Predominance of exotic and introduced species among sturgeons captured from the Baltic and North Seas and their watersheds, 1981-1999
ABSTRACT Sturgeon catches (n = 256) from 1981-1999 reported mainly by commercial fishermen and anglers in German, Polish, and Dutch coastal waters and tributaries were analysed. During the study period, 20 % of catches were reported from coastal waters and 65 % from rivers and estuaries of large riv...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.1084.5796 2023-05-15T13:01:53+02:00 Predominance of exotic and introduced species among sturgeons captured from the Baltic and North Seas and their watersheds, 1981-1999 G M Arndt J Gessner E Anders S Spratte J Filipiak L Debus K Skora The Pennsylvania State University CiteSeerX Archives 2000 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1084.5796 http://www.hel.univ.gda.pl/info/16_029-036.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1084.5796 http://www.hel.univ.gda.pl/info/16_029-036.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.hel.univ.gda.pl/info/16_029-036.pdf text 2000 ftciteseerx 2020-05-03T00:30:38Z ABSTRACT Sturgeon catches (n = 256) from 1981-1999 reported mainly by commercial fishermen and anglers in German, Polish, and Dutch coastal waters and tributaries were analysed. During the study period, 20 % of catches were reported from coastal waters and 65 % from rivers and estuaries of large river systems, including the Odra, Elbe, Rhine and Weser. The data indicate that, from 1981-1993, there was a major decline in the Atlantic sturgeon Acipenser sturio L., 1758, and an increase in the total catches of non-indigenous sturgeon species. The Siberian sturgeon Acipenser baerii Brandt, 1869, the Russian sturgeon Acipenser gueldenstaedtii Brandt & Ratzeberg, 1833, and various hybrids dominated. Occasional catches of the white sturgeon Acipenser transmontanus Richardson, 1836 and the sterlet Acipenser ruthenus L., 1758 were also reported. During the study period, significant changes in species composition and distribution of catches were observed. The predominance of non-indigenous sturgeon species is a result of the increasingly intensive sturgeon aquaculture activities in Germany, Poland, and the Netherlands. The most frequently reared species now dominate the catches. In addition to these escapees from fish farms, several intentional releases of sturgeons were reported. The results show that introduced exotic sturgeon species may thrive under certain natural conditions. Therefore, they may interfere with restoration efforts for the native A. sturio, competing for habitat and introducing diseases and hybridization. Key words: Acipenser, aquaculture, introductions, distribution, conservation. RESUMEN Text Acipenser baerii Siberian sturgeon Unknown |
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ftciteseerx |
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English |
description |
ABSTRACT Sturgeon catches (n = 256) from 1981-1999 reported mainly by commercial fishermen and anglers in German, Polish, and Dutch coastal waters and tributaries were analysed. During the study period, 20 % of catches were reported from coastal waters and 65 % from rivers and estuaries of large river systems, including the Odra, Elbe, Rhine and Weser. The data indicate that, from 1981-1993, there was a major decline in the Atlantic sturgeon Acipenser sturio L., 1758, and an increase in the total catches of non-indigenous sturgeon species. The Siberian sturgeon Acipenser baerii Brandt, 1869, the Russian sturgeon Acipenser gueldenstaedtii Brandt & Ratzeberg, 1833, and various hybrids dominated. Occasional catches of the white sturgeon Acipenser transmontanus Richardson, 1836 and the sterlet Acipenser ruthenus L., 1758 were also reported. During the study period, significant changes in species composition and distribution of catches were observed. The predominance of non-indigenous sturgeon species is a result of the increasingly intensive sturgeon aquaculture activities in Germany, Poland, and the Netherlands. The most frequently reared species now dominate the catches. In addition to these escapees from fish farms, several intentional releases of sturgeons were reported. The results show that introduced exotic sturgeon species may thrive under certain natural conditions. Therefore, they may interfere with restoration efforts for the native A. sturio, competing for habitat and introducing diseases and hybridization. Key words: Acipenser, aquaculture, introductions, distribution, conservation. RESUMEN |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
G M Arndt J Gessner E Anders S Spratte J Filipiak L Debus K Skora |
spellingShingle |
G M Arndt J Gessner E Anders S Spratte J Filipiak L Debus K Skora Predominance of exotic and introduced species among sturgeons captured from the Baltic and North Seas and their watersheds, 1981-1999 |
author_facet |
G M Arndt J Gessner E Anders S Spratte J Filipiak L Debus K Skora |
author_sort |
G M Arndt |
title |
Predominance of exotic and introduced species among sturgeons captured from the Baltic and North Seas and their watersheds, 1981-1999 |
title_short |
Predominance of exotic and introduced species among sturgeons captured from the Baltic and North Seas and their watersheds, 1981-1999 |
title_full |
Predominance of exotic and introduced species among sturgeons captured from the Baltic and North Seas and their watersheds, 1981-1999 |
title_fullStr |
Predominance of exotic and introduced species among sturgeons captured from the Baltic and North Seas and their watersheds, 1981-1999 |
title_full_unstemmed |
Predominance of exotic and introduced species among sturgeons captured from the Baltic and North Seas and their watersheds, 1981-1999 |
title_sort |
predominance of exotic and introduced species among sturgeons captured from the baltic and north seas and their watersheds, 1981-1999 |
publishDate |
2000 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1084.5796 http://www.hel.univ.gda.pl/info/16_029-036.pdf |
genre |
Acipenser baerii Siberian sturgeon |
genre_facet |
Acipenser baerii Siberian sturgeon |
op_source |
http://www.hel.univ.gda.pl/info/16_029-036.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1084.5796 http://www.hel.univ.gda.pl/info/16_029-036.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766289249082015744 |