Effect of two temperatures on yield and increase in cranial skeletal abnormalities during early development of palm ruff, Seriolella violacea (Guichenot 1848)
Abstract:
The present study evaluates the effect of two temperatures, 14°C (T14) and 18°C (T18), on yield and the presence of cranial abnormalities during early development in north palm ruff (Seriolella violacea). Different time indices – days post-hatching (DPH), degree-days (D°) and effective degree-days (D°eff) – were used to analyse growth during cultivation. Several ontogenetic events were achieved in less time during cultivation at 18°C. Additionally, a larger total length and final weight, as well as a higher survival rate, were achieved after 80 days of culture at higher temperatures (T18 = 55.5 ± 1.5 mm; 2.87 ± 0.21 g; 1.80 ± 0.18% and T14 = 24.3 ± 2.2 mm; 0.26 ± 0.08 g; 1.33 ± 0.12%). D° and D°eff were valid as independent temperature indices for predicting the growth response of S. violacea against thermal variations. The frequencies of cranial skeletal abnormalities (mouth and opercular complex) were evaluated in the pre-flexion, flexion, post-flexion and juvenile stages. However, the frequency of cranial skeletal abnormalities at the end of this study was not significantly influenced (P > 0.05) by temperature, and values below 21% were recorded in both treatments. These results can be of practical use for optimizing culture conditions to maximize the yield and quality of S. violacea juveniles.
Año de publicación:
2017
Keywords:
- Seriolella violacea
- cranial abnormalities
- TEMPERATURE
- growth
Fuente:


Tipo de documento:
Article
Estado:
Acceso abierto
Áreas de conocimiento:
- Biología del desarrollo
- Ecología
Áreas temáticas de Dewey:
- Temas específicos de historia natural de los animales
- Vertebrados de sangre fría
- Mammalia

Objetivos de Desarrollo Sostenible:
- ODS 14: Vida submarina
- ODS 13: Acción por el clima
- ODS 2: Hambre cero
