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This Research Topic is part of the Sperm Physiology series:

This Research Topic is part of the Sperm Physiology series:
Sperm Physiology in Aquatic Invertebrates: From Biochemistry to Biotechnology – Volume II.

Fish play a role in the World's food supply, and consumption has grown steadily over the last five decades. Aquaculture production has also increased, now accounting for 50% of all fish consumed globally. Artificial reproduction is essential for the sustainable development of aquaculture production, as it allows high quality progeny to be established, which maintains the level of stock necessary for breeding. Thus, its study from a biochemical to a biotechnological perspective is key for a successful aquaculture strategy. Through a biochemistry perspective, it is possible to better-understand the production of fish gametes. Hence, providing insights to assess sperm maturity and quality, fertility rate, and to optimize reproductive processes by means of biotechnological tools. On the other hand, there are a large number of potential species of interest for aquaculture whose reproductive aspects are unknown and this essential for their eventual production in fish farms.

Although traditional methods to provide fish gametes are often associated with altered function parameters, damage or morphological immaturity, the exact source of these dysfunctions has not yet been established. Here it is expected to discuss the formulation of in vitro protocols, their biochemical basis and biotechnological relevance to close the gap between basic research and applied technology, and in due process, provide solutions for the shortcomings of this industry. This Research Topic aims to ponder on cell and molecular biology aspects of production, development, activation, motility, fertility, preservation, and the development of quality parameters and tools to ensure fish gametes quality.

The present Research Topic shall welcome original research articles, brief research reports, reviews, mini reviews and perspectives on the following (or related) research areas:
• Physiology of fish spermatozoa
• Physiological and molecular response
• Cell stress response
• Mineral balance
• Chemical homeostasis
• Proteomic analysis
• Genomic analysis
• Metabolomic analysis
• Cryobiology
• Cold storage
• Pathology
• In vitro reproduction
• In vivo reproduction
• Guidelines for sperm handling
• Protocols for sperm incubation
• Bioprocessing and Scaling-up
• Sperm motility
• Cell membrane biophysics
• System biology
• Evaluation of semen quality
• Sperm cell structures
• Mitochondrial factors
• Diet and nutritional factors
• Spermatogenic tissue
• Spermatogenesis
• Sperm cell fractions
• Sperm cell adaptation
• Emerging tools for sperm analysis

We would like to acknowledge Dr. Mauricio J. Zamorano who contributed to the preparation of the proposal for this Research Topic.

Keywords: Flagellar Dynamics, Mitochondrial Dynamics, Artificial Reproduction, Cryobiology, Omics

Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.

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