SPERM-EGG INTERACTIONS IN THE SHRIMP RHYNCHOCINETES-TYPUS

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dc.contributor.authorBARROS, C
dc.contributor.authorDUPRE, E
dc.contributor.authorVIVEROS, L
dc.date.accessioned2025-01-21T01:30:27Z
dc.date.available2025-01-21T01:30:27Z
dc.date.issued1986
dc.description.abstractSperm-egg interaction in Rhynchocinetes typus was studied with the phase-contrast and scanning electron microscopes. R. typus spermatozoa present in the vas deferens have the shape of a round-headed nail. After contact with seawater it is possible to observe the unfolding of the rays of stellate arms, giving the spermatozoon the appearance of an inverted umbrella. From the center of the flat face of the umbrella emerges a spike with longitudinal striations. Ovarian eggs and spermatozoa were mixed in vitro by agitating them for two minutes in Millipore-filtered seawater. The first gamete contact was established by the spermatozoa through the tip of the spike, which exerted a lytic action on the egg envelopes. After the rigid spike was completely inside the egg, the rays became aligned parallel to each other and began to enter the eggs. Toward the final stages of ray entry, it was possible to observe fusion of the ray membranes with one another, and later the fusion process continued toward the tip of the radial spines. Concomitantly, the egg surface that surrounds the sperm swelled in a circular fashion and formed a fertilization cone. After the spermatozoa entry was complete, a scarlike mark appeared at the place on the egg surface through which penetration occurred. The whole penetration process was completed within 45-60 minutes.
dc.fuente.origenWOS
dc.identifier.issn0148-7280
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96765
dc.identifier.wosidWOS:A1986C623300007
dc.issue.numero2
dc.language.isoen
dc.pagina.final180
dc.pagina.inicio171
dc.revistaGamete research
dc.rightsacceso restringido
dc.subject.ods14 Life Below Water
dc.subject.ods15 Life on Land
dc.subject.odspa14 Vida submarina
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleSPERM-EGG INTERACTIONS IN THE SHRIMP RHYNCHOCINETES-TYPUS
dc.typeartículo
dc.volumen14
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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