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Email the author (Login required) Wearing and growth of juveniles Graus nigra (Philippi, 1887) under culture conditions
DOI: https://doi.org/10.3856/vol40-issue3-fulltext-7
Abstract
The rocky fish (Graus nigra) commonly named “mulata” is an important resource along the coast of central and northern Chile. Due to great acceptation as fish for human consumption have been intensively fished so as it’s needed develop its production by means of aquaculture techniques. First attempts for culturing this species have given promising results with regard to production of larvae and juvenile fish. In this study results of growth and feeding of hatchery produced juveniles are reported. Fish juveniles were generated using wild brooders by means of application standard techniques of hatchery. Cultivation of juvenile fish was developed in tanks supplied with not filtered seawater and provided with constant aireation. Results related to food consumption regarding to feeding behaviour and feeding frequency are described. Also, quantitative relationships related to growth in a period comprising between 70 and 205 days after hatching are reported. Aspects related with growth indexes and water temperature and the antecedents for establishing criteria for feeding this fish under culture conditions are discussed. In addition the perspective for developing the culture of this species and its scaling-up is examined.
