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The oxygen consumption rate of a freshwatersub-terrestrial crab, Sudanonautes floweri in relation to different temperatures and pHwas investigated. The average temperatureand pH of the crab\'s peaty stream habitat were 29.5 0 C and 7.5 respectively. The lethal temperatures at pH 7.0 recorded for the species were 14.5 0 C and 34.5 0 C respectively. The oxygen consumption rate (Q) within the temperature range of 210C – 310C increased with temperature but decreased in the zones of temperature stress (≤ 160C and ≥ 310C). There was no significant difference (P>0.05) between weight specific oxygen consumption (QW-1) of the male and female crabs. The oxygen consumption rate was positively correlated with the body weight of the crabs (r = 1.0); but was inversely related to the unit weight of the crab per hour (r = -0.95). The average oxygen consumption of the animal at 30 0C and pH 7.0 was 53.1 μg O2 g-1 h-1. Keywords : Temperature, pH, Oxygen consumption, Sudanonautes floweri Animal Research International Vol. 1 (1) 2004: pp. 16-22

animal research international

Effects of temperature and pH on the oxygen consumption Rate of sudanonautes (&lt;i&gt;Convexonautes aubryi&lt;/i&gt;) floweri (de man) (crustacea: decapoda)