Results 11 to 20 of about 2,973 (161)
MORPHOLOGICAL CHANGES IN ASTACUS ASTACUS GONADS DURING THE REPRODUCTIVE CYCLE
Knowledge and Management of Aquatic Ecosystems, 2006 The reproductive cycle of Astacus astacus was described by the external observation of the gonads, recording changes in the gonadosomatic index (GSI) and by the histological analysis of the reproductive organs.
LUCIĆ A., ERBEN R., LACKOVIĆ G.
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UTILIZATION OF WATER CRESS (NASTURTIUM OFFICINALE L.) IN NOBLE CRAYFISH (ASTACUS ASTACUS) FEEDING [PDF]
Knowledge and Management of Aquatic Ecosystems, 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 ...
D’AGARO E.
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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.
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Knowledge 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
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Density and yield of the noble crayfish Astacus astacus in the River Skotsbergelva, SE Norway
Fauna Norvegica, 1990 The population density and yield of the noble crayfish Astacus astacus was estimated on two localities in the River Skotsbergelva in the Halden river system, SE Norway, in August 1989.
Leif Asbjørn Vollestad +1 more
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REINTRODUCTION OF ASTACUS ASTACUS L. IN EAST TYROL, AUSTRIA
Knowledge and Management of Aquatic Ecosystems, 2004 In Tyrolean like in other European freshwaters, crayfish populations decreased in numbers and qualities. They are today regarded as endangered animals. The Astacus astacus (Linnaeus, 1758) population of historical evidence in Tristacher See and its out ...
SINT D., FÜREDER L.
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, 1998 A fungus identified as Aphanomyces astaci was isolated from two crayfish plague epizootics among noble crayfish, Astacus astacus, in Central Finland.
Söderhäll, Kenneth, +2 more
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Detection of Novel RNA Viruses in wild Noble Crayfish (Astacus astacus): a Virome Analysis in Swiss water bodies. [PDF]
, 2023 European native crayfish populations are undergoing a strong decline due to environmental factors and the introduction of highly competitive non-native species. Pathogens are an additional threat to native crayfish.
Zingre, Tatiana Paolina +6 more
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The contralateral coordination of walking in the crayfish Astacus leptodactylus. II. Model calculations [PDF]
, 1991 Müller U, Cruse H. The contralateral coordination of walking in the crayfish Astacus leptodactylus. II. Model calculations. Biol. Cybern.
Müller, Uwe, Cruse, Holk
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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 +2 more
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