Results 21 to 30 of about 1,459 (197)

Physiology of Ovarian Development in Crustaceans: Interactions Among Hormones, Nutrients, and Environmental Factors From Integrated Perspectives. [PDF]

open access: yesAquac Nutr
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 ...
Dildar T, Cui W, Ma H.
europepmc   +2 more sources

Fusarium oxysporum causes black gill disease in narrow-clawed crayfish Pontastacus leptodactylus

open access: yesDiseases of Aquatic Organisms, 2022
Morphological and molecular analyses were carried out to determine the causative agent of black gill disease in narrow-clawed crayfish Pontastacus leptodactylus specimens collected from 6 lakes (Taşkısığı, Beyşehir, Karaidemir, Karataş, Manyas, and Gölhisar) in Turkey.
Tastan, Yigit, Cagatay, Ifakat Tulay
openaire   +3 more sources

PCR detection of the crayfish plague pathogen in narrow-clawed crayfish inhabiting Lake Eğirdir in Turkey [PDF]

open access: yesDiseases of Aquatic Organisms, 2012
Many populations of the narrow-clawed crayfish Astacus leptodactylus in Turkey, including those inhabiting Lake Eğirdir, declined drastically in the mid-1980s due to introduction of crayfish plague Aphanomyces astaci. However, unlike many other localities, there has been some recovery in the A.
Kozubikova, E.   +8 more
openaire   +3 more sources

The expansion of freshwater crayfish range to the center of Eurasia

open access: yesNauplius, 2020
Freshwater crayfish were previously absent in the territory stretching from the Caspian Sea basin to the Amur basin. That gap is now being filled, mainly due to the eastward invasion of the narrow-clawed crayfish Astacus leptodactylus, which has ...
Igor Popov
doaj   +1 more source

Levels of accumulation of heavy metals and activity of radionuclides in narrow-clawed crayfish (Astacus leptodactylus Eschscholtz, 1823) of the Kamianske and Zaporizhzhia (Dnipro) reservoirs

open access: yesRibogospodarsʹka Nauka Ukraïni, 2023
Purpose. To determine the content of heavy metals as well as natural and artificial radionuclides in muscle tissue and carapaces of narrow-clawed crayfish Astacus leptodactylus of the Kamianske and Zaporizhzhia (Dnipro) reservoirs. Methodology.
P. Korzhenevska   +3 more
doaj   +1 more source

Determination of the hygienic quality of Astacus leptodactylus captured from Haft Barm lakes, Fars Province (Iran) in terms of trace metals accumulated in the product [PDF]

open access: yesBihdāsht-i Mavādd-i Ghaz̠āyī, 2021
< p >Regards the economic potential in extensive rearing of Narrow-clawed crayfish (Astacus leptodactylus) in Haft Barm lakes, Fars Province (Iran), and considering the chain value and global marketing, we need to monitoring programs on hygienic quality ...
N. Shiry   +4 more
doaj   +1 more source

Pleopodal fecundity of narrow-clawed crayfish (Pontastacus leptodactylus Eschscholtz, 1823)

open access: yesInvertebrate Reproduction & Development, 2020
The pleopodal fecundity of Pontastacus leptodactylus from Hirfanli Dam (Turkey) was investigated.
Kadir Çapkın   +2 more
openaire   +3 more sources

Analysis of linear-weight parameters of narrow-clawed crayfish (Astacus) in water reservoirs of Dnipropetrovsk region

open access: yesБіологія тварин, 2023
This research focuses on studying the narrow-clawed crayfish in the Dnipropetrovsk region. The narrow-clawed crayfish, Astacus leptodactylus, is a crucial component of industrial fisheries and plays a significant role in the development of aquatic ...
I. I. Borovyk, O. M. Marenkov
doaj   +1 more source

The features of narrow-clawed crayfish (Pontastacus leptodactylus Eschscholtz, 1823) population development in Lake Sevan during 1996–2018

open access: yesТрансформация экосистем, 2019
The narrow-clawed crayfish, an invasive hydrobiont of Lake Sevan appeared in the lake due to accidental introduction having occupied almost the entire territory of Lake Sevan, finding favorable conditions for its existence.
Evelina Kh. Ghukasyan   +3 more
doaj   +1 more source

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

Home - About - Disclaimer - Privacy