Chanchal A K, Pandey B N
Endokrinologie. 1979;74(3):297-303.
The present investigation deals with the effect of gonadal steroids on the oxygen consumption (through gills only) in an air breathing fish, Anabas testudineus (Bloch). A good correlation (P less than 0.05) has been established between the seasonal variations in VO2 and cyclic changes in the activity of gonads in both the sexes. Oxygen consumption in both the sexes of A. testudineus were studied for a period of fourteen months. VO2 of male Anabas remained higher as compared to female throughout the period of investigation. Statistical as well as experimental analysis of the data also indicates that the "male hormones" are much more effective in bringing about the homeostasis of oxidative metabolism as compared to "female hormone" in this fish. The treatment with testosterone brings about significant (P less than 0.001) increase in VO2 in males though the lower dose proved to be most effective. Most of the "female hormones" (progesterone, Duogynon forte and Ovocyclin) used in the present investigation seem to decrease the VO2 significantly in females. The decrease in VO2 was more pronounced at higher dosage. Two peaks of VO2--first in June/July and second in October--have also been observed in this fish. The reason for and mechanism of such change are discussed in the present investigation.
本研究探讨了性腺类固醇对一种空气呼吸鱼类——龟壳攀鲈（布洛赫）仅通过鳃进行的氧气消耗的影响。在两性中，耗氧量（VO2）的季节性变化与性腺活动的周期性变化之间建立了良好的相关性（P小于0.05）。对龟壳攀鲈两性的氧气消耗进行了为期14个月的研究。在整个研究期间，雄性龟壳攀鲈的VO2始终高于雌性。数据的统计分析和实验分析还表明，在这种鱼类中，“雄性激素”在实现氧化代谢的稳态方面比“雌性激素”更有效。睾酮处理使雄性VO2显著增加（P小于0.001），尽管较低剂量被证明是最有效的。本研究中使用的大多数“雌性激素”（孕酮、复方炔诺酮和孕马雌酮）似乎会使雌性VO2显著降低。在较高剂量下，VO2的降低更为明显。在这种鱼中还观察到了VO2的两个峰值——第一个在6月/7月，第二个在10月。本研究讨论了这种变化的原因和机制。
