Results 41 to 50 of about 865 (176)

Genetic diversity of noble crayfish in Finland based on ITS1 microsatellite-like repeat variation: implications to the conservation and management

Knowledge and Management of Aquatic Ecosystems
During the last two centuries, native noble crayfish (Astacus astacus) has been introduced and re-introduced into many waters in Finland, to widen the area of distribution, and to re-establish the collapsed populations.
Karjalainen Anna, Halmekytö Maria, Mononen Jaakko, Kortet Raine, Kokko Harri   +4 more
doaj   +1 more source

Effects of Dietary Calcium and Magnesium Levels on the Growth Performance, Tissue Mineral Deposition, Exoskeleton Development, and Molting Performance of Chinese Mitten Crab (Eriocheir sinensis)

Aquaculture Nutrition, Volume 2026, Issue 1, 2026.
Calcium and magnesium are essential mineral elements for animal growth and development, playing crucial roles in skeletal formation, particularly in the molting process of crustaceans. However, their interaction is still poorly elucidated. This study investigated the effects of dietary calcium and magnesium levels on the growth performance, tissue ...
Han Chen, WenBin Liu, YueYun Guo, SiSi Xiong, ZiShang Liu, YanZou Dong, BeiLe Ye, Lei Xu, Pan Wang, XiangFei Li, Xianyong Bu   +10 more
wiley   +1 more source

CRAYFISH OCCURRENCE IN RELATION TO LAND-USE PROPERTIES: IMPLEMENTATION OF A GEOGRAPHIC INFORMATION SYSTEM (GIS)

Knowledge and Management of Aquatic Ecosystems, 2002
On the basis of inventory data collected since 1994, the recent stocking situation for freshwater crayfish in three 10 by 10 km study sites in northeastern Germany (Uckermark) and northwestern Poland (Szczecin area, Koszalin area) is described.
SCHULZ H. K., SMIETANA P., SCHULZ R.
doaj   +1 more source

Artificial Incubation and Juvenile Cultivation Strategies for Cherax quadricarinatus: Microbial Dynamics and Greenhouse Pond Optimization

Aquaculture Research, Volume 2026, Issue 1, 2026.
To address key issues in the breeding and aquaculture of Cherax quadricarinatus, two experiments were conducted based on existing research. The first experiment investigated the effects of four disinfection methods on the microbial community and diversity indices on the surface of isolated embryos, with three replicates per group. Previous studies were
Li Fei, Han Ying-li, Cheng Shun, Chi Mei-li, Liu Shi-li, Jiang Wen-ping, Zheng Jian-bo, Zhu Chao   +7 more
wiley   +1 more source

CRAYFISH MANAGEMENT FOR SWISS WATERS

Knowledge and Management of Aquatic Ecosystems, 2006
Seven species of crayfish are present in Swiss waters: three native ones (Astacus astacus, Austropotamobius pallipes, Austropotamobius torrentium) and four exotic ones (Astacus leptodactylus, Orconectes limosus, Pacifastacus leniusculus, Procambarus ...
HEFTI D., STUCKI P.
doaj   +1 more source

Effects of Prawn Shell Meal Diets on Hemocyte Count, Hemolymph Clotting, and Sperm Quality of the Freshwater Prawn Macrobrachium caementarius

Aquaculture Research, Volume 2026, Issue 1, 2026.
Crustacean shells are composed of chitin, which is bound to protein and minerals, along with other essential nutrients. These components are necessary for growth, immune response, the formation of reproductive structures, and the enhancement of sperm quality.
Walter Reyes-Avalos, Gladis Melgarejo-Velásquez, Carlos Azañero-Díaz, Carmen Yzásiga-Barrera, Sorayda Mendoza-Espinoza, Sonia Arroyo-Corales   +5 more
wiley   +1 more source

Recent changes in distribution pattern of freshwater crayfish in Croatia − threats and perspectives

Knowledge and Management of Aquatic Ecosystems, 2018
Analysis of Croatian freshwater crayfish populations, aiming to gather new distributional data and complement previous surveys (2005–2011), was performed during 2014–2016, within the frame of Natura 2000 Integration Project.
Maguire Ivana, Klobučar Göran, Žganec Krešimir, Jelić Mišel, Lucić Andreja, Hudina Sandra   +5 more
doaj   +1 more source

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, Børre Kind Dervo   +1 more
doaj   +1 more source

Dietary Pectin Supplementation as a Potential Strategy to Mitigate the Toxic Effects of Microplastics and Cadmium in Freshwater Crayfish (Astacus leptodactylus)

Aquaculture Research, Volume 2026, Issue 1, 2026.
This study investigated the effects of cadmium (Cd), microplastics (MPs), and pectin (Pec) supplementation on biochemical, oxidative, and immunological parameters in crayfish (Astacus leptodactylus). Four hundred fifty crayfish were acclimatized under controlled laboratory conditions and distributed into 15 experimental groups using a definitive ...
Mohammad Reza Kheirandish, Amin Gholamhosseini, Siyavash Soltanian, Seyed Shahram Shekarforoush, Mahdi Banaee, Hossein Madadi   +5 more
wiley   +1 more source

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

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