Copulatory Plug
Copulatory Plug - Related Videos
01:22
Formation of the Platelet Plug
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2024
The platelet phase, the second stage of hemostasis, commences around 15-20 seconds after an injury. It follows and overlaps with the vascular phase, during which blood vessels constrict to minimize blood loss. As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
08:16
In Vivo Study of Human Endothelial-Pericyte Interaction Using the Matrix Gel Plug Assay in Mouse
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Cited by 11 •
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We present a protocol to study human endothelial-pericyte interactions in mouse using a variation of the matrix gel plug angiogenesis assay.
07:03
Bilayer Microfluidic Device for Combinatorial Plug Production
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2023
The fabrication of a polydimethylsiloxane (PDMS)-based bilayer device for the production of combinatorial libraries in water-in-oil emulsions (plugs) is presented here. The necessary hardware and software required to automate plug production are detailed in the protocol, and the production of a quantitative library of fluorescent plugs is also demonstrated.
09:03
Modified In Vivo Matrix Gel Plug Assay for Angiogenesis Studies
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2023
The method presented here can evaluate the effect of reagents on angiogenesis or vascular permeability in vivo without staining. The method uses dextran-FITC injection via the tail vein to visualize neo-vessels or vascular leakage.
06:57
The WinCF Model - An Inexpensive and Tractable Microcosm of a Mucus Plugged Bronchiole to Study the Microbiology of Lung Infections
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Cited by 11 •
2017
The mucus plugged airways of cystic fibrosis (CF) patients are an ideal environment for microbial pathogens to thrive. The manuscript describes a novel method for studying the CF lung microbiome in an environment that mimics where they cause disease and how alterations of chemical conditions can drive microbial dynamics.
FAQs
Formation occurs when seminal proteins and other components of the ejaculate solidify inside the female reproductive tract after mating. This change from fluid to a coagulated mass creates a localized structure whose effects depend on its position within the tract. Studying this process helps explain how ejaculate composition can influence sperm movement and reproductive outcomes.
Its physical presence may retain sperm within the female reproductive tract while also creating a barrier to material introduced during later matings. These effects can change how sperm are positioned or transported before fertilization. Consequently, the plug provides a mechanism linking events immediately after mating with differences in fertilization success and reproductive success.
A plug may limit subsequent mating or reduce the movement of sperm from later matings into the reproductive tract. In that way, it can alter the conditions under which sperm from different males compete for fertilization. Researchers examine this mechanism to connect mating order, reproductive secretions, and postcopulatory competition without treating mating behavior alone as the determining factor.
The outcome depends on how the coagulated material interacts with the female reproductive tract, sperm transport, and subsequent mating events. Ejaculate components help determine plug formation, while reproductive anatomy and behavior shape its possible effects. Examining these factors together is important because the same structure can influence fertilization, mating access, or sperm competition through different pathways.
Researchers can record the presence of a plug as evidence that mating occurred recently, particularly in studies of rodents and other animals. This observation provides a reproductive history marker that can be compared with mating behavior, anatomy, or later offspring production. It supports analyses of when mating occurred without relying only on direct behavioral observation.
Studies of these structures address how mating systems, sexual selection, sperm transport, and postcopulatory competition shape reproductive success. Researchers can relate plug presence to reproductive anatomy and behavior, then examine consequences for fertilization or offspring production. This makes the topic useful for connecting physical changes after mating with broader patterns of animal reproduction.