Results 141 to 150 of about 865 (176)

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

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
Lilian Pukk, Katrin Kaldre, Aluma Michael Oliewo   +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

Microcystins in European Noble Crayfish Astacus astacus in Lake Steinsfjorden, a Planktothrix-Dominated Lake

Toxins, 2020
Ingunn Anita Samdal, Christopher O Miles, Andreas Ballot   +2 more
exaly  

Partial Substitution of Fishmeal and Fish Oil in a Semi-Purified Diet for Noble Crayfish, Astacus astacus (Linnaeus, 1758)

Journal of Shellfish Research, 2022
George Papadomichelakis
exaly  

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

Differing virulence of Aphanomyces astaci isolates and elevated resistance of noble crayfish Astacus astacus against crayfish plague

Diseases of Aquatic Organisms, 2012
Anssi Vainikka, Raine Kortet
exaly  

Environmental DNA (eDNA) Monitoring of Noble Crayfish Astacus astacus in Lentic Environments Offers Reliable Presence-Absence Surveillance – But Fails to Predict Population Density

Frontiers in Environmental Science, 2020
David Allan Strand, Trude Vrålstad, Johannes Rusch   +2 more
exaly