Rousettus leschenaulti is a frugivorous, megachiropteran bat, breeding twice in a year. Histochemical localization of two dehydrogenase, Succinic dehydrogenase (SDH) and Lactate dehydrogenase (LDH) was demonstrated in the corpus luteum of bats obtained during, early, mid and late pregnancy. Differential enzyme activities in corpus luteum were visually evaluated. Reproductive stage specific changes in the profile of the enzymes were observed.
In the early developmental stage of embryo, Both SDH and LDH showed high staining profile in the luteal cells of the corpus luteum. During mid developmental stage, the corpus luteum had moderate SDH and LDH reaction. At the time of luteal regression stage, in the corpus luteum both SDH and LDH profiles were very weak. The intense activity of these enzymes in the early development suggested that the energy requirement was very high at this stage and in the mid and late developmental stage enzyme reaction were moderate to weak, these results suggested that the energy requirement was lowered down after establishment of placenta.
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