Shelter Occupancy by Mixed-Species Pairs of Native Signal Crayfish and Non-Native Red Swamp Crayfish Held in Enclosures

Mueller, Karl W.; Bodensteiner, Leo R.

doi:10.1080/02705060.2009.9664266

Cited by 3 publications

(3 citation statements)

References 46 publications

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“…and P. leniusculus (Mueller and Bodensteiner, 2009). Coexistence at a small scale was in fact observed in this study, with non-tagged crayfish of both species often being visually detected in the same area.…”

Section: Discussionmentioning

confidence: 94%

Indicators of movement and space use for two co-occurring invasive crayfish species

Anastácio

Banha

Capinha³

et al. 2015

Ecological Indicators

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a b s t r a c tRed swamp crayfish (Procambarus clarkii) and signal crayfish (Pacifastacus leniusculus) are two invasive freshwater species with a worldwide distribution. The objective of this work was to investigate how the two species move and use space in an area of recent coexistence. Simultaneously, we test the use of new tools and indices to describe their movement patterns. To accomplish this we performed a radiotracking program within a river-type habitat during two different periods (September/October 2010 and June/July 2013). We used spatial analysis tools to map crayfish radio-location data with and without accounting for the curvature of the river. To assess the consistency of the direction of movement and of the distances traveled by crayfish, two indices were developed. To assess the habitat preferences of each species we applied Ivlev's Electivity Index and the Standardized Forage Ratio. Movement of P. clarkii and P. leniusculus differed. The average detected movement was 8.8 m day −1 for P. clarkii and 17.5 m day −1 for P. leniusculus. However, crayfish behavior ranged from almost complete immobility -sometimes during several days -to large movements, in half a day, up to a maximum of 255 m for P. clarkii and 461 m for P. leniusculus. The proportion of upstream or downstream movements was independent of the species and both species displayed no preference for either direction. The indices of consistency of movement showed a large interindividual variation. Species and period (2010 or 2013) affected the mean daily distance traveled, maximum observed distance from location of release and percentage of observations under vegetation cover. The Ivlev's Electivity Index and the Standardized Forage Ratio presented similar results. P. clarkii showed a preference for pool areas with riparian vegetation cover while P. leniusculus preferred riffle and pool areas with riparian vegetation cover. Our work provided new and valuable data for modeling the active dispersal of these two problematic invaders in a context of coexistence.

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Section: Discussionmentioning

confidence: 94%

Indicators of movement and space use for two co-occurring invasive crayfish species

Anastácio

Banha

Capinha³

et al. 2015

Ecological Indicators

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“…A few studies have begun to investigate the ecology and potential impacts of P. clarkii in the Pacific Northwest. Mueller and Bodensteiner (2009) did not find competitive dominance of P. clarkii over native P. leniusculus under field conditions in a Washington lake. Olden et al (2009b) observed that P. clarkii was less predatory on an invasive snail common to Washington than P. leniusculus.…”

Section: Red Swamp Crawfish (Procambarus Clarkii)mentioning

confidence: 61%

“…Researchers in the southeastern United States (US) are increasing efforts to document and conserve the region's endemic crayfish diversity (e.g., Welsh et al 2010), while researchers in the Great Lakes region and California have made important contributions quantifying the economic and ecological costs associated with crayfish invasions (e.g., Gamradt and Kats 1996;Keller et al 2008). By contrast, few recent studies on distributions, ecology, or management of crayfish have been conducted in the Pacific Northwest region of the US and Canada (but see Lewis 1997;Bondar et al 2005a;Mueller and Bodensteiner 2009). This oversight is somewhat surprising given the unfortunate history of crayfish invasions and conservation in adjacent California, where the native sooty crayfish (Pacifastacus nigrescens) was declared extinct in 1977, and the native Shasta crayfish (Pacifastacus fortis) is listed under the US Endangered Species Act.…”

Section: Introductionmentioning

confidence: 96%

The State of Crayfish in the Pacific Northwest

Larson

Olden

2011

Fisheries

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We summarize the state of knowledge on crayfish in the Pacific Northwest region of the United States and Canada, emphasizing distributions and conservation status of native species, as well as known introductions and distributions of alien crayfishes, and reviewing fishing regulations relevant to crayfish across five states and provinces. We found the present distribution and ecology of native crayfishes in this region to be poorly known, inhibiting accurate conservation assessments and management. The number of alien crayfishes established in the region, ranging in distribution from localized to widespread and including several major invasive species, now exceeds the diversity of native crayfishes. The treatment of crayfish by fishing regulations and laws varies among states and provinces, potentially impairing successful management and conservation of these species in shared ecosystems such as the Snake and Columbia rivers. We conclude with recommendations for crayfish management and regulation, and a call for more research on the ecology of crayfish in the Pacific Northwest. FeATuRe: The State of Crayfish in the Pacific Northwest el estado Del Langostino en el Pacífico NoroesteSe presenta un resumen del estado de conocimiento acerca del langostino en la región del Pacífico noroeste de los Estados Unidos de Norteamérica y Canadá, haciendo énfasis en la distribución y estado de conservación de las especies nativas así como también en introducciones conocidas y distribución de especies foráneas de langostinos; también se hace una revisión de las regulaciones pesqueras relevantes para los langostinos a lo largo de cinco estados y provincias. Se encontró que la distribución actual y ecología de los langostinos nativos de esta región son poco conocidas, lo que impide realizar evaluaciones precisas de conservación y manejo. El número de langostinos foráneos establecidos en la región, cuya distribución va desde los altamente localizados a los ampliamente distribuidos incluyendo varias de las especies invasivas más importantes, excede la diversidad de langostinos nativos. El manejo de los langostinos a través de leyes y medidas regulatorias de pesca varía entre estados y provincias, lo que potencialmente puede reducir el éxito de la conservación y manejo de estas especies en ecosistemas compartidos como los ríos Snake y Columbia. Se concluye con recomendaciones para el manejo y regulación del langostino y se hace un llamado para incrementar los esfuerzos de investigación en la ecología del langostino del Pacífico noroeste.

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Crayfish occupancy and abundance in lakes of the Pacific Northwest, USA

Larson

Olden

2013

Freshwater Science

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Shelter Occupancy by Mixed-Species Pairs of Native Signal Crayfish and Non-Native Red Swamp Crayfish Held in Enclosures

Cited by 3 publications

References 46 publications

Indicators of movement and space use for two co-occurring invasive crayfish species

Indicators of movement and space use for two co-occurring invasive crayfish species

The State of Crayfish in the Pacific Northwest

Crayfish occupancy and abundance in lakes of the Pacific Northwest, USA

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