Results 41 to 50 of about 272 (158)

Populations of long-clawed crayfish Pontastacus leptodactylus: Effect of commercial fishing on the size and age structure

open access: yesVestnik MGTU, 2023
Fishing affects the population of crayfish, while it changes the size and age characteristics. The size and age parameters of two populations of the narrow-clawed crayfish Pontastacus leptodactylus in the Loktyshi (Brest Region) and Krasnoslobodskoe ...
Alekhnovich A. V.
doaj   +1 more source

Update on the distribution of freshwater crayfish in Croatia

open access: yesKnowledge and Management of Aquatic Ecosystems, 2011
Four indigenous European and two non-indigenous American freshwater crayfish species inhabit Croatian freshwater habitats. Generally, the noble crayfish (Astacus astacus), the narrow-clawed crayfish (Astacus leptodactylus) and the stone crayfish ...
Maguire I., Jelić M., Klobučar G.
doaj   +1 more source

Population molecular analysis among the narrow-clawed crayfish (Astacus leptodactylus) based on microsatellite DNA loci [PDF]

open access: yesIranian Journal of Animal Biosystematics, 2018
The genetic variation of narrow-clawed crayfish (Astacus leptodactylus, Eschscholtz, 1823) from Caspian Sea including two sites (Astara and Kiashahr), Aras region, Anzali lagoon and three rivers (Chafrood, Masuleh, and Siah Darvishan) was evaluated and ...
Majidreza Khoshkholgh, Sajad Nazari
doaj   +1 more source

A COMPARISON OF SURVIVAL AND GROWTH IN JUVENILE ASTACUS LEPTODACTYLUS (ESCH.) AND PACIFASTACUS LENIUSCULUS (DANA) UNDER CONTROLLED CONDITIONS

open access: yesKnowledge and Management of Aquatic Ecosystems, 2006
The aim of this study was to compare survival and growth of juvenile narrow-clawed crayfish (Astacus leptodactylus) and signal crayfish (Pacifastacus leniusculus) fed only with experimental pellets (45% of proteins, 6% of fat, 20% crude fibre) under ...
ULIKOWSKI D., KRZYWOSZ T., ŚMIETANA P.
doaj   +1 more source

STATUS OF FRESHWATER CRAYFISH IN LATVIA

open access: yesKnowledge and Management of Aquatic Ecosystems, 2005
There are three crayfish species present in Latvia: the European noble crayfish (Astacus astacus), the narrow-clawed crayfish (Astacus leptodactylus), and the North-American signal crayfish (Pacifastacus leniusculus) species. Probably only noble crayfish
ARENS A., TAUGBØL T.
doaj   +1 more source

Impact of Stocking Density on the Survival, Growth and Injury of Narrow Narrow-Clawed Crayfish ( Pontastacus leptodactylus ) Reared in a Flowing Brackish Water System

open access: yesActa Natura et Scientia, 2022
The crayfish population dramatically declined in most lakes and dams in Türkiye; hence, crayfish culture is a possible option to increase the supply. This study aimed to determine the effects of stocking density on the growth performance and survival ...
Yavuz Mazlum, Cumhur Uzun
doaj   +1 more source

Effect of Different Baits on Catch Per Unit Effort (CPUE) for Catching Narrow-Clawed Crayfish (Pontastacus leptodactylus) with Fyke-Nets and Traps in Çanakkale Atikhisar Reservoir

open access: yesÇanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries, 2022
This study was aimed to determine the effects of different bait types on the efficiency of fyke-nets and traps in catching narrow-clawed crayfish (Pontastacus leptodactylus (Eschscholtz, 1823)). The study was carried out in Atikhisar reservoir, Çanakkale,
Tekin DEMİRKIRAN, Uğur ÖZEKİNCİ
doaj   +1 more source

Comparative characteristics of physicochemical parameters of meat and biochemical composition of hemolymph in three species of crayfishes

open access: yesБіологічні студії
Background. Crayfish farming is a promising direction in the development of aquaculture. Compared with marine crustacean species, freshwater crayfish require lower cultivation costs, while their meat is regarded as an additive dietary delicacy with a ...
Mykola Slusar   +6 more
doaj   +1 more source

The amount of environmental DNA increases with freshwater crayfish density and over time

open access: yesEnvironmental 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   +1 more source

EFFECTS OF SOYBEAN MEAL BASED DIET ON GROWTH PERFORMANCE AND HEMOLYMPH BIOCHEMICAL PARAMETERS OF NARROW-CLAWED CRAYFISH (ASTACUS LEPTODACYLUS ESCHSCHOLTZ, 1823) [PDF]

open access: yesCroatian Journal of Fisheries, 2013
Like other crustaceans, narrow-clawed crayfish (Astacus leptodacylus Eschscholtz, 1823) can change its diet to the available food during varied life cycles.
Mahdi Banaee   +3 more
doaj  

Home - About - Disclaimer - Privacy