Artículo
Post-spawning feed deprivation effects on testicular and ovarian maturation in the neotropical cichlid fish Cichlasoma dimerus
Pérez Sirkin, Daniela Irina
; Di Yorio, María Paula
; Delgadin, Tomás Horacio
; Honji, Renato Massaaki
; Moreira, Renata Guimarães; Somoza, Gustavo Manuel
; Vissio, Paula Gabriela
Fecha de publicación:
08/2021
Editorial:
Springer
Revista:
Fish Physiology and Biochemistry
ISSN:
0920-1742
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Many teleost fishes can withstand long feed deprivation periods, either due to an eventual lack of food or because of their behavior during reproduction and/or parental care. In this work, the effects of total food restriction on the oogenesis, spermatogenesis, and reproductive hormones of the neotropical cichlid fish Cichlasoma dimerus were studied. Specifically, different pairs were isolated after having a spawning event and were feed-deprived or daily fed for 3 weeks. After that period, gonadal histology, messenger levels of genes related to reproduction (gonadotropin-releasing hormone 1, gonadotropins, and insulin-like growth factor 1) and 11-ketotestosterone plasma levels were evaluated in both groups. Food restriction did not affect the reproductive axis in females since follicular maturation and gene expression showed no differences with respect to controls. However, in males, food restriction showed a stimulatory effect on the reproductive axis, reflected in a greater number of spermatozoa in their seminiferous lobes and spermatic ducts, and in an increase in follicle stimulating hormone messenger expression. Despite the negative effect reported for many fish species, C. dimerus seems to redirect their energy reserves towards gonadal development when faced with to a feed deprivation period.
Palabras clave:
FEED RESTRICTION
,
OOGENESIS
,
REPRODUCTIVE HORMONES
,
SPERMATOGENESIS
,
TELEOST
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Articulos(IBBEA)
Articulos de INSTITUTO DE BIODIVERSIDAD Y BIOLOGIA EXPERIMENTAL Y APLICADA
Articulos de INSTITUTO DE BIODIVERSIDAD Y BIOLOGIA EXPERIMENTAL Y APLICADA
Citación
Pérez Sirkin, Daniela Irina; Di Yorio, María Paula; Delgadin, Tomás Horacio; Honji, Renato Massaaki; Moreira, Renata Guimarães; et al.; Post-spawning feed deprivation effects on testicular and ovarian maturation in the neotropical cichlid fish Cichlasoma dimerus; Springer; Fish Physiology and Biochemistry; 47; 5; 8-2021; 1527-1540
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