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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F19%3A43899069" target="_blank" >RIV/60076658:12520/19:43899069 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0378432018308819" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0378432018308819</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.anireprosci.2019.01.010" target="_blank" >10.1016/j.anireprosci.2019.01.010</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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 degrees 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 degrees C), the percentage of motile cells was markedly variable among males. An abrupt increase in the linearity index was observed between 15 and 20 degrees C suggesting a physiological threshold in sperm movement at about 20 degrees 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 degrees 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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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 degrees 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 degrees C), the percentage of motile cells was markedly variable among males. An abrupt increase in the linearity index was observed between 15 and 20 degrees C suggesting a physiological threshold in sperm movement at about 20 degrees 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 degrees 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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10604 - Reproductive biology (medical aspects to be 3)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Animal Reproduction Science

ISSN

0378-4320

e-ISSN

—

Svazek periodika

202

Číslo periodika v rámci svazku

neuveden

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

65-72

Kód UT WoS článku

000460718700009

EID výsledku v databázi Scopus

2-s2.0-85060847357