Results 91 to 100 of about 6,082 (218)

Morphology of the narrow-clawed crayfish (Astacus leptodactylus Eschscholtz, 1823) in the north-west Croatia [PDF]

open access: yes, 2017
Astacus leptodactylus jedna je od četiri nativne vrste porodice Astacidae u Hrvatskoj, ujedno je i ključna vrsta u slatkovodnim ekosustavima. Unatoč važnosti vrste A. leptodactylus, općenito nedostaju podaci o toj vrsti na europskom nivou.
Preininger, Tamara
core   +1 more source

Evaluation of different dietary protein and energy levels on growth performance and body composition of narrow clawed crayfish (Astacus leptodactylus) [PDF]

open access: yes, 2012
Nine practical diets containing increasing percentages of crude protein (CP) and energy (30%, 35%, 40% and 300kcal/100g, 370kcal/100g and 450kcal/100g) were fed to narrow clawed crayfish (mean individual weight=17±2.3 g) during an 8 week feeding trial ...
Ghiasvand, Z.   +4 more
core  

ASSESSMENT OF DNA VARIATIONS OF THE NOBLE CRAYFISH (ASTACUS ASTACUS L.) IN GERMANY AND POLAND USING INTER-SIMPLE SEQUENCE REPEATS (ISSRS)

open access: yesKnowledge and Management of Aquatic Ecosystems, 2004
Conservation of the endangered noble crayfish (Astacus astacus) requires preservation of existing populations and reintroduction into suitable habitats, as currently underway in several regional projects in Germany and Poland.
SCHULZ H. K., ŠMIETANA P., SCHULZ R.
doaj   +1 more source

Вплив антропогенних чинників на формування біоти річки Уж [PDF]

open access: yes, 2014
Вивчення впливу антропогенних чинників на формування біоти річки Уж. Об’єктом дослідження слугувала р.Уж в межах сіл Рясне та Кам’янка Ємільчинського району. Дослідження проводили протягом 2010-2013 рр.
Астахова, Л. Є.
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EFFECTS OF EGG BATH AND DAILY REMOVAL OF DEAD EGGS ON HATCHING SUCCESS AND PRODUCTION OF STAGE 2 JUVENILES DURING ARTIFICIAL INCUBATION IN NOBLE CRAYFISH (ASTACUS ASTACUS L.)

open access: yesKnowledge and Management of Aquatic Ecosystems, 2006
The effects of egg bath (iodine-detergent preparation) and daily removal of dead eggs on hatching success and production of juveniles in stage 2 were investigated during a short (sixteen days) artificial incubation (AI) of noble crayfish eggs.
POLICAR T., KOZÁK P., MARTÍN J.
doaj   +1 more source

Microcystins in European Noble Crayfish Astacus astacus in Lake Steinsfjorden, a Planktothrix-Dominated Lake. [PDF]

open access: yesToxins (Basel), 2020
Samdal IA   +7 more
europepmc   +1 more source

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

open access: yesВісник Харківського Національного Університету Імені В.Н. Каразіна: Серія Біологія
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.
M. Shrestkha, S. Utevsky
doaj   +1 more source

High-throughput discrimination of bacteria isolated from Astacus astacus and A. leptodactylus

open access: yesKnowledge and Management of Aquatic Ecosystems, 2014
Bacterial diseases and pathogens of crayfish are common, widespread, and occasionally causing serious mortalities. In order to take rapid measures for correct treatment of crayfish diseases, the turnover time and accuracy in bacterial
Topić Popović N.   +8 more
doaj   +1 more source

Toxic and essential trace elements bio-accumulation in muscles and shells of crab, (Potamon persicum) in Kakareza River, Lorestan, Iran [PDF]

open access: yes, 2016
The present study was carried out to investigate accumulation of eleven toxic and essential trace elements in muscle and shell of Potamon persicum from Kakareza River in Lorestan Province (Iran) collected in summer and autumn, 2011.
Tabibzadeh, M., Velayatzadeh, M.
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Діагностичні ознаки і питання видового складу річкових раків Astacus (Fabricius, 1775) в межах України [PDF]

open access: yes, 2011
Проведене дослідження виконане трьома методами: алозимним аналізом, каріотипуванням і морфометрією. В доповоді наводяться головні діагностичні ознаки, а також обговорюється поширення цих видів в межах ...
Костюк, В. С.
core  

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