• Veena Tandon

      Articles written in Proceedings – Animal Sciences

    • Topography of nervous system in two pouched paramphistomes

      Nérja Mishra Veena Tandon

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      Using the indigogenic technique for localizing the non-specific esterases, the complete nerve arrangement inFischoederius elongatus andGastrothylax crumenifer, the paramphistome parasites in the rumen of cattle, has been visualized. InF. elongatus, of the three pairs of anterior nerves given off from the cerebral ganglia, two are ventral and one is dorsal in disposition. The nerves running posterior from the cerebral ganglia include two pairs of ventral nerves and one of dorsals. Throughout their course the two ventrals of either side are joined to each other by several loop-like connectives. InG. crumenifer, the overall nerve arrangement is somewhat similar to that inF. elongatus; the connectives joining the posterior ventrals of each side are not loop-like. The course of all the nerves and the innervation to the various parts of the body is traced in both the species.

    • Caryophylliasis in the catfish,Clarias batrachus L.: some histopathological observations

      Reba Chakravarty Veena Tandon

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      The extent of damage to the intestine caused by the caryophyllid cestodes,Lytocestus indicus, Djombangia penetrans, and by multiple infections comprising several species of caryophyllids in the cat fish,Clarias batrachus L. is studied.Djombangia penetrans produced large nodules in the intestinal wall.Lytocestus indicus, being less deeply penetrative, caused ulceration of the affected tissue, with hyperplasia of the muscularis in severe cases of infection. Pathogenicity due to multiple infections was minimu, apparently limited to denudation of the mucosal folds.

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