¿Qué sabemos realmente sobre el apareamiento de los onicóforos?
Fecha
2019
Autores
Monge-Nájera, Julián
Barquero-González, Pablo
Morera, Bernal
Título de la revista
ISSN de la revista
Título del volumen
Editor
Universidad de Costa Rica (Costa Rica)
Resumen
Tras más de un siglo de estudio y a pesar de que hay más de 200 especies de onicóforos, solamente contamos con tres observaciones del apareamiento en sí. La inseminación se puede dar cuando el macho insemina vaginalmente o a través dela piel cuando los machos simplemente colocan su apertura genital contra la vulva y depositan el espermatóforo. En el caso particular de los onicóforos australianos, existe una estructura especializada en la cabeza el macho y éste recoge su propio espermatóforo que sirve de tapón vaginal probablemente para evitar que otros machos la inseminen.
After more than a century of studying a phylum that has over 200 species, we only have three reports of the mating itself. Insemination can occur vaginally or through the skin, and it is suspected that the male simply places its genital opening against the vulva and inserts the spermatophore. However, in the particular case of a few Australian onychophorans, males insert it with a specialized head structure, and the spermatophore also serves as a vaginal plug, preventing insemination by other males.
After more than a century of studying a phylum that has over 200 species, we only have three reports of the mating itself. Insemination can occur vaginally or through the skin, and it is suspected that the male simply places its genital opening against the vulva and inserts the spermatophore. However, in the particular case of a few Australian onychophorans, males insert it with a specialized head structure, and the spermatophore also serves as a vaginal plug, preventing insemination by other males.
Descripción
Palabras clave
ESPERMATOZOOS, ESPERMATÓFORO, APERTURA GENITAL, VAGINAL OR SKIN INSEMINATION, FERTILIZATION BY UNDESIRABLE MALES, REPRODUCCIÓN ANIMAL, ONICÓFOROS, ONYCHOPHORA