title: Effects of body mass and temperature on routine metabolic rate of juvenile largemouth bronze gudgeon Coreius guichenoti.
abstract: The effects of body mass (M) and temperature (T) on routine metabolic rate (m(R) ) were assessed in the largemouth bronze gudgeon Coreius guichenoti, from Three Gorges Reservoir, Yangtze River, China. The m(R) increased with increasing M by factors (b-value in the equation m(R) = aM(b) ) of 0·843, 0·800, 0·767, 0·788 and 0·822 at 10, 15, 20, 25 and 30° C, respectively. A significant interaction between M and T on m(R) was observed. The variation in the b-value at different T suggests that the b-values were not consistent with the universal allometric exponent 0·75. After controlling for M, the relationship between the normalized standard metabolic rate (m(S), mg O(2) kg(-1) h(-1)) and T was described by an exponential equation: m(S) = 9·89e((0·093T)) . The results indicate that the effects of M on m(R) depend on T. The increased water temperature induced by dam construction on the Yangtze River may cause a marked increase in energy demand by this species, with potential ecological consequences.
authors.affiliation: Key Laboratory of Freshwater Fish Reproduction and Development, Southwest University, Ministry of Education, Chongqing 400715, China. luoguo@swu.edu.cn
authors.forename: Y P
authors.initials: YP
authors.lastname: Luo
authors.forename: Q Q
authors.initials: QQ
authors.lastname: Wang
mesh_terms: D000818:Animals; D049628:Body Size / Q000502:physiology*; D003530:Cyprinidae / Q000033:anatomy & histology* / Q000378:metabolism*; D004734:Energy Metabolism; D013696:Temperature