Epidermal glands in squamata: Microscopical examination of precloacal glands in Amphisbaena alba (Amphisbaenia, Amphisbaenidae)

Epidermal glands in squamata: Microscopical examination of precloacal glands in Amphisbaena alba (Amphisbaenia, Amphisbaenidae)

Autor Jared, C. Google Scholar
Antoniazzi, M. M. Google Scholar
Silva, JRMC Google Scholar
Freymuller, E. Google Scholar
Instituição Inst Butantan
Universidade de São Paulo (USP)
Universidade Federal de São Paulo (UNIFESP)
Resumo The femoral or cloacal region of many species of lizards and amphisbaenians exhibits epidermal glands. the pores of these glands are plugged with holocrine solid secretions that serve as semiochemical sources. Many authors assume that these glands are mainly associated with reproduction and demarcation of territory. the structure of precloacal glands in Amphisbaena alba was previously studied by Antoniazzi et al. (Zoomorphology 113:199-203, 1993; J, Morphol, 221:101-109, 1994). These authors suggested that as the animal moves inside tunnels, the secretion plugs are abraded against the substrate, releasing a secretion trail. Some aspects of the plug were difficult to interpret in fine sections due to the dense and brittle nature of the plug. the morphology of the trail, and the manner of deposition on the substrate, have never been reported. This study presents a primarily scanning electron microscopic description of A. alba precloacal glands and of the secretion plugs. It also demonstrates experimentally the formation of the trail and its fine morphology. the results show that when the plugs scrape against the substrate, their constitution helps them to fragment into tiny pieces, which are spread on the ground, thus forming a trail. Each one of the fragments corresponds to a secretion granule of the precloacal gland's secretory cells. in this way, the trail might have an extensive area for volatilization of semiochemicals, constituting an efficient means of intraspecific communication inside the tunnels. J. Morphol. 241:197-206, 1999. (C) 1999 Wiley-Liss, Inc.
Palavra-chave squamata
amphisbaenia
Amphisbaena a alba
epidermal glands
precloacal glands
Idioma Inglês
Data de publicação 1999-09-01
Publicado em Journal of Morphology. New York: Wiley-liss, v. 241, n. 3, p. 197-206, 1999.
ISSN 0362-2525 (Sherpa/Romeo, fator de impacto)
Publicador Wiley-Blackwell
Extensão 197-206
Fonte http://dx.doi.org/10.1002/(SICI)1097-4687(199909)241:3<197
Direito de acesso Acesso restrito
Tipo Artigo
Web of Science WOS:000082275000001
Endereço permanente http://repositorio.unifesp.br/handle/11600/26134

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