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A Sex-Attractant in the Cloacal Gland of the Newt, Cynops Pyrrhogaster

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image of Netherlands Journal of Zoology
For more content, see Archives Néerlandaises de Zoologie (Vol 1-17) and Animal Biology (Vol 53 and onwards).

A novel female-attracting pcptidc consisting of ten amino acid residues was isolated from the abdominal gland of the cloaca of the male newt, Cynops pyrrhogaster. Both the native and synthetic peptides exhibited similar activity in attracting female newts. An immunohistochemical study using an antiscrum raised against the peptide revealed that the peptide occurs in the apical portion of the epithelial cells of the abdominal gland. The substance is considered to be species-specific and to act through olfactory organs.

Affiliations: 1: Department of Biology, School of Education, Waseda University, Nishiwaseda, Tokyo 169-50, Japan; 2: Department of Physiology, Nara Medical University, Kashihara 634, Japan; 3: PRESTO, JRDC, Wako 351-01, Japan; 4: Institute of Endocrinology, Gunma University, Maebashi 371, Japan; 5: Department of Pharmacology. Nippon Medical School, Tokyo 113, Japan; 6: Gunma Prefec-tural College of Health Science, Maebashi 371, Japan


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