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Animals
Special Issues
Stress Biomarkers in Aquatic Organisms
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Stress Biomarkers in Aquatic Organisms

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

Deadline for manuscript submissions: closed (1 March 2023) | Viewed by 2749

Special Issue Editors

Dr. Daniela Bertotto

E-Mail Website
Guest Editor
Department of Comparative Biomedicine and Food Science (BCA), University of Padova, I-35122 Padova, Italy
Interests: fish reproduction and gamete quality in aquaculture; fish and animal welfare in rearing and natural systems; stress indicators
Prof. Dr. Giuseppe Radaelli

E-Mail Website
Guest Editor
Department of Comparative Biomedicine and Food Science (BCA), University of Padova, I-35122 Padova, Italy
Interests: stress markers in animals of veterinary interest (fish and mollusks, pigs and rabbits) in farmed as well as in wild conditions

Special Issue Information

Summary: The assessment of stress in animals is essential in both farmed and wild environments due to chronic stress conditions being able to undermine the health of animals, reduce their welfare and their ability to reproduce. Aquatic organisms are not exempt from this and, indeed, studies indicate that there are many factors and conditions that can induce a state of stress in these animals. It is, therefore, essential to identify biomarkers capable of recording this altered state, the use of even non-invasive biological matrices and alternative simple methods applicable in the field would also be preferable. With this collection, we would, therefore, like to collect articles presenting innovative and ready-to-use acute and chronic stress biomarkers to be used in fish, crustaceans and mollusks for the evaluation of animals in natural and farmed conditions.

Dr. Daniela Bertotto
Prof. Dr. Giuseppe Radaelli
Guest Editors

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

  • biomarkers
  • stress
  • fish
  • mollusks
  • crustacean
  • alternative matrices
  • physiology
  • morphology

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Published Papers (1 paper)

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Research

15 pages, 3095 KiB  
Article
Transcriptomic Analysis of Takifugu obscurus Gills under Acute Hypoxic Stress
by Huakun Zhang, Run Li, Yaohui Wang, Jinxu Zhou, Hao Xu, Meng Gou, Jianhua Ye, Xuemei Qiu and Xiuli Wang
Animals 2023, 13(10), 1572; https://doi.org/10.3390/ani13101572 - 9 May 2023
Cited by 4 | Viewed by 1821
Abstract
Takifugu obscurus has relatively small gills and gill pores, leading to a relatively low respiratory capacity and increased vulnerability to low dissolved oxygen (DO) levels compared to other fish. To investigate the responses of T. obscurus to acute hypoxic stress, high-throughput-sequencing-based transcriptomic analyses [...] Read more.
Takifugu obscurus has relatively small gills and gill pores, leading to a relatively low respiratory capacity and increased vulnerability to low dissolved oxygen (DO) levels compared to other fish. To investigate the responses of T. obscurus to acute hypoxic stress, high-throughput-sequencing-based transcriptomic analyses were conducted here to assess the responses of T. obscurus gills to acute hypoxic stress. Three environmental conditions were compared including normoxia (DO: 7.0 ± 0.2 mg/L), hypoxic stress (DO: 0.9 ± 0.2 mg/L), and reoxygenation (4, 8, 12, and 24 h after return to normoxia) conditions to identify differentially expressed genes (DEGs) responsive to hypoxia. A total of 992, 877, 1561, 1412, and 679 DEGs were identified in the normoxia and reoxygenation for 4, 8, 12, and 24 h groups in comparison to the hypoxia groups, respectively. The DEGs were primarily associated with oxidative stress, growth and development, and immune responses. Further functional annotation enrichment analysis of the DEGs revealed that they were primarily related to cytokine–cytokine interactions, transforming growth factor β receptor (TGF-β), cell adhesion molecules (CAMs), the vascular endothelial growth factor (VEGF) signaling pathway, and the mitogen-activated protein kinase (MAPK) signaling pathway. These results provide new insights into the physiological and biochemical mechanisms of T. obscurus adaptations to hypoxic stress. Furthermore, these results provide a framework for future studies into the molecular mechanisms of hypoxia tolerance and the healthy culture of T. obscurus and other fish. Full article
(This article belongs to the Special Issue Stress Biomarkers in Aquatic Organisms)
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