Results 21 to 30 of about 542 (151)
Exponential increase of signal crayfish in running waters in Sweden – due to illegal introductions?
Knowledge and Management of Aquatic Ecosystems, 2011 Sweden has only one indigenous species of crayfish, the noble crayfish (Astacus astacus, Fabricius). There has been a steady decline of noble crayfish populations in Sweden since 1907, mainly due to the crayfish plague.
Bohman P. +3 more
doaj +1 more source
Veterinary Microbiology, 2013 Aphanomyces astaci sporulation is crucial for the spreading potential of this disease agent. For the first time, we are reporting timing and quantity of A. astaci spores released from noble crayfish (Astacus astacus) suffering from crayfish plague under practical aquatic conditions. We infected nine noble crayfish with A.
J, Makkonen +4 more
openaire +2 more sources
STATUS OF FRESHWATER CRAYFISH IN LATVIA
Knowledge and Management of Aquatic Ecosystems, 2005 There are three crayfish species present in Latvia: the European noble crayfish (Astacus astacus), the narrow-clawed crayfish (Astacus leptodactylus), and the North-American signal crayfish (Pacifastacus leniusculus) species. Probably only noble crayfish
ARENS A., TAUGBØL T.
doaj +1 more source
CRAYFISHERIES IN FINLAND, A SHORT OVERVIEW
Knowledge and Management of Aquatic Ecosystems, 2004 Crayfish trapping and activities related to crayfishing have traditionally been lucrative businesses in rural Finland. The catch itself, varying in the 1990’s from 2 to 4 millions crayfish annually, is worth 4 to 8 millions euros.
JUSSILA J., MANNONEN A.
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Knowledge and Management of Aquatic Ecosystems, 2006 Since 1907, coinciding with the arrival of the crayfish plague, the noble crayfish (Astacus astacus) has steadily declined in Sweden. To substitute the noble crayfish fishery lost, mainly due to the plague, and since the species is highly susceptible to ...
BOHMAN P., NORDWALL F., EDSMAN L.
doaj +1 more source
Glutathione as a suitable biomarker in hepatopancreas, gills and muscle of three freshwater crayfish species [PDF]
Archives of Biological Sciences, 2008 We determined the contents of total glutathione (tGSH), reduced glutathione (GSH), and oxidized glutathione (GSSG) and values of the glutathione redox index (GSH RI) in hepatopancreas, gills, and muscle of three freshwater crayfish species: noble ...
Kovačević Tijana B. +4 more
doaj +1 more source
Knowledge and Management of Aquatic Ecosystems, 2015 The IUCN Red List indexes the noble crayfish (Astacus astacus) as vulnerable, with a declining population trend. The main threats to the species are the crayfish plague caused by the oomycete Aphanomyces astaci and the ...
Makkonen J., Kokko H., Jussila J.
doaj +1 more source
Update on the distribution of freshwater crayfish in Croatia
Knowledge and Management of Aquatic Ecosystems, 2011 Four indigenous European and two non-indigenous American freshwater crayfish species inhabit Croatian freshwater habitats. Generally, the noble crayfish (Astacus astacus), the narrow-clawed crayfish (Astacus leptodactylus) and the stone crayfish ...
Maguire I., Jelić M., Klobučar G.
doaj +1 more source
SPECIES OF BRANCHIOBDELLIDAE (ANNELIDA) ON FRESHWATER CRAYFISH IN SOUTH TYROL (NORTHERN ITALY)
Knowledge and Management of Aquatic Ecosystems, 2002 Twenty-eight freshwater crayfish were collected from 8 streams and one small lake in the province of South Tyrol (North Italy) from autumn 1999 to spring 2001, in order to investigate the presence of branchiobdellidans.
OBERKOFLER B. +6 more
doaj +1 more source
Spatial dynamics of the noble crayfish (Astacus astacus, L.) in the Paklenica National Park [PDF]
Knowledge and Management of Aquatic Ecosystems, 2008 The aim of this work was to analyse the spatial dynamics of a noble crayfish population inhabiting the Velika Paklenica Stream (Paklenica National Park, Croatia). The study was conducted in July 2000, and between March and September 2002.
Hudina S., Maguire I., Klobučar G. I.V.
doaj +2 more sources