Towards a cohesive strategy for the conservation of the United States’ diverse and highly endemic crayfish fauna

Taylor, Christopher A.; DiStefano, Robert J.; Larson, Eric R.; Stoeckel, James A.

doi:10.1007/s10750-019-04066-3

Cited by 43 publications

(28 citation statements)

References 158 publications

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“…This situation could be used for "ex-situ" conservation projects involving the formation of new populations instead of extinct ones. This work seems to be quite urgent since several crayfish species are declining because of competition with alien species and for other reasons (Taylor et al, 2019).…”

Section: Expansion Of Crayfish Range To Center Eurasiamentioning

confidence: 99%

The expansion of freshwater crayfish range to the center of Eurasia

Popov

2020

Nauplius

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Freshwater crayfish were previously absent in the territory stretching from the Caspian Sea basin to the Amur basin. That gap is now being filled, mainly due to the eastward invasion of the narrow-clawed crayfish Astacus leptodactylus, which has currently approached Lake Baikal. This invasion is the result of unauthorized releases. Further spread of the narrow-clawed crayfish or other crayfish species in Siberia may be expected.

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Section: Expansion Of Crayfish Range To Center Eurasiamentioning

confidence: 99%

The expansion of freshwater crayfish range to the center of Eurasia

Popov

2020

Nauplius

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“…Crayfish (Decapoda: Astacidea) are a diverse taxonomic group of freshwater crustaceans (Crandall & De Grave 2017;Taylor et al 2019), containing both critically endangered endemic species (Taylor et al 2007;Crandall & Buhay 2008;Bl aha et al 2016) and highly successful invasive species (Lodge et al 2000;Gherardi 2006;Lodge et al 2012). The magnitude of their potential loss or invasive impacts is often related to their key roles in the freshwater ecosystems.…”

Section: Introductionmentioning

confidence: 99%

The redclaw crayfish: A prominent aquaculture species with invasive potential in tropical and subtropical biodiversity hotspots

Haubrock

Oficialdegui²,

Zeng

et al. 2021

Reviews in Aquaculture

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The redclaw crayfish (Cherax quadricarinatus; hereafter redclaw), native to northern Australia and southern New Guinea, is among the largest freshwater decapods. It matures early and is considered highly prolific as females may lay over one thousand eggs in a single clutch. Despite generally preferring slow-moving streams in its native range, it has a wide environmental tolerance, making it capable of establishing populations when introduced to a wide range of other conditions and habitats. These biological and ecological features render it a highly suitable and popular species for aquaculture worldwide, being the second most important crayfish species economically (after the red swamp crayfish Procambarus clarkii). Adding to that, its unique coloration fuels demand and value among aquarium enthusiasts, making it attractive for the aquarium pet trade. Today, redclaw is widely translocated (67 countries/territories) and various established wild populations (22 countries) have been reported on every continent except Antarctica. Information on its potential or observed impacts, however, is sparse and often anecdotal. To address this gap, this comprehensive review compiles all available information on this species, covering its taxonomy and description, biology and ecology, native and non-native ranges accompanied with documented introduction pathways. Built upon these, we conducted biological and socio-economic classification and species distribution modelling. We reveal a lack of thorough impact assessments for this species despite sufficient indications of major observable impacts at local scales. We call attention to the importance of managing the use of this prominent introduced species in aquaculture and aquarium pet trade.

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“…Despite their importance in aquatic systems, at least one‐third of all species are at risk (Taylor et al, 2007; Richman et al, 2015). In the USA, 22.5% of crayfish species are considered threatened or of higher conservation concern (Taylor et al, 2019). Their limited natural ranges compound the effects of habitat alteration and invasive species – both of which are primary factors contributing to their imperillment (Taylor et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…A disadvantage of using demographic models is that the data required to build them are often sparse or lacking (Akçakaya, 2000). In the case of imperilled crayfish species, sparse life history data contribute to the challenges of conservation and management (Lodge et al, 2000; Taylor et al, 2007; Taylor et al, 2019). Moreover, minimal life history information has constrained biologists to use incomplete or non‐representative data in their models (Larson & Olden, 2010).…”

Section: Introductionmentioning

confidence: 99%

Modelling effects of disturbance on population dynamics of generalized crayfish life history strategies

Bayer

Fournier

Magoulick

2021

Aquatic Conservation

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Crayfish play a crucial ecological role and are often considered a keystone species within freshwater ecosystems; however, North American crayfish species face disturbance and ecological threats including invasive species and intensified drought. Demographic models can allow examination of population dynamics of a targeted species under a wide variety of disturbance scenarios. In this study, crayfish population dynamics were modelled and their responses to simulated biological invasions and drought were assessed. As life history data on crayfish are relatively rare, models were used to explore the population viability of four generalized species with distinct life history strategies under 11 disturbance scenarios. RAMAS‐Metapop was used to construct stage‐based demographic metapopulation models parameterized using vital rates from established literature sources. Models indicated that populations respond differentially to disturbance based on life history. However, both r‐ and K‐selected species appear to be highly susceptible to decline when faced with the additive effects of reduced carrying capacity resulting from invasion and reduced survival rates caused by drought. Constructing models that explore a broad array of life histories and disturbance regimes can provide managers with tools to develop generalized, widely applicable conservation strategies in data‐depauperate systems.

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Towards a cohesive strategy for the conservation of the United States’ diverse and highly endemic crayfish fauna

Cited by 43 publications

References 158 publications

The expansion of freshwater crayfish range to the center of Eurasia

The expansion of freshwater crayfish range to the center of Eurasia

The redclaw crayfish: A prominent aquaculture species with invasive potential in tropical and subtropical biodiversity hotspots

Modelling effects of disturbance on population dynamics of generalized crayfish life history strategies

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