Results 31 to 40 of about 424 (153)
Expansion of the marbled crayfish in Slovakia: beginning of an invasion in the Danube catchment?
Journal of Limnology, 2016 The marbled crayfish, Procambarus fallax f. virginalis, is a taxon widely available in the aquarium pet trade, which has been introduced to open waters in several European countries and in Madagascar.
Boris Lipták +6 more
doaj +1 more source
Knowledge and Management of Aquatic Ecosystems, 2006 There are only very limited reports about the occurrence of the crayfish plague in Czechia. In recent years, mass mortalities of Astacus spp. with symptoms of possible crayfish plague were noticed in three streams in the country two in Central Bohemia (
KOZUBÍKOVÁ E. +6 more
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.
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
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
Knowledge and Management of Aquatic Ecosystems, 2006 The tendency of population decline of the indigenous crayfish, Austropotamobius pallipes, in Navarra was reduced by the implementation of a plan of restoration in 1996. Recently, a new drop in population numbers has been noticed.
DIÉGUEZ-URIBEONDO J.
doaj +1 more source
Simultaneous detection of invasive signal crayfish, endangered white-clawed crayfish and the crayfish plague pathogen using environmental DNA [PDF]
Biological Conservation, 2018 ABSTRACTAquatic Invasive Species (AIS) are important vectors for the introduction of novel pathogens which can, in turn, become drivers of rapid ecological and evolutionary change, compromising the persistence of native species. Conservation strategies rely on accurate information regarding presence and distribution of AIS and their associated ...
Chloe Victoria Robinson +4 more
openaire +2 more sources
Frontiers in Ecology and Evolution, 2021 Dams are among the most prevalent and extreme alterations humans have perpetrated on fluvial systems. The dramatic physical and biological changes caused by dams have been synthesized for many aquatic faunal groups, but not for crayfishes.
Zanethia C. Barnett, Susan B. Adams
doaj +1 more source
Knowledge and Management of Aquatic Ecosystems, 2000 The white-clawed crayfish, Austropotamobius pallipes, is the only native species of freshwater crayfish in Spain. This species sustained a first-magnitude inland fishery up to the end of 1970's, when the crayfish plague struck the Spanish waters.
ALONSO F. +2 more
doaj +1 more source
LACK OF SPECIFICITY OF THE MOLECULAR DIAGNOSTIC METHOD FOR IDENTIFICATION OF APHANOMYCES ASTACI
Knowledge and Management of Aquatic Ecosystems, 2007 A recent PCR-test developed for identification of Aphanomyces astaci, the organism responsible for crayfish plague, provided false positives for Aphanomyces frigidophilus, Aphanomyces repetans, and some Saprolegnia spp. Real-time PCR showed that with the
BALLESTEROS I. +5 more
doaj +1 more source