Results 11 to 20 of about 3,606 (158)

Correlation profile of the heavy metal distribution in the Pontastacus leptodactylus tissues [PDF]

open access: yesAnais da Academia Brasileira de Ciências, 2020
Arsenic (As), copper (Cu), nickel (Ni), zinc (Zn), manganese (Mn), lead (Pb), iron (Fe), aluminum (Al), cadmium (Cd) and chromium (Cr) accumulations were evaluated in the gills, hepatopancreas, exoskeleton, and muscles of Pontastacus leptodactylus ...
ŞEYDA FIKIRDEŞICI-ERGEN
doaj   +6 more sources

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

open access: yesActa 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   +7 more
doaj   +6 more sources

The effect of Dimethoate on oxidative stress and antioxidant responses of Pontastacus leptodactylus [PDF]

open access: yesRevista Científica
Dimethoate (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   +3 more sources

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

open access: yesAquatic 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   +2 more
doaj   +7 more sources

Elevated water temperature impairs gamete production in male narrow-clawed crayfish Pontastacus leptodactylus (Eschscholtz, 1823)

open access: yesKnowledge 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   +3 more sources

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

open access: yesJournal 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
exaly   +5 more sources

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

open access: yesJournal 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
exaly   +5 more sources

Karyotypes and Morphological Variability of Crayfish Pontastacus Leptodactylus and P. Angulosus (Malacostraca, Decapoda) [PDF]

open access: yesVestnik Zoologii, 2013
The existence on the territory of Ukraine of two sympatric widespread species definitely different by their chromosome number was proved based on the meiotic chromosome preparations. Besides the nominal species Pontastacus leptodactylus (Dana, 1852) with modal haploid chromosome number n = 93 we prove the existence of P. angulosus (Rathke, 1837) with n
Kostyuk, V.S.   +2 more
core   +5 more sources

An investigation on the population parameters of freshwater crayfish (Pontastacus leptodactylus Eschscholtz, 1823) in Lake Yeniçağa (Bolu)

open access: yesFisheries & Aquatic Life
This study examines the monthly population parameters of Pontastacus leptodactylus in Lake Yeniçağa, including sex, length, and weight compositions, length-weight relationship, fecundity, morphometry, meat yield, and crayfish plague ratio.
Gençay İrem   +2 more
doaj   +4 more sources

Blue Color Anomaly in Turkish Crayfish Pontastacus leptodactylus (Eschscholtz, 1823) (Crustacea, Decapoda, Astacidae) From Atikhisar Reservoir in Çanakkale, Turkey

open access: yesActa Natura et Scientia, 2021
Two individuals of Pontastacus leptodactylus (Eschscholtz, 1823) were collected from Atikhisar Reservoir in Çanakkale, Turkey. The individuals were caught by using a fyke-net.
Semih Kale   +6 more
doaj   +2 more sources

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