MORPHOLOGICAL-STUDY OF THE DESERT HETEROMYID KIDNEY WITH EMPHASIS ON THE GENUS PEROGNATHUS
MORPHOLOGICAL-STUDY OF THE DESERT HETEROMYID KIDNEY WITH EMPHASIS ON THE GENUS PEROGNATHUS
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DOI：
10.1002/ar.1091940311
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发表时间：
1979-01-01
影响因子：
--
通讯作者：
KRUTZSCH, PH
中科院分区：
文献类型：
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作者：
ALTSCHULER, EM;NAGLE, RB;KRUTZSCH, PH
3个种的肾脏形态。本文对荒漠栖鼠（P. penicillatus、P. baileyi和P. amplus）与鼠（Dipodomys）的种群结构进行了比较。merriami]和同域分布的2种仓鼠[Peromyscus eremicus和Onychomys torridus]。Perognathus有一个高度适应的单极肾脏，尿液浓度可达7500 mOsm[毫渗摩尔]/KgH 2 O。在这些肾脏中观察到两个主要变化。内髓和外髓都有延长。当以肾脏重量来衡量各区域的厚度时，长毛鼠的外髓质是广泛研究的梅氏鼠的3.8倍，内髓质是广泛研究的梅氏鼠的2.2倍。肾小球的大小有很大的差异。20%的肾小球非常大，位于延髓区。这些肾小球的直径比数量更多的浅表肾小球大1.5-1.6倍。这些结构的修改进行了定量和功能的影响进行了讨论，特别是在这些沙漠居民的尿液浓缩能力。
The renal morphology of 3 spp. of desert dwelling Perognathus rodents [P. penicillatus, P. baileyi and P. amplus] were compared to Dipodomys [D. merriami] and 2 species of sympatric cricetid rodents [Peromyscus eremicus and Onychomys torridus]. Perognathus has a highly adapted unipolar kidney capable of urine concentration of to 7500 mOsm[milliosmoles]/KgH2O. Two major modifications were observed in these kidneys. There is elongation of both the inner and outer medulla. When the thickness of the regions in P. penicillatus are factored by kidney wt, the outer medulla is 3.8 and the inner medulla is 2.2 times greater in length than the extensively studied Dipodomys merriami. There is great variance in glomerular size with .apprx. 20% of the glomeruli being very large and located in the juxta medullary region. These glomeruli are 1.5-1.6 times greater in diameter than the more numerous superficial glomeruli. These structural modifications are quantitated and the functional implications are discussed particularly in relation to urine concentrating ability in these desert inhabitants.