The influence of three different litters on population dynamics and reproductive biology of Perionyx sansibaricus were studied in artificial soil under laboratory condition for 21 weeks. P. sansibaricus showed highest population density of 11025 m-2 in mango litter culture followed by 10590 m-2 in culture of acacia litter and lowest 10450 m-2 in the culture containing eucalyptus litter. However, growth rate of population was found highest in acacia litter culture ranging from +86.9 to -2.62, followed by eucalyptus litter showing maximum of +81.8 and minimum -2.56 and lowest was observed in mango litter culture (+47.9 to -35.6).The rate of reproduction (J/A) of P. sansibaricus was highest in eucalyptus litter followed by acacia and lowest was observed in mango litter culture. These indicate that mango litter favours the increase in the earthworm’s population whereas eucalyptus helps in enhancing its reproduction rate.
