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DANS-EASY
Dataset . 2014
Data sources: B2FIND
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DRYAD; ZENODO; NARCIS
Dataset . 2014
License: CC 0
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Data from: Male sperm storage compromises sperm motility in guppies

Authors: Gasparini, Clelia; Kelley, Jennifer L.; Evans, Jonathan P.;

Data from: Male sperm storage compromises sperm motility in guppies

Abstract

Sperm senescence can have important evolutionary implications due to its deleterious effects on sperm quality and offspring performance. Consequently, it has been argued that polyandry (female multiple mating) may facilitate the selection of younger, and therefore competitively superior, sperm when ejaculates from multiple males compete for fertilization. Surprisingly, however, unequivocal evidence that sperm ageing influences traits that underlie sperm competitiveness is lacking. Here, we used a paired experimental design that compares sperm quality between ‘old’ and ‘young’ ejaculates from individual male guppies (Poecilia reticulata). We show that older sperm exhibit significant reductions in sperm velocity compared with younger sperm from the same males. We found no evidence that the brightness of the male's orange (carotenoid) spots, which are thought to signal resistance to oxidative stress (and thus age-related declines in sperm fitness), signals a male's ability to withstand the deleterious effects of sperm ageing. Instead, polyandry may be a more effective strategy for females to minimize the likelihood of being fertilized by aged sperm.

datasetit is a paired dataset describing sperm viability and sperm velocity assessed when sperm were young or old. Please see text for details.sp ageing.csv

Keywords

medicine and health care, Poecilia reticulata, Life Sciences, Medicine, Sperm age, sperm velocity

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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