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Related Concept Videos

Male Sexual Response: Erection & Ejaculation01:17

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Sexual stimulation can take various forms, such as physical touch and visual or auditory cues. When this happens, the parasympathetic reflex in the sacral portion of the spinal cord is activated. This reflex stimulates the release of nitric oxide (NO), which then dilates the arterioles in the penis, increasing blood flow to the erectile tissues - the corpora cavernosa and corpus spongiosum.
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Related Experiment Video

Updated: Oct 15, 2025

Sperm Collection of Differential Quality Using Density Gradient Centrifugation
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Mate Retention Behavior and Ejaculate Quality in Humans.

Tara DeLecce1, Todd K Shackelford2, Virgil Zeigler-Hill2

  • 1Department of Psychology, Oakland University, 213B Pryale Hall, Rochester, MI, 48309, USA. tdelecce@oakland.edu.

Archives of Sexual Behavior
|October 29, 2021
PubMed
Summary
This summary is machine-generated.

Human males do not appear to use mate retention behaviors and ejaculate quality investment in a compensatory manner. This study found no significant link between these anti-cuckoldry tactics.

Keywords:
Anti-cuckoldry tacticsEjaculate qualityMate retentionSperm competition

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Area of Science:

  • Evolutionary Psychology
  • Human Reproductive Behavior

Background:

  • Some species employ mate retention behaviors and ejaculate quality as anti-cuckoldry tactics.
  • Previous research suggested humans might use these tactics compensatorily.

Purpose of the Study:

  • To conduct a conceptual replication of research on human anti-cuckoldry tactics.
  • To investigate the relationship between mate retention behavior and ejaculate quality in men.

Main Methods:

  • Recruited 41 men (aged 18-33) who had not had a vasectomy or sought infertility treatment.
  • Collected self-reported data on mate retention behaviors.
  • Analyzed ejaculate quality components (sperm velocity, concentration, motility, volume) after controlling for covariates like abstinence duration.

Main Results:

  • No statistically significant relationships were found between mate retention behavior and the four measured components of ejaculate quality.
  • The findings did not support the hypothesis of compensatory deployment of these anti-cuckoldry tactics in humans.

Conclusions:

  • The study provides limited support for the hypothesis that human males use mate retention and ejaculate quality investment compensatorily.
  • Further research is needed to understand the deployment of anti-cuckoldry tactics, particularly ejaculate quality investment, in humans.