Competition for food between an introduced crayfish and two fishes endemic to the Colorado River basin

Carpenter, John E.

doi:10.1007/s10641-004-2588-z

Cited by 42 publications

(36 citation statements)

References 25 publications

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“…Contrasting previous studies have reported that invasive crayfish can affect benthic fish density (Wilson et al 2004, Carpenter 2005, Hirsch and Fischer 2008 or do not have any significant influence on littoral fish (Ruokonen et al 2012). Thus effects on littoral benthic fish communities probably can be expected to vary considerably, depending on the density and size structure of the crayfish population, the fish species present, and the littoral habitat structure.…”

Section: Temporal Effects Of Signal Crayfish On Littoral Macroinvertementioning

confidence: 71%

The introduced signal crayfish and native noble crayfish have different effects on sublittoral macroinvertebrate assemblages in boreal lakes

et al. 2015

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Summary We investigated differences in the abundance, community composition and taxon richness of sublittoral macroinvertebrates in boreal lakes containing introduced invasive signal crayfish (Pacifastacus leniusculus) or native noble crayfish (Astacus astacus). We hypothesised that sublittoral macroinvertebrate assemblages in lakes containing noble crayfish, which reportedly prefer the shallow littoral, would differ little from those in lakes without crayfish, in contrast to assemblages in lakes containing signal crayfish, which reportedly forage at greater depths. In a set of 24 small and medium‐sized Finnish lakes, eight lakes contained signal crayfish, eight had noble crayfish and eight control lakes had no crayfish. At three sites per lake, we sampled macroinvertebrates quantitatively from soft sediment in the sublittoral. The sublittoral macroinvertebrate assemblage in lakes with noble crayfish and control lakes was similar. In contrast, lakes with signal crayfish had a lower density of Trichoptera and Ephemeroptera, as well as a lower density and species richness of Chironomidae, and a lower overall benthic density and taxon richness. In contrast to some previous reports from other habitats, we infer that introduced signal crayfish have stronger negative effects than native noble crayfish on sublittoral macroinvertebrates. Hence, the ecological equivalence or differences of crayfish species cannot be generalised across habitats.

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Section: Temporal Effects Of Signal Crayfish On Littoral Macroinvertementioning

confidence: 71%

The introduced signal crayfish and native noble crayfish have different effects on sublittoral macroinvertebrate assemblages in boreal lakes

et al. 2015

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“…They also are able to successfully compete with native fishes for food and cover (Carpenter 2005;Arizona Game and Fish Department 2006;USDI Geological Survey 2006).…”

Section: Fish Species Historymentioning

confidence: 99%

Synthesis of Upper Verde River research and monitoring 1993-2008

Neary¹,

Medina²,

Rinne³

2012

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This volume is a state-of-knowledge synthesis of monitoring and research conducted on the Upper Verde River (UVR) of Arizona. It contains information on the history, hydrology, soils, geomorphology, vegetation, and fish fauna of the area that can help land managers and other scientists in successfully conducting ecosystem management and future monitoring and research in this important Southwest river ecosystem. Chapter 1 provides an introduction to the UVR's location, vegetation, climate, soils, and watersheds. A historical and pictorial perspective of the UVR is presented in Chapter 2. The hydrology of the watershed and its current physical condition are covered in Chapters 3 and 4. Geomorphic relationships of the UVR channels are described in Chapter 5. The woody and herbaceous vegetation of the UVR are presented in Chapters 6 and 7. Water quality status and issues of the river are discussed in Chapter 8. The status of the fish fauna and other aquatic organisms are described in Chapter 9. Chapters 10 through 12 present summaries of information resources, research recommendations, a summary of this volume, and conclusions. You may order additional copies of this publication by sending your mailing information in label form through one of the following media. Please specify the publication title and series number. Publishing Services

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“…Native fish may interact with native crayfish in several ways, including predation and competition for resources, directly or through altering habitats or food-webs, resulting in broad impacts on littoral communities. Carpenter (2005) showed that when Orconectes virilis was introduced to the Colorado River basin, native fish growth was reduced as a result of competition for food, but crayfish were not themselves affected. Kirk and Smock (2000) noted the effect of size on competitive outcomes for shelter between the crayfish Cambarus longulus and a megalopteran larva.…”

Section: Interactions Between Indigenous Crayfish Species (Ics) and Fishmentioning

confidence: 99%

A review of ecological interactions between crayfish and fish, indigenous and introduced

Reynolds

2011

Knowl. Managt. Aquatic Ecosyst.

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Competition for food between an introduced crayfish and two fishes endemic to the Colorado River basin

Cited by 42 publications

References 25 publications

The introduced signal crayfish and native noble crayfish have different effects on sublittoral macroinvertebrate assemblages in boreal lakes

The introduced signal crayfish and native noble crayfish have different effects on sublittoral macroinvertebrate assemblages in boreal lakes

Synthesis of Upper Verde River research and monitoring 1993-2008

A review of ecological interactions between crayfish and fish, indigenous and introduced

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