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ORIGINAL ARTICLES
Published online: 2020-01-27
Submitted: 2019-10-02
Accepted: 2020-01-19
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Anatomical characterization of the kidneys of Didelphis aurita (Didelphimorphia: Didelphidae)

S. V. Peçanha, R. Dünkel-Duarte, F. C. S. Bernardes, T. M. Estruc, R. M. do Nascimento, C. A. dos Santos-Sousa, Paulo de Souza Junior, M. Abidu-Figueiredo
DOI: 10.5603/FM.a2020.0006
·
Pubmed: 32020581

open access

Ahead of Print
ORIGINAL ARTICLES
Published online: 2020-01-27
Submitted: 2019-10-02
Accepted: 2020-01-19

Abstract

Didelphis aurita is a marsupial with wide distribution in the South American continent and highly adapted to urban centers. The objective of this study was to describe the measurements and skeletopy of the kidneys and renal vascularization of this species. With this aim, 29 cadavers (14 males and 15 females) of D. aurita collected on highways were analyzed. The rostrum-sacral length of specimens, kidney measurements (length, width and thickness) and the length of the renal vessels were measured and the renal skeletopy registered. In the right kidney, average length, width, thickness and ellipsoid volume were 28.6±5.0 mm, 15.6±2.9 mm, 12.8±3.0mm e 3.3±2.4cm3, respectively; in the left kidney, 31.0±3.8 mm, 14.5±3.6 mm, 12.6±2.6 mm e 3.2±2.2cm3, respectively. There was no significant difference in the comparison of averages of renal dimensions between sexes and between antimeres. The right renal artery (13.2±2.6 mm) was significantly longer (p < 0.01) than the left renal artery (10.7±2.3mm). Oposely, the left renal vein (13.9±3.5 mm) was longer (p < 0.01) than the right renal vein (7.0±2.3 mm). The skeletopy of the right kidney predominated between T13-L1 in 58.6% of the cases and the skeletopy of the left kidney between L1-L3 in 41.4%. The average length of the kidneys corresponded to 6 to 8% of the rostrum-sacral length of the specimens. The data of the present study characterized the measurements and topography of kidneys and renal vessels in D. aurita and can support the interpretation of clinical, experimental and pathological findings in this species.

Abstract

Didelphis aurita is a marsupial with wide distribution in the South American continent and highly adapted to urban centers. The objective of this study was to describe the measurements and skeletopy of the kidneys and renal vascularization of this species. With this aim, 29 cadavers (14 males and 15 females) of D. aurita collected on highways were analyzed. The rostrum-sacral length of specimens, kidney measurements (length, width and thickness) and the length of the renal vessels were measured and the renal skeletopy registered. In the right kidney, average length, width, thickness and ellipsoid volume were 28.6±5.0 mm, 15.6±2.9 mm, 12.8±3.0mm e 3.3±2.4cm3, respectively; in the left kidney, 31.0±3.8 mm, 14.5±3.6 mm, 12.6±2.6 mm e 3.2±2.2cm3, respectively. There was no significant difference in the comparison of averages of renal dimensions between sexes and between antimeres. The right renal artery (13.2±2.6 mm) was significantly longer (p < 0.01) than the left renal artery (10.7±2.3mm). Oposely, the left renal vein (13.9±3.5 mm) was longer (p < 0.01) than the right renal vein (7.0±2.3 mm). The skeletopy of the right kidney predominated between T13-L1 in 58.6% of the cases and the skeletopy of the left kidney between L1-L3 in 41.4%. The average length of the kidneys corresponded to 6 to 8% of the rostrum-sacral length of the specimens. The data of the present study characterized the measurements and topography of kidneys and renal vessels in D. aurita and can support the interpretation of clinical, experimental and pathological findings in this species.

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Keywords

animal anatomy, big-eared opossum, marsupial, nephrology, urogenital system

About this article
Title

Anatomical characterization of the kidneys of Didelphis aurita (Didelphimorphia: Didelphidae)

Journal

Folia Morphologica

Issue

Ahead of Print

Published online

2020-01-27

DOI

10.5603/FM.a2020.0006

Pubmed

32020581

Keywords

animal anatomy
big-eared opossum
marsupial
nephrology
urogenital system

Authors

S. V. Peçanha
R. Dünkel-Duarte
F. C. S. Bernardes
T. M. Estruc
R. M. do Nascimento
C. A. dos Santos-Sousa
Paulo de Souza Junior
M. Abidu-Figueiredo

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