The Signal Crayfish Pacifastacus leniusculus — Distribution and Invasion in the Southern Baltic Coastal River

Aldona Dobrzycka-Krahel , Michał Skóra , Michał Raczyński , Anna Szaniawska

Abstract

The signal crayfish Pacifastacus leniusculus (Dana, 1852) of North American origin was introduced to Europe (to Scandinavia) in the 1960s. Since that time due to translocation to many countries, biological features and ecological plasticity, it became widespread, invasive and displaced native species. The paper reports first multi- point colonization of P. leniusculus in the Polish rivers. The aim of the study was to determine the current distribution of the signal crayfish in the coastal Baltic tributary (the River Wieprza) after 20 years of deliberate releases in its drainage area. During sampling at 28 sites with use of the “Pirate” crayfish traps and hand collection methods in spring and summer 2014, 127 P. leniusculus individuals were found at 8 sites in the Wieprza and its two tributaries, both away from and close to known sites of their introduction in 1995 and 1996 in the Wieprza River drainage area. The species spreads via the Wieprza River towards the Baltic brackish waters. With such expansion of this species, it is expected to be found in Polish coastal waters of the Baltic Sea and in other coastal rivers in the near future. The conflict between legal aspects of the signal crayfish farming, colonization by the species of the natural aquatic ecosystems and the expectations of consumers is discussed.
Author Aldona Dobrzycka-Krahel ZEEOM
Aldona Dobrzycka-Krahel,,
- Division of Experimental Ecology of Marine Organisms
, Michał Skóra SMIOwH
Michał Skóra,,
- Hel Marine Station
, Michał Raczyński IO
Michał Raczyński,,
- Institute of Oceanography
, Anna Szaniawska ZEEOM
Anna Szaniawska,,
- Division of Experimental Ecology of Marine Organisms
Other language title versions
Journal seriesPolish Journal of Ecology, ISSN 1505-2249
Issue year2017
Vol65
No3
Pages445-452
Publication size in sheets0.5
Keywords in EnglishPacifastacus leniusculus, biodiversity, alien species, expansion
DOIDOI:10.3161/15052249PJE2017.65.3.011
Languageen angielski
Score (nominal)15
ScoreMinisterial score = 15.0, 20-12-2017, ArticleFromJournal
Ministerial score (2013-2016) = 15.0, 20-12-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 0.639 (2) - 2016=0.705 (5)
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