Results 171 to 180 of about 2,322 (209)

Morphological diversity of Astacus astacus revealed by geometric morphometrics

2019
Astacus astacus is one of four native crayfish species inhabiting Croatian freshwaters. It is known that they play a key role in the ecosystems functioning, that their populations are declining and that they are vulnerable. In order to develop adequate conservation programs for their preservation, sound knowledge of their biology and ecology is ...
Maguire, Ivana, Lovrenčić, Leona
openaire   +2 more sources

Edelkrebs Astacus astacus (Linné 1785) in Nordrhein-Westfalen

Decheniana : Verhandlungen des Naturhistorischen Vereins der Rheinlande und Westfalens, 1976
Die Arbeit ist eine Initiativuntersuchung zur Bestandsaufnahme von Astacus astacus (L.) in Nordrhein-Westfalen. Zu Beginn werden Untersuchungsergebnisse einiger benachbarter Länder wiedergegeben. Dann werden die Untersuchungsgebiete in NRW genannt und die Ergebnisse der Ermittlungen zum Vorkommen der Art mitgeteilt.
openaire   +1 more source

Morphological characteristics of noble crayfish (Astacus astacus) in Croatia

2004
Noble crayfish (Astacus astacus (Linnaeus, 1758)) is one of four native European crayfish species inhabiting Croatian freshwater habitats and it is protected by the Croatian law. It is naturally distributed in the continental part of Croatia in the Drava-Danube and Sava River basins, forming both river and lake populations and it also occurs in the ...
Maguire, Ivana, Hudina, Sandra, Faller, Matej, Lucić, Andreja   +3 more
openaire   +2 more sources

Temperature acclimation of walking in the crayfish Astacus astacus L.

Comparative Biochemistry and Physiology Part A: Physiology, 1983
Abstract 1. 1. Crayfish (Astacus astacus L.) were acclimated for 3–12 days at 5°C and 20°C. The effect of temperature on the rate of spontaneous walking in intact animals was measured. 2. 2. The spontaneous walking showed a bimodal rate-temperature curve with peaks at 0.5° and 20°C in the cold-acciimated and at 5° and 26°C in the warm ...
openaire   +1 more source

Mogućnosti uzgoja potočnog raka (Astacus astacus)

2004
Predavanje na temu očuvanja autohtone vrste riječnog raka, koji sve brže nestaje iz naših vodotoka zbog porasta zagađenja, pojave bolesti (račja kuga) i neprirodne kompeticije s alohtonim vrstama. Najučinkovitija metoda zaštite je uzgoj u kontroliranim uvjetima te repopulacija uzgojenih jedinki u prirodna staništa.
openaire   +1 more source

Metabolism in the Crayfish Astacus Astacus (L.): II. – The Energy-Yielding Metabolism

Archives Internationales de Physiologie et de Biochimie, 1966
AbstractThe energy-yielding metabolism in Aslaciw astacus was studied. The connection between the oxidative metabolism and the carbohydrate, lipid and protein metabolism lias been investigated. It appeared that both acetate and glucose can be oxidized.
openaire   +2 more sources

Distribution of Non-Indigenous Crayfish Species in Estonia and Their Impacts on Noble Crayfish (Astacus astacus L.) Populations

Diversity, 2023
Michael Oliewo Aluma, Lilian Pukk, Katrin Kaldre   +2 more
exaly  

?????????????????????? ???????????? ???????????????????????? ???????? (Astacus leptodactylus) ?? ???????????? ?? ???????????? ?? ???????????????????????? ?? ?????????? ???? ???????????????????? ???????????????? ?????????? ??????????????????????????????????????

2014
Experimental research has been carried out during the process of breeding narrow-clawed crayfish larva in ponds and cages with electric power plant waste water during the first vegetation period. In ponds the young of the year reach 4,4???4,6 cm in length and 2,69???3,34 g in mass.
openaire   +1 more source

Astacus leptodactylus.

2010
Astacus leptodactylus is partially protected in Uzbekistan where it is listed in the The Red Data Book of Uzbekistan but under the name Pontastacus kessleri. It is also listed in the Red Data Book for Moscow. Harvesting of this species in Turkey during the spawning season is prohibited.
GHERARDI, FRANCESCA, C. SOUTY GROSSET
openaire   +1 more source

?????????????????? ??????????????????, ???????????????? ???????????????? ???????????????????? ?? ???????????????????????? ???????????????????????? ???????? Astacus leptodactylus ???????????????? ???????????????? ?? ??????????????

2016
?????????????????????? ???????????????????????????? ?????????????????? ???????????????????????? ???????? ???????????????? ???????????????? ?? ??????????????. ??????????????????????, ?????? ????????, ???????????? ???????????????? ???????????????????? ?? ?????????????? ?????????????? ?????????? ?????? 50%-?????? ?????????????? ???????????????????? ?? ????
openaire   +1 more source