Data

Data from: Male sperm storage compromises sperm motility in guppies

The University of Western Australia
Gasparini, Clelia ; Kelley, Jennifer L. ; Evans, Jon
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.5061/dryad.n687q&rft.title=Data from: Male sperm storage compromises sperm motility in guppies&rft.identifier=10.5061/dryad.n687q&rft.publisher=DRYAD&rft.description=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,&rft.creator=Gasparini, Clelia &rft.creator=Kelley, Jennifer L. &rft.creator=Evans, Jon &rft.date=2014&rft.relation=http://research-repository.uwa.edu.au/en/publications/3acd47bd-5604-477f-8d34-661a53f104b9&rft_subject=sperm velocity&rft_subject=Sperm age&rft_subject=sexual selection&rft_subject=sperm competition&rft_subject=Poecilia reticulata&rft.type=dataset&rft.language=English Access the data

Access:

Open

Full description

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,

Issued: 2014-10-28

This dataset is part of a larger collection

Click to explore relationships graph
Subjects

User Contributed Tags    

Login to tag this record with meaningful keywords to make it easier to discover

Identifiers