Abstract
Behavioral observation was conducted to test whether olfaction is functional to detect tetrodotoxin (TTX) in tiger puffer Takifugu rubripes using Y-maze. We placed either agarose carrier or one agarose and one agarose containing TTX (200 MU) at each head of the channel of Y-maze. Then three non-toxic hatchery-reared juveniles (body length, 5.6 ± 0.4 cm; n = 18) were released into the Y-maze and pecking behavior to carrier was observed for 3 h. The same procedure was tested for olfactory-ablated juveniles and for juveniles taht received sham operation. Juveniles showed significant selectivity to TTX, except for olfactory-ablated juveniles. These results indicate that pufferfish detects TTX by olfactory organ.
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Acknowledgments
We are grateful to the constructive comments from the reviewers and the section editor on the earlier version of this manuscript. This study was supported by Grants-in-Aid for Scientific Research (Nos. 21580227, 24380109 and 23580283) by JSPS, Japan.
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Okita, K., Yamazaki, H., Sakiyama, K. et al. Puffer smells tetrodotoxin. Ichthyol Res 60, 386–389 (2013). https://doi.org/10.1007/s10228-013-0353-z
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DOI: https://doi.org/10.1007/s10228-013-0353-z