Results 21 to 30 of about 565 (161)

CRAYFISHERIES IN FINLAND, A SHORT OVERVIEW

open access: yesKnowledge 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

THE EFFECT OF THE LARGE-SCALE INTRODUCTION OF SIGNAL CRAYFISH ON THE SPREAD OF CRAYFISH PLAGUE IN SWEDEN

open access: yesKnowledge 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]

open access: yesArchives 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

Mitochondrial cytochrome oxidase I gene analysis indicates a restricted genetic background in Finnish noble crayfish (Astacus astacus) stocks

open access: yesKnowledge 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

open access: yesKnowledge 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)

open access: yesKnowledge 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]

open access: yesKnowledge 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

DEVELOPMENT OF A HABITAT SUITABILITY INDEX FOR THE NOBLE CRAYFISH ASTACUS ASTACUS USING FUZZY MODELLING

open access: yesKnowledge and Management of Aquatic Ecosystems, 2005
A Geographic Information System (GIS) and fuzzy modelling were used to develop a habitat suitability index for the noble crayfish, Astacus astacus. The model is based on crayfish distribution data for the federal state Hesse, Germany, which had been ...
ZUTHER S.   +3 more
doaj   +1 more source

In search of the unexpected: the first finding of an islandic population of the noble crayfish Astacus astacus in Greece redefines its distribution

open access: yesKnowledge and Management of Aquatic Ecosystems, 2022
This contribution presents the first record of the noble crayfish Astacus astacus (Linnaeus, 1758) in Euboea (Evia) Island, Greece. The crayfish was found during a fish monitoring expedition in the upper Mesapios River, in a reach that maintains flow ...
Karaouzas Ioannis   +6 more
doaj   +1 more source

Food Contamination and Safety in Nigeria: A Systematic Synthesis of Heavy Metals, Microbial Pathogens, and Health Risk Metrics

open access: yesFood Safety and Health, EarlyView.
This is an infographic driver of food contaminants and health effects. ABSTRACT Food safety remains a critical challenge in Nigeria due to rapid urbanization and weak regulatory enforcement. This systematic review synthesizes empirical evidence from 2015 to 2025 to characterize food contaminant profiles and associated human health risks in Nigeria ...
Cecilia Nwadiuto Obasi   +6 more
wiley   +1 more source

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