. We next projected the estimated niches into the geographical space for the current climate conditions and for the 2050s and 2070s under representative concentration pathway 2.6 and 8.5 scenarios.3. Our species distribution models had high predictive abilities and suggest that annual mean temperature is the main driver of the distribution of both species.Model predictions indicated that the two crayfish species have not fully occupied their suitable climates and will respond differently to future climate scenarios in different geographic regions. Suitable climate for P. leniusculus was predicted to shift poleward and to increase in extent in North America and Europe but decrease in Asia. Regions with suitable climate for P. clarkii are predicted to widen in Europe but contract in North America and Asia.4. This study highlights that invasive species with different thermal preference are likely to respond differently to future climate changes. Our results provide important information for policy makers to design and implement anticipated measures for the prevention and control of these two problematic species. K E Y W O R D Sclimate change, habitat suitability, Pacifastacus leniusculus, Procambarus clarkii, species distribution modelling

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“…Unfortunately, signal crayfish are resistant to many biocides and pesticides (NNSS, 2011). Two stakeholders (both regional environmental management officials) who favoured biocide as a control method generally agreed that biocide applications are only appropriate in certain places, generally as a spot treatment, because the toxins used are not crayfish-specific, and in large water bodies like rivers the collateral damage is high (Holdich et al, 1999b;Peay, 2001). However, other stakeholders, particularly anglers, were not happy about the use of biocides with one angler commenting that using biocides was deliberately "creating an ecological incidentˮ (interview with angler).…”

Section: Methodsmentioning

confidence: 99%

“…Several stakeholders mentioned that work was proceeding on finding a control method based on pheromone trapping, although no one mentioned any successes (Holdich et al, 1999b;Stebbing et al, 2002). This is an area recommended in the NNSS risk assessment for signal crayfish as an area in need of work.…”

Section: Choosing Methods Of Controlmentioning

confidence: 99%

Trapping Aliens: Understanding the Complexities of Controlling Introduced Freshwater Crayfish in the United Kingdom

Adams¹

2016

Transylvanian Review of Systematical and Ecological Research

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Invasive non-native species pose practical and ethical problems for the people tasked with their management. Invasive freshwater crayfish species in the UK threaten rare native crayfish and freshwater habitats, yet their control is beset with social, practical and environmental barriers to success. This paper draws on an interdisciplinary study of stakeholders involved in crayfish management in East Anglia to explore the management of non-native freshwater crayfish in the UK. It concludes that when standard methods of control fail, stakeholders are willing to consider unusual management suggestions such as commercial trapping, whilst recognising that these may bring their own problems.

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A review of possible methods for controlling nuisance populations of alien crayfish

Cited by 30 publications

References 1 publication

Density‐Dependent Effects of Invasive Red Swamp Crayfish Procambarus clarkii on Experimental Populations of the Amargosa Pupfish

Density‐Dependent Effects of Invasive Red Swamp Crayfish Procambarus clarkii on Experimental Populations of the Amargosa Pupfish

Impacts of climate change on the global potential distribution of two notorious invasive crayfishes

Trapping Aliens: Understanding the Complexities of Controlling Introduced Freshwater Crayfish in the United Kingdom

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