The impact of catch-and-release on feeding responses and aggressive behavior in Nile tilapia (Oreochromis niloticus)

2021 ◽  
pp. 1-16
Author(s):  
Bruno Camargo-dos-Santos ◽  
Vanessa Stramantinoli Rossi ◽  
Bruno Bastos Gonçalves ◽  
Juliane de Abreu Campos Machado Leutz ◽  
Percilia Cardoso Giaquinto ◽  
...  
Keyword(s):  
Aggressive Behavior ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Catch And Release ◽  
Nile Tilapia Oreochromis Niloticus ◽  
The Impact

scholarly journals The impact of stocking density and dietary carbon sources on the growth, oxidative status and stress markers of Nile tilapia (Oreochromis niloticus) reared under biofloc conditions

2020 ◽  
Vol 16 ◽  
pp. 100282 ◽  
Author(s):  
Mohamed A.A. Zaki ◽  
Ahmed N. Alabssawy ◽  
Abd El-Aziz M. Nour ◽  
Mohammed F. El Basuini ◽  
Mahmoud A.O. Dawood ◽  
...  
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Carbon Sources ◽  
Stocking Density ◽  
Oxidative Status ◽  
Stress Markers ◽  
Nile Tilapia Oreochromis Niloticus ◽  
The Impact

scholarly journals The effect of increased light intensity on the aggressive behavior of the Nile tilapia, Oreochromis niloticus (Teleostei: Cichlidae)

2013 ◽  
Vol 30 (2) ◽  
pp. 125-129 ◽  
Author(s):  
Thaís B. Carvalho ◽  
Francine Z. Mendonça ◽  
Roselene S. Costa-Ferreira ◽  
Eliane Gonçalves-de-Freitas
Keyword(s):  
Light Intensity ◽  
Aggressive Behavior ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Nile Tilapia Oreochromis Niloticus

Effects of methylphenidate on the aggressive behavior, serotonin and dopamine levels, and dopamine-related gene transcription in brain of male Nile tilapia (Oreochromis niloticus)

2019 ◽  
Vol 45 (4) ◽  
pp. 1377-1391 ◽  
Author(s):  
Isabela Gertrudes Batalhão ◽  
Daína Lima ◽  
Ana Paula Montedor Russi ◽  
Camila Nomura Pereira Boscolo ◽  
Danilo Grunig Humberto Silva ◽  
...  
Keyword(s):  
Aggressive Behavior ◽  
Gene Transcription ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Related Gene ◽  
Nile Tilapia Oreochromis Niloticus

scholarly journals Investigating the Effect of an Oxytetracycline Treatment on the Gut Microbiome and Antimicrobial Resistance Gene Dynamics in Nile Tilapia (Oreochromis niloticus)

Antibiotics ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 1213
Author(s):  
Christopher J. Payne ◽  
James F. Turnbull ◽  
Simon MacKenzie ◽  
Margaret Crumlish
Keyword(s):  
Antimicrobial Resistance ◽  
Antibiotic Treatment ◽  
Resistance Genes ◽  
Gut Microbiome ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Antimicrobial Resistance Genes ◽  
Antimicrobial Resistance Gene ◽  
The Impact

Antibiotics play a vital role in aquaculture where they are commonly used to treat bacterial diseases. However, the impact of antibiotic treatment on the gut microbiome and the development of antimicrobial resistance in Nile tilapia (Oreochromis niloticus) over time remains to be fully understood. In this study, fish were fed a single treatment of oxytetracycline (100 mg/kg/day) for eight days, followed by a 14-day withdrawal period. Changes in the distal gut microbiome were measured using 16S rRNA sequencing. In addition, the abundance of antimicrobial resistance genes was quantified using real-time qPCR methods. Overall, the gut microbiome community diversity and structure of Nile tilapia was resilient to oxytetracycline treatment. However, antibiotic treatment was associated with an enrichment in Plesiomonas, accompanied by a decline in other bacteria taxa. Oxytetracycline treatment increased the proportion of tetA in the distal gut of fish and tank biofilms of the treated group. Furthermore, the abundance of tetA along with other tetracycline resistance genes was strongly correlated with a number of microbiome members, including Plesiomonas. The findings from this study demonstrate that antibiotic treatment can exert selective pressures on the gut microbiome of fish in favour of resistant populations, which may have long-term impacts on fish health.

scholarly journals Microplastics-Induced Eryptosis and Poikilocytosis in Early-Juvenile Nile Tilapia (Oreochromis niloticus)

2021 ◽  
Vol 12 ◽  
Author(s):  
Mohamed Hamed ◽  
Alaa G. M. Osman ◽  
Ahmed E. A. Badrey ◽  
Hamdy A. M. Soliman ◽  
Alaa El-Din H. Sayed
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Recovery Period ◽  
Control Group ◽  
Dependent Manner ◽  
Concentration Dependent Manner ◽  
Nuclear Abnormalities ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Novel Biomarkers ◽  
The Impact

This study aims to assess the impact of microplastics (MPs) on erythrocytes using eryptosis (apoptosis) and an erythron profile (poikilocytosis and nuclear abnormalities), considered to be novel biomarkers in Nile tilapia (Oreochromis niloticus). In this study, four groups of fish were used: The first was the control group. In the second group, 1 mg/L of MPs was introduced to the samples. The third group was exposed to 10 mg/L of MPs. Finally, the fourth group was exposed to 100 mg/L of MPs for 15 days, following 15 days of recovery. The fish treated with MPs experienced an immense rise in the eryptosis percentage, poikilocytosis, and nuclear abnormalities of red blood cells (RBCs) compared with the control group in a concentration-dependent manner. Poikilocytosis of MP-exposed groups included sickle cell shape, schistocyte, elliptocyte, acanthocyte, and other shapes. Nuclear abnormalities of the MPs-exposed groups included micronuclei, binucleated erythrocytes, notched, lobed, blebbed, and hemolyzed nuclei. After the recovery period, a greater percentage of eryptosis, poikilocytotic cells, and nuclear abnormalities in RBCs were still evident in the groups exposed to MPs when crosschecked with the control group. The results show concerning facts regarding the toxicity of MPs in tilapia.

The Impact of Sublethal Concentrations of Treated Leachate on Nile tilápia (Oreochromis niloticus)

2019 ◽  
Vol 102 (4) ◽  
pp. 519-524
Author(s):  
Michel Gallão ◽  
Karla G. Gnocchi ◽  
Luciano R. Carvalho ◽  
Bruno F. Silva ◽  
Andressa N. Barbosa ◽  
...  
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Nile Tilapia Oreochromis Niloticus ◽  
The Impact ◽  
Sublethal Concentrations

scholarly journals Characterization and evaluation of the impact of feed management on the effluents of Nile tilapia (Oreochromis niloticus) culture

2005 ◽  
Vol 48 (1) ◽  
pp. 81-90 ◽  
Author(s):  
Ana Eliza Baccarin ◽  
Antonio Fernando Monteiro Camargo
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Crude Protein ◽  
Chicken Manure ◽  
Natural Food ◽  
Effluent Water ◽  
Feed Management ◽  
Nile Tilapia Oreochromis Niloticus ◽  
The Impact

The objective of this study was to evaluate the effect of different feed management on the quality of effluent water generated in Nile tilapia (Oreochromis niloticus) culture ponds. Feed was supplied as follows: natural food, and pelleted, extruded or minced ration. The study was conducted during 19 weeks in 12 continuous water exchange ponds of 300 m² each, with a population of male Nile tilapia juveniles, in a density equal to 1.7 fish m-2. Feeds contained 30% crude protein, 3,000 kcal digestible energy, and were supplied twice a day. Natural food consisted of chicken manure. Temperature, dissolved oxygen, pH, total phosphorus, total nitrogen, chlorophyll a and suspended solids were monitored weekly in the supplying and effluent water. Water residence time was also determined for the ponds. In general, effluent water quality decreased in all treatments.

scholarly journals The Impact of Lake Ecosystems on Mineral Concentrations in Tissues of Nile Tilapia (Oreochromis niloticus L.)

Animals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 1000
Author(s):  
Tokuma Negisho Bayissa ◽  
Sangi Gobena ◽  
Donna Vanhauteghem ◽  
Gijs Du Laing ◽  
Mulugeta Wakjira Kabeta ◽  
...  
Keyword(s):  
Oreochromis Niloticus ◽  
Inductively Coupled Plasma ◽  
Nile Tilapia ◽  
Lake Ecosystems ◽  
Inductively Coupled ◽  
Element Concentrations ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Plasma Mass Spectrometry ◽  
Mineral Concentrations ◽  
The Impact

This study evaluates the differences in mineral and toxic trace element concentrations of Nile tilapia (Oreochromis niloticus) tissues from three aquatic ecosystems in Ethiopia—Lake Ziway, Lake Langano, and Gilgel Gibe reservoir—with a focus on edible (fillet) and discarded (digestive tract, gills, skin, and liver) parts. A total of sixty (n = 60) Nile tilapia samples were collected, comprising twenty (n = 20) fish from each lake, and analyzed by inductively coupled plasma mass spectrometry. All elements varied markedly among tissues and between the lakes. Some differences in element concentrations were attributed to differences in nutrient load in the ecosystems and the function of the tissues. For instance, the calcium concentrations in skin and gill were distinctly higher in fish from calcium-rich Lake Langano. The d iscarded parts were richer in essential trace elements, showing an opportunity to promote their use in human nutrition to increase the intake of important minerals. However, the accumulation of elements toxic to humans, such as aluminum, should be monitored and, in particular, controlled when rearing these fish in aquaculture.

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