Descubre y comparte nuestro conocimiento público

Se han encontrado 78 recursos

Resultados de búsqueda

Article

Autor: Magnotti, C. Figueroa Villalobos, Elías Farias, J. G. Merino, O. Valdebenito Isler, Iván Oliveira, R. P. S. Cerqueira, V.

In this article we describe basic aspects of the sperm biology of lebranche mullet (Mugil liza) in the wild and in captivity, in particular assessing the effects of salinity (0, 10, 20, 30, 35, 40, 50 and 60 g L-1) and pH (6, 7, 8, 9 and 10) on sperm motility. Our results indicate that the highes...

Enlace original: http://repositoriodigital.uct.cl/handle/10925/3840

Repositorio Digital Universidad Católica de Temuco
Enlace permanente
Magnotti, C. ,  Figueroa Villalobos, Elías ,  Farias, J. G. ,  Merino, O. ,  Valdebenito Isler, Iván ,  Oliveira, R. P. S. ,  Cerqueira, V. ,  [Sperm characteristics of wild and captive lebranche mullet Mugil liza (Valenciennes, 1836), subjected to sperm activation in different pH and salinity conditions] ,  Sperm characteristics of wild and captive lebranche mullet Mugil liza (Valenciennes, 1836), subjected to sperm activation in different pH and salinity conditions
Article

Autor: Figueroa Villalobos, Elías Farias, J. G. Lee Estevez, M. Valdebenito Isler, Iván Risopatron, J. Magnotti, C. Romero, J. Watanabe, I Oliveira, R. P. S.

The use of alpha-tocopherol and ascorbic acid in freezing medium prevents lipoperoxidation and damage by ROS (reactive oxygen species); however, the effects of these antioxidants in salmonid spermatozoa have not been studied. In this work the protective effects of antioxidants on the enzymatic ac...

Enlace original: http://repositoriodigital.uct.cl/handle/10925/3926

Repositorio Digital Universidad Católica de Temuco
Enlace permanente
Figueroa Villalobos, Elías ,  Farias, J. G. ,  Lee Estevez, M. ,  Valdebenito Isler, Iván ,  Risopatron, J. ,  Magnotti, C. ,  Romero, J. ,  Watanabe, I ,  Oliveira, R. P. S. ,  [Sperm cryopreservation with supplementation of alpha-tocopherol and ascorbic acid in freezing media increase sperm function and fertility rate in Atlantic salmon (Salmo salar)] ,  Sperm cryopreservation with supplementation of alpha-tocopherol and ascorbic acid in freezing media increase sperm function and fertility rate in Atlantic salmon (Salmo salar)
Review

Autor: Vega Aguayo, Rolando Dantagnan Dantagnan, Patricio Mardones Lazcano, Alfonso Valdebenito Isler, Iván Zamorano, Jose Encina Montoya, Francisco

Galaxias maculatus (Jenyns, 1842), is a gourmet fish of great commercial importance with overexploited fisheries. So, studies of its biology are essential in order to develop a technology for its cultivation (galaxiculture), which is at a pilot stage. The goals of this work are: 1) to provide a s...

Enlace original: http://repositoriodigital.uct.cl/handle/10925/2565

Repositorio Digital Universidad Católica de Temuco
Enlace permanente
Vega Aguayo, Rolando ,  Dantagnan Dantagnan, Patricio ,  Mardones Lazcano, Alfonso ,  Valdebenito Isler, Iván ,  Zamorano, Jose ,  Encina Montoya, Francisco ,  [Biological bases for whitebait culture Galaxias maculatus (Jenyns, 1842): a review] ,  Biological bases for whitebait culture Galaxias maculatus (Jenyns, 1842): a review

Autor: Valdebenito Isler, Iván Moreno, C. Lozano, C. Ubilla Madrid, Andrea

P>In terms of fish production, sperm activating substances are important in the controlled insemination. This holds also for salmonids, when being provided with an agent that energizes the spermatozoa. In this study two amino acids (l-glutamate and glycine) were evaluated in their effect on sperm...

Enlace original: http://repositoriodigital.uct.cl/handle/10925/2633

Repositorio Digital Universidad Católica de Temuco
Enlace permanente
Valdebenito Isler, Iván ,  Moreno, C. ,  Lozano, C. ,  Ubilla Madrid, Andrea ,  [Effect of L-glutamate and glycine incorporated in activation media, on sperm motility and fertilization rate of rainbow trout (Oncorhynchus mykiss) spermatozoa] ,  Effect of L-glutamate and glycine incorporated in activation media, on sperm motility and fertilization rate of rainbow trout (Oncorhynchus mykiss) spermatozoa
Article

Autor: Effer Roldan, Brian Sanchez, Ruben R. Ubilla Madrid, Andrea Figueroa Villalobos, Elías Valdebenito Isler, Iván

For Salmo salar, there is a lack of information on the morphology of the first blastomeres formed during embryonic development and which could be used as a diagnostic tool for the first stages of development. The purpose of this investigation, therefore, was to characterize morphometrically the f...

Enlace original: http://repositoriodigital.uct.cl/handle/10925/2649

Repositorio Digital Universidad Católica de Temuco
Enlace permanente
Effer Roldan, Brian ,  Sanchez, Ruben R. ,  Ubilla Madrid, Andrea ,  Figueroa Villalobos, Elías ,  Valdebenito Isler, Iván ,  [Morphometric of blastomeres in Salmo salar] ,  Morphometric of blastomeres in Salmo salar
Review

Autor: Valdebenito Isler, Iván Paiva, L. Berland Olea, Marco

Many fish species with economic importance have been heavily exploited, causing the collapse of their fisheries. For this reason, there have been attempts to cultivate fish species for commercial purposes, resulting in varying success. It has been observed that when some species are kept in capti...

Enlace original: http://repositoriodigital.uct.cl/handle/10925/2650

Repositorio Digital Universidad Católica de Temuco
Enlace permanente
Valdebenito Isler, Iván ,  Paiva, L. ,  Berland Olea, Marco ,  [Follicular atresia in teleost fish: a review] ,  Follicular atresia in teleost fish: a review
Review

Autor: Valdebenito Isler, Iván Fletcher, C. Vera, V. Fernandez, J.

In most teleost fish with external fertilization, the spermatozoids are immobile in the seminal fluid and they are activated only after making contact with all aqueous medium. The time of flagellar movement is short in most species. Furthermore, the factors that trigger this process are different...

Enlace original: http://repositoriodigital.uct.cl/handle/10925/2717

Repositorio Digital Universidad Católica de Temuco
Enlace permanente
Valdebenito Isler, Iván ,  Fletcher, C. ,  Vera, V. ,  Fernandez, J. ,  [Physical-chemical factors that regulate spermatic motility in fish: basic and applied aspects. A review] ,  Physical-chemical factors that regulate spermatic motility in fish: basic and applied aspects. A review
Review

Autor: Valdebenito Isler, Iván

The present literature review analyzes the current state of artificial control of sexual maturity in fish culture using hormone therapy, evaluating the advantages and disadvantages of different technological strategies available. The discussion covers from the first successful attempt conducted b...

Enlace original: http://repositoriodigital.uct.cl/handle/10925/2827

Repositorio Digital Universidad Católica de Temuco
Enlace permanente
Valdebenito Isler, Iván ,  [Hormone therapy for the artificial control of sexual maturity in fish culture: a review] ,  Hormone therapy for the artificial control of sexual maturity in fish culture: a review
Article

Autor: Peredo, S Parada, E Valdebenito Isler, Iván Peredo, M
Enlace original: http://repositoriodigital.uct.cl/handle/10925/2901

Repositorio Digital Universidad Católica de Temuco
Enlace permanente
Peredo, S ,  Parada, E ,  Valdebenito Isler, Iván ,  Peredo, M ,  [Relocation of the freshwater mussel Diplodon chilensis (Hyriidae) as a strategy for its conservation and management] ,  Relocation of the freshwater mussel Diplodon chilensis (Hyriidae) as a strategy for its conservation and management
Article

Autor: Jara-Seguel, Pedro Ubilla Madrid, Andrea Estrada, Juan Ramirez, Diego Valdebenito Isler, Iván

Studies about nuclear DNA content in the genus Genypterus are scarce, and the present study gives the first estimate of nuclear DNA content of Genypterus chilensis, with a value of 2C= 1.0 +/- 0.06 pg, value close to that obtained for other Ophidiidae species wich range between 1.2 and 1.68 pg.

Enlace original: http://repositoriodigital.uct.cl/handle/10925/2920

Repositorio Digital Universidad Católica de Temuco
Enlace permanente
Jara-Seguel, Pedro ,  Ubilla Madrid, Andrea ,  Estrada, Juan ,  Ramirez, Diego ,  Valdebenito Isler, Iván ,  [Nuclear DNA content in the red conger eel Genypterus chilensis (Guichenot, 1881) (Actinopterygii: Ophidiidae)] ,  Nuclear DNA content in the red conger eel Genypterus chilensis (Guichenot, 1881) (Actinopterygii: Ophidiidae)

Selecciona los documentos para visualizarlos

Nombre del archivo Ver recurso
Marcar todos
Limpiar todo