Results 11 to 20 of about 225 (145)
Journal of Freshwater EcologyThis study aims to determine the fatty acid composition of Pontastacus leptodactylus Eschscholtz, 1823 crayfish living in Cernek Lake in Bafra Fish Lakes in four seasons. The study was carried out over a period of one year. The crayfish used in the study
Gülsen Uzun Goren
exaly +5 more sources
Effects of methyl farnesoate injection on spermatozoa number and reproductive indices in the narrow-clawed crayfish Pontastacus leptodactylus [PDF]
Nauplius, 2022 In this study, the effect of methyl farnesoate (MF) injection on haemolymph MF levels, spermatozoa production and the reproductive indices of gonadosomatic index (GSI), testicular index (TI) and vasosomatic index (VSI) were investigated in males of ...
Mehmet Bal, Ayşe Gül Harlıoğlu
doaj +4 more sources
The effect of Dimethoate on oxidative stress and antioxidant responses of Pontastacus leptodactylus
Revista CientíficaDimethoate (DMT) pesticide is one of the chemicals used to protect some agricultural areas from harmful organisms. DMT residues released directly or indirectly to the environment cause serious problems in nature.
Ayşe Nur Aydın +2 more
doaj +2 more sources
Aquaculture Nutrition, 2023 The effects of galactooligosaccharide (GOS) and varying levels of Lactobacillus plantarum (LP) on some physiological parameters as well as air exposure stress resistance in clawed crayfish (Pontastacus leptodactylus) were investigated.
Shiva Nedaei +4 more
doaj +2 more sources
Aquaculture Reports, 2019 The extrusion of spermatophores using electrical stimulation and dissection techniques from the vas deference was performed to test the feasibility of artificial insemination in Pontastacus leptodactylus.
Ardavan Farhadi +2 more
doaj +2 more sources
The amount of environmental DNA increases with freshwater crayfish density and over time
Environmental DNA, 2022 Over the last years, the analysis of environmental DNA (eDNA) has become an important approach to investigate species communities. Due to its non‐invasive nature and high sensitivity, this method is excellently suited to monitor the occurrence of ...
Daniela Sint +4 more
doaj +2 more sources
Farming of Indigenous Crayfish in Russia: A Mini-Review of Recent Studies [PDF]
AnimalsNatural populations of crayfish in Europe have experienced significant declines due to the spread of crayfish plague, overfishing, competition with invasive crayfish species, and habitat degradation.
Alexander G. Dvoretsky +1 more
doaj +2 more sources
Knowledge and Management of Aquatic Ecosystems, 2018 Water temperature is one of the major environmental factors affecting the reproductive output of freshwater crayfish. The reproduction of freshwater crayfish only occurs in a limited water temperature range and minor changes in water temperature could ...
Farhadi Ardavan +1 more
doaj +2 more sources
A sample model for applying feature selection and machine learning techniques to estimate and manage crayfish populations [PDF]
Scientific ReportsSustainable fishing and aquaculture production require not only data collection but also its proper application. Another factor influencing the study’s direction is dataset size. Regardless of dataset size, the most critical aspect of data use is feature
Yasemin Gültepe, Nejdet Gültepe
doaj +2 more sources
Aquaculture ReportsThe spread of invasive crayfish species poses a serious threat to the freshwater ecosystems. However, it is also a chance to enrich the resources for crayfish genetic resource.
Huiyi Cai +6 more
doaj +2 more sources