Effect Of Multiple Mating On Reproductive Rate In Threepopular Races Of Silkworm Bombyx Mori L.

P.  J. Raju,; Mahadevappa   ,; Devendra  Guruswamy,; Ramanan  Raghuraman,; S.  B. Dandin,

Effect Of Multiple Mating On Reproductive Rate In Threepopular Races Of Silkworm Bombyx Mori L.

P. J. Raju | Mahadevappa | Devendra Guruswamy | Ramanan Raghuraman | S. B. Dandin

Abstract:

Economics of egg production is vital for grainages since it is a commercial preposition which necessitates recovery of maximum number oflayings with high fecundity. Attempts have been made to increase reproductive rate by multiple mating in Pure Mysore (PM), a multivoltine race and Kalimpong-A (KA) and N4D2,the bivoltine races of silkworm Bombyx mori L. The studies revealed increase in egg laying coefficient for multiple-mated moths of all three races. The possible mechanism in multiple mating which stimulates oogenesis and thereby reproductive rate is discussed.

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