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Sunday, 25 February 2007

Seasonal Factors Matter to Earthworm Life Cycle

THE LIFE CYCLE OF THE EPIGEIC EARTHWORM, EISENIA FETIDA AS INFLUENCED BY SEASONAL ENVIRONMENTAL FACTORS

Summary

2006

By Pulikeshi M.Biradar, Umesh M.S. and Amoji S.D.

Department of P.G.Studies and Research in Zoology, Gulbarga University, Gulbarga –585 106, Karnataka, India

Seasonal abiotic factors play very important role on different aspects of various soil organisms. We have conducted an experiment to know the influence of seasonal environmental factors such as room temperature (RT) and percent relative humidity (%RH) etc on the life cycle of the epigeic earthworm, Eisenia fetida in semiarid region of peninsular India.  One week old hatchlings of Eisenia fetida were cultured (in triplicate) on cattle manure at room environmental conditions with sufficient moisture (70-75%) and food with the onset of summer (February-May), monsoon (June-September) and winter (October- January) seasons prevailing in this region. Observation were made with respect to all life activities such as growth, attainment of sexual maturity, commencement of cocoon production, cocoon weight, incubation period, percent hatching and number of hatchling per cocoon to find out the influence of prevailing seasonal environmental factors on the life activities of this worm. Results revealed that overall life activities of the epigeic earthworm, Eisenia fetida were significantly more during winter followed by monsoon season. Least activities of this worm was observed during summer season. Vermiculture and vermifarming with Eisenia fetida could be undertaken effectively during winter and monsoon seasons in semiarid region of peninsular India.

 

Last Updated ( Sunday, 25 February 2007 )
 
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