Results 11 to 20 of about 206 (149)

Dietary Effects of Lactobacillus plantarum Combined with Galactooligosaccharide on Immunological and Biochemical Parameters, Gut Microbiota, Digestive Enzyme Activity, Body Composition, and Stress Resistance in Narrow-Clawed Crayfish, Pontastacus leptodactylus (Eschscholtz, 1823)

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, Ahmad Noori, Alireza Valipour, Ali Asghar Khanipour, Seyed Hossein Hoseinifar   +4 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, Bernhard Kolp, Oskar Rennstam Rubbmark, Leopold Füreder, Michael Traugott   +4 more
doaj   +2 more sources

First Report of Albinism in Turkish Crayfish Pontastacus leptodactylus (Eschscholtz, 1823) (Crustacea, Decapoda, Astacidae)

Acta Natura et Scientia, 2020
A female albino crayfish Pontastacus leptodactylus (Eschscholtz, 1823) was captured from Atikhisar Reservoir in Çanakkale, Turkey on July 18, 2020. The albino crayfish is lacked melanin that is normally found on normal crayfish.
Semih Kale, Selçuk Berber, Deniz Acarlı, Tekin Demirkıran, Pervin Vural, Sefa Acarlı, Bayram Kızılkaya, Evren Tan   +7 more
doaj   +3 more sources

Farming of Indigenous Crayfish in Russia: A Mini-Review of Recent Studies [PDF]

Animals
Natural 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, Vladimir G. Dvoretsky   +1 more
doaj   +2 more sources

New codend designs to improve the size selectivity of fyke net for narrow-clawed crayfish (Pontastacus leptodactylus)

Aquatic Living Resources, 2022
The narrow-clawed crayfish (Pontastacus leptodactylus) is one of the most ecologically and economically important freshwater species in Turkey. However, the harvest of this species has declined from 7937 t in 1984 to 696 t in 2019. One of primary reasons
Cilbiz Mehmet, Aydın Celalettin, Herrmann Bent   +2 more
doaj   +6 more sources

Seasonal variation of gender-specific meat yield of freshwater Crayfish (Pontastacus leptodactylus Eschscholtz, 1823)

Journal of Applied Animal Research
The focus of this study was the seasonal and sex-specific variation in meat yield of narrow-clawed crayfish (Pontastacus leptodactylus Eschscholtz, 1823), an important crustacean species for aquaculture and the local market. This popular consumer product
Gülşen Uzun Gören
doaj   +2 more sources

Modeling and predicting meat yield and growth performance using morphological features of narrow-clawed crayfish with machine learning techniques [PDF]

Scientific Reports
In recent studies, artificial intelligence and machine learning methods give higher accuracy than other prediction methods in large data sets with complex structures.
Yasemin Gültepe, Selçuk Berber, Nejdet Gültepe   +2 more
doaj   +2 more sources

Seasonal variation of fatty acid compositions in freshwater crayfish (Pontastacus leptodactylus Eschscholtz, 1823)

Journal of Freshwater Ecology
This 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
Gülşen Uzun Gören
doaj   +3 more sources

Cheliped loss and abnormalities of the narrow-clawed crayfish, Pontastacus leptodactylus (Eschscholtz, 1823) (Crustacea: Decapoda: Astacidae) [PDF]

Nauplius
Heterochely is an important phenomenon in decapod crustaceans. Nevertheless, it was rarely examined in freshwater crayfish. Therefore, the aim of this study was to investigate cheliped loss and abnormalities of the narrow-clawed crayfish, Pontastacus ...
Selçuk Berber, Semih Kale, Deniz Acarlı   +2 more
doaj   +4 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   +1 more source