portada Water Temperature and Photoperiod (en Inglés)

Water Temperature and Photoperiod (en Inglés)

Formato

Libro Físico

Autor

Lucas Rubén Gon

Editorial

Our Knowledge Publishing

Idioma

Inglés

N° páginas

Encuadernación

Tapa Blanda

Dimensiones

22.9x15.2x0.4 cm

Peso

0.10 kg.

ISBN13

9786207046423

Categorías

Botánica y ciencias de las plantas
Horticultura comercial

Water Temperature and Photoperiod (en Inglés)

Lucas Rubén Gon (Autor) · Our Knowledge Publishing · Tapa Blanda

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Reseña del libro "Water Temperature and Photoperiod (en Inglés)"

The reproductive process in teleost fish is controlled by the hypothalamic-pituitary-gonadal axis, being activated by external factors such as water temperature and photoperiod. However, most fish in captivity do not spawn due to blockages at different levels of the gonadal maturation process, particularly in rheophilic species such as pacu (Piaractus mesopotamicus). In this sense, different procedures are used in order to stimulate the reproductive processes of final oocyte maturation to ensure the production of fry. However, the gonadal maturation of females in captivity generally begins in December, determining that the fattening of juveniles begins in January, thus losing much of the optimal growth temperature of the fry. In order to evaluate the effect of manipulating pond temperature and photoperiod on gonadal development in captive pacu females, four experimental treatments were proposed: T1: (Control), T2: (photoperiod) artificial light, T3: (temperature) greenhouse, and T4: (combined) photoperiod and temperature.