Effect of Stream Permanence on Predation Risk of Lotic Crayfish by Riparian Predators

Yarra, Allyson N.; Magoulick, Daniel D.

doi:10.1656/058.019.0407

Cited by 4 publications

(4 citation statements)

References 42 publications

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“…We randomly selected 15 Groundwater Flashy and 13 Runoff Flashy streams from a pool of candidate stream segments to sample for F. neglectus. Based on Yarra and Magoulick (2020), we defined candidate segments as having: (1) ≥ 0.50 predicted probability of being classified as the correct flow regime, (2) ≤ 0.35 model prediction uncertainty, (3) drainage area between 35 and 200 km 2 and (4) are at least 10 km from other candidates. Although randomly selected, we were limited to sampling particular portions of stream segments based on accessibility (e.g., public land, road crossing and landowner permission).…”

Section: Sampling Site Selectionmentioning

confidence: 99%

“…F . neglectus neglectus is regularly found in the Neosho and the western portion of the Upper White River drainages (Pflieger, 1996; Yarra & Magoulick, 2020). Most likely these subspecies were introduced outside of their native ranges via bait bucket introduction (Lodge et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…Of the two subspecies, F. n. chaenodactylus has a narrower native range that includes the North Fork White River, Bryant Creek and Middle White River drainages in Arkansas and Missouri (Pflieger, 1996;Wagner, Taylor, & Kottmyer, 2010). F. neglectus neglectus is regularly found in the Neosho and the western portion of the Upper White River drainages (Pflieger, 1996;Yarra & Magoulick, 2020). Most likely these subspecies were introduced outside of their native ranges via bait bucket introduction (Lodge et al, 2000).…”

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confidence: 99%

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Morphological traits related to potential invasiveness of two subspecies of the crayfish Faxonius neglectus

Magoulick

Wynne

Clark

2022

River Research & Apps

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Biological invasions have major environmental and economic impacts, and pose a serious threat to global biodiversity. Invasive crayfish species are one of the greatest threats to native crayfish biodiversity. Additionally, almost 50% of US and Canadian species are considered at risk, making crayfish one of the most imperiled taxonomic groups in the world. Small‐scale (extralimital) invasions are often overlooked and may be more common than large‐scale (extraregional) invasions. One example of an extraregional and extralimital invader is the Ringed Crayfish (Faxonius neglectus), which has been independently introduced multiple times to drainages throughout the United States, including those adjacent to its native range. Traits related to invasiveness, such as chelae size, are suggested to differ between invasive crayfish from extralimital and extraregional source populations with larger size related to increased invasiveness. We examined morphological traits related to invasion potential for both subspecies of F. neglectus, F. neglectus neglectus and F. neglectus chaenodactylus. We sampled 28 stream sites within the known native range of F. neglectus, including the Neosho and Upper White River drainages in Oklahoma, Arkansas and Missouri. Total carapace length, chelae length and chelae width of 30 adult male F. neglectus were measured from each site. We found significant differences in crayfish morphological characteristics among stream sites. We found significantly greater chelae length:carapace length (ChL:CarL) and chelae width:chelae length (ChW:ChL) in F. neglectus chaenodactylus than F. neglectus neglectus. Even among F. neglectus neglectus populations, there were significant differences in ChL:CarL and ChW:ChL. Morphological characteristics suggest that F. neglectus chaenodactylus and some populations of F. neglectus neglectus may be pre‐adapted to the role of invader.

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Section: Sampling Site Selectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Morphological traits related to potential invasiveness of two subspecies of the crayfish Faxonius neglectus

Magoulick

Wynne

Clark

2022

River Research & Apps

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“…Since crayfish often feed at multiple trophic levels, they provide an important pathway for energy transfer in a food web, with many considered keystone species (Reynolds 2013). Predators of crayfish include fish, turtles, small mammals (e.g., mink and river otters), and large birds (e.g., herons) (Nyström et al 2006;Yarra and Magoulick 2020). In addition to their ecological importance, crayfish are valued as food in many parts of the world (Lodge et al 2000), are used as bait for fish (DiStefano et al 2009), kept as pets (Faulkes 2015a), and have been used as bioindicators for water quality (Reynolds et al 2013).…”

Section: Introductionmentioning

confidence: 99%

The hidden risk of keystone invaders in Canada: a case study using nonindigenous crayfish

Brown

Therriault

2022

Can. J. Fish. Aquat. Sci.

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Invasive species have long been recognized as a serious threat to freshwater ecosystems. This is especially true for invasive species in keystone positions in food webs that can cause major disruption and can lead to unexpected outcomes. Crayfish occupy a central trophic position and non-indigenous crayfish have been shown to substantially disrupt ecosystems they invade. Here, we assess eight non-indigenous crayfish to 21 freshwater ecoregions in Canada using a screening-level risk assessment. We found that ecoregions in Canada that were warmer and contained high native freshwater diversity were most at risk from crayfish invasions, particularly: the Laurentian Great Lakes, St. Lawrence, English-Winnipeg Lakes and Coastal British Columbia ecoregions. Four crayfish species consistently had higher scores: rusty (Faxonius rusticus), virile (Faxonius virilis), signal (Pacifastacus leniusculus), and red swamp (Procambarus clarkii). Of these high-risk crayfish, only the red swamp crayfish is not yet established in Canada but is present in US waters of the transboundary Great Lakes ecoregion. Our study is the first to evaluate the relative risks that non-indigenous crayfish pose to freshwater ecosystems in Canada.

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All in moderation: crayfish populations are affected by precipitation-driven habitat availability and water quality in a non-perennial stream

Walker

Entrekin

2023

Aquat Sci

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Effect of Stream Permanence on Predation Risk of Lotic Crayfish by Riparian Predators

Cited by 4 publications

References 42 publications

Morphological traits related to potential invasiveness of two subspecies of the crayfish Faxonius neglectus

Morphological traits related to potential invasiveness of two subspecies of the crayfish Faxonius neglectus

The hidden risk of keystone invaders in Canada: a case study using nonindigenous crayfish

All in moderation: crayfish populations are affected by precipitation-driven habitat availability and water quality in a non-perennial stream

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