Sperm motility of the Nile tilapia (Oreochromis niloticus): Effects of temperature on the swimming characteristics

Dzyuba Borys, Legendre Marc, Baroiller Jean-François, Cosson Jacky. 2019. Sperm motility of the Nile tilapia (Oreochromis niloticus): Effects of temperature on the swimming characteristics. Animal Reproduction Science, 202 : 65-72.

Quartile : Q2, Sujet : AGRICULTURE, DAIRY & ANIMAL SCIENCE / Quartile : Q4, Sujet : REPRODUCTIVE BIOLOGY

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Psychologie-éthologie-ergonomie

Résumé : Results of previous studies with different fish species, mostly from temperate- or cold-water habitats, indicate a species-specific diversity regarding the relationship between environmental temperature and values for sperm motility variables. In the current study, there was appraisal of environmental temperature effects on sperm motility of tilapia Oreochromis niloticus, a tropical fish species selected because of its aquaculture importance and capacity to reproduce in a broad range of water temperatures. Effects of environmental temperature on the spermatozoa motility characteristics were studied by temperature-controlled video-microscopy and CASA analysis at temperature range from 5 to 50 °C. It appeared that the Nile tilapia spermatozoa exhibit an unexpected capacity to express very different velocity characteristics over this temperature range. In the lower temperature range (5–10 °C), the percentage of motile cells was markedly variable among males. An abrupt increase in the linearity index was observed between 15 and 20 °C suggesting a physiological threshold in sperm movement at about 20 °C which is the minimum temperature for reproduction in the Nile tilapia. With faster spermatozoa velocity, there was a reduction of the motility duration at the greater temperatures. Initially, there is an increase in sperm velocity as the temperature increased until the maximal velocity occurred at 40 to 50 °C which is a temperature beyond that which occurs in natural spawning conditions. Results of the present study clearly indicate the importance of considering ambient temperature when charactering sperm motility and in determining optimal temperature conditions for fertilization in fish.

Mots-clés Agrovoc : Oreochromis niloticus, spermatozoïde, physiologie animale, température de l'eau, température d'eau environnementale, température ambiante, reproduction animale, physiologie de la reproduction, performance de reproduction

Mots-clés complémentaires : motilité des spermatozoïdes

Mots-clés libres : Tilapia, Sperm motility, Temperature

Classification Agris : L53 - Physiologie animale - Reproduction
M12 - Production de l'aquaculture
L20 - Écologie animale

Champ stratégique Cirad : CTS 2 (2019-) - Transitions agroécologiques

Agences de financement européennes : European Commission

Programme de financement européen : H2020

Projets sur financement : (EU) AQUAculture infrastructures for EXCELlence in European fish research towards 2020

Auteurs et affiliations

• Dzyuba Borys, University of South Bohemia (CZE) - auteur correspondant
• Legendre Marc, IRD (FRA)
• Baroiller Jean-François, CIRAD-PERSYST-UMR ISEM (FRA) ORCID: 0000-0002-0992-1725
• Cosson Jacky, University of South Bohemia (CZE)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/590943/)

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