Wednesday, February 3, 2010

Size and temperature dependent Oxygen consumption of Macrobrachium americanum Bate, 1868, a prawn with potential for aquaculture

Marcelo Garcia-Guerrero
Acuacultura de crustCIIDIR-IPN Unidad Oaxaca. Calle Hornos No.1003C.P. 71230, Santa Cruz Xoxocotlan, Oaxaca, P. O. Box 674 y 608, Oaxaca, OAX, MEXICO The average oxygen consumption of prawns of four different sizes were measured at the temperatures of 18, 20, 22, 24, 26, 28 and 30using a continuous flow recording respirometer chamber connected with an oxygen electrode. Respiration was described by slope rates of oxygen depletion over time of different prawn sizes or water temperature, by regression analysis. The resulting slopes that represent the oxygen consumption at each temperature at the same size were compared by analysis of variance (ANCOVA). Differences of consumption depending on size and temperature are presented and discussed

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