Results 1 to 10 of about 152 (118)

Monitoring of noble, signal and narrow-clawed crayfish using environmental DNA from freshwater samples [PDF]

open access: yesPLoS ONE, 2017
For several hundred years freshwater crayfish (Crustacea-Decapoda-Astacidea) have played an important ecological, cultural and culinary role in Scandinavia.
Sune Agersnap, , Trude Vrålstad
exaly   +6 more sources

Recovering Turkish narrow clawed crayfish (Astacus leptodactylus) populations carryAphanomyces astaci [PDF]

open access: yesKnowledge and Management of Aquatic Ecosystems, 2012
Crayfish stocks collapsed in Turkey in mid 1980’s due to crayfish plague epidemics, with up to 25% survival in some cases. The collapsed stocks have then recovered slowly and commercial crayfish fishery was reinitiated gradually ...
Kokko H.   +5 more
exaly   +4 more sources

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   +6 more sources

Fusarium oxysporum causes black gill disease in narrow-clawed crayfish Pontastacus leptodactylus

open access: yesDiseases of Aquatic Organisms, 2022
Morphological and molecular analyses were carried out to determine the causative agent of black gill disease in narrow-clawed crayfish Pontastacus leptodactylus specimens collected from 6 lakes (Taşkısığı, Beyşehir, Karaidemir, Karataş, Manyas, and Gölhisar) in Turkey.
Yigit Tastan, Ifakat Tulay Cagatay
exaly   +4 more sources

Effect of chloride content in water on heart rate in narrow-clawed crayfish (Astacus leptodactylus) [PDF]

open access: yesKnowledge and Management of Aquatic Ecosystems, 2009
A non-invasive method of recording cardiac activity was used to examine the impact of chloride level in water on narrow-clawed crayfish. This method permits one to record heart rate without any harm to the animal, and also locates changes in the shape ...
P. Kozák   +5 more
doaj   +3 more sources

Analysis of linear-weight parameters of narrow-clawed crayfish (Astacus) in water reservoirs of Dnipropetrovsk region

open access: yesБіологія тварин, 2023
This research focuses on studying the narrow-clawed crayfish in the Dnipropetrovsk region. The narrow-clawed crayfish, Astacus leptodactylus, is a crucial component of industrial fisheries and plays a significant role in the development of aquatic ...
I. I. Borovyk, O. M. Marenkov
doaj   +2 more sources

Observations of crayfish plague infections in commercially important narrow-clawed crayfish populations in Turkey

open access: yesKnowledge and Management of Aquatic Ecosystems, 2018
We studied the presence of possible Aphanomyces astaci infections in eight Turkish narrow-clawed crayfish (Astacus leptodactylus) populations by analyzing the prevalence and genotypes of the disease agent A. astaci. The qPCR analyses revealed A.
Japo Jussila   +2 more
exaly   +2 more sources

CONFIRMATION OF OCCURRENCE OF THE NARROW-CLAWED CRAYFISH ? STACUS LEPTODACTYLUS ESCHSCHOLTZ, 1823 IN THE RIVER EVROS IN GREECE [PDF]

open access: yesKnowledge and Management of Aquatic Ecosystems, 2007
The narrow-clawed crayfish Astacus leptodactylus Eschscholtz, 1823, is widely distributed in eastern European and western Asian countries. However, species presence in Greece was documented only by limited museum conserved specimens dating back to 1893 ...
PERDIKARIS C.   +3 more
doaj   +2 more sources

Dietary garlic (Allium sativum) powder improved zootechnical performance, digestive enzymes activity, and innate immunity in narrow-clawed crayfish (Postantacus leptodactylus)

open access: yesAquaculture Reports, 2022
In this study, the dietary effect of garlic powder (GP) as an herbal supplement on the growth performance, digestive enzymes, innate immunity, and antioxidant capacity of narrow-clawed crayfish, Postantacus leptodactylus, was investigated.
Mehdi Shamsaie Mehrgan, Hamed Paknejad
exaly   +3 more sources

New codend designs to improve the size selectivity of fyke net for narrow-clawed crayfish (Pontastacus leptodactylus)

open access: yesAquatic Living Resources, 2022
The narrow-clawed crayfish (Pontastacus leptodactylus) is one of the most ecologically and economically important freshwater species in Turkey. However, the harvest of this species has declined from 7937 t in 1984 to 696 t in 2019. One of primary reasons
Cilbiz Mehmet   +2 more
doaj   +5 more sources

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