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... Toxic nitrogen compounds (ammonium and nitrite) during freshwater fish farming are factors that strongly affect fish farming and its effectiveness. Knowledge of the dynamics of these compounds during fish rearing is essential for fish farmers. Since measuring toxic nitrogen compounds is one of the most important actions in commercial fish culture, a two-part experiment was conducted using a Recirc ...
... This paper describes a study in which different types of the reproduction of wild vimba bream (Vimba vimba) under controlled conditions were compared. Reproduction was performed by using three methods: spontaneous (natural spawning- NS groups): without hormones but with nests, semi-artificial (S groups) with hormones and nests, and artificial (A groups) with hormones and manual stripping of gamete ...
... The changes in concentrations of 17ß-estradiol (E₂), testosterone (T), 11-ketotestosterone (11-KT) in the gonads and plasma of diploid and triploid gibel carp (Carassius gibelio) from the Siemianowka Reservoir, the Vistula River drainage were quantified and compared using an enzyme immunoassay. The phase of gonad maturity was based on histological analysis and the gonadosomatic index. All fish had ...
Moringa oleifera; antioxidant activity; antioxidants; aquaculture; aquaculture feeds; body composition; carotenoids; feed conversion; fish; fish meal; flavonoids; lectins; plant proteins; protein sources; trees
Abstract:
... The rapid expansion of the aquaculture industry, the global shortage of fish meal (FM) supplies from fisheries, and the continuous demand for FM as a primary protein source in aquafeed lead to increase the necessity to find new alternatives. Plant protein sources have gained significant importance among aquaculture farmers and nutritionists because of their availability, eco-friendly, sustainabili ...
... Nowadays, the application of immunomodulators in aquaculture has become of an urgent need because of high incidence of fish and shrimp diseases. For a long time, researchers have paid great interest to find suitable, relatively economical, and environmentally safe immunostimulant products to be used either as feed or water additives to boost immunity and increase the resistance of fish and shrimp ...
... The burbot (Lota L.) is one of the most promising freshwater new fish species for cold-water aquaculture. Due to the lack of availability of wild spawners, it is imperative to breed cultured spawners. In the present study, artificial reproduction of a cultured stock of burbot was carried out and then compared with wild fish reproduction results. Patterns of burbot final oocyte maturation were deve ...
... Fertilization is one of the most important procedures in artificial reproduction and it directly affects the reproduction outcome. When there is optimization of fertilization, there can be a positive effect on subsequent reproductive processes and economic aspects of aquaculture. This study was conducted to determine time for which oocytes and sperm of barbel Barbus barbus retain fertilization cap ...
JoannaNowosad, et al. ; Hany M.R. Abdel-Latif; Saeed El-Ashram; Sevdan Yilmaz; Mohammed A.E. Naiel; Zulhisyam Abdul Kari; Noor Khalidah Abdul Hamid; Mahmoud A.O. Dawood; Dariusz Kucharczyk; Show all 9 Authors
... Farmed fish and shrimp are continuously challenged by multiple stressors during their life stages, such as hypoxia, pH fluctuations, different salinities, high nitrite, un-ionized ammonia, injury during handling, inadequate nutrition, or food shortage, which can eventually adversely impact their health, welfare, and growth rates. Besides, these stressors can weaken production and decrease their re ...
Gymnocephalus cernua; carp; habitats; human chorionic gonadotropin; invasive species; oocytes; ovulation; sexual maturity; sperm motility; spermiation; Eurasia; North America
Abstract:
... Although ruffe (Gymnocephalus cernua) are widely distributed in Eurasia, in some regions (i.e., North America) ruffe are considered an invasive species. There have been no reports on artificial reproduction of this species. A study, therefore, was conducted to evaluate reproduction of ruffe with results of specimens captured from their natural habitat and cultured (F₁ generation) specimens being c ...
... The maraena whitefish, Coregonus maraena (Bloch, 1779), is often considered a suitable candidate for intensive aquaculture diversification in the EU. However, only a few such farms in Europe are in operation. Rearing this species in recirculating aquaculture systems is a recent innovation, and optimisation is necessary to standardise aspects of larviculture. This 30-day study investigated the effe ...
Artemia; Coregonus; artificial diets; body weight; condition factor; fish culture; intestines; live feeds; liver; survival rate
Abstract:
... Optimizing larval rearing protocols is critical to successful intensive fish culture. We compared the efficacy of feeding strategies for larvae of maraena whitefish Coregonus maraena, a promising candidate for intensive aquaculture. Survival, growth indicators, intestine development, and liver status were compared in larvae fed live feed, commercial dried feed, and weaned from live to dried feed a ...
Sander lucioperca; females; freshwater aquaculture; oocytes; survival rate; wild fish
Abstract:
... Pikeperch is one of the major new fish species in freshwater aquaculture. Artificial reproduction is difficult in this species, and many aspects require further study. These include synchronization of female maturation, latency time, gamete quality and spawner survival rate. For these reasons, many fish farmers must constantly replenish their spawning pikeperch stock, often with wild fish. Data on ...
... As a result of evolution, various finfish species have developed different breeding strategies. However, there are some similarities, and one of them is the positive effect of ovarian fluid on spermatozoa. The opposite of this phenomenon was found in the common barbel (Barbus barbus). The present study analyzed the effect of ovarian fluid (OF), distilled water (DW) and Woynarovich solution (WS) on ...
... This study determined the contents of cadmium (Cd) in the muscles, ovaries, and eggs of silver female European eels. The analysis of cadmium content was performed on female European eels caught during commercial fishing in freshwater in Warmia and Mazury (Poland), and then subjected to artificial maturation and ovulation processing under controlled conditions. The content of cadmium (Cd) in the ti ...
... Optimization of artificial reproduction is essential for minimizing genetic diversity, especially when fish are captured from their natural habitats and spawned in controlled conditions. In the present study, there was evaluation of the effects of gonadotropin-releasing hormone analogue (GnRHa) and human chorionic gonadotropin (hCG) with or without dopamine receptor antagonists such as domperidone ...
JoannaNowosad, et al. ; Dariusz Kucharczyk; Elżbieta Wyszomirska; Beata Irena Cejko; Martyna Arciuch-Rutkowska; Dorota Juchno; Alicja Boroń; Show all 7 Authors
... Optimization of artificial reproduction, by increasing the survival rate of embryos and hatching rate, is of major importance for reducing genetic diversity, especially in fish captured from their natural habitat that subsequently spawn in hatcheries. The artificial reproduction of ide, Leuciscus idus (L.) was conducted in controlled conditions. The spawning agents included: different doses of hum ...
... In this study, there was the first attempt to sex immature European river lampreys Lampetra fluviatilis, classified as Agnatha using ultrasonography. This species starts a spawning migration from seas to rivers in the autumn and reproduction is initiated in the late spring. It is recommended to collect breeders soon after the beginning of the spawning migration, however, to date no method has been ...
JoannaNowosad, et al. ; Karol Korzekwa; Piotr Gomułka; Daria J. Kucharczyk; Katarzyna Targońska; Tomasz K. Czarkowski; Daniel Żarski; Laszlo Horváth; Tamas Müller; Roman Kujawa; Marek J. Łuczyński; Joanna Łuczyńska; Hany M.R. Abdel-Latif; Dariusz Kucharczyk; Show all 14 Authors
... Controlled indoor reproduction of European eel is commonly recognized as a prospective tool to prevent extinction of this fish species. There is a little information about diversity of bacterial microflora of European eel during long maturation under controlled but changing thermal and salinity conditions. Characteristics of the composition of the bacterial microflora inhabiting the body surface o ...
... This study compares the content of mercury in the muscles, liver, kidneys, gonads and gills of male and female individuals of sichel (Pelecus cultratus). Moreover, the trend of changes of mercury concentration before (March) and during (May) the spawning season was examined. Sichel brooders were caught in the Vistula Lagoon during commercial fishing. The mercury content in tissues was determined b ...
JoannaNowosad, et al. ; Dariusz Kucharczyk; Daria Joanna Kucharczyk; Krzysztof Kupren; Katarzyna Targońska; Elżbieta Wyszomirska; Roman Kujawa; Show all 7 Authors
... This study focused on the artificial reproduction of common dace Leuciscus leuciscus (L.) outside the reproductive season. The results indicate there is the possibility of initiating the reproducion in individuals of this before the natural spawning season. There could be induction of spermiation by altering the environmental conditions. For females, hormonal injections were necessary for inductio ...