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Animals
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Improving Fish Health and Welfare: The Toxicology of Fish
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Improving Fish Health and Welfare: The Toxicology of Fish

A special issue of Animals (ISSN 2076-2615). This special issue belongs to the section "Aquatic Animals".

Deadline for manuscript submissions: 30 April 2024 | Viewed by 4560

Special Issue Editor

Dr. Daniele Aparecida Matoso

E-Mail Website
Guest Editor
Laboratório de Biotecnologia e Citogenômica Animal, Departamento de Genética, Instituto de Ciências Biológicas, Universidade Federal do Amazonas, Manaus 69067-005, Brazil
Interests: cytogenomics; epigenetics; epigenetic toxicology; molecular biology; karyotype diversification; fish biology

Special Issue Information

Dear Colleagues,

In recent years, toxicology has undergone rapid transformation and now has a new and emerging set of facts and issues. This volume serves as a bridge between toxicology and several related areas and will include a collection of peer-reviewed research and development concerning several topics, including toxicology, epigenetic toxicology, transcriptomics, action of plastic residues pollutants, pesticides, and household and industrial effluents, in natural and controlled environments. The aim here is to inform the public about research related to toxicological studies applied to the aquatic environment with fish as model organisms.

Dr. Daniele Aparecida Matoso
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Animals is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • fish toxicology
  • fish biology
  • epigenetic toxicology
  • organic pollutants
  • toxic metals
  • pesticides
  • plastic residues

Published Papers (3 papers)

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Research

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13 pages, 1037 KiB  
Article
Evaluation of Interactions of Added Soybean Peroxidase with Other Nutrients Present in Fish Feeds Using an In Vitro Digestive Simulation
by Wesclen Vilar Nogueira, María Jesús Aznar-García, Francisca P. Martínez-Antequera, Antonia M. Barros de Las Heras, Marcelo Borges Tesser, Jaqueline Garda-Buffon and Francisco Javier Moyano
Animals 2023, 13(19), 3046; https://doi.org/10.3390/ani13193046 - 28 Sep 2023
Viewed by 636
Abstract
Peroxidase (PO) has been applied in different areas of industrial biotechnology, including the control of contaminants like aflatoxin B1 in fish feeds. However, its potential negative interactions with the macro and micro components of feeds have not been evaluated. The aim of [...] Read more.
Peroxidase (PO) has been applied in different areas of industrial biotechnology, including the control of contaminants like aflatoxin B1 in fish feeds. However, its potential negative interactions with the macro and micro components of feeds have not been evaluated. The aim of this study was to evaluate the impact of PO’s addition to a feed on compounds like fatty acids and polyphenols using an in vitro simulation of the digestive tract of the tilapia. The influence on fatty acids was determined by changes in the peroxide index, with the feed including PO presenting values four times higher than those of the control feed. On the other hand, the in vitro digestive simulation also evidenced an effect of PO on the bioaccessibility of polyphenols significantly influenced by the total digestion time and temperature. The bioaccessibility of polyphenol ranged from 2.09 to 16.23 μmol of the total Trolox equivalent antioxidant capacity for the combinations evaluated in the study. The greatest bioaccessibility was observed at the central point under the following conditions of digestive hydrolysis: pH of 7, 30 °C, 4.5 h of digestive hydrolysis and an absence of PO. Full article
(This article belongs to the Special Issue Improving Fish Health and Welfare: The Toxicology of Fish)
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19 pages, 2428 KiB  
Article
Ammonia Increases the Stress of the Amazonian Giant Arapaima gigas in a Climate Change Scenario
by José Fernando Paz Ramírez, Renan Diego Amanajás and Adalberto Luis Val
Animals 2023, 13(12), 1977; https://doi.org/10.3390/ani13121977 - 14 Jun 2023
Viewed by 1229
Abstract
Ammonia is toxic to fish, and when associated with global warming, it can cause losses in aquaculture. In this study, we investigated the physiological and zootechnical responses of Arapaima gigas to the current scenarios and to RCP8.5, a scenario predicted by the IPCC [...] Read more.
Ammonia is toxic to fish, and when associated with global warming, it can cause losses in aquaculture. In this study, we investigated the physiological and zootechnical responses of Arapaima gigas to the current scenarios and to RCP8.5, a scenario predicted by the IPCC for the year 2100 which is associated with high concentrations of environmental ammonia (HEA). Forty-eight chipped juvenile A. gigas were distributed in two experimental rooms (current scenario and RCP8.5) in aquariums with and without the addition of ammonia (0.0 mM and 2.44 mM) for a period of 30 days. The HEA, the RCP8.5 scenario, and the association of these factors affects the zootechnical performance, the ionic regulation pattern, and the levels of ammonia, glucose, triglycerides, sodium, and potassium in pirarucu plasma. The branchial activity of H+-ATPase was reduced and AChE activity increased, indicating that the species uses available biological resources to prevent ammonia intoxication. Thus, measures such as monitoring water quality in regard to production, densities, and the feed supplied need to be more rigorous and frequent in daily management in order to avoid the accumulation of ammonia in water, which, in itself, proved harmful and more stressful to the animals subjected to a climate change scenario. Full article
(This article belongs to the Special Issue Improving Fish Health and Welfare: The Toxicology of Fish)
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Review

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14 pages, 1047 KiB  
Review
Current Aspects on the Plastic Nano- and Microparticles Toxicity in Zebrafish—Focus on the Correlation between Oxidative Stress Responses and Neurodevelopment
by Alexandra Savuca, Mircea Nicușor Nicoara, Alin Ciobica, Dragos Lucian Gorgan, Dorel Ureche and Ioana Miruna Balmus
Animals 2023, 13(11), 1810; https://doi.org/10.3390/ani13111810 - 30 May 2023
Cited by 2 | Viewed by 2165
Abstract
Recent reports focusing on the extent of plastic pollution have shown that many types of fibers and polymers can now be found in most marine species. The severe contamination of plastic nano-/microparticles (NPs/MPs) mainly results in immediate negative outcomes, such as organic impairments [...] Read more.
Recent reports focusing on the extent of plastic pollution have shown that many types of fibers and polymers can now be found in most marine species. The severe contamination of plastic nano-/microparticles (NPs/MPs) mainly results in immediate negative outcomes, such as organic impairments and tissue damage, as well as long-termed negative effects, such as developmental retardation and defects, chronic inflammation, oxidative stress (OS), metabolic imbalance, mutagenesis, and teratogenesis. Oxidative responses are currently considered the first line molecular signal to potential toxic stimuli exposure, as the oxidative balance in electron exchange and reactive oxygen species signaling provides efficient harmful stimuli processing. Abnormal signaling or dysregulated ROS metabolism—OS—could be an important source of cellular toxicity, the source of a vicious cycle of environmental and oxidative signaling-derived toxicity. As chemical environmental pollutants, plastic NPs/MPs can also be a cause of such toxicity. Thus, we aimed to correlate the possible toxic effects of plastic NPs/MPs in zebrafish models, by focusing on OS and developmental processes. We found that plastic NPs/MPs toxic effects could be observed during the entire developmental span of zebrafish in close correlation with OS-related changes. Excessive ROS production and decreased antioxidant enzymatic defense due to plastic NPs/MPs exposure and accumulation were frequently associated with acetylcholinesterase activity inhibition, suggesting important neurodevelopmental negative outcomes (cognitive abnormalities, neurodevelopmental retardation, behavioral impairments) and extraneuronal effects, such as impaired digestive physiology. Full article
(This article belongs to the Special Issue Improving Fish Health and Welfare: The Toxicology of Fish)
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