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Digestion by trypsin enhances assessment of sperm parameters in the black-handed spider monkey (Ateles geoffroyi)

dc.creatorHernández-López, Leonor
dc.creatorCerezo Parra, Gerardo
dc.creatorCerda-Molina, Ana Lilia
dc.creatorPérez-Bolaños, Stephanella C.
dc.creatorMondragón-Ceballos, Ricardo
dc.date.accessioned2017-06-29T04:27:58Z
dc.date.available2017-06-29T04:27:58Z
dc.date.issued2002es_ES
dc.identifier366es_ES
dc.identifier.issn0023-6861es_ES
dc.identifier.urihttp://www.brown.edu/Research/Primate/lpn41-3.html#spideres_ES
dc.identifier.urihttp://repositorio.inprf.gob.mx/handle/123456789/5057
dc.language.isoenges_ES
dc.relation41 (3) 4-6 p.es_ES
dc.relationversión del editores_ES
dc.rightsacceso cerradoes_ES
dc.titleDigestion by trypsin enhances assessment of sperm parameters in the black-handed spider monkey (Ateles geoffroyi)es_ES
dc.typearticlees_ES
dc.contributor.affiliationInstituto Nacional de Psiquiatría Ramón de la Fuente, Subdirección Neurociencias, Calzada México-Xochimilco 101, Col. San Lorenzo Huipulco, Tlalpan 14370, México, D.F., Méxicoes_ES
dc.contributor.emailleonorh@hotmail.comes_ES
dc.relation.jnabreviadoLABORATORY PRIMATE NEWSLETTERes_ES
dc.relation.journalLaboratory Primate Newsletteres_ES
dc.identifier.placeEstados Unidoses_ES
dc.date.published2002es_ES
dc.identifier.organizacionInstituto Nacional de Psiquiatría Ramón de la Fuente Muñizes_ES
dc.description.monthJules_ES
dc.description.abstractotrodiomaIn many nonhuman primate species, including the black-handed spider monkey (Ateles geoffroyi), sperm coagulates almost entirely shortly after ejaculation. (For a list of species in which this coagulation occurs, see Dixson, 1998; for A. geoffroyi: Goodman & Wislocki, 1935; Long et al., 1997; Hernández-López et al., 2002.) This relatively large and nearly solid clot presumably acts as a physical barrier that impedes or obstructs impregnation by other males. Another theory views the coagulum as a tightly packed sperm reservoir (Dixson, 1998, p. 236). In some species the coagulum is mainly composed of seminal plasma proteins (semenogelin I, semenogelin II, beta-microseminoprotein, etc.) and sugars (fructose) (Lundwall, 1998; Dixson, 1998). Moreover, in species such as cotton-top tamarins (Saguinus oedipus), baboons (Papio cynocephalus), rhesus monkeys (Macaca mulatta), and marmosets (Callithrix jacchus), the genes that code for the proteins that form the seminal plasma as well as the coagulum are known (Marjaana, et al., 1999). In practice, the presence of the coagulum hinders assessment of sperm parameters. Analysis of the liquid portion yields poor sperm counts compared to species which are related or of equivalent body size (see Long et al., 1997); this makes interspecies comparisons, medical evaluations, and assessment of sperm quality in assisted reproduction techniques all difficultes_ES


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