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Diversity 2019, 11(1), 5; https://doi.org/10.3390/d11010005

Detection and Control of Invasive Freshwater Crayfish: From Traditional to Innovative Methods

1
Department of Life Sciences, University of Trieste, via L. Giorgieri, 5, 34127 Trieste, Italy
2
Laboratoire Ecologie and Biologie des Interactions-UMR CNRS 7267, Equipe Ecologie Evolution Symbiose, Université de Poitiers, 5, rue Albert Turpin, TSA 51106, CEDEX 9, 86073 Poitiers, France
3
MARE—Marine and Environmental Sciences Centre, Departamento de Paisagem, Ambiente e Ordenamento, Escola de Ciências e Tecnologia, Universidade de Évora, Rua Romão Ramalho, 59, 7000-671 Evora, Portugal
4
Department of Zoology, Trinity College, University of Dublin, Dublin 2, Ireland
Emeritus.
*
Author to whom correspondence should be addressed.
Received: 7 November 2018 / Revised: 18 December 2018 / Accepted: 28 December 2018 / Published: 4 January 2019
(This article belongs to the Special Issue Management and Control of Invasive Crayfish (Crustacea))
Full-Text   |   PDF [295 KB, uploaded 4 January 2019]

Abstract

Invasive alien species are widespread in freshwater systems compared to terrestrial ecosystems. Among crustaceans, crayfish in particular have been widely introduced and are considered a major threat to freshwater ecosystem functioning. New emerging techniques for detecting and controlling invasive crayfish and protecting endangered native species are; thus, now highly desirable and several are under evaluation. Important innovations have been developed in recent years for detection of both invasive and native crayfish, mainly through eDNA, which allows for the detection of the target species even at low abundance levels and when not directly observable. Forecasting models have also moved towards the creation of realistic invasion scenarios, allowing effective management plans to be developed in advance of invasions. The importance of monitoring the spread and impacts of crayfish and pathogens in developing national data and research networks is emphasised; here “citizen science” can also play a role. Emerging techniques are still being considered in the field of invasive crayfish control. Although for decades the main traditional techniques to manage invasive crayfish were solely based on trapping, since 2010 biological, biocidal, autocidal controls and sexual attractants, monosex populations, RNA interference, the sterile male release technique and oral delivery have all also been investigated for crayfish control. In this review, ongoing methodologies applied to the detection and management of invasive crayfish are discussed, highlighting their benefits and limitations. View Full-Text
Keywords: invasive freshwater crayfish; detection; species control; management; traditional methods; innovative methods invasive freshwater crayfish; detection; species control; management; traditional methods; innovative methods
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Manfrin, C.; Souty-Grosset, C.; Anastácio, P.M.; Reynolds, J.; Giulianini, P.G. Detection and Control of Invasive Freshwater Crayfish: From Traditional to Innovative Methods. Diversity 2019, 11, 5.

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