Abstract (en):
Relative fecundity in fishes is the estimated number of oocytes of a female during spawning. This aspect was investigated in Grundulus quitoensis topotypic specimens from the "El Voladero", a high Andean lake in Ecuador. Gonad maturation stages (mature and immature) were identified by means of direct observation, subsequently, the relative fertility (FRP) as function of the weight and the total lenght (TL) were calculated.
Abstract (es):
La fecundidad relativa en peces es la estimación de la cantidad de ovocitos de una hembra por desove. Este aspecto se investigó en especímenes topotipos de Grundulus quitoensis de la laguna altoandina El Voladero, Ecuador. Se identificó el estadio de madurez gonadal (maduro e inmaduro) a través de la observación directa, se calculó la fecundidad relativa al peso (FRP) y a la longitud total (LT). Las hembras estudiadas tuvieron en promedio una LT de 63,9 mm. El rango de ovocitos varió entre 75 y 716 por hembra y en total se contaron 5691 ovocitos para 16 hembras. El PT varió entre 0,5 g y 4,7 g; mientras que la LT varió entre 36,7 mm a 63,9 mm. La fecundidad relativa se observó comprendida entre 1,6 y 14,3 ovocitos por mm de LT del animal (X ̅= 6,9 ± 3,6 mm-1) y entre 47,2 y 319,1 ovocitos por g de peso total (X ̅= 148,9 ± 74,9 g-1). Es importante conocer el ciclo de vida e historia natural de una especie, porque contribuyen al conocimiento ecológico de los peces que habitan las lagunas altoandinas, como es el caso del estudio aquí desarrollado en G. quitoensis.
Keywords:
Fecundidad relativa. Ovocitos. Pez neotropical. Peso total. (es)
Neotropical fish, Oocytes, Relative fecundity, Total weight (en)
Neotropical fish, Oocytes, Relative fecundity, Total weight (en)
How to Cite
Valdiviezo-Rivera, J., Terneus, E., Vera, D., & Urbina, A. (2017). Analysis of gonad production of Grundulus quitoensis Román-Valencia, Ruiz-C. & Barriga, 2005(Characiformes: Characidae) in the “El Voladero” high Andean lake, Carchi province, Ecuador. Biota Colombiana, 17(2), 89–97. https://doi.org/10.21068/C2016.v17n02a07
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