Results 21 to 30 of about 7,514 (259)

Генетична диференціація річкових раків із водойм басейну р. Прип'ять

Науковий вісник Східноєвропейського національного університету імені Лесі Українки: Серія: Біологічні науки, 2018
На основі проведених досліджень алозимної мінливості доведено наявність у водоймах басейну річки Прип’ять трьох видів річкових раків: A. astacus, A. angulosus та A. leptodactylus. Установлено, що вид A.
Vitaliy Kostyuk, Sergey Mezhzherin, Alexander Garbar   +2 more
doaj   +1 more source

Drivers of the range expansion of the European catfish (Silurus glanis) within its native distribution. [PDF]

J Fish Biol
Abstract The European catfish Silurus glanis L. continues to spread as an invasive species in Europe. Meanwhile, increasing abundance and range expansions are also suspected within its native distribution. The objective of this study was to characterize the feeding, growth and abundance of S.
Baer J, Hüsgen S, Fromherz M, Geist J, Brinker A.   +4 more
europepmc   +2 more sources

The freshwater crayfish Austropotamobius pallipes in South Tyrol. Heritage species and bioindicator [PDF]

, 2003
Rapid decline of crayfish in European freshwaters and continuing threat necessitate integrated actions in conservation and management of native crayfish populations.
Fureder, L., Hanel, Reinhold, Leiter, J., Oberkofler, B., Thaler, B.   +4 more
core   +1 more source

DISTRIBUTION, RECENT MORTALITIES AND CONSERVATION MEASURES OF CRAYFISH IN HELLENIC FRESH WATERS

Knowledge and Management of Aquatic Ecosystems, 2007
Freshwater crayfish are found in 20 out of 53 Prefectures of Greece (38%) and they form isolated populations in relatively pristine water bodies. Three indigenous crayfish species (ICS) occur in Greek waters: Astacus astacus, Astacus leptodactylus and ...
KOUTRAKIS E., PERDIKARIS C., MACHINO Y., SAVVIDIS G., MARGARIS N.   +4 more
doaj   +1 more source

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

PLoS ONE, 2017
For several hundred years freshwater crayfish (Crustacea-Decapoda-Astacidea) have played an important ecological, cultural and culinary role in Scandinavia.
Sune Agersnap, William Brenner Larsen, Steen Wilhelm Knudsen, David Strand, Philip Francis Thomsen, Martin Hesselsøe, Peter Bondgaard Mortensen, Trude Vrålstad, Peter Rask Møller   +8 more
doaj   +1 more source

REVIEW OF THE NATIONAL RESTOCKING PROGRAMME “ACTIVE PROTECTION OF NATIVE CRAYFISH IN POLAND” 1999-2001

Knowledge and Management of Aquatic Ecosystems, 2004
After the first spread of crayfish plague (aphanomycosis) at the end of the nineteenth century, the formerly abundant populations of native crayfish in Poland declined drastically.
ŠMIETANA P., KRZYWOSZ T., STRUŻYŃSKI W.   +2 more
doaj   +1 more source

The Effects of Intraspecific Variation of Crayfish Behavior on Nutrient Cycling in Aquatic Environments [PDF]

, 2020
Human activities are rapidly altering species traits at a global scale. Yet, there remains a critical need to determine whether trait variation within species affects ecosystem responses to global change. In particular, intraspecific variation in feeding
Acheson, Paul
core  

EFFECTS OF RATION SIZE AND TEMPERATURE ON MOULT INCREMENT AND METABOLIC PARAMETERS OF JUVENILE NOBLE CRAYFISH, ASTACUS ASTACUS

Knowledge and Management of Aquatic Ecosystems, 2007
A laboratory experiment was carried out to test the combined effects of ration size (1 vs 3% body weight, b.w.) and temperature (15 ± 2 vs 22 ± 2 °C) on moult increment and metabolic parameters of 80 juvenile noble crayfish (Astacus astacus). The maximum
RENAI B., GHERARDI F., D’AGARO E.
doaj   +1 more source

EVALUATION OF THE AMERICAN WATERWEED (ELODEA CANADENSIS MICHX.) AS SUPPLEMENTAL FOOD FOR THE NOBLE CRAYFISH, ASTACUS ASTACUS

Knowledge and Management of Aquatic Ecosystems, 2004
We conducted a preliminary study to evaluate the capacity of summerling Astacus astacus to consume the American waterweed (Elodea canadensis Michx.).under artificial rearing conditions. Summerling A.
D’AGARO E., RENAI B., GHERARDI F.
doaj   +1 more source

Filling the blank spot: first report on the freshwater crayfish distribution in Albania

Knowledge and Management of Aquatic Ecosystems, 2017
The knowledge on the distribution of native and non-native crayfish species in Europe has substantially advanced during last two decades. However, data on the exact distribution of European crayfish are still lacking in some regions of the Balkan ...
Mrugała Agata, Šanda Radek, Shumka Spase, Vukić Jasna   +3 more
doaj   +1 more source