A5066248373- Aquaculture Nutrition and Growth
- Fish Ecology and Management Studies
- Reproductive biology and impacts on aquatic species
- Aquaculture disease management and microbiota
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Sperm and Testicular Function
- Fish Biology and Ecology Studies
- Animal Genetics and Reproduction
- Reproductive Biology and Fertility
- Genetic diversity and population structure
- Pancreatic and Hepatic Oncology Research
- Crustacean biology and ecology
- Hungarian Social, Economic and Educational Studies
- Gastric Cancer Management and Outcomes
- Nanofabrication and Lithography Techniques
- Animal Nutrition and Physiology
- Marine and environmental studies
- Bariatric Surgery and Outcomes
- Marine animal studies overview
- Botany and Plant Ecology Studies
- Neurobiology and Insect Physiology Research
- Plant Reproductive Biology
Magyar Agrár- és Élettudományi Egyetem
2020-2025
Research Institute for Fisheries and Aquaculture
2017-2024
National Agricultural Research and Innovation Centre
2017-2020
A 9-week study was conducted to evaluate the potential of processed animal protein (PAP) in comparison with soybean meal (SM) replace fish (FM) practical diets for European catfish, Silurus glanis, on growth performance, liver transaminase activities and expression growth-related genes. Seven isonitrogenous (440 g kg-1 crude protein) isoenergetic (16.70 MJ/kg) were formulated by replacing 0 (control), 30%, 60% 100% FM either SM or PAP. Each diet randomly assigned triplicate groups 25 per...
Intensive common carp (Cyprinus carpio L.) pond production offers an alternative to traditionally practiced extensive and semi-intensive farming technologies. Global warming increases the scarcity of water available for aquaculture, requiring increased productivity per unit used water. The present trial was conducted on intensive rearing two-summer-old (0.5 ± 0.1) kg. Fractional factorial design (24–1, resolution IV) applied identify how performance is affected by following four factors...
Basic morphological and reproductive traits of diploid triploid pikeperch (Sander lucioperca), as well its hybrids with the Volga (S. volgensis), were investigated in closed larviculture for up to 350 days post-hatch. Biotechnological interventions enhance aquaculture production over time, proven benefits other species, improving growth, survival, feed efficiency, reducing intracohort cannibalism. This study evaluated four experimental groups: (PD), pikeperch-autotriploid (PT), hybrid...
Two species from the families Acipenseridae and Polyodontidae, Russian sturgeon (Acipenser gueldenstaedtii, Brandt Ratzeberg, 1833; functional tetraploid) American paddlefish (Polyodon spathula, Walbaum 1792, diploid) were hybridized. The hybridization was repeated using eggs three sperm four individuals. Survival in all hybrid family groups ranged 62% to 74% 30 days after hatching. This first successful between these two members of Polyodontidae. Flow cytometry chromosome analysis revealed...
Fish welfare is becoming a priority for the fish farming industry. The search practical, easy-to-implement methods to promote farmed therefore essential. Environmental enrichment aims improve psychological and physiological needs of captive animal by increasing complexity its environment. During previous studies, we observed that seemed be positively affected short diffusions air bubbles. In this study, evaluated effects an innovative strategy consisting introducing into tank at earliest...
Interspecific hybridizations among sturgeon species are feasible and often bidirectional. The American paddlefish ( Polyodon spathula ) from Family Polyodontidae Acipenseridae were reported capable of hybridization, but viable hybrids have been described only in crosses with the as paternal parents. In reciprocal cross, not however embryos start to develop reach late gastrula early neurula stages. goal this study was examine hybridization between sterlet Acipenser ruthenus paddlefish. Hybrid...
Seasonal reproduction of domesticated pikeperch has been the most critical spawning batch in several European countries. The present study aimed to monitor oocyte growth between mid-November and seasonal evaluate if trends may predict egg quality. Nineteen sexually mature females were monitored for sizes every two months. In mid-March, fish transported indoor facility artificially reproduced. Sixteen ovulated quality parameters assessed further related measured November, January, March, as...
The present study aimed to assess the effects of thermal manipulation on vitellogenesis and final oocyte maturation (FOM) in pikeperch. Two groups fish were stocked two separate tanks climate chamber. One group was at 10-month age (THERMAL), while other continually kept under stable photothermal conditions until 19-month-age (CONTROL) then transferred a progress assessed via evaluation diameter mid- late-autumn phases, gonadosomatic index (GSI) phase. Finally, females from CONTROL hormonally...
Traditional aquaculture farming conditions favour the development of maladaptive traits reared fish. The hatchery releases are a crucial part population recovery action in sturgeon species. manipulation environment could be one solutions to increase welfare and thus make fish more adaptable changing post-release environment. objective our study was compare zootechnical parameters behaviour young sterlets Acipenser ruthenus different culture conditions. Hatchery-like or bare (CRTL)...
Increasing the number of fish stocked might optimize efficiency intensive aquaculture systems however at same time have a negative impact on welfare and growth parameters. In current study, three different stocking densities were evaluated in duplicated tanks to investigate effect survival sterlet larvae from hatching until end weaning, during 30-day trial. Tested 5, 10, 20 L−1 low (L), medium (M), high (H) density group, respectively. Freshly hatched (1250, 2500, 5000 per tanks) divided...
Artificial reproduction of pikeperch (Sander lucioperca) is characterized by the unpredictability latency time (LT) as well variability egg quality depending on hormonal stimulation. To predict and thus enhance fertilization outcomes, present study evaluated whether in vitro maturation techniques could be utilized to assess status oocyte competence (OMC). Oocyte samples from nine pond-reared females originating Czech Republic (CZECH) 12 intensively cultured river Körös (HAKI) were...
Abstract The failure of initial swim bladder inflation (SBI) is one the main obstacles to successful results in Zander (also known as Pikeperch) Sander lucioperca larviculture because larvae are unable penetrate oil layer on water surface gulp air. There numerous technical solutions for cleaning surface, including using a sprayer emulsify contamination and skimmer trapping globules surface. To investigate most appropriate method improving SBI success rate, three different devices were...
This study aimed to find the optimal strategy for application of salmon gonadotropin-releasing hormone analogue (sGnRHa) in outdoor-cultured pikeperch males an exceptionally early term November. According histological examination, on day hormonal treatment, testes were late stadium spermatogenesis, with 78.7% germ cells attributed sperm cells. Five experimental groups established varying preparations and water temperature: (1) sGnRHa (25 μg kg−1) was applied fish at pre-warming temperature...
We studied the effect of different magnitudes (7000 PSI (48.26 MPa), 8000 (55.16 and 9000 (62.05 MPa)) hydrostatic pressure on ploidy pikeperch larvae. Pressure shock was applied 5 min after fertilization eggs at a water temperature 14.8 ± 1 °C. A 7000 for 10 or 20 min, while treatments lasted min. Each treatment with its respective control completed in triplicate, where females' served as replicate. In groups exposed to only diploid triploid larvae were identified, 2n/3n mosaic individuals...
Sterlet Acipenser ruthenus is the smallest in size, early maturing, yet third production scale among sturgeon species and as such presents a good model to study reproductive biology. The present aimed evaluate effects of preseason artificial reproduction reduction hormonal dosage on egg quality pond-reared sterlet. Therefore, series three trials were conducted period 2021 2022 (21 22) that evaluated dosages mammalian gonadotropin releasing hormone analog des-Gly10-(d-Ala6)-GnRH (40, 20, 10...
In the present study, 10 allotriploid (3nALT) and allopentaploid (5nALP) six-month-old hybrid fish two 3nALT four 5nALP 40-month-old fish, which resulted by crossing female Russian sturgeon Acipenser gueldenstaedtii (Brandt Ratzeberg, 1833) male American paddlefish Polyodon spathula (Walbaum, 1792), were investigated. It was revealed that hybrids initially had “undifferentiated” gonads, while in hybrids, only testes observed one case of hybrids. The testis partially developed with...