Federal Rural University of Rio de Janeiro, Rodovia BR-465, Km 7, 23897-000 Seropedica, Brazil.
Laboratory of Animal Anatomy, Federal University of Pampa, Campus Uruguaiana, BR 472, Km 585, Post box 118, 97501-970 Uruguaiana, Brazil.
Folia Morphol (Warsz). 2020;79(4):805-810. doi: 10.5603/FM.a2020.0006. Epub 2020 Feb 5.
Didelphis aurita is a marsupial with wide distribution in the South American continent and highly adapted to urban centres. The objective of this study was to describe the measurements and skeletopy of the kidneys and renal vascularisation of this species.
With this aim, 29 cadavers (14 males and 15 females) of D. aurita collected on highways were analysed. 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 ± 3.0 mm and 3.3 ± 2.4 cm3, respectively; in the left kidney, 31.0 ± 3.8 mm, 14.5 ± 3.6 mm, 12.6 ± 2.6 mm and 3.2 ± 2.2 cm3, 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 ± 2.3 mm). In contrast, 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 characterised 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.
袋貂分布于南美洲大陆，适应能力强，广泛分布于城市中心。本研究的目的是描述该物种肾脏的测量值和骨骼以及肾脏血管化。
为此，分析了在高速公路上收集的 29 具袋貂（14 只雄性和 15 只雌性）的尸体。测量标本的吻肛长、肾脏测量值（长度、宽度和厚度）以及肾血管长度，并记录肾脏骨骼。
右肾平均长度、宽度、厚度和椭圆形体积分别为 28.6 ± 5.0mm、15.6 ± 2.9mm、12.8 ± 3.0mm 和 3.3 ± 2.4cm3；左肾分别为 31.0 ± 3.8mm、14.5 ± 3.6mm、12.6 ± 2.6mm 和 3.2 ± 2.2cm3。男女之间和对侧之间肾脏尺寸平均值的比较没有显著差异。右肾动脉（13.2 ± 2.6mm）明显长于左肾动脉（10.7 ± 2.3mm）（p < 0.01）。相反，左肾静脉（13.9 ± 3.5mm）比右肾静脉（7.0 ± 2.3mm）长（p < 0.01）。右肾骨骼位于 T13-L1 之间，占 58.6%；左肾骨骼位于 L1-L3 之间，占 41.4%。肾脏的平均长度相当于标本吻肛长的 6%至 8%。
本研究的数据描述了袋貂肾脏和肾血管的测量值和骨骼特征，可为该物种的临床、实验和病理发现提供解释依据。
