Sperm motility of the Nile tilapia (Oreochromis niloticus): Effects of temperature on the swimming characteristics
The result's identifiers
Result code in 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>
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Sperm motility of the Nile tilapia (Oreochromis niloticus): Effects of temperature on the swimming characteristics
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10604 - Reproductive biology (medical aspects to be 3)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Animal Reproduction Science
ISSN
0378-4320
e-ISSN
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Volume of the periodical
202
Issue of the periodical within the volume
neuveden
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
8
Pages from-to
65-72
UT code for WoS article
000460718700009
EID of the result in the Scopus database
2-s2.0-85060847357