The impact of signal crayfish (Pacifastacus leniusculus) on the recruitment of salmonid fish in a headwater stream in Yorkshire, England
Signal crayfish (Pacifastacus leniusculus) have become increasingly widespread in rivers in Great Britain since their introduction in the late 1970s, causing extensive losses of indigenous white-clawed crayfish and negative impacts on communities of aquatic plants, invertebrates and benthic fish. An...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2009-01-01
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| Series: | Knowledge and Management of Aquatic Ecosystems |
| Subjects: | |
| Online Access: | http://www.kmae-journal.org/articles/kmae/pdf/2009/03/kmae09022.pdf |
| _version_ | 1818755449840730112 |
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| author | S. Peay N. Guthrie J. Spees E. Nilsson P. Bradley |
| author_facet | S. Peay N. Guthrie J. Spees E. Nilsson P. Bradley |
| author_sort | S. Peay |
| collection | DOAJ |
| description | Signal crayfish (Pacifastacus leniusculus) have become increasingly widespread in rivers in Great Britain since their introduction in the late 1970s, causing extensive losses of indigenous white-clawed crayfish and negative impacts on communities of aquatic plants, invertebrates and benthic fish. Angling interests are increasingly concerned about possible impacts of signal crayfish on brown trout, sea trout (Salmo trutta) and Atlantic salmon (S. salar). This study of a limestone headwater stream in the Pennine uplands, Yorkshire, compares density of fish and two species of crayfish in two years. Signal crayfish are progressively replacing white-clawed crayfish. Surveys showed a significant negative relationship between the fish and signal crayfish. Sites with white-clawed crayfish (1–2 crayfish/trap night) had abundant juvenile trout (> 47·100 m−2). Signal crayfish reached higher abundance (4–8 crayfish/trap night) and those sites had fewer fish (0 − 18.8·100 m−2). The signal crayfish population will expand to other tributaries over time. If similar reduction of salmonid recruitment occurs in those streams, there is potential for significant impacts on an important recreational fishery. |
| first_indexed | 2024-12-18T05:39:20Z |
| format | Article |
| id | doaj.art-bb3bc2f526184406b36c5f9991632f85 |
| institution | Directory Open Access Journal |
| issn | 1961-9502 |
| language | English |
| last_indexed | 2024-12-18T05:39:20Z |
| publishDate | 2009-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Knowledge and Management of Aquatic Ecosystems |
| spelling | doaj.art-bb3bc2f526184406b36c5f9991632f852022-12-21T21:19:13ZengEDP SciencesKnowledge and Management of Aquatic Ecosystems1961-95022009-01-01394-39512The impact of signal crayfish (Pacifastacus leniusculus) on the recruitment of salmonid fish in a headwater stream in Yorkshire, EnglandS. PeayN. GuthrieJ. SpeesE. NilssonP. BradleySignal crayfish (Pacifastacus leniusculus) have become increasingly widespread in rivers in Great Britain since their introduction in the late 1970s, causing extensive losses of indigenous white-clawed crayfish and negative impacts on communities of aquatic plants, invertebrates and benthic fish. Angling interests are increasingly concerned about possible impacts of signal crayfish on brown trout, sea trout (Salmo trutta) and Atlantic salmon (S. salar). This study of a limestone headwater stream in the Pennine uplands, Yorkshire, compares density of fish and two species of crayfish in two years. Signal crayfish are progressively replacing white-clawed crayfish. Surveys showed a significant negative relationship between the fish and signal crayfish. Sites with white-clawed crayfish (1–2 crayfish/trap night) had abundant juvenile trout (> 47·100 m−2). Signal crayfish reached higher abundance (4–8 crayfish/trap night) and those sites had fewer fish (0 − 18.8·100 m−2). The signal crayfish population will expand to other tributaries over time. If similar reduction of salmonid recruitment occurs in those streams, there is potential for significant impacts on an important recreational fishery.http://www.kmae-journal.org/articles/kmae/pdf/2009/03/kmae09022.pdfbiological invasioncrayfishimpactfish |
| spellingShingle | S. Peay N. Guthrie J. Spees E. Nilsson P. Bradley The impact of signal crayfish (Pacifastacus leniusculus) on the recruitment of salmonid fish in a headwater stream in Yorkshire, England Knowledge and Management of Aquatic Ecosystems biological invasion crayfish impact fish |
| title | The impact of signal crayfish (Pacifastacus leniusculus) on the recruitment of salmonid fish in a headwater stream in Yorkshire, England |
| title_full | The impact of signal crayfish (Pacifastacus leniusculus) on the recruitment of salmonid fish in a headwater stream in Yorkshire, England |
| title_fullStr | The impact of signal crayfish (Pacifastacus leniusculus) on the recruitment of salmonid fish in a headwater stream in Yorkshire, England |
| title_full_unstemmed | The impact of signal crayfish (Pacifastacus leniusculus) on the recruitment of salmonid fish in a headwater stream in Yorkshire, England |
| title_short | The impact of signal crayfish (Pacifastacus leniusculus) on the recruitment of salmonid fish in a headwater stream in Yorkshire, England |
| title_sort | impact of signal crayfish pacifastacus leniusculus on the recruitment of salmonid fish in a headwater stream in yorkshire england |
| topic | biological invasion crayfish impact fish |
| url | http://www.kmae-journal.org/articles/kmae/pdf/2009/03/kmae09022.pdf |
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