Maturation of epididymal spermatozoa in the nondomesticated guinea pigs Cavia aperea and Galea musteloides.
Maturation of epididymal spermatozoa in the nondomesticated guinea pigs Cavia aperea and Galea musteloides.
复制标题
非驯化豚鼠豚鼠豚鼠和豚鼠附睾精子的成熟。
DOI：
10.1002/j.1939-4640.2000.tb03285.x
复制
发表时间：
2000
影响因子：
--
通讯作者：
N. Sachser
中科院分区：
文献类型：
--
作者：
T. Cooper;Susanne Weydert;C. Yeung;Christine Künzl;N. Sachser
本文对两种不同交配制度的南美豚鼠雄性生殖道精子的生理变化进行了研究。豚鼠（Cavia aperea）是家养豚鼠的野生祖先，具有一夫多妻制的交配系统，而Galea musteloides则表现出混杂的交配行为。两个物种的附睾与家养豚鼠相似，具有一条小管曲（连接器官的2个主要部分），Cavia中的小管曲尺寸较小，而Galea中的小管曲尺寸较小。较高的相对附睾重量表现在滥交的物种。在他们的旅程通过附睾，从Galea精子开发他们的运动表达的潜力比那些豚鼠更近端，但运动发展成在同一地区在这两个物种的前进。成熟豚鼠精子在体外的最大运动速度大于Galea精子。豚鼠精子的长度是盔状幼体精子的两倍，头部较大，单精子顶体在形态学制备过程中对破裂更敏感。只有在豚鼠中，在运动潜力被开发出来之后，精子才凝集成叠联。细胞质液滴沿着中段的迁移发生在两个物种的相同区域，并且在豚鼠中发生凝集之前。建议男性的生殖策略（一夫多妻制与滥交）决定了睾丸和附睾的大小，而女性的生殖生理（诱导排卵与周期）影响睾丸后发育的精子形态和运动在附睾。
The physiological changes occurring in spermatozoa in the male reproductive tract of 2 nondomesticated species of South American guinea pigs with different mating systems were studied. Cavia aperea, the wild ancestor of the domesticated guinea pig, has a polygynous mating system, whereas Galea musteloides exhibits promiscuous mating behavior. The epididymis of both species resembled that of the domesticated guinea pig, with a swathe of tubule convolutions (linking the 2 major parts of the organ) that was of smaller size in Cavia but not Galea. Higher relative epididymal weight was demonstrated in the promiscuous species. During their journey through the epididymis, spermatozoa from Galea developed their potential for motility expression more proximally than did those of Cavia, but motility developed into forward progression in the same region in both species. The maximal velocities exhibited by mature Cavia sperm in vitro were greater than those of Galea. Spermatozoa from Cavia were twice the length of those from Galea, they had larger heads, and the acrosomes of single sperm were more sensitive to disruption during morphological preparation. Only in Cavia did agglutination of sperm into rouleaux occur, after the potential for motility had been developed. Migration of the cytoplasmic droplet along the midpiece occurred in the same regions in both species and before agglutination in Cavia. It is suggested that the male's reproductive strategy (polygyny vs promiscuity) dictates the size of the testis and epididymis, whereas the female's reproductive physiology (induced ovulation vs cyclicity) influences the posttesticular development of sperm morphology and motility in the epididymis.
精子在附睾成熟过程中受精素定位于精子后头质膜域的过程分析。
影响因子：
2.7
作者：
Hunnicutt,GR;Koppel,DE;Myles,DG
通讯作者：
Myles,DG