Efectos de la autofecundación sobre las varianzas aditiva, ambiental y fenotípica, y
sobre el valor de la heredabilidad para el rasgo “longitud de la valva”
en Argopecten purpuratus, utilizando un modelo animal
Author
dc.contributor.author
Toro, J. E.
Author
dc.contributor.author
Montoya, M. P.
Author
dc.contributor.author
Martínez, V.
Admission date
dc.date.accessioned
2018-12-20T14:53:14Z
Available date
dc.date.available
2018-12-20T14:53:14Z
Publication date
dc.date.issued
2009
Cita de ítem
dc.identifier.citation
Arch Med Vet 41, 245-253 (2009)
Identifier
dc.identifier.issn
0301732X
Identifier
dc.identifier.issn
07176201
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/157288
Abstract
dc.description.abstract
The northern scallop, Argopecten purpuratus, is a hermaphrodite species which has a great economic importance in Chile. Recently, hatchery techniques for juvenile production have been developed for this species, which allows the study the potential effects of setting in the aquaculture of this species. In the present study we used selfing data obtained in an experiment to establish their effects on the heritability for shell length, by means of stochastic simulations of fullsib family data. Several families were produced Using it factorial design (7x7), which allowed the statistical analyses of growth and survival of each family, with variable initial selfing percentage. PCR-based molecular markers (RAPD) developed in a previous study allowed the identification of selfing individuals within each family. The results indicate that heritability values were over-estimate in those families with high percentage of selfing. The selfing percentage was estimated at 6, 9 and 12 months of age, observing a significant reduction of it in each of the experimental families. The results obtained lead to conclude that even if the selfing has a negative effect oil the development of the northern scallop, this happens only at individual level, affecting the fitness of the individuals which have been produced under that condition. However, those families produced by crossfertilization. which have variable selfing percentages among them, are not significantly affected, because this percentage is reduced gradually with the age of the individuals; therefore, by the time reproductors are selected in a genetic enhancement program, the effect of selfing will not be significant.
Efectos de la autofecundación sobre las varianzas aditiva, ambiental y fenotípica, y
sobre el valor de la heredabilidad para el rasgo “longitud de la valva”
en Argopecten purpuratus, utilizando un modelo animal
Title in another language
dc.title.alternative
Effects of selfing on the additive, environmental and phenotypic variation and on the heritability
value for “shell length” in Argopecten purpuratus using an animal model