Results 21 to 30 of about 231,491 (215)

Narrow-clawed crayfish in Finland: Aphanomyces astaci resistance and genetic relationship to other selected European and Asian populations [PDF]

open access: yesKnowledge and Management of Aquatic Ecosystems, 2020
The narrow-clawed crayfish (Pontastacus leptodactylus) is an alien species in Finland with only a few populations reported from the southeastern region during the last century.
Jussila Japo   +4 more
doaj   +3 more sources

Host-pathogen coevolution drives innate immune response to Aphanomyces astaci infection in freshwater crayfish: transcriptomic evidence [PDF]

open access: yesBMC Genomics, 2022
Background For over a century, scientists have studied host-pathogen interactions between the crayfish plague disease agent Aphanomyces astaci and freshwater crayfish.
Ljudevit Luka Boštjančić   +12 more
doaj   +2 more sources

Spatial dynamics of the noble crayfish (Astacus astacus, L.) in the Paklenica National Park [PDF]

open access: diamondKnowledge 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   +4 more sources

Native European crayfish Astacus astacus competitive in staged confrontation with the invasive crayfish Faxonius limosus and Procambarus acutus. [PDF]

open access: yesPLoS ONE, 2022
The European native, noble crayfish (Astacus astacus) has suffered from a serious and long term population decline due to habitat destruction, water pollution and the impact of the invasive North American crayfish that are carriers of the crayfish plague
Ivo Roessink   +3 more
doaj   +2 more sources

Evaluation of visual encounter surveys of the noble crayfish, Astacus astacus , and the spiny-cheek crayfish, Orconectes limosus [PDF]

open access: diamondFisheries & Aquatic Life, 2019
Several methods of sampling are commonly used to detect freshwater crayfish (Decapoda: Malacostraca). Many of them are laborious, time-consuming, and require dedicated equipment.
Maciej Bonk   +3 more
openalex   +2 more sources

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

open access: diamondKnowledge 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   +2 more sources

UTILIZATION OF WATER CRESS (NASTURTIUM OFFICINALE L.) IN NOBLE CRAYFISH (ASTACUS ASTACUS) FEEDING [PDF]

open access: bronzeBulletin Français de la Pêche et de la Pisciculture, 2006
Juvenile Astacus astacus (initial b.w.: 0.98 ± 0.06 g) were cultured (30 crayfish/m2) in 200l tanks for 69 days. The experimental design was composed of three treatments as follows: control diet (C) (crude protein: 28.4% of the total dried matter, “DM”; ether extract: 6.22% DM), water cress (W) (crude protein: 20.7% DM; ether extract: 1.9% DM) and ...
Edo D’Agaro
openalex   +3 more sources

The distribution of branchiobdellidan worms (Annelida: Clitellata) on the noble crayfish, Astacus astacus, in the Transcarpathian region, Ukraine

open access: diamondThe Journal of V. N. Karazin Kharkiv National University, Series "Biology"
This study explores the distribution, abundance, and diversity of branchiobdellidans on freshwater crayfish in the Zakarpattia (Transcarpathian) region of Ukraine, focusing on populations in the Tereblya River and Lake Synevir.
Mariia Shrestkha, Serge Utevsky
openalex   +2 more sources

Differing virulence of Aphanomyces astaci isolates and elevated resistance of noble crayfish Astacus astacus against crayfish plague [PDF]

open access: bronzeDiseases of Aquatic Organisms, 2012
Crayfish plague epidemics (caused by Aphanomyces astaci) have been causing population collapses among native European crayfish stocks since the late 1800s. Recent indirect and direct evidence has shown that its virulence has been variable, with native European crayfish even acting as carriers. We tested the differences in A.
Jenny Makkonen   +4 more
openalex   +3 more sources

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

open access: bronzeKnowledge 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   +2 more sources

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