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Cloacal anatomy of the palmate newt, Triturus helveticus (Amphibia, Salamandridae)

Cloacal anatomy of the palmate newt, Triturus helveticus (Amphibia, Salamandridae) AbstractThe cloacal anatomy of the palmate newt, Triturus helveticus, was studied in both sexes using light and scanning electron microscopes. The female cloaca is characterized by the occurrence of rugae and folds. Two folds are especially prominent in the region where the spermathecal tubules open into the cloaca. In addition to sperm storage structures, vent glands are obvious in the connective tissue around the cloacal orifice. Their pores occur externally to the cloacal borders, thus suggesting that these glands are a possible source of mating pheromones. Typical features of the male cloaca are: a ciliated epithelium; a cloacal tube dorsal and separate from the anterior cloacal chamber; a broad pseudopenis and wide lateral recesses in the cloacal chamber. Four main types of cloacal glands are recognized in males (dorsal, pelvic, Kingsbury's, and ventral gland). Quite unusual is the occurrence of two distinct types of dorsal glands, possibly related to the production of different pheromonal substances. These glands in the male, together with the occurrence of vent glands in the female, are proposed as cloacal specializations for the production of unequivocal species-specific sex attractants. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Amphibia-Reptilia Brill

Cloacal anatomy of the palmate newt, Triturus helveticus (Amphibia, Salamandridae)

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Publisher
Brill
Copyright
Copyright © Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0173-5373
eISSN
1568-5381
DOI
10.1163/1568538041975152
Publisher site
See Article on Publisher Site

Abstract

AbstractThe cloacal anatomy of the palmate newt, Triturus helveticus, was studied in both sexes using light and scanning electron microscopes. The female cloaca is characterized by the occurrence of rugae and folds. Two folds are especially prominent in the region where the spermathecal tubules open into the cloaca. In addition to sperm storage structures, vent glands are obvious in the connective tissue around the cloacal orifice. Their pores occur externally to the cloacal borders, thus suggesting that these glands are a possible source of mating pheromones. Typical features of the male cloaca are: a ciliated epithelium; a cloacal tube dorsal and separate from the anterior cloacal chamber; a broad pseudopenis and wide lateral recesses in the cloacal chamber. Four main types of cloacal glands are recognized in males (dorsal, pelvic, Kingsbury's, and ventral gland). Quite unusual is the occurrence of two distinct types of dorsal glands, possibly related to the production of different pheromonal substances. These glands in the male, together with the occurrence of vent glands in the female, are proposed as cloacal specializations for the production of unequivocal species-specific sex attractants.

Journal

Amphibia-ReptiliaBrill

Published: Jan 1, 2004

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