Results 51 to 60 of about 223 (147)
Reviews in Aquaculture, Volume 14, Issue 2, Page 848-889, March 2022., 2022 Abstract To maximise productivity, a better understanding of the underlying causes of subfertility that lead to inferior offspring and high mortality is imperative. In decapod crustaceans, most research has focused on female reproductive performance, with little attention given to male fertility.
Jon Irish Legaspi Aquino +3 more
wiley +1 more source
Reviews in Aquaculture, Volume 13, Issue 3, Page 1488-1530, June 2021., 2021 Abstract The redclaw crayfish (Cherax quadricarinatus; hereafter redclaw), native to northern Australia and southern New Guinea, is among the largest freshwater decapods. It matures early and is considered highly prolific as females may lay over one thousand eggs in a single clutch.
Phillip J. Haubrock +5 more
wiley +1 more source
Force and Boldness: Cumulative Assets of a Successful Crayfish Invader
Frontiers in Ecology and Evolution, 2021 Multiple causes can determine the disturbance of natural equilibrium in a population of a species, with a common one being the presence of invasive competitors.
Lucian Pârvulescu +10 more
doaj +1 more source
Aquaculture Reports, 2019 Understanding the annual dynamic of gametes in crayfish is useful for successful management of crayfish population. The annual variations in spermatozoa content of vas deferens, gonado-somatic index (GSI), hepatosomatic index (HSI), vas deferens index ...
Ardavan Farhadi +1 more
doaj +1 more source
Fecundity of the narrow-clawed crayfish Pontastacus leptodactylus in the water bodies of Belarus
Proceedings of the National Academy of Sciences of Belarus, Biological Series, 2023 Pre-larvae hatching fecundity and ovarian fecundity of narrow-clawed crayfish populations were estimated in the lakes and reservoirs of Belarus. Statistically significant differences in the fecundity of females from various water bodies were noted only for Lake Kichino.
openaire +1 more source
Knowledge and Management of Aquatic Ecosystems, 2006 The taxonomic classification of European crayfish is neither fully examined nor generally accepted as a unifying scheme. At present, one of the most obvious differences exists between astacologists from Western and Eastern Europe.
ŚMIETANA P. +3 more
doaj +1 more source
Vestnik 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
openaire +2 more sources
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 +7 more
doaj +1 more source
The food of Branchiobdella Odier, 1823 (Annelida) dwelling on crayfish and the occurrence of the fish parasite Argulus Müller, 1785 (Crustacea) on the carapace of Pontastacus leptodactylus (Esch.) [PDF]
Acta Ichthyologica et Piscatoria, 1999 Gut content of Branchiobdella spp. was examined in 83-945 individuals belonging to 4 species, collected from 31 individuals of Astacus astacus (L.) and 12 individuals of Pontastacus leptodactylus (Esch.) from north-western and southern Poland.
J. Wierzbicka, P. Śmietana
doaj +3 more sources
Aquaculture Research, Volume 51, Issue 8, Page 3205-3215, August 2020., 2020 Abstract New and viable species for aquaponics and integrated multi‐trophic aquaculture (IMTA) in freshwater systems can improve yields and sustainability of aquaculture. Freshwater crayfish species such as Astacus astacus and Pontastacus leptodactylus are omnivorous feeders and considered candidates for feeding on faecal matters in existing ...
Tanja Yvonne Roessler +3 more
wiley +1 more source