Differential distribution of sperm subpopulations and incidence of pleiomorphisms in ejaculates of captive howling monkeys (Alouatta caraya)

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorValle, R. R.
dc.creatorCarvalho, F. M.
dc.creatorMuniz, J. A. P. C.
dc.creatorLeal, C. L. V.
dc.creatorGarcia-Herreros, M.
dc.date2014-12-03T13:08:54Z
dc.date2016-10-25T20:09:30Z
dc.date2014-12-03T13:08:54Z
dc.date2016-10-25T20:09:30Z
dc.date2013-10-01
dc.date.accessioned2017-04-06T06:15:30Z
dc.date.available2017-04-06T06:15:30Z
dc.identifierNaturwissenschaften. New York: Springer, v. 100, n. 10, p. 923-933, 2013.
dc.identifier0028-1042
dc.identifierhttp://hdl.handle.net/11449/111691
dc.identifierhttp://acervodigital.unesp.br/handle/11449/111691
dc.identifier10.1007/s00114-013-1092-8
dc.identifierWOS:000328127700003
dc.identifierhttp://dx.doi.org/10.1007/s00114-013-1092-8
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/922465
dc.descriptionThe aim of this study was to develop an objective method to determine the incidence of pleiomorphisms and its influence on the distribution of sperm morphometric subpopulations in ejaculates of howling monkeys (Alouatta caraya) by using a combination of computerized analysis system (ASMA) and principal component analysis (PCA) methods. Ejaculates were collected by electroejaculation methods on a regular basis from five individuals maintained under identical captive environmental, nutritional, and management conditions. Each sperm head was measured for dimensional parameters (Area [A, (square micrometers)], Perimeter [P, (micrometers)], Length [L, (micrometers)], and Width [W, (micrometers)]) and shape-derived parameters (Ellipticity [(L/W)], Elongation [(L - W)/(L + W)], and Rugosity [(4 pi A/P-2)]). PCA revealed two principal components explaining more than the 96 % of the variance. Clustering methods and discriminant analyzes were performed and seven separate subpopulations were identified. There were differences (P < 0.001) in the distribution of the seven subpopulations as well as in the incidence of abnormal pleiomorphisms (58.6 %, 49.8 %, 35.1 %, 66.4 %, and 55.1 %, P < 0.05) among the five donors tested. Our results indicated that differences among individuals related to the incidence of pleiomorphisms, and sperm subpopulational structure was not related to the captivity conditions or the sperm collection method, since all individuals were studied under identical conditions. In conclusion, the combination of ASMA and PCA is a useful clinical diagnostic resource for detecting deficiencies in sperm morphology and sperm subpopulations in A. caraya ejaculates that could be used in ex situ conservation programs of threatened species in Alouatta genus or even other endangered neotropical primate species.
dc.languageeng
dc.publisherSpringer
dc.relationNaturwissenschaften
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectSperm morphometry
dc.subjectPrincipal component analysis
dc.subjectSperm subpopulations
dc.subjectSperm pleiomorphisms
dc.subjectCaptive management
dc.subjectAlouatta caraya
dc.titleDifferential distribution of sperm subpopulations and incidence of pleiomorphisms in ejaculates of captive howling monkeys (Alouatta caraya)
dc.typeOtro


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