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Luke Holman 《Behavioral ecology and sociobiology》2009,63(11):1679-1688
The causes and consequences of variation in sperm quality, survival and ageing are active areas of research in ecology and
evolution. In order to address these topics, many recent studies have measured sperm viability using fluorescent staining.
Although sperm viability staining has produced a number of interesting results, it has some potential pitfalls that have rarely
been discussed. In the present paper, I review the major findings of ecology and evolution studies employing sperm viability
staining and outline the method’s principle limitations. The key problem is that the viability assay may itself kill sperm,
which is likely to confound many common experimental designs in addition to producing artificially low estimates of sperm
viability. I further suggest that sperm number should be routinely measured in sperm viability studies, as it may be an important
but overlooked source of spurious results. I provide methodological advice on sperm viability staining aimed at minimising
artefacts and producing robust conclusions, and discuss possible avenues for future research.
Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users. 相似文献
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