Induction of ovulation and spawn of yamú, Brycon siebenthale, with mGnRH-a implant

Authors

  • Sandra PARDO-CARRASCO Instituto de Acuicultura, Universidad de dos Llanos, Villavicencio, Meta, Colombia http://orcid.org/0000-0001-5796-9419
  • Héctor SUAREZ-MAHECHA Instituto de Acuicultura, Universidad de dos Llanos, Villavicencio, Meta, Colombia
  • Diego MUÑOZ-LARA Instituto de Acuicultura, Universidad de dos Llanos, Villavicencio, Meta, Colombia
  • José ARIAS-CASTELLANOS Instituto de Acuicultura, Universidad de dos Llanos, Villavicencio, Meta, Colombia
  • Hernando GIL Instituto de Acuicultura, Universidad de dos Llanos, Villavicencio, Meta, Colombia

Keywords:

Brycon, hormone implant, induced reproduction, mGnRH-a

Abstract

Three treatments with mGnRH-a were used to induce the ovulation and the spawning of yamú (Brycon siebenthalae) and were compared with a treatment using carp pituitary extract - CPE. The application vehicle of the mGnRH-a employed was cholesterol (75%) and cellulose (25%). The CPE was administered by intramuscular via and previous verification of the gonadal maturation state of the females was made by means of ovarian biopsy and presence of semen in the males. The effectiveness of the treatments was determined with the occurrence or not of the spawn, number of liberated eggs, fertilization rate and hatchery rate. Considering the females treated with CPE, 50% spawned and none of those treated with mGnRH-a spawned.

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Published

2018-06-29

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