PMID- 35580574 OWN - NLM STAT- MEDLINE DCOM- 20220520 LR - 20220527 IS - 1464-3553 (Electronic) IS - 0379-864X (Linking) VI - 47 DP - 2022 Jan 1 TI - Green spotted puffers detect a nontoxic TTX analog odor using crypt olfactory sensory neurons. LID - bjac011 [pii] LID - 10.1093/chemse/bjac011 [doi] AB - Toxic puffers accumulate their defense substance (tetrodotoxin; TTX) through the food chain. Although the previous study suggests that 5,6,11-trideoxyTTX, a nontoxic TTX analog detected simultaneously with TTX in toxic puffers or their prey, acts as an olfactory chemoattractant for grass puffers, it is unclear whether toxic puffers are commonly attracted to 5,6,11-trideoxyTTX, and which types of olfactory sensory neurons (OSNs) detect 5,6,11-trideoxyTTX. Here, we demonstrated that green spotted puffer, a phylogenetically distant species from the grass puffer, is attracted to 5,6,11-trideoxyTTX. 5,6,11-TrideoxyTTX administration made green spotted puffers stay longer at the administered site, whereas a food odor (l-Arg) made them actively swim throughout the aquarium. Attractive responses were not observed when TTX or its vehicle was administered, nor when 5,6,11-trideoxyTTX was administered to anosmic fish. Furthermore, double immunohistochemistry with activity marker and crypt OSN marker antibodies labeled oval cells with apical invagination on the olfactory epithelium surface treated with 5,6,11-trideoxyTTX. These results suggest that 5,6,11-trideoxyTTX acts as an olfactory chemoattractant detected by crypt OSNs, and attraction to 5,6,11-trideoxyTTX odor appears to be a trait shared by toxic puffers for social communication or effective toxification. CI - (c) The Author(s) 2022. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com. FAU - Suzuki, Takehisa AU - Suzuki T AUID- ORCID: 0000-0003-0755-4324 AD - Laboratory of Fish Biology, Department of Animal Sciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan. FAU - Nakahigashi, Ryota AU - Nakahigashi R AD - Laboratory of Organic Chemistry, Department of Applied Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan. FAU - Adachi, Masaatsu AU - Adachi M AUID- ORCID: 0000-0001-7615-3861 AD - Laboratory of Organic Chemistry, Department of Applied Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan. FAU - Nishikawa, Toshio AU - Nishikawa T AUID- ORCID: 0000-0003-1955-6618 AD - Laboratory of Organic Chemistry, Department of Applied Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan. FAU - Abe, Hideki AU - Abe H AUID- ORCID: 0000-0002-8931-5767 AD - Laboratory of Fish Biology, Department of Animal Sciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Chem Senses JT - Chemical senses JID - 8217190 RN - 0 (Chemotactic Factors) RN - 4368-28-9 (Tetrodotoxin) SB - IM MH - Animals MH - Chemotactic Factors MH - Odorants MH - Olfactory Mucosa MH - *Olfactory Receptor Neurons MH - *Tetraodontiformes MH - Tetrodotoxin/chemistry/pharmacology OTO - NOTNLM OT - activity labeling OT - attractive behavior OT - chemical communication OT - chemoattractant OT - pheromone OT - toxification EDAT- 2022/05/18 06:00 MHDA- 2022/05/21 06:00 CRDT- 2022/05/17 18:32 PHST- 2022/05/17 18:32 [entrez] PHST- 2022/05/18 06:00 [pubmed] PHST- 2022/05/21 06:00 [medline] AID - 6586859 [pii] AID - 10.1093/chemse/bjac011 [doi] PST - ppublish SO - Chem Senses. 2022 Jan 1;47:bjac011. doi: 10.1093/chemse/bjac011.