• C S K Anand

      Articles written in Proceedings – Animal Sciences

    • Effect of tranquillisers on the reproduction of a freshwater leech,Poecilobdella viridis (Blanchard)

      A Bhasker Rao C S K Anand G K Kulkarni

      More Details Abstract Fulltext PDF

      Effects of two well-known tranquillisers, reserpine and chlorpromazine on the reproduction ofP. viridis were investigated. There was a significant decrease on the ovarian index after reserpine (RSP) injection, whereas, chlorpromazine (CPZ) did not induce any change. But chlorpromazine has a profound effect on the testis index. Surprisingly, injection of the mixture ofRSP+CPZ induced a significant decrease in the ovarian and testis indices. Besides gonad index, the tranquillizer effect on histological profile of gonads was also studied.

    • Blood glucose in a freshwater leech,Poecilobdella viridis (Blanchard): Neuroendocrine regulation

      G K Kulkarni A Bhaskar Rao C S K Anand

      More Details Abstract Fulltext PDF

      Hormonal involvement in the control of blood glucose level ofPoecilobdella viridis was tested by performing debraining, supra- and sub-oesophageal ganglionectomy, followed by injections of the extract of neuroendocrine tissues in operated leeches. Anatomically, the brain ring, through which the oesophagus passes, of this leech is composed of two separate ganglia, the supra-oesophageal and sub-oesophageal, connected to each other by circum-oesophageal connectives. In normal leeches blood glucose level was found to be 10·2 μg%. Removal of complete brain and only the supra-oesophageal portion of the brain produced after 24 h a significant (P<0·01) decrease in the blood glucose concentration. Sub-oesophageal ganglionectomy produced no effect. Injections of brain and supra-oesophageal ganglion extracts into 24 h debrained and supra-oesophageal and sub-oesophageal ganglionectomized leeches increased the blood glucose level significantly, but the injections of sub-oesophageal ganglion homogenates had no effect. These data indicate that supra-oesophageal ganglionic portion of the brain ofPoecilobdella ciridis may be the production site of hyperglycemic hormone.


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