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Morphometry of the human sperm

JJ Garde se. This article has been cited by other articles in PMC. Abstract The spermatozoon is the most diverse cell type known and this diversity is considered to reflect differences in sperm function. How the diversity in sperm morphology arose during speciation and what role the different specializations play in sperm function, however, remain incompletely characterized. This work reviews the hypotheses proposed to explain sperm morphological evolution, with a focus on some aspects of sperm morphometric evaluation; the ability of morphometrics to predict sperm cryoresistance and male fertility is also discussed.

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A staining technique should cause as little change to sperm dimensions and form as possible in order to reliably evaluate the morphometric features of the sperm. Various staining techniques have been employed, but only a few have been recommended by the World Health Organization and are amenable to automated sperm morphometry analysis. Head dimensions of fresh spermatozoa were measured with a digital calliper on a computer screen.

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The evaluation of male fertility potential is based on the assessment of physical semen characteristics appearance, liquefaction, volume, pH, viscosity and standard semen variables sperm concentration, pro- gressive sperm motility and sperm morphology. All rights reserved. For Permissions, please email: journals.

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Digital images of the sperm nucleus, acrosome, and whole sperm head were captured and analyzed. However, for the other morphometric parameters length, width, and perimeter , there were differences in the relationships between species for sperm nuclei and whole sperm heads. Bull sperm acrosomes were clearly smaller than those in the other species studied and covered a smaller proportion of the sperm head.

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Int J Androl. Morphometric analysis of human sperm morphology. Fourteen morphological forms of human spermatozoa were analysed morphometrically using semi-automated image analysis techniques. Five basic area, perimeter, length, width and mass and five derived ratio, length minus width, ellipticity, form and total mass parameters were considered.

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