Nwoha P U
Department of Anatomy and Cell Biology, Obafemi Awolowo University, Ile-Ife, Nigeria.
Kaibogaku Zasshi. 1995 Aug;70(4):307-12.
This study was undertaken to correlate the weights of the body (Bw), testis (Tw), epididymis (Ew), cauda epididymidis (CEw), length (TL), diameter (TD), and area (TLD) of testis in adult Wistar rats, Eidolon helvum (mogachiropteran bat), red Sokoto goats, and white Yankassa rams. The results showed that it was only in the Wistar rats that TL, TD and TLD correlated significantly with TW (p < 0.01). Bw showed no significant correlation with Tw in the mammals. Tw correlated very significantly (p < 0.01) with Ew, and CEw in the rat, goat, and ram but not in the bat. These findings suggest that testicular weight, a measure of daily sperm production, relates with testis length, diameter and area, measures of testicular size, only in Wistar rat but not in the red Sokoto goat, white Yankassa ram, or Eidolon helvum; and that body weight has no relevance in the assessment of the reproductive performance of the males of these mammalian species. It further suggests that in the bat, a flying mammal, testicular weight does not relate to indices of sperm transport (epididymal weight) and storage (cauda epididymal weight) unlike in the terrestrial mammals studied.
本研究旨在关联成年Wistar大鼠、埃及果蝠（埃及大蝙蝠）、红索科托山羊和白色扬卡萨公羊的体重（Bw）、睾丸重量（Tw）、附睾重量（Ew）、附睾尾重量（CEw）、睾丸长度（TL）、直径（TD）和面积（TLD）。结果表明，仅在Wistar大鼠中，TL、TD和TLD与TW显著相关（p < 0.01）。在这些哺乳动物中，Bw与Tw无显著相关性。在大鼠、山羊和公羊中，Tw与Ew以及CEw极显著相关（p < 0.01），但在蝙蝠中并非如此。这些发现表明，作为每日精子产生量指标的睾丸重量，仅在Wistar大鼠中与作为睾丸大小指标的睾丸长度、直径和面积相关，而在红索科托山羊、白色扬卡萨公羊或埃及果蝠中并非如此；并且体重与这些哺乳动物雄性的生殖性能评估无关。这进一步表明，与所研究的陆生哺乳动物不同，在飞行哺乳动物蝙蝠中，睾丸重量与精子运输指标（附睾重量）和储存指标（附睾尾重量）无关。
