Morphology of the kidney in the West African caecilian, Geotrypetes seraphini (Amphibia, Gymnophiona, Caeciliidae)

Journal of Morphology
N MøbjergM Wilkinson

Abstract

This study deals with the morphology and ultrastructure of the mesonephros in adult caecilians of the species Geotrypetes seraphini. Based on serial sections in paraffin and araldite, nephrons are reconstructed and the cellular characteristics of different nephron segments described. The long and slender mesonephric kidneys of G. seraphini are broadest caudally and taper toward the front, where the organs are divided into smaller segmental divisions. Two nephron types can be distinguished on the basis of their connections to the coelom and their position within the nephric tissue: ventral nephrons connect to the coelom via a ciliated peritoneal funnel, whereas medial nephrons lack this connection. Both nephron types are composed of a filtration unit, the Malpighian corpuscle, and a renal tubule, which can be divided into six morphologically distinct segments: neck segment, proximal tubule, intermediate segment, early distal tubule, late distal tubule, and collecting tubule. Collecting tubules merge and form a branch system that opens into collecting ducts. Collecting ducts empty into the Wolffian duct. Proximal tubules of nephrons in the frontal divisions are morphologically different from the proximal tubules of more caudal ki...Continue Reading

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Citations

Dec 14, 2006·Pflügers Archiv : European journal of physiology·Nadja MøbjergIvana Novak
Jul 3, 2007·Cell and Tissue Research·Koichiro IchimuraTatsuo Sakai
Jan 1, 2009·Archives of Histology and Cytology·Koichiro IchimuraTatsuo Sakai
Jan 13, 2006·The Veterinary Clinics of North America. Exotic Animal Practice·Todd R Cecil
Oct 3, 2012·Developmental Dynamics : an Official Publication of the American Association of Anatomists·Koichiro IchimuraTomoko Obara
Nov 6, 2012·Micron : the International Research and Review Journal for Microscopy·Chun-Sheng XuQiu-Sheng Chen
May 17, 2006·The Anatomical Record. Part A, Discoveries in Molecular, Cellular, and Evolutionary Biology·José L OjedaYuen K Ip
Oct 7, 2020·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Carlos A Serrano-Perez, Martha Patricia Ramírez-Pinilla
Jul 25, 2021·Acta histochemica·Elena V SeliverstovaNatalya P Prutskova

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