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Buccinum leucostoma : ウィキペディア英語版 | Buccinum leucostoma
''Buccinum leucostoma'', common name the yellow-mouth Buccinum, is a species of sea snail, a marine gastropod mollusk in the family Buccinidae, the true whelks. ==Description== The size of the shell of an adult varies between 55 mm and 120 mm. The snail's salivary glands contains the toxin tetramine (tetramethylammonium ion) 〔 ( Yoko Kawashima, Yuji Nagashima and Kazuo Shiomi, ''Determination of tetramine in marine gastropods by liquid chromatography/electrospray ionization-mass spectrometry'' ; Science Direct Volume 44, Issue 2, August 2004, Pages 185-191, ) 〕 The male shell tends to be smaller and more slender than the female shell. The interior of the peristome in male specimens is characterised by a reddish orange colour, while in female specimens it is whitish or yellowish. 〔 (Tiba Ranzi, ''Sexual dimorphism in some species of Buccinidae''; The malacological society of Japan, 11(2-3), 87-94, 1941-11-25, 1941 ) 〕
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