Spermatozoa Tracking
Spermatozoa Tracking - Related Videos
09:30
Phosphopeptide Analysis of Rodent Epididymal Spermatozoa
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Cited by 26 •
2014
Proteomic analysis of any cell type is highly dependent on both purity and pre-fractionation of the starting material in order to de-complexify the sample prior to liquid chromatography mass spectrometry (MS). By using back-flushing techniques, pure spermatozoa can be obtained from rodents. Following digestion, phosphopeptides can be enriched using TiO2.
06:41
A Technique for Percutaneous Epididymal Spermatozoa Aspiration and Processing
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2026
Source:Li Xiaoming1, Liu Xiao1, Li Haiyang1, Cai Xiaohua1, Ou Jianping11Center for Reproductive Medicine, The Third Affiliated Hospital of Sun Yat-sen University.This video demonstrates the percutaneous aspiration of epididymal spermatozoa from a patient with azoospermia, a condition characterized by the absence of spermatozoa in the semen. The procedure involves disinfecting the scrotal area, aspirating epididymal fluid using a syringe with a specialized culture solution and processing the...
10:24
Evaluation of Intracellular Location of Reactive Oxygen Species in Solea Senegalensis Spermatozoa
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Cited by 8 •
2018
This protocol describes a detailed methodology for detecting H2O2 localization within Solea senegalensis spermatozoa using a sensitive fluorochrome DCFH-DA for ROS, a live mitochondria stain for mitochondria, and DAPI for nuclei visualization, respectively. The protocol is designed to be performed within 2 h with either fresh or thawed spermatozoa.
11:42
Bottlenose Dolphin (Tursiops truncatus) Spermatozoa: Collection, Cryopreservation, and Heterologous In Vitro Fertilization
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Cited by 8 •
2017
Here, we present protocols that have been successfully used for dolphin spermatozoa collection, cryopreservation, and heterologous IVF performance using bovine oocytes.
05:55
Multiple Object Tracking
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2023
Source: Laboratory of Jonathan Flombaum—Johns Hopkins University In a staggeringly complex and engaging world, it is crucial to selectively process some stimuli at the expense of others. Experimental psychologists call this ability attention. Specifically, visual attention refers to the ability to selectively process aspects of a visual scene. Many paradigms used to study visual attention involve brief, punctuated, and repeated trials. However, everyday situations often place sustained demands...
FAQs
Speed describes how quickly a spermatozoon moves, while directionality indicates how consistently its path follows a particular orientation. Persistence captures how long that movement pattern is maintained, and changes in these measures can reveal altered behavior under defined conditions. Together, the metrics provide a more detailed assessment than a single motility value.
Image-analysis methods identify spermatozoa in successive video frames and connect their positions over time. This reconstruction produces an individual trajectory rather than only a population-level impression of movement. Researchers can then compare cells according to speed, directionality, persistence, or behavioral changes, helping distinguish heterogeneous movement patterns within the same sample.
A spermatozoon may move rapidly without maintaining a consistent direction, so speed alone does not fully describe its behavior. Directionality indicates the organization of the path, whereas persistence reflects how long that pattern continues. Evaluating both measures helps researchers determine whether movement is sustained and oriented, which is relevant to studies of chemotaxis and fertilization.
Cell counts describe how many spermatozoa are present, but they do not show how those cells move. Tracking adds behavioral measurements, including speed, directionality, persistence, and movement changes under defined conditions. This distinction allows researchers to identify functional differences in motility even when samples have similar numbers of cells.
A typical workflow begins by observing spermatozoa in a fluid or biological environment with video microscopy. Successive images provide the positions needed for analysis, after which image-analysis methods identify individual cells and reconstruct their trajectories. Researchers calculate movement measures and compare them across defined conditions, environmental factors, treatments, or reproductive outcomes.
The approach is useful when researchers need to examine sperm function rather than abundance alone. In biology, it supports investigations of chemotaxis, fertilization, and interactions with reproductive tissues. Tracking can show how movement changes in different environments or after treatments, providing quantitative evidence for comparing conditions linked to reproductive behavior.
Movement patterns can provide functional information that cell counts alone cannot supply. By measuring speed, directionality, persistence, and behavioral changes, researchers can compare sperm samples in relation to treatments, environmental factors, or reproductive outcomes. These measurements help reveal motility characteristics that may be relevant when evaluating sperm function and fertility.