Ceballos Vázquez, B.P., D.P., Carreño-León, S., Payén-Román, A., Monge-Quevedo & M.G., Martínez-Morales (2024). Biometric, biochemical and physiological characterization of the pacific pygmy octopus Paroctopus digueti under controlled conditions . Aqua 2024. Dinamarca, agosto 26 - 30, 2024, 192.
Bertha Patricia Ceballos Vázquez 1, Diana Patricia Carreño-León 2, Samantha Payén-Román 3, Armando Monge-Quevedo 2 y María Guadalupe Martínez-Morales
Its lifecycle is short (6 months), with direct development, produces up to 300 6-8 mmlong eggs sheltered by the female until hatching. These characteristics make P.digueti an ideal candidate for culture as a research model.
The presentstudy establishes baseline values of metabolism, biometric and biochemicalparameters of P. digueti, which allow determining the optimal conditionsfor development and growth in a short time.
Standardmetabolic rate was determined through a closed respirometry system under normalconditions of temperature (26°C) and salinity (38 ups) in three size ranges(15-24 g, 25-33 g, > 34 g). Biometric measurements were taken at the beginningand end of the trial, tissue samples were taken for biochemical analysis(-80°C). Growth was evaluated for a period of 38 days.
The overallmean value of the standard metabolic rate (SMR) was 0.068+0.04 mg O2 g-1h-1indicative of efficient metabolism, and this showed an inverse relationshipwith octopus’ size (Fig. 1).
Allmorphophysiological variables indicated a good physiological state (Table 1)and can be considered a baseline of healthy octopuses.
Totalprotein is the major tissue component (80%), followed by lipids (14%) andcarbohydrates (6%).
Informationon physiological behavior is still incipient for this species but this work isa good approach.
Palabras clave: Octopus; Growth; standar metabolic rate
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