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首页> 外文期刊>Journal of Applied Ichthyology >Sperm motility characteristics of wild Atlantic salmon (Salmo salar L.) and sea trout (Salmo trutta m. trutta L.) as a basis for milt selection
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Sperm motility characteristics of wild Atlantic salmon (Salmo salar L.) and sea trout (Salmo trutta m. trutta L.) as a basis for milt selection

机译：野生大西洋鲑（Salmo salar L.）和海鳟（Salmo trutta m。trutta L.）的精子运动特征作为选择鱼腥藻的基础

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摘要

The aim of the study was to determine the sperm motility parameters in wild Atlantic salmon and sea trout to define criteria important for selection of milt for controlled fertilisation. Parameters for these species were determined in the fish migrating into north-western rivers of Poland at spawning time. Eight motility parameters percentage of motile sperm (MOT), curvilinear velocity (VCL), average path velocity (VAP), straight line velocity (VSL), linearity (LIN), straightness (STR), amplitude of lateral head displacement (ALH), beat cross frequency (BCF) and motility duration were subjected to computer-assisted sperm analysis (CASA). Milt of most individuals studied representing both salmon and trout showed spermatozoa density of 12-22 x 10(9) ml(-1) and a high percentage of motile sperm (> 70%). In general, spermatozoa swim progressively with slightly curved trajectories (mean STR = 70%, LIN = 65%) and velocity VCL of 180 mu m s(-1) (salmon) and 190 mu m s(-1) (trout), at 10 s post-activation. Such sperm is easily accessible in the wild populations of salmon and sea trout and is recommended for use in reproduction trials. The spermatozoa of sea trout seem to show a greater tendency to follow curvilinear trajectories than those of salmon, both in the beginning and the final phase of motion. In the first phase of motility, the values and time dependencies of the motility parameters were similar in both species. In the end phase of movement differences in LIN and BCF time dependencies were found in the samples representing the two species. In salmon the linearity and beat cross frequency remained stable in this phase, contrary to the patterns in sea trout for which LIN decreased while BCF increased in the end period of movement. Durations of movement were similar in both species (ranges of 20-40 s).
机译：该研究的目的是确定野生大西洋鲑鱼和海鳟的精子活力参数，从而确定对于选择受精受精的麦粒重要的标准。确定了这些物种的参数，这些鱼类是在产卵时移入波兰西北河流的鱼类中确定的。八个运动参数百分比：运动精子（MOT），曲线速度（VCL），平均路径速度（VAP），直线速度（VSL），线性（LIN），直线度（STR），侧向头部位移幅度（ALH），对搏动交叉频率（BCF）和运动持续时间进行计算机辅助精子分析（CASA）。接受研究的大多数代表鲑鱼和鳟鱼的体温都显示精子密度为12-22 x 10（9）ml（-1），活动精子的比例很高（> 70％）。一般而言，在10点时，精子会以略微弯曲的轨迹逐渐游动（平均STR = 70％，LIN = 65％），速度VCL为180μms（-1）（鲑鱼）和190μms（-1）（鳟鱼）激活后。这种精子在鲑鱼和海鳟的野生种群中很容易获得，建议用于生殖试验。在运动的开始和结束阶段，海鳟的精子似乎比鲑鱼更倾向于遵循曲线轨迹。在运动的第一阶段，两个物种的运动参数的值和时间相关性相似。在运动的最后阶段，在代表这两个物种的样本中发现了LIN和BCF的时间依赖性差异。在鲑鱼中，线性度和节拍交叉频率在此阶段保持稳定，这与海鳟的模式相反，在该模式下，LIN下降而运动结束时BCF上升。两个物种的运动持续时间相似（范围为20-40 s）。

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