Article
Environmental Sciences
Zeinab M. El-Bouhy, Rasha M. Reda, Heba H. Mahboub, Fify N. Gomaa
Summary: The study evaluated the concentrations of heavy metals in Nile catfish and water samples, as well as the effectiveness of pomegranate peels in enhancing fish immunity and combating toxicity. Results showed that pomegranate supplementation, either through water or diet, reduced mercury levels and toxicity in fish.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Fisheries
Balazs Kucska, Nguyen Ngoc Quyen, Tamas Szabo, Askale Gebremichael, Getachew Worku Alebachew, Bence Bogo, Laszlo Horvath, Balazs Csorbai, Bela Urbanyi, Dariusz Kucharczyk, Szilvia Keszte, Tamas Muller
Summary: The successful propagation of fish depends on various factors, including the optimal administration routes and delivery vehicles of spawning agents. In this study, the effects of different routes of administration and delivery vehicles on ovulation in African catfish were compared. The results showed that the ovulation rate and hatching rate were similar among treatments, except for the treatment where fish sperm was introduced to the ovary by a catheter.
AQUACULTURE REPORTS
(2022)
Article
Fisheries
J. Brijs, E. Sundell, P. Hjelmstedt, C. Berg, I Sencic, E. Sandblom, M. Axelsson, J. Lines, J. Bouwsema, M. Ellis, A. Saxer, A. Grans
Summary: Different stunning methods were tested on African sharptooth catfish, revealing that ice slurry immersion induced insensibility quickly, electrical stunning induced immediate but not irreversible insensibility, and manual percussive stunning could induce immediate and irreversible insensibility but with difficulties in administration. Combining methods, such as electrical or percussive stun followed by exsanguination and ice slurry immersion, could reliably induce and maintain insensibility until death.
Article
Fisheries
F. E. Elesho, D. A. H. Sutter, M. A. C. Swinkels, J. A. J. Verreth, S. Krockel, J. W. Schrama
Summary: This study aimed to estimate the methionine requirement of African Catfish and found that growth rate, feed conversion ratio, and other parameters were significantly affected by dietary methionine levels. The research suggested a lower digestible methionine requirement for growth in African catfish compared to previous reports.
Article
Environmental Sciences
Kenneth Chukwuemeka Nwizugbo, Matthew Chidozie Ogwu, George E. Eriyamremu, Chidozie Michael Ahana
Summary: Research shows that crude oil contamination has significant effects on the survival strategy and cellular metabolism of African sharptooth catfish, potentially leading to delayed development and health risks.
Article
Biochemistry & Molecular Biology
Christian Aliu, Ogooluwa O. Ajayi, Toluwase S. Olawuyi, Oluyemi K. Gbadamosi, Fernando Barbosa, Chris O. Adedire, Joseph A. Adeyemi
Summary: This study investigated the effects of hexavalent chromium on juvenile Clarias gariepinus, including tissue accumulation, cytotoxicity, oxidative stress, and immunotoxicity. The results showed that hexavalent chromium accumulated more in the kidney and liver of the exposed fish, especially at the highest concentration. It caused lipid peroxidation, DNA fragmentation, increased enzyme activities, altered immune gene expressions, and histopathological changes in the fish.
BIOLOGICAL TRACE ELEMENT RESEARCH
(2023)
Article
Fisheries
Marina Hassan, Anuar Abdalah Nagi Melad, Nor Asma Husna Yusoff, Okomoda Victor Tosin, Nor Azri-Shah Norhan, Nur Amanina Hamdan
Summary: This study evaluated the potential of Melaleuca cajuputi leaf extract for wound treatment in artificially injured African catfish. Results showed that the extract at concentrations of 12.7 and 25.4 mg/L could accelerate wound healing.
AQUACULTURE REPORTS
(2023)
Article
Marine & Freshwater Biology
Heba H. Mahboub, Khalid Shahin, Shereen M. Mahmoud, Dalia E. Altohamy, Walaa A. Husseiny, Doaa A. Mansour, Shimaa Shalaby, Mohamed M. S. Gaballa, Mohamed Shaalan, Mohamed Alkafafy, Afaf N. Abdel Rahman
Summary: This study investigates the potential of silica nanoparticles (SiNPs) to reduce the toxic effects of lead (Pb) and mercury (Hg) in African catfish. The results show that SiNPs can decrease the concentration of heavy metals in fish and modulate various biological parameters, leading to the regeneration of liver and gill tissues.
AQUATIC TOXICOLOGY
(2022)
Article
Agriculture, Dairy & Animal Science
Sonia Mohd Kasihmuddin, Mazlan Abd Ghaffar, Simon Kumar Das
Summary: Fish are influenced by their surrounding environment, including water temperature. In this study, the effects of water temperature ranging from 26 to 32 degrees Celsius on the growth performance and gastric emptying time of African catfish fingerlings were investigated. The experiment provided baseline data on the impact of water temperature on the culture of catfish, showing that temperatures between 26 to 32 degrees Celsius were suitable for the growth of African catfish fingerlings with gastric emptying times ranging between 10 and 16 hours. Further research on the physiological parameters of fish in different water temperatures is recommended for a better understanding of aquaculture practices.
Article
Veterinary Sciences
Hamdy A. M. Soliman, Sally M. Salaah, Mohamed Hamed, Alaa El-Din H. Sayed
Summary: Microplastics and lead have varying impacts on fish, including effects on hematological, biochemical, and inflammatory signals, as well as changes in antioxidant enzyme levels.
FRONTIERS IN VETERINARY SCIENCE
(2023)
Article
Environmental Sciences
Julia Clols-Fuentes, Julien A. Nguinkal, Patrick Unger, Bernd Kreikemeyer, Harry W. Palm
Summary: Fish farming in Recirculating Aquaculture Systems (RAS) is a sustainable and efficient practice. This study analyzed the influence of different stocking densities on the water microbiome composition and identified bacterial pathogens associated with common fish farming practices. The results showed that microbiomes differ across systems and sampling points, and fish biomass and water physicochemical properties affect the microbiome.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Fisheries
Lisa Carolina Wenzel, Erwin Berchtold, Harry Wilhelm Palm
Summary: The study aimed to determine the best stocking density and grading regime for African catfish fry. The results showed that stocking density had some effects on fry behavior and growth performance, but had no significant impact on mortality rates and growth performance. Regular removal of cannibals reduced mortality rates and improved feed conversion ratio.
AQUACULTURE REPORTS
(2022)
Article
Environmental Sciences
Marc-Christopher Hildebrand, Alexander Rebl, Julien Alban Nguinkal, Harry Wilhelm Palm, Bjoern Bassmann
Summary: Fingerlings and juveniles of African catfish were reared under experimental conditions and exposed to different concentrations of Fe-DTPA. Various factors such as growth, behavior, immune response, histopathological changes, and genetic biomarkers were evaluated. The results indicate that Fe-DTPA supplementation at the tested concentrations is relatively harmless for the health and welfare of African catfish.
Article
Environmental Sciences
Faddrine Holt Jang, Changi Wong, Jenny Choo, Edwin Sien Aun Sia, Aazani Mujahid, Moritz Muller
Summary: This study aimed to quantify the transfer of trace metals from microplastics to catfish and assess its impact on the host's microbiome. The results showed that biodegradable polylactic acid transferred more metals to catfish and increased Vibrio counts in the intestines compared to polyamide 12. Trace metal accumulation was highest in the gills, followed by the liver, intestines, and edible muscles. Additionally, the study highlights the potential environmental threat posed by biodegradable polymers.
ENVIRONMENTAL POLLUTION
(2022)
Article
Fisheries
L. T. T. Phan, J. Kals, K. Masagounder, J. Mas-Munoz, J. W. Schrama
Summary: This study evaluated the effect of dietary macronutrient composition on the energy utilization efficiency for growth in African catfish using both the digestible energy (DE) and net energy (NE) approaches. The results suggested that the NE approach is more suitable for energy evaluation of feed/ingredients for African catfish.
AQUACULTURE REPORTS
(2022)
