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Animals
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Advances in Reproductive Physiology of Fish
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Advances in Reproductive Physiology of Fish

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

Deadline for manuscript submissions: 30 November 2026 | Viewed by 1988

Editors

Dr. Bin Wang

E-Mail Website
Guest Editor
State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
Interests: fish reproduction; fish endocrinology; fish physiology; aquaculture; artificial breeding
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Xin Qi

E-Mail Website
Guest Editor
Fisheries College, Ocean University of China, Qingdao 266003, China
Interests: steroid function and regulation; reproductive behavior; reproduction-related environmental factors; sex determination and differentiation
Dr. Alejandro S. Mechaly

E-Mail Website
Guest Editor
Instituto de Investigaciones en Biodiversidad y Biotecnología (INBIOTEC-CONICET), Mar del Plata, Argentina
Interests: fishes; reproduction; endocrinology; neuropeptide; genomics

Special Issue Information

Dear Colleagues,

The reproductive physiology of fish is very important to maintain sustainable development for the aquaculture industry. The aim of this Special Issue is to provide a comprehensive and updated vision on contributions of valuable basic and applied studies that address the reproductive physiology of fish. Generally, the Special Issue is divided into the following sections: (1) Sex determination and differentiation; (2) Brain-pituitary-gonad axis; (3) Oogenesis/vitellogenesis and ovulation; (4) Spermatogenesis and spermiation; (5) Gamete, egg quality, fertilization, and hatching; (6) Reproductive biotechnologies; (7) Environmental and anthropogenic impacts; (8) Behavior and pheromones. Original research articles, short communications and reviews that focus on the reproductive physiology of fish are welcome.

Dr. Bin Wang
Prof. Dr. Xin Qi
Dr. Alejandro S. Mechaly
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 250 words) can be sent to the Editorial Office for assessment.

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-anonymized 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

  • fishes
  • reproduction
  • endocrinology
  • neuropeptide
  • growth
  • metabolism
  • development
  • sex determination
  • genomics
  • ecotoxicology

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

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Research

19 pages, 32560 KB  
Article
Metabolomic Profiling Reveals Intestinal Metabolic Reprogramming in Chinese Tongue Sole (Cynoglossus semilaevis) Against Vibrio harveyi Infection
by Weiwei Zheng, Yadong Chen, Tengteng Wang, Huizong Han, Zhihong Liu, Dong Xu, Xiaoqing Xi and Tao Yang
Animals 2026, 16(11), 1715; https://doi.org/10.3390/ani16111715 - 3 Jun 2026
Viewed by 864
Abstract
Vibriosis caused by V. harveyi led to high mortality and enormous economic losses in Chinese tongue sole aquaculture. However, the intestinal metabolic alterations associated with V. harveyi infection remain unclear. In this study, ultra-performance liquid chromatography–mass spectrometry (LC-MS)-based metabolomics was used to investigate [...] Read more.
Vibriosis caused by V. harveyi led to high mortality and enormous economic losses in Chinese tongue sole aquaculture. However, the intestinal metabolic alterations associated with V. harveyi infection remain unclear. In this study, ultra-performance liquid chromatography–mass spectrometry (LC-MS)-based metabolomics was used to investigate the variations in intestinal metabolic phenotypes among control, susceptible, and resistant Chinese tongue sole after 7 days of V. harveyi infection. Histopathological examination revealed severe intestinal damages in susceptible fish, whereas resistant fish displayed only mild changes. Principle components analysis (PCA) and partial least-squares discriminant analysis (PLS-DA) revealed distinct separation of intestinal metabolites among three groups. A total of 2948 metabolites were identified, with 437 and 794 differential metabolites detected in the resistant and susceptible groups, respectively. The KEGG enrichment analysis revealed that resistant individuals primarily enriched amino acid metabolism and TCA cycle to support immunity and tissue repair, whereas susceptible individuals enriched sphingolipid and cGMP-PKG signaling pathways linked to inflammation and apoptosis, indicating divergent metabolic strategies during V. harveyi infection. Thirty-two potential metabolite biomarkers (area under the curve (AUC) = 1) were screened, which could effectively distinguish susceptible and resistant individuals. Correlation analysis further demonstrated strong interactions among these metabolite markers, host immune-related differentially expressed genes (DEGs), and intestinal microbes. Collectively, our findings reveal distinct intestinal histopathological changes and metabolic reprogramming in resistant and susceptible individuals following V. harveyi infection and identify a set of candidate biomarkers, providing a theoretical foundation for developing targeted prevention strategies and immune enhancement approaches against V. harveyi infection in Chinese tongue sole. Full article
(This article belongs to the Special Issue Advances in Reproductive Physiology of Fish)
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16 pages, 6863 KB  
Article
Characterization of Forkhead Box Transcription Factor (foxl) in Sex Differentiation of Chinese Tongue Sole (Cynoglossus semilaevis)
by Haipeng Yan, Lijun Wang, Xuexue Sun, Mingyue He, Yingming Yang, Zhen Meng, Xihong Li, Na Wang, Zhongdian Dong and Wenteng Xu
Animals 2026, 16(4), 602; https://doi.org/10.3390/ani16040602 - 14 Feb 2026
Viewed by 667
Abstract
Chinese tongue sole (Cynoglossus semilaevis) is an important mariculture product in northern China, exhibiting significant sexual dimorphism: females grow 2–4 times faster than males and ultimately attain much greater body weights. As a well-known transcription factor crucial for regulating sex differentiation, [...] Read more.
Chinese tongue sole (Cynoglossus semilaevis) is an important mariculture product in northern China, exhibiting significant sexual dimorphism: females grow 2–4 times faster than males and ultimately attain much greater body weights. As a well-known transcription factor crucial for regulating sex differentiation, foxl2 has been characterized in various mammals. Herein, we identified and characterized three foxl genes, foxl1, foxl2a and foxl2l. Three foxl genes exhibited a gonad-biased expression pattern, where foxl2a showed higher expression in ovary than in testis, while foxl1 and foxl2l exhibited higher expression in testis. All foxl genes were detected in testes and ovaries by ISH; foxl1/foxl2l were expressed in oocytes and sperm, and foxl2a in granulosa cells and sperm. Overexpression of foxl in testicular cells led to KEGG enrichment in DNA repair, MAPK, FOXO and progesterone-mediated oocyte maturation pathways. In tongue sole testicular cell line, knockdown of foxl1 and foxl2l resulted in upregulation of multiple male-related genes. In contrast, knockdown of foxl2a led to decreased expression of aromatase genes and increased expression of ctnnb1, indicating that foxl2a is more closely associated with female differentiation and maintenance. Our study investigated the functions of the foxl gene family in teleosts and offers valuable insights into their role in sex differentiation and gonadal maintenance in teleost fish. Full article
(This article belongs to the Special Issue Advances in Reproductive Physiology of Fish)
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