OSMOLALITY AND POTASSIUM-ION - THEIR ROLES IN INITIATION OF SPERM MOTILITY IN TELEOSTS
OSMOLALITY AND POTASSIUM-ION - THEIR ROLES IN INITIATION OF SPERM MOTILITY IN TELEOSTS
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DOI：
10.1126/science.7444445
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发表时间：
1980-01-01
期刊：
影响因子：
56.9
通讯作者：
SUZUKI, K
中科院分区：
文献类型：
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作者：
MORISAWA, M;SUZUKI, K
在淡水硬骨鱼中，精子在与精浆等渗的电解质和非电解质溶液中静止，当精液用低渗溶液稀释时，精子显示出运动性。测试[鲫鱼，鲤鱼，鲫鱼和Tribolodon hakonensis]）和高渗溶液中的海洋硬骨鱼（5种。经检验[暗点东方鲀、墨华鳕、横钩环尾鳕、细口东方鲀和双斑卡氏鱼]）。环境渗透压的降低或增加可能是这些物种中启动精子活力的因素。鲑鱼精子在与精浆等渗的氯化钠溶液中的运动能力被10 mmol/kg完全抑制;食蚊鱼精子在非电解质溶液中不运动，运动能力被电解质，特别是K诱导。离子，而不是渗透压，可能是一个重要的决定因素的精子活力在鲑鱼和胎生的目的。
Spermatozoa that are quiescent in electrolyte and nonelectrolyte solutions isotonic to seminal plasma show motility when the semen is diluted with hypotonic solution in freshwater teleosts (4 spp. tested [Carassius auratus, Cyprinus carpio, Carassius carassius and Tribolodon hakonensis]) and with hypertonic solution in marine teleosts (5 spp. tested [Fugu niphobles, Gadus morrhua macrocephalus, Limanda yokohamae, Microstomus achne and Kareius bicolomatus]). Decrease or increase, respectively, in osmolality of the environment may be the factor initiating sperm motility in these species. The motility of chum salmon [Oncorhynchus keta] spermatozoa in a sodium chloride solution isotonic to seminal plasma is completely suppressed by 10 mmol/kg; topminnow [Gambusia affinis] spermatozoa were immotile in a nonelectrolyte solution and motility was induced by electrolytes, especially K. Ions, rather than osmolality, may be an essential determinant of sperm motility in salmonid and viviparous teleosis.