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首页> 外文期刊>Canadian Journal of Zoology >Is sperm viability independent of ejaculate size in the house cricket (Acheta domesticus)?
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Is sperm viability independent of ejaculate size in the house cricket (Acheta domesticus)?

机译：精子的生存能力是否与家the中的射精量无关？

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摘要

Assessing sperm viability is a popular means of testing hypotheses related to ejaculate quality. This technique has produced interesting results; however, the sperm viability assay itself may kill sperm. This is a serious pitfall, as assay-related mortality could confound results and produce artificially low estimates of viability. To avoid spurious results, it has been recommended that investigators include sperm number in their viability analyses. Unfortunately, studies conducted to date on internal fertilizers have not included sperm counts in their analyses, so it is not possible to assess whether this factor can indeed produce artefactual results. In this paper, we use male house crickets (Acheta domesticus (L., 1758)) to show that sperm viability is dependent on sperm number and exclusion of this factor from statistical analyses affects our interpretation of experimental treatment results. We show that mechanically rupturing a spermatophore significantly reduces sperm viability, but this does not appear to drive the nonindependent relationship between viability and number. Instead, our study shows that nonindependence is due to processes other than differential physical damage to the sperm during collection. We also show that allowing a spermatophore to evacuate its sperm without rupturing for 10 min maximizes both sperm number and viability.
机译：评估精子的生存能力是检验与射精质量有关的假设的一种流行方法。这种技术产生了有趣的结果。但是，精子活力测定法本身可能会杀死精子。这是一个严重的陷阱，因为与测定相关的死亡率可能会混淆结果并导致人为地降低生存力估计值。为避免产生假结果，建议研究人员在其生存力分析中包括精子数量。不幸的是，迄今为止，有关内部肥料的研究尚未在其分析中包括精子计数，因此无法评估该因素是否确实可以产生人工结果。在本文中，我们使用雄性house（Acheta domesticus（L.，1758））来证明精子的生存能力取决于精子数量，并且从统计分析中排除该因素会影响我们对实验治疗结果的解释。我们表明，机械破裂精子细胞会显着降低精子的活力，但这似乎并没有推动活力和数量之间的非独立关系。相反，我们的研究表明，非独立性是由于采集过程中精子受到的不同物理损伤以外的过程所致。我们还表明，允许精子在不破裂的情况下排空其精子10分钟，可以使精子数量和生存能力最大化。

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