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- Title
Morphological Description of Unusual Urinary Tract in the Female of a Rodent, Galea spixii (Wagler, 1831).
- Authors
Santos, Amilton Cesar; Lopes Olio, Rennan; Carvalho Viana, Diego; Oliveira, Moacir Franco; Miglino, Maria Angélica; Assis Neto, Antonio Chaves
- Abstract
The Galea spixii are rodents belonging to the subfamily Caviinae and family Caviidae. They live in the semiarid Caatinga vegetation of Brazilian Northeastern. Currently, they are on the red list of endangered species by the International Union of Conservation of Nature. Due to the importance and the need for more knowledge on the species, we aimed to describe morphologically, the urinary organs in females of G. spixii adults, from scientific breeding, by detailed anatomical and histological description. The urinary organs of females consist of a pair of asymmetric kidneys (right and left) constituted by medullar and cortical region, with renal corpuscles and proximal and distal convoluted tubules, beyond collector tubules. The ureters began in the renal pelvis in the hilum region, and followed caudally until the oval-shaped urinary bladder. The ureters and urinary bladder was lined by transitional epithelium, and presented muscular and serous layers. The urethra was divided into two portions: pelvic urethra lined by squamous epithelium and clitoral urethra with its ostium opening at the top of the clitoris, forming a pseudo-penis. At the clitoris, the urethral glands were present at the base, but were not present at the apex. Finally, further studies during development, particularly during sexual differentiation in order to explain the origin of clitoral urethra and a possible intrauterine masculinization of the female are required.
- Subjects
RODENT morphology; ANIMAL morphology; ENDANGERED species; URINARY organs; URETERS
- Publication
Pakistan Journal of Zoology, 2014, Vol 46, Issue 6, p1617
- ISSN
0030-9923
- Publication type
Article