Results 41 to 50 of about 154,792 (190)
Asian Journal of Andrology, 2016 This work evaluates sperm head morphometric characteristics in adolescents from 12 to 18 years of age, and the effect of varicocele. Volunteers between 150 and 224 months of age (mean 191, n = 87), who had reached oigarche by 12 years old, were recruited
Fernando Vásquez +4 more
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Animals, 2023 The objective of the present study was to determine the effects that the reproductive season has on the motility, kinematics, morphology, and sperm morphometry of Brahman bulls evaluated with a commercial CASA system.
Ignacio Araya-Zúñiga +6 more
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Proceedings of the Royal Society of London. Series B: Biological Sciences, 1998 Understanding the adaptive significance of sperm form and function has been a challenge to biologists because sperm are highly specialized cells operating at a microscopic level in a complex environment. A fruitful course of investigation has been to use the comparative approach.
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Morphology and head morphometric characters of sperm in Thai native crossbred stallions
Acta Veterinaria Scandinavica, 2008 Background One of the semen quality parameters use to determine fertility is the percentage of sperm that express normal morphology. Sperm head morphometry is also correlated with fertility.
Laikul Aree +3 more
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Feline sperm head morphometry in relation to male pedigree and fertility
Theriogenology, 2023 Computer-assisted sperm morphometry analysis is an advanced tool which allows to precise measure sperm head parameters like length, width, area, and perimeter. On the basis of these and calculated parameters, morphometric subpopulations of spermatozoa can be distinguished.
Sylwia Prochowska +3 more
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Theriogenology WildComputer-aided sperm morphology analysis (CASMA) is quickly becoming the industry standard for objective morphometric analysis of sperm. For efficient and accurate sperm analysis via CASMA, species-specific optimization of fixation and staining ...
Jonathan R. Cowart +5 more
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iMeta, EarlyView.The Human Biomarker Navigator integrates the disease continuum, biomarker dynamics, cross‐organ biomarker networks, biomarker classification, and technology‐driven paradigms. It maps how biomarkers link multi‐system physiology and pathology across the nervous, respiratory, endocrine, circulatory, immune, digestive, urinary, reproductive, and ...
Meng‐Yao Li +29 more
wiley +1 more source
Sperm competition and sperm length in shorebirds [PDF]
, 1999 We investigated how sperm morphology varies across 16 species of shorebirds in the Scolopacidae, Charadriidae, and Jacanidae. Sperm were significantly longer in nonmonogamous than in socially monogamous species.
Briskie, J V, Johnson, D D P
core
Asian Journal of Andrology, 2016 The main aims of this research were to study possible differences in objective morphometric sperm characteristics, establish normative sperm morphometry standards, and evaluate the presumed different subpopulation distribution of avian spermatozoa from ...
Manuel García-Herreros
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Zoo Biology, EarlyView.We describe testicular echobiometry and sperm characterization in oncilla (Leopardus tigrinus) from the Caatinga biome, Ceará, Brazil. ABSTRACT Among neotropical small felids, the Leopardus tigrinus is classified as vulnerable by the International Union for Conservation of Nature, but studies on reproductive morphology and physiology are scarce for ...
Yuri Gonçalves Matos +8 more
wiley +1 more source