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Published on: March 18, 2016
Effect of salinity on nest building behaviour in the nine-spined stickleback Pungitius sinensis
Yoshiyasu Machida1, Hiroshi Takahashi2, Tetsuya Tsuruta3
1Bihoro Museum, Bihoro Town Board of Education, Hokkaido, Japan.
Abstract:
The authors evaluated the adaptability of male nine-spined sticklebacks (Pungitius sinensis) at three salinity levels (0, 5 and 10 psu) by comparing nest building success rates with nest structures. Successful nest building decreased as salinity increased. In addition, nests built in fresh water (i.e., 0 psu) were glued together, whereas those built in brackish water (5 and 10 psu) broke easily and fell from the nest site to the gravel bottom. Based on these findings, the authors suggest that P. sinensis adapts to freshwater environments.
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