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Paralytic shellfish poison as an attractant for toxic snails

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Abstract

The attracting effect of paralytic shell poison (PSP) on eight toxic snail species (Polinices didyma, Natica lineata, N. vitellus, Zeuxis sufflatus, Niotha clathrata, Oliva miniacea, O. mustelina, O. hirasei) and two non-toxic species (Pomacea canaliculata, Satsuma bairdi) was investigated. Eight toxic species were reported to contain tetrodotoxin, and three out of these contained minor PSP. The minimum lethal dose of PSP in most toxic gastropods was estimated to be more than 150 MU PSP/20 g body weight, but in non-toxic gastropods was less than 15 MU PSP/20 g body weight. After the attracting test, all toxic gastropods showed significant positive linear relationship (Y=3.716X+0.363, r=0.8427) between comparative attracting variation and the toxicity reported. The relationship between PSP resistance ability and the toxicity also had a positive correlation (Y=0.91X+210.090, r=0.6803). However, the non-toxic species showed a negative response. This indicates that PSP is an attractant for toxic snails.

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Correspondence to Deng-Fwu Hwang.

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Hwang, PA., Noguchi, T. & Hwang, DF. Paralytic shellfish poison as an attractant for toxic snails. Fish Sci 73, 202–207 (2007). https://doi.org/10.1111/j.1444-2906.2007.01320.x

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  • DOI: https://doi.org/10.1111/j.1444-2906.2007.01320.x

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