Predatory Efficiency and Developmental Attributes of Harmonia dimidiata (Fabricius) (Coleoptera:Coccinellidae) in Relation to Prey Density

Jump To References Section

Authors

  • Aphid Research Laboratory, Department of Life Sciences, Manipur University, Canchipur 795 003, Manipur ,IN
  • Aphid Research Laboratory, Department of Life Sciences, Manipur University, Canchipur 795 003, Manipur ,IN
  • Aphid Research Laboratory, Department of Life Sciences, Manipur University, Canchipur 795 003, Manipur ,IN
  • Department of Life Sciences, Tripura University, Agartala 799 130, Tripura ,IN

DOI:

https://doi.org/10.18311/jbc/2010/3638

Keywords:

Harmonia dimidiata, Cervaphis quercus, Predatory Efficiency, Prey Density, Immature Survival.

Abstract

The predatory efficiency and survival of immature stages of an aphidophagous ladybeetle, Harmonia dimidiata (Fabricius) were investigated at five different prey densities, viz., 25, 50, 75, 100 and 125 using Cervaphis quercus Takahashi as prey. A substantial influence of prey density on the rate of larval growth and development was observed. Increased prey density reduced the developmental period. The study also revealed that larval development could be completed at the lowest prey density of 25 prey aphids. The analysis revealed a positive correlation between survival of developmental stages and density of prey provided. A relative increase in weight was observed with increasing density of aphid prey, but only up to a prey density of 100. The functional response exhibited by fourth instar larva exemplified type II predatory response with optimum response at a prey density of 100.

Downloads

Download data is not yet available.

Metrics

Metrics Loading ...

Downloads

Published

2010-09-13

How to Cite

Sharmila, M., Bijaya, P., Singh, T. K., & Agarwala, B. K. (2010). Predatory Efficiency and Developmental Attributes of <I>Harmonia dimidiata</I> (Fabricius) (Coleoptera:Coccinellidae) in Relation to Prey Density. Journal of Biological Control, 24(3), 218–221. https://doi.org/10.18311/jbc/2010/3638

Issue

Section

Research Articles

 

Most read articles by the same author(s)