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Rev. peru. biol. (Impr.) ; 22(3)dic. 2015.
Article in Spanish | LILACS-Express | LILACS, LIPECS | ID: biblio-1522418

ABSTRACT

Se determinó el efecto de la temperatura sobre la tasa de aclaramiento (TA), ingestión (TI) y consumo especifico de oxígeno (CEO) en individuos de Argopecten purpuratus (Lamarck, 1891) de distintos grupos de tallas. Las pruebas de TA y TI se realizaron a una concentración de Chaetoceros calcitrans de aproximadamente 1x10(6) cel.mL-1, se evaluaron dos temperaturas 17 y 22°C y se conformaron diferentes grupos de tallas promedio de 7.6 ± 0.265, 4.9 ± 0.058 y 3.7 ± 0.173 cm. En las pruebas de CEO los grupos de tallas promedio fueron 8.1 ± 0.351, 5.6 ± 0.058 y 4.3 ± 0.100 cm. Los resultados muestran un efecto significativo de la temperatura en la TA (L.h-1) y TI (cel.h-1 x 10(5)) sobre los individuos de mayor tamaño (7.6 ± 0.265 cm), observándose a 22°C un incremento promedio, respecto a 17°C, de hasta 250% para TA y 48% para TI. Además, se observó una relación directa del tamaño corporal con las TA y TI en ambas temperaturas. Se registró el efecto de la temperatura de 22°C sobre CEO en todos los grupos evaluados, con un incremento de 239.8, 165.3 y 183.4% para individuos de tallas de 8.1 ± 0.351, 5.6 ± 0.058 y 4.3 ± 0.100 respectivamente. Asimismo, los resultados muestran una relación indirecta del tamaño corporal con la CEO, en ambas temperaturas evaluadas.


The effect of temperature on the clearance rate (CR), ingestion rate (IR) and specific oxygen consumption (SOC) in individuals of Argopecten purpuratus at different size groups were determined. The CR and IR tests were performed at a concentration of approximately 1x10(6) cel.mlL-1 of Chaetoceros calcitrans, two temperatures 17 and 22 °C were evaluated and different groups of average size were formed of 7.6 ± 0.265, and 0.058 ± 4.9 3.7 ± 0.173 cm. In SOC test the average size groups were 8.1 ± 0.351, 0.058 ± 5.6 and 4.3 ± 0.100 cm. The results show a significant effect of temperature in CR (Lh-1) and IR (cel.h-1 x 10(5)) on the larger individuals (7.6 ± 0.265 cm), it was observed at 22 °C an average increase, about 17 °C, up to 250% to CR and 48% to IR. In addition, a direct relationship of body size with CR and IR in both temperatures was observed. The effect of temperature at 22 ° C on SOC in all groups was evaluated, with an increase of 239.8, 165.3 and 183.4% for size individuals of 8.1 ± 0.351, 0.058 ± 5.6 and 4.3 ± 0.100 respectively. Furthermore, in both evaluated temperatures, the results show an indirect relationship of body size with the SOC.

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