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Vertebrate reproductive science and technology
REVIEW

Sperm motility in fish: technical applications and perspectives through CASA-Mot systems

V. Gallego A and J. F. Asturiano A B
+ Author Affiliations
- Author Affiliations

A Grupo de Acuicultura y Biodiversidad, Instituto de Ciencia y Tecnología Animal, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain.

B Corresponding author. Email: jfastu@dca.upv.es

Reproduction, Fertility and Development 30(6) 820-832 https://doi.org/10.1071/RD17460
Submitted: 20 October 2017  Accepted: 18 December 2017   Published: 9 March 2018

Abstract

Although a relatively high number of sperm quality biomarkers have been reported over the years in several fish species, sperm motility is nowadays considered the best biomarker for fish spermatozoa. The first scientific reports focusing on fish sperm motility date from a century ago, but the objective assessment allowed by computer-aided sperm analysis (CASA-Mot) systems was not applied to fish species until the mid-1980s. Since then, a high number of sperm kinetic parameters from more than 170 fish species have been reported in more than 700 scientific articles, covering a wide range of topics, such as sperm physiology, sperm storage, broodstock management, the phenomenon of sperm competition, ecotoxicology and understanding the life cycle of the species. The sperm kinetic parameters provided by CASA-Mot systems can serve as powerful and useful tools for aquaculture and ecological purposes, and this review provides an overview of the major research areas in which fish sperm motility assessment by a CASA-Mot system has been used successfully.

Additional keywords: kinetic, sperm quality, spermatozoa, velocity.


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