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

Folliculogenesis01:20

Folliculogenesis

Folliculogenesis is the development of ovarian follicles, the specialized structures within the ovarian cortex where oogenesis, or egg development, occurs. This process is essential for female reproductive health and begins during fetal development when primordial follicles are formed. Each primordial follicle comprises a primary oocyte in the center, surrounded by a single layer of squamous pre-granulosa cells. These follicles remain dormant in late prophase I of meiosis until triggered by...
Ovarian Cycle01:27

Ovarian Cycle

The menstrual cycle includes a critical component known as the ovarian cycle, which undergoes two main phases each month—the follicular phase and the luteal phase. The follicular phase is variable and averaging around 14 days. Ovulation, triggered by a surge in luteinizing hormone (LH), marks the transition between the two phases. The second phase, the luteal phase, is relatively consistent, lasting approximately 14 days, and is marked by the activity of the corpus luteum. While a cycle length...
Oogenesis01:22

Oogenesis

Oogenesis,  the process of developing egg cells (female gametes), occurs within the ovaries and is fundamental to female fertility. This sequence begins during fetal development when diploid oogonia in the developing ovaries undergo mitotic divisions to produce primary oocytes. By birth, these primary oocytes enter prophase I of meiosis but become arrested in this stage, remaining suspended until puberty.
Each primary oocyte is surrounded by a layer of pre-granulosa cells, forming what is known...
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...
Hormonal Control of the Ovarian Cycle01:30

Hormonal Control of the Ovarian Cycle

The ovarian cycle is meticulously regulated by the hypothalamic-pituitary-gonadal axis. This cycle orchestrates the release of a mature oocyte, essential for reproduction.
Before puberty, the hypothalamus releases GnRH in a low frequency, low amplitude pulsatile manner. This along with the immature hypothalamic-pituitary-gonadal axis activity, results in low estrogen levels and the absence of a fully functional ovarian cycle.  At puberty, GnRH secretion increases in both frequency and...
Accessory Structures of the Skin: Hair Growth and Types01:20

Accessory Structures of the Skin: Hair Growth and Types

Hair growth begins with the production of keratinocytes by the basal cells of the hair bulb. As new cells are deposited at the hair bulb, the hair shaft is pushed through the follicle toward the surface. Keratinization is completed as the cells are pushed to the skin surface to form the shaft of hair that is externally visible. The external hair is completely dead and composed entirely of keratin. Hair can be cut or shaven without damaging the hair structure because the cut is superficial. Most...

You might also read

Related Articles

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

Sort by
Same author

Effects of foetal size, sex and developmental stage on adaptive transcriptional responses of skeletal muscle to intrauterine growth restriction in pigs.

Scientific reports·2024
Same author

MiRNAs in milk can be used towards early prediction of mammary gland inflammation in cattle.

Scientific reports·2022
Same author

Editorial - New editorial team for Domestic Animal Endocrinology.

Domestic animal endocrinology·2020
Same author

Relationships between size, steroidogenesis and miRNA expression of the bovine corpus luteum.

Theriogenology·2019
Same author

Effects of follicular ablation and induced luteolysis on LH and follicular fluid factors during the periovulatory period in mares.

Animal reproduction science·2019
Same author

Pericytes and their potential in regenerative medicine across species.

Cytometry. Part A : the journal of the International Society for Analytical Cytology·2017
Same journal

Immuno-Targeting of CLRN3 and SCAMP1 as a Potential Sex Specific Marker in Bovine Spermatozoa.

Reproduction in domestic animals = Zuchthygiene·2026
Same journal

Effect of BRD0539 on Gene Editing and Mosaicism Rate in Porcine Gene Editing Embryos by CRISPR/Cas9.

Reproduction in domestic animals = Zuchthygiene·2026
Same journal

Enhancement of Ram Sperm Quality During Chilled Storage by Supplementation With Spirulina platensis Extract.

Reproduction in domestic animals = Zuchthygiene·2026
Same journal

Associations of Management Factors and Environmental Conditions With the Number of Liveborn Piglets in a Commercial Pig Farm: A Retrospective Field Study.

Reproduction in domestic animals = Zuchthygiene·2026
Same journal

Y-Sperm Enrichment Through TLR 7/8 Validated Through Molecular and Biochemical Approaches in Sahiwal Bull.

Reproduction in domestic animals = Zuchthygiene·2026
Same journal

Evaluation of Proliferative Potential and Collagen Deposition in Vitrified Canine Testicular Fragments Subjected to Different Cryoprotectant Combinations and Warming Temperatures.

Reproduction in domestic animals = Zuchthygiene·2026
See all related articles

Related Experiment Video

Updated: Jul 3, 2026

Analysis of Chromosome Segregation, Histone Acetylation, and Spindle Morphology in Horse Oocytes
12:11

Analysis of Chromosome Segregation, Histone Acetylation, and Spindle Morphology in Horse Oocytes

Published on: May 11, 2017

Follicle development in mares.

F X Donadeu1, H G Pedersen

  • 1Roslin Institute, Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, UK. xavier.donadeu@ed.ac.uk

Reproduction in Domestic Animals = Zuchthygiene
|July 25, 2008
PubMed
Summary
This summary is machine-generated.

The mare

More Related Videos

Isolation of Small Preantral Follicles from the Bovine Ovary Using a Combination of Fragmentation, Homogenization, and Serial Filtration
09:11

Isolation of Small Preantral Follicles from the Bovine Ovary Using a Combination of Fragmentation, Homogenization, and Serial Filtration

Published on: September 27, 2022

Separation of Avian Preovulatory Follicle Granulosa and Theca Cell Layers for Downstream Applications
05:04

Separation of Avian Preovulatory Follicle Granulosa and Theca Cell Layers for Downstream Applications

Published on: October 25, 2024

Related Experiment Videos

Last Updated: Jul 3, 2026

Analysis of Chromosome Segregation, Histone Acetylation, and Spindle Morphology in Horse Oocytes
12:11

Analysis of Chromosome Segregation, Histone Acetylation, and Spindle Morphology in Horse Oocytes

Published on: May 11, 2017

Isolation of Small Preantral Follicles from the Bovine Ovary Using a Combination of Fragmentation, Homogenization, and Serial Filtration
09:11

Isolation of Small Preantral Follicles from the Bovine Ovary Using a Combination of Fragmentation, Homogenization, and Serial Filtration

Published on: September 27, 2022

Separation of Avian Preovulatory Follicle Granulosa and Theca Cell Layers for Downstream Applications
05:04

Separation of Avian Preovulatory Follicle Granulosa and Theca Cell Layers for Downstream Applications

Published on: October 25, 2024

Area of Science:

  • Reproductive biology
  • Veterinary science
  • Endocrinology

Background:

  • The mare is a valuable model for studying follicle development in monovular species.
  • Follicular waves, characterized by dominant follicle selection, are key to equine reproduction.
  • Gonadotropins and follicular factors regulate this dynamic process.

Purpose of the Study:

  • To explore the regulation of follicular wave emergence and dominant follicle selection in mares.
  • To understand the physiological variations in equine follicle development.
  • To investigate the role of gonadotropins and follicular factors.

Main Methods:

  • Observational study of equine reproductive cycles.
  • Analysis of hormonal profiles (gonadotropins).
  • Assessment of follicular dynamics and development stages.

Main Results:

  • Follicular wave development in mares is periodic and influenced by various physiological factors.
  • Dominant follicle selection is crucial for ovulation of a fertile oocyte.
  • Variations in gonadotropin levels and follicular sensitivity explain physiological differences.

Conclusions:

  • Equine follicle development is a complex, regulated process influenced by internal and external factors.
  • Understanding these mechanisms is vital for equine reproductive health and management.
  • Hormonal interplay is central to successful follicle maturation and ovulation in mares.