Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Nondisjunction01:21

Nondisjunction

Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate correctly and move to the opposite poles of the cells. This produces daughter cells with abnormal chromosome numbers.  Nondisjunction is common during anaphase I or anaphase II of meiosis.  Mutations in synaptonemal complex proteins that attach homologous chromosomes increase the chances of nondisjunction in anaphase I of meiosis I. In contrast, mutations in topoisomerases and condensins that hold sister...
Oogenesis02:07

Oogenesis

In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways from the equivalent procedure of spermatogenesis in males. First, meiotic divisions during oogenesis are asymmetric, meaning that a large oocyte (containing most of the cytoplasm) and minor polar body are produced as a result of meiosis I, and again following meiosis II. Since only oocytes will go on to form embryos if fertilized, this unequal...
Meiosis I03:09

Meiosis I

Meiosis is the division of a diploid cell into haploid cells forming sperm and eggs in animals through differentiation. Meiosis I is the first stage of meiosis, where the genetic recombination of homologous chromosomes and the reduction of the ploidy level by half occurs.
Prophase I is the most extended and complex step of meiosis I characterized by synapsis, chromosome pairing, and recombination of the homologous chromosomes. This process is facilitated by a proteinaceous structure called the...
Menopause01:28

Menopause

Menopause, a natural biological process marking the end of a woman's fertility, typically occurs between the fifth and sixth decade of life. This phase is characterized by the exhaustion of the ovarian follicle pool, leading to less responsive ovaries despite the high levels of Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH). The consequential decrease in estrogen production results in symptoms like hot flashes, heavy sweating, headaches, hair loss, muscle pains, vaginal...
Energy Budgets and Reproductive Strategies00:51

Energy Budgets and Reproductive Strategies

Organisms must balance energy intake with the energy required for growth, maintenance, and reproduction. These trade-offs result in a variety of survivorship and reproductive strategies, including semelparity and iteroparity. Semelparous species reproduce only once in their lifetime, often investing most available resources into that single reproductive event. Iteroparous species, by contrast, reproduce multiple times over their lifetimes, typically allocating fewer resources to any single...
Natural Selection and Mating Preferences01:06

Natural Selection and Mating Preferences

The principle of natural selection posits that organisms better adapted to their environment are more likely to survive and reproduce. This principle is closely intertwined with mating preferences, a key aspect of sexual selection, which evolutionary psychologists believe is driven by instincts to propagate one's genes. Such instincts significantly influence mating behaviors and preferences between genders.
Females, due to their biological roles in conception, pregnancy, and nursing, inherently...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Investigations into the Concentrations and Metabolite Profiles of Doping Agents and Antidepressants in Human Seminal Fluid Using Liquid Chromatography-Mass Spectrometry.

Drug metabolism and disposition: the biological fate of chemicals·2024
Same author

Practice and development of male contraception: European Academy of Andrology and American Society of Andrology guidelines.

Andrology·2023
Same author

Why we need more methods for male contraception.

Andrology·2022
Same author

History of the European Academy of Andrology.

Andrology·2022
Same author

Corifollitropin Alfa Combined With Human Chorionic Gonadotropin in Adolescent Boys With Hypogonadotropic Hypogonadism.

The Journal of clinical endocrinology and metabolism·2022
Same author

Carbon isotope ratios of endogenous steroids found in human serum-method development, validation, and reference population-derived thresholds.

Analytical and bioanalytical chemistry·2021

Related Experiment Video

Updated: Jun 20, 2026

Determination of Reproductive Competence by Confirming Pubertal Onset and Performing a Fertility Assay in Mice and Rats
06:38

Determination of Reproductive Competence by Confirming Pubertal Onset and Performing a Fertility Assay in Mice and Rats

Published on: October 13, 2018

Paternal age and reproduction.

Gideon A Sartorius1, Eberhard Nieschlag

  • 1Centre of Reproductive Medicine and Andrology of the University, Muenster, Germany.

Human Reproduction Update
|August 22, 2009
PubMed
Summary
This summary is machine-generated.

Advanced paternal age (over 40) is linked to reduced fertility and increased risks for pregnancy complications and offspring health issues. This highlights the importance of considering male reproductive health in family planning.

More Related Videos

Stable Isotope In-Vivo Labeling for Mass-Spectrometry Identification of Paternal Metabolites Transferred from Sperm to Oocyte During Fertilization
05:55

Stable Isotope In-Vivo Labeling for Mass-Spectrometry Identification of Paternal Metabolites Transferred from Sperm to Oocyte During Fertilization

Published on: June 17, 2025

The Replica Set Method: A High-throughput Approach to Quantitatively Measure Caenorhabditis elegans Lifespan
11:58

The Replica Set Method: A High-throughput Approach to Quantitatively Measure Caenorhabditis elegans Lifespan

Published on: June 29, 2018

Related Experiment Videos

Last Updated: Jun 20, 2026

Determination of Reproductive Competence by Confirming Pubertal Onset and Performing a Fertility Assay in Mice and Rats
06:38

Determination of Reproductive Competence by Confirming Pubertal Onset and Performing a Fertility Assay in Mice and Rats

Published on: October 13, 2018

Stable Isotope In-Vivo Labeling for Mass-Spectrometry Identification of Paternal Metabolites Transferred from Sperm to Oocyte During Fertilization
05:55

Stable Isotope In-Vivo Labeling for Mass-Spectrometry Identification of Paternal Metabolites Transferred from Sperm to Oocyte During Fertilization

Published on: June 17, 2025

The Replica Set Method: A High-throughput Approach to Quantitatively Measure Caenorhabditis elegans Lifespan
11:58

The Replica Set Method: A High-throughput Approach to Quantitatively Measure Caenorhabditis elegans Lifespan

Published on: June 29, 2018

Area of Science:

  • Reproductive Medicine
  • Human Reproduction
  • Gerontology

Background:

  • Sociological trends show increasing rates of delayed childbearing in developed nations.
  • Delayed childbearing presents complex reproductive challenges, impacting fertility and pregnancy outcomes.
  • While maternal age effects are well-documented, paternal age influence on reproduction is less understood.

Purpose of the Study:

  • To review and summarize the current knowledge on the effects of paternal age on reproductive function and outcomes.
  • To highlight the association between male aging and genetic abnormalities in germ cells.

Main Methods:

  • Systematic literature search of PubMed.
  • Inclusion of original research articles and review articles.
  • Updating previous survey findings.

Main Results:

  • Increasing paternal age correlates with decreased androgen levels, reduced sexual activity, and altered testicular morphology.
  • Paternal age impacts sperm DNA integrity, telomere length, and may have epigenetic effects.
  • Paternal age over 40 is associated with diminished fertility, increased pregnancy complications, and adverse offspring outcomes.

Conclusions:

  • While advanced maternal age warrants intensive prenatal diagnosis, advanced paternal age alone does not necessitate invasive diagnostic procedures.
  • The findings underscore the significance of paternal age in reproductive health assessments.