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      Permanent link:
      https://www.ias.ac.in/article/fulltext/anml/095/05/0549-0555

    • Keywords

       

      Mansonia ; larval density; physico-chemical factors

    • Abstract

       

      A year round study was conducted in Trivandrum city during the period of March 1984 to February 1985 to elucidate the relation between certain physico-chemical factors and seasonal density ofMansonia larvae (Culicidae: Diptera).Mansonia uniformis was found to be the predominant species during this period, whereasMansonia annulifera was less than 10% of the totalMansonia collected. The period of high prevalence was found to be January–March. Out of the 6 physico-chemical factors studied Na+, K+, and pH showed statistically significant correlation with the larval density, while Ca++, Mg++ and rainfall showed no significant relation.

    • Author Affiliations

       

      P S Sasikumar1 Prema Suryanarayanan2 Cheriyan Thomas1 K Kalyanaraman3 R S Prasad1

      1. Department of Zoology, University of Kerala, Kariavattom, Trivandrum - 695 581, India
      2. Department of Geology, University of Kerala, Kariavattom, Trivandrum - 695 581, India
      3. Department of Statistics, University of Kerala, Kariavattom, Trivandrum - 695 581, India
    • Dates

       
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