MIGRATORY ABILITY OF ORCONECTES LIMOSUS THROUGH A FISHPASS AND NOTES ON ITS OCCURRENCE IN THE CZECH REPUBLIC
The occurrence of the spiny-cheek crayfish in the Czech Republic was first reported in the 1980´s in the Elbe River and is a result of its upstream migration from Germany. This study confirms that this species occurs in many other localities across the Czech Republic. Its migration ability was exper...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2004-01-01
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| Series: | Knowledge and Management of Aquatic Ecosystems |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1051/kmae:2004010 |
| _version_ | 1828494322552537088 |
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| author | KOZÁK P. POLICAR T. ĎURIŠ Z. |
| author_facet | KOZÁK P. POLICAR T. ĎURIŠ Z. |
| author_sort | KOZÁK P. |
| collection | DOAJ |
| description | The occurrence of the spiny-cheek crayfish in the Czech Republic was first reported in the 1980´s in the Elbe River and is a result of its upstream migration from Germany. This study confirms that this species occurs in many other localities across the Czech Republic. Its migration ability was experimentally studied at a thirty-chambers fishpass located at a hydroelectric power station in the Elbe River. Group-marked crayfish were placed into 3 selected chambers. Their up- and downstream movement was then registered for 30 min after crayfish stocking. We found that a large portion of the experimental crayfish was passively carried along the stream and was caught in the lowest chamber. The movement of crayfish against the water current towards the higher-positioned chambers was not recorded. However, crayfish showed to have a high ability to hold their position in a strong water flow. Overall, 56.7 ± 9.43%, 6.7 ± 9.43% and 3.3 ± 4.71% of crayfish remained in the chamber of insertion and 23.3 ± 4.71%, 30.0 ± 14.14% and 26.7 ± 17.00% of crayfish migrated to the lower-positioned chambers. |
| first_indexed | 2024-12-11T11:54:09Z |
| format | Article |
| id | doaj.art-6ce69bae17854846ba31b6f88eab5e81 |
| institution | Directory Open Access Journal |
| issn | 1961-9502 |
| language | English |
| last_indexed | 2024-12-11T11:54:09Z |
| publishDate | 2004-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Knowledge and Management of Aquatic Ecosystems |
| spelling | doaj.art-6ce69bae17854846ba31b6f88eab5e812022-12-22T01:08:15ZengEDP SciencesKnowledge and Management of Aquatic Ecosystems1961-95022004-01-010372-37336737310.1051/kmae:2004010kmae2004372p367MIGRATORY ABILITY OF ORCONECTES LIMOSUS THROUGH A FISHPASS AND NOTES ON ITS OCCURRENCE IN THE CZECH REPUBLICKOZÁK P.POLICAR T.ĎURIŠ Z.The occurrence of the spiny-cheek crayfish in the Czech Republic was first reported in the 1980´s in the Elbe River and is a result of its upstream migration from Germany. This study confirms that this species occurs in many other localities across the Czech Republic. Its migration ability was experimentally studied at a thirty-chambers fishpass located at a hydroelectric power station in the Elbe River. Group-marked crayfish were placed into 3 selected chambers. Their up- and downstream movement was then registered for 30 min after crayfish stocking. We found that a large portion of the experimental crayfish was passively carried along the stream and was caught in the lowest chamber. The movement of crayfish against the water current towards the higher-positioned chambers was not recorded. However, crayfish showed to have a high ability to hold their position in a strong water flow. Overall, 56.7 ± 9.43%, 6.7 ± 9.43% and 3.3 ± 4.71% of crayfish remained in the chamber of insertion and 23.3 ± 4.71%, 30.0 ± 14.14% and 26.7 ± 17.00% of crayfish migrated to the lower-positioned chambers.http://dx.doi.org/10.1051/kmae:2004010CrayfishOrconectes limosusdistributionCzech Republicactivitymigrationfishpass |
| spellingShingle | KOZÁK P. POLICAR T. ĎURIŠ Z. MIGRATORY ABILITY OF ORCONECTES LIMOSUS THROUGH A FISHPASS AND NOTES ON ITS OCCURRENCE IN THE CZECH REPUBLIC Knowledge and Management of Aquatic Ecosystems Crayfish Orconectes limosus distribution Czech Republic activity migration fishpass |
| title | MIGRATORY ABILITY OF ORCONECTES LIMOSUS THROUGH A FISHPASS AND NOTES ON ITS OCCURRENCE IN THE CZECH REPUBLIC |
| title_full | MIGRATORY ABILITY OF ORCONECTES LIMOSUS THROUGH A FISHPASS AND NOTES ON ITS OCCURRENCE IN THE CZECH REPUBLIC |
| title_fullStr | MIGRATORY ABILITY OF ORCONECTES LIMOSUS THROUGH A FISHPASS AND NOTES ON ITS OCCURRENCE IN THE CZECH REPUBLIC |
| title_full_unstemmed | MIGRATORY ABILITY OF ORCONECTES LIMOSUS THROUGH A FISHPASS AND NOTES ON ITS OCCURRENCE IN THE CZECH REPUBLIC |
| title_short | MIGRATORY ABILITY OF ORCONECTES LIMOSUS THROUGH A FISHPASS AND NOTES ON ITS OCCURRENCE IN THE CZECH REPUBLIC |
| title_sort | migratory ability of orconectes limosus through a fishpass and notes on its occurrence in the czech republic |
| topic | Crayfish Orconectes limosus distribution Czech Republic activity migration fishpass |
| url | http://dx.doi.org/10.1051/kmae:2004010 |
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