Results 61 to 70 of about 4,221 (245)
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 +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 +1 more
doaj +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 +4 more
wiley +1 more source
Ecology Letters, Volume 28, Issue 1, January 2025.We test how reproductive interference from inter‐species mating between sympatric Caenorhabditis nematodes can influence species coexistence and exclusion. We demonstrate that females from the species with higher intrinsic population growth experience reduced lifespan and fecundity due to incomplete interspecies mate discrimination that leads to ...
Rebecca Schalkowski +3 more
wiley +1 more source
A Review on the Role of 2–8 Carbon Chain Carboxylates in Enhancing Aquaculture Performance
Reviews in Aquaculture, Volume 17, Issue 1, January 2025.Two to eight carbon chain carboxylates enhance aquaculture sustainability and productivity by improving growth performance, immune responses, environmental management, reducing antibiotic reliance, and promoting a circular economy. ABSTRACT Aquaculture is a key sector for global food security, but its sustainability and productivity remain constantly ...
Moussa Gouife +6 more
wiley +1 more source
Acta Biologica Slovenica, 2012 We tested the applicability of electron transport system (ETS) derived from a single leg as a tool for non-lethal assessment of metabolicactivity in freshwater crayfish.
Tatjana Simčič +3 more
doaj +1 more source
Aquaculture Nutrition, Volume 2025, Issue 1, 2025.Tryptophan, recognized as the third limiting amino acid, plays a crucial physiological function. The optimal tryptophan requirement for oriental river prawn (Macrobrachium nipponense) was assessed, and its impact on agonistic behavior was evaluated in this study. An 8‐week feeding trial was implemented with six different tryptophan levels: 0.07%, 0.17%,
Shiqian Cao +6 more
wiley +1 more source
Knowledge and Management of Aquatic Ecosystems, 2005 A Geographic Information System (GIS) and fuzzy modelling were used to develop a habitat suitability index for the noble crayfish, Astacus astacus. The model is based on crayfish distribution data for the federal state Hesse, Germany, which had been ...
ZUTHER S. +3 more
doaj +1 more source
PeerJ, 2019 Background Conservation of noble crayfish (Astacus astacus) populations is becoming particularly important since the number of individuals is rapidly declining across the distribution range of the species in Europe.
R. Panicz +5 more
semanticscholar +1 more source
Aquaculture Nutrition, Volume 2025, Issue 1, 2025.Reproductive maturation remains a central bottleneck in crustacean aquaculture, as ovarian development dictates broodstock quality, fecundity, and larval viability. This review synthesizes current knowledge on the physiological regulation of ovarian maturation in decapod crustaceans, emphasizing the interplay of hormones, nutrients, and environmental ...
Tariq Dildar +3 more
wiley +1 more source