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Related Experiment Video

Updated: May 3, 2026

Fish Sperm Assessment Using Software and Cooling Devices

Fish Sperm Assessment Using Software and Cooling Devices

Published on: July 28, 2018

Sperm variation within a single ejaculate affects offspring development in Atlantic salmon.

Simone Immler¹, Cosima Hotzy, Ghazal Alavioon

¹Department of Evolutionary Biology, Uppsala University, , Norbyvägen 18D, Uppsala 752 36, Sweden.

Biology Letters

|February 14, 2014

Summary

This summary is machine-generated.

Sperm variation within an ejaculate impacts offspring development in Atlantic salmon. Individual sperm longevity affects hatching time, suggesting transgenerational effects of sperm function.

Keywords:

epigenetics fish gamete selection haploid selection sperm competition

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Area of Science:

Reproductive biology
Animal breeding
Evolutionary biology

Background:

Sperm phenotype variation is often disregarded for offspring outcomes.
Sperm phenotypes are typically not considered reflective of sperm genotypes.

Purpose of the Study:

To investigate the impact of individual sperm function variation within ejaculates on offspring performance.
To determine if sperm longevity influences offspring development in Atlantic salmon (Salmo salar).

Main Methods:

Experimental manipulation of sperm activation-fertilization timing.
Selection of sperm cohorts with differing longevity within ejaculates.
Utilizing wild-caught male Atlantic salmon.

Main Results:

Within-ejaculate variation in sperm longevity significantly affected offspring development.
Sperm longevity influenced the time until hatching in Atlantic salmon offspring.

Conclusions:

Individual sperm function variation within an ejaculate has consequences for offspring performance.
Results provide experimental evidence for transgenerational effects of individual sperm function.
Further research is needed to ascertain the genetic or epigenetic basis of these effects.