Reproduction of the salamander Siren intermedia le conte with especial reference to oviducal anatomy and mode of fertilization

Journal of Morphology
David M SeverJohn D Krenz

Abstract

Reproduction was studied in a South Carolina population of the paedomorphic salamander Siren intermedia with emphasis on anatomy of the female oviduct. The oviduct forms 67-79% of the snout-vent length in this elongate species and can be divided into three portions. The atrium, 7-13% of oviducal length, is the narrow anteriormost portion, with the ostial opening immediately caudad of the transverse septum. The ampulla, 63-75% of oviducal length, is the highly convoluted, middle portion in which gelatinous coverings are added to the eggs during their passage. Hypertrophy of the oviducal glands in the ampulla causes the ampulla to increase in diameter during the ovipository season. The secretion of the eosinophilic oviducal glands is intensely positive following staining with the periodic acid-Schiff procedure and does not react with alcian blue at pH 2.5. This staining reaction, coupled with the presence of abundant rough endoplasmic reticulum and Golgi complexes, indicates that the secretion contains a glycoprotein. The ovisac, 16-25% of oviducal length, is the most posterior portion of the oviduct and holds up to 10-11 eggs prior to oviposition. Oviducal glands similar to those in the ampulla are absent in the ovisac. Oviposit...Continue Reading

References

Oct 1, 1978·Journal of Morphology·E W Mclaughlin, A A Humphries
Sep 1, 1963·Journal of Morphology·S N SALTHE
Dec 1, 1994·Journal of Morphology·M C A UribeR A Brandon

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Citations

Mar 27, 2001·Journal of Morphology·D M SeverW C Hamlett
Mar 2, 2013·Microscopy Research and Technique·Sthefanie FernandezAlan Peres Ferraz De Melo
Dec 26, 2001·The Journal of Experimental Zoology·David M Sever

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