Results 71 to 80 of about 225 (145)

The features of narrow-clawed crayfish (Pontastacus leptodactylus Eschscholtz, 1823) population development in Lake Sevan during 1996–2018

Трансформация экосистем, 2019
The narrow-clawed crayfish, an invasive hydrobiont of Lake Sevan appeared in the lake due to accidental introduction having occupied almost the entire territory of Lake Sevan, finding favorable conditions for its existence.
Evelina Kh. Ghukasyan, Hranush F. Melkonyan, Lilit G. Stepanyan, Norik S. Badalyan   +3 more
doaj   +1 more source

Rapid assessment of population dynamics and monitoring methods for invasive narrow clawed crayfish Pontastacus leptodactylus in a freshwater reservoir

Knowledge and Management of Aquatic Ecosystems
Narrow-clawed crayfish (Pontastacus leptodactylus) are a data deficient invasive non-native species in the UK. Boshaw Whams (West Yorkshire, UK) contains the only known population of narrow-clawed crayfish in Yorkshire.
Harwood Matthew, Stebbing Paul D., Dunn Alison M., Cole Zoe K., Bradbeer Stephanie J., Aston Ben, South Josie   +6 more
doaj   +1 more source

Non-consumptive effects of native, alien and invasive alien crayfish on damselfly egg life history and carry-over effects on larval physiology [PDF]

NeoBiota
Invasive alien (IA) predators pose significant threats to native ecosystems, often leading to profound impacts on prey species through both direct and non-consumptive effects (NCE). This study focused on the NCE of predator-induced stress from one native
Szymon Sniegula, Dorota Konczarek, Maciej Bonk, Andrzej Antoł, Nermeen R. Amer, Robby Stoks   +5 more
doaj   +3 more sources

Physiological and Intestinal Microbiota Responses to the Feeding Stimulant Dimethyl-β-Propiothetin (DMPT) in Aquatic Animals—A Preliminary Study on Pontastacus leptodactylus Fed on a Plant-Based Diet

Antioxidants
The replacement of fishmeal with plant protein is a key strategy for sustainable aquaculture, but reduced feed intake and digestive efficiency remain major constraints.
Ying Yan, Ming Li, Yanjie Tang, Xiting Chen, Haibo Jiang, Muzi Zhang, Na Li, Bin Li   +7 more
doaj   +1 more source

Standardization of pleopodal egg number in narrow-clawed crayfish ( Pontastacus leptodactylus Eschscholtz, 1823)

Invertebrate Reproduction & Development
In this study, the effects of certain biotic factors (length, presence of lesions) and abiotic factors (month of fishing and fishing area) on pleopodal egg production of Pontastacus leptodactylus (Eschscholtz, 1823) were examined to determine the optimal productivity of spawned female crayfish for aquaculture purposes.
Yıldız Bolat, Mehmet Cilbiz, Bayram Korkmaz   +2 more
openaire   +1 more source

First detection of Aphanomyces astaci and its potential responsibility for mass mortalities of Pontastacus (Astacus) leptodactylus in Greek lakes

Journal of Biological Research - Thessaloniki
Aphanomyces astaci is a pathogen categorized among the 100 worst invasive alien species, responsible for the crayfish plague disease. In the past, many disease outbreaks devastated native European crayfish populations.
Maria V Alvanou, Athanasios Lattos, Maria Th Cheimonopoulou, Basile Michaelidis, Apostolos P Apostolidis, Ioannis A Giantsis   +5 more
doaj   +1 more source

Probiotics, Prebiotics, and Synbiotics Utilization in Crayfish Aquaculture and Factors Affecting Gut Microbiota. [PDF]

Microorganisms, 2023
Alvanou MV, Feidantsis K, Staikou A, Apostolidis AP, Michaelidis B, Giantsis IA.   +5 more
europepmc   +1 more source

Effects of methyl farnesoate injection on fatty acids and amino acids in the hepatopancreas of male narrow-clawed crayfish, Pontastacus leptodactylus

Nauplius
To investigate the effects of methyl farnesoate hormone (MF) on the hepatosomatic index, protein, amino acid (AA) and fatty acid (FA) composition of hepatopancreas in male P.
Mehmet Bal, Ayşe Gül Harlıoğlu
doaj   +1 more source

Annotation full-length transcriptome of the narrow-clawed crayfish,Pontastacus leptodactylus(Eschscholtz,1832)

Annotation full-length transcriptome  of the narrow-clawed crayfish,Pontastacus leptodactylus(Eschscholtz,1832)
Chen, Yibin, Hou, Yashi, Jia, Shaoting, Gong, Kezhi, Ren, Xianyun, Xu, Wenteng, Ma, Wentao, Lv, Jianjian   +7 more
openaire   +1 more source

ЕФЕКТИВНІСТЬ КОНТЕЙНЕРНИХ СИСТЕМ З АЕРАЦІЄЮ ДЛЯ ВИРОЩУВАННЯ ВУЗЬКОПАЛОГО РАКА (PONTASTACUS LEPTODACTYLUS)

Bulletin of Sumy National Agrarian University. The series: Livestock
У статті розглядається ефективність вирощування вузькопалого прісноводного рака (Pontastacus leptodactylus) у контейнерній системі з аерацією. Метою дослідження було визначення оптимальних параметрів годівлі та оцінка впливу фізико-хімічних характеристик водного середовища на продуктивність та фізіологічний стан раків у віці від 9 до 12 місяців ...
openaire   +1 more source