Results 51 to 60 of about 205 (144)

Study of prophenoloxidase activating system of freshwater crayfish (Pontastacus leptodactylus)

, 2006
Phenoloxidase (Po) activity was measusred spectrophotometrically in serum, plasma and haemocytes (HLS) of the freshwater crayfish (Pontastacus leptodactylus). The highest activity was found in HLS suggesting that the haemocytes are the major source of the Po or its proform prophenoloxidase (proPO) in crayfish.
Khazraee Nia, S., Soltani, M., Sepehri, H., Yahyazaeh, M.Y.   +3 more
openaire   +3 more sources

Populations of long-clawed crayfish Pontastacus leptodactylus: Effect of commercial fishing on the size and age structure

Vestnik MGTU, 2023
Fishing affects the population of crayfish, while it changes the size and age characteristics. The size and age parameters of two populations of the narrow-clawed crayfish Pontastacus leptodactylus in the Loktyshi (Brest Region) and Krasnoslobodskoe ...
Alekhnovich A. V.
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

First record of Astathelohania contejeani (Henneguy, 1892) in the narrow-clawed crayfish Pontastacus leptodactylus (Eschscholtz, 1823) from Belarus

Oceanological and Hydrobiological Studies
Porcelain disease, caused by the parasite Astathelohania contejeani, is a fatal disease for freshwater crayfish. Previously published data provide information on the occurrence of A. contejeani in various crayfish species. However, its prevalence in host
Śliwińska Karolina, Skuratovich Elena, Alekhnovich Anatoly   +2 more
doaj   +1 more source

Effect of Different Baits on Catch Per Unit Effort (CPUE) for Catching Narrow-Clawed Crayfish (Pontastacus leptodactylus) with Fyke-Nets and Traps in Çanakkale Atikhisar Reservoir

Çanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries, 2022
This study was aimed to determine the effects of different bait types on the efficiency of fyke-nets and traps in catching narrow-clawed crayfish (Pontastacus leptodactylus (Eschscholtz, 1823)). The study was carried out in Atikhisar reservoir, Çanakkale,
Tekin DEMİRKIRAN, Uğur ÖZEKİNCİ
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

eDNA‐Based Detection of Invasive Crayfish and Crayfish Plague in Estonia

Environmental DNA, Volume 7, Issue 3, May–June 2025.
Our study explored the potential of integrating the eDNA approach into ongoing annual monitoring programs for invasive crayfish species and A. astaci. Crayfish eDNA was detected in 9 out of 14 water bodies where presence was confirmed by trapping, yielding 64% detection efficiency. eDNA from A.
Michael Oliewo Aluma, Katrin Kaldre, David A. Strand, Margo Hurt, Lilian Pukk   +4 more
wiley   +1 more source

Real-Time PCR Assays for Rapid Identification of Common Aphanomyces astaci Genotypes

Frontiers in Ecology and Evolution, 2021
The oomycete Aphanomyces astaci is the etiologic agent of crayfish plague, a disease that has seriously impacted the populations of European native crayfish species.
Marco Di Domenico, Valentina Curini, Riccardo Caprioli, Riccardo Caprioli, Carla Giansante, Agata Mrugała, Agata Mrugała, Agata Mrugała, Agata Mrugała, Michaela Mojžišová, Cesare Cammà, Adam Petrusek   +11 more
doaj   +1 more source

Exploring the Coexposure Effects of Pyrogallol and Microplastic on the Red Swamp Crayfish Procambarus clarkii

Aquaculture Research, Volume 2025, Issue 1, 2025.
Investigating the impact of two or more toxic chemicals on aquatic organisms is one of the main objectives of toxicological research. Microplastics (MPs) are identified as a carrier or vector for other pollutants. Therefore, the current study investigated the effects of both pyrogallol (PG) and MPs, individually and in combination, on freshwater ...
Rashad E. M. Said, Mohamed Hamed, Walaa M. Shaalan, Heba Allah M. Elbaghdady, Alaa El-Din H. Sayed   +4 more
wiley   +1 more source

Study on the Artificial Incubation of Procambarus clarkii Embryos

Aquaculture Research, Volume 2025, Issue 1, 2025.
The Procambarus clarkii industry currently faces four major challenges: genetic degradation, disease, unstable prices, and limited breeding methods and modes. Studies on the artificial incubation of P. clarkii embryos can help solve these problems. The purpose of this study was to screen for parameters (disinfectants, embryo stripping stage, embryo ...
Shun Cheng, Pei-xin Zhang, Mei-li Chi, Shi-li Liu, Wen-ping Jiang, Jian-bo Zheng, Jian-mei Xin, Chao Zhu, Fei Li   +8 more
wiley   +1 more source