• M S M Christopher

      Articles written in Proceedings – Animal Sciences

    • Utilization of dietary protein, fat and carbohydrate by the paddy field fish (Macropodus cupanus: Anabantidae)

      S Mathavan M S M Christopher

      More Details Abstract Fulltext PDF

      Preferential utilization of protein, fat and carbohydrate by different weight classes ofMacropodus cupanus was studied exposing the fish to algal, animal and combined feed. Consumption and conversion of protein and fat was maximum in the liver fed group. At maximum feeding the small fish converted carbohydrate, fat and protein at an efficiency of 9.45, 26.55 and 18.29% respectively. The efficiency of conversion decreased with increasing body weight. At all feeding schedules carbohydrate was converted more or less efficiently. The fish exposed to minimum animal feed or 100% algal feed utilized almost equal amount of stored protein cr fat for maintenance metabolism.

    • Population dynamics of a tropical lepidopteranCatopsilia crocale (Pieridae)

      M S M Christopher S Mathavan

      More Details Abstract Fulltext PDF

      Extensive field observations were undertaken to study the population dynamics of the larvae ofCatopsilia crocale in the Madurai Kamaraj University campus during the years 1980–81 and 1981–82. Though oligophagous,C. crocale adopted ‘monophagic strategy’ for oviposition and larval feeding. Seasonal changes in the nitrogen content of the foodCassia alata leaf influenced the pupal/adult weight and oviposition. Commencement of rain triggered the reproductive activity and continued precipitation facilitated maximum egg deposition. Of total egg production in a year, about 80% was oviposited during northeast monsoon (September–December) and the rest during the south-west monsoon (May–August). Egg, I instar, V instar and pupa suffered more mortality than the other life stages. Of the total number of eggs laid, about 1·01% emerged as adult and 98·99% died during the process of larval and pupal development.

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