No Thumbnail Available

Ovulacion inducida e inseminacion artificial del Bagre Negro, Rhamdia sapo

Year of publication 1982

Pages p.29

Author Zoel Varela, D.V.;Fisheries and Aquaculture Management Division

Product type Project

Category Programme / project report

Edition 1

Synopsis (short abstract) Experiments carried out to determine the possibilities and techniques of induced spawning, artificial insemination and incubation of the Bagre Negro (Rhamdia sapo), in order to allow the production of fish seed at an industrial scale, are described. Bagre Negro pituitary extract, corionic gonadotrophin and DOCA were used for induction of ovulation. Ovulation was achieved with the former two, and no response was obtained with DOCA. A maximum of 112,500 eggs per kg were produced in October. It was determined that the latent period is function of the water temperature according to the equation L. Period = 7638,24 × T°C -1,92. The eggs obtained were fertilized by the dry method and incubated in Chase jars, and in plastic mesh baskets suspended in aquaria with flowing water. Larvae showed very low mortality up to the moment of total yolk sac absortion.

Cite this content as:

Varela, Z. May 1982. Ovulacion inducida e inseminacion artificial del Bagre Negro, Rhamdia sapo - Informe tecnico 29. 29 p.

Language Spanish

Also available in:
No results found.

Related items

Showing items related by metadata.

  • No Thumbnail Available
    Project
    Programme / project report
    Reproduccion artificial del Bagre Negro, Rhamdia sapo 1982
    Also available in:
    No results found.
    In this paper techniques developed for artificial reproduction of Bagre Negro (Rhamdia sapo) are described. Corionic gonadotrophin was used for the hormonal induction. The relationship between water temperature and the induction period (latent period) while using artificial insemination (stripping) was verified and is described. For the first time, natural spawning in aquarium was tested and used, with promissing results. The relationship between water temperature and the incubation period w as also established. The highest percentage of positive responses to hormonal induction of the females, was obtained in the month of October. During the study period a decreasing volume of the eggs and consequently of the larvae size at hatching was observed. The relationship between egg and larval size was determined. It is concluded that the developed techniques will allow the production of catfish larvae at a large scale.
  • No Thumbnail Available
    Project
    Programme / project report
    Primeras experiencias de cria de larvas de bagre negro (Rhamdia sapo) en laboratorio 1982
    Also available in:
    No results found.
    In this paper preliminary experiments on local catfish (Rhamdia sapo) fry rearing in laboratory are described. It has been found out that it is possible to use nauplie of Artemia salina and/or homogenized cattle liver as first food. Density levels showed great influence on both growth and survival rate.
  • No Thumbnail Available
    Book (series)
    Manual / guide
    Propagación artificial de peces de aguas templadas: manual para extensionistas. 1981
    Also available in:
    No results found.
    Este manual de propagación artificial de peces de aguas templadas se destina ante todo a los extensionistas y a los centros de capacitación piscícola y por eso se ha concedido especial atención a las ilustraciones. En él se describen los aspectos biológicos básicos de la reproducción de los peces y se presentan las distintas técnicas utilizadas para recoger huevos fertilizados, fertilizar artificialmente los huevos y criar las larvas y alevines obtenidos. Se describen además las instalaciones de incubación y alevinaje y el equipo y herramientas de trabajo que se necesitan en un centro de dimensiones medias de producción y distribución de semilla de peces y se examinan los diversos métodos de transporte de huevos de peces, larvas, alevines y jaramugos. Se presentan los métodos de extracción y conservación de glándulas pituitarias y se indican las dosis de extracto de pituitaria que han de utilizarse para inducir el desove de varios tipos de peces de aguas templadas. Por último, se descr iben las técnicas empleadas para la propagación artificial de algunas especies de aguas templadas que tienen importancia comercial
Show more

Users also downloaded

Showing related downloaded files
Show more