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\hypersetup{pdftitle={Studies on Biology and Feeding Potential of an Anthocorid Predator Cardiastethus Exiguus Poppius (HEMIPTERA: ANTHOCORIDAE) on Corcyra Cephalonica Stainton},pdfauthor={Swaroop Kher, P.r. Shivpuje},pdfsubject={Tropentag 2010: Abstract},pdfkeywords={Anthocoridae, Cardiastethus exiguus, feeding potential, ntegrated pest management, mass production},pdfpagemode=None,colorlinks=true}
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\parbox[b]{13.4cm}{\centering \large{\textbf{Tropentag, September 14-16, 2010, Zurich}}\\[1ex] \Large{``World Food System  ---\\A Contribution from Europe''\\[2ex]}}
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\Large{\textbf{Studies on Biology and Feeding Potential of an Anthocorid Predator Cardiastethus Exiguus Poppius (HEMIPTERA: ANTHOCORIDAE) on Corcyra Cephalonica Stainton\footnote{\textbf{Contact Address:} Swaroop Kher, University of Alberta, Agricultural, Food and Nutritional Science, 4-10 Agriculture/Forestry Centre, University of Alberta, AB T6G 2P5 ~Edmonton, Canada, \mbox{e-mail}: \email{swaroopkher@gmail.com}}\\[0.8ex]}}
\normalsize{\textsc{Swaroop Kher$^{1}$, P.r. Shivpuje$^{2}$}}
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\begin{itemize*}
\item[]{\small{\textit{$^{1}$University of Alberta, Agricultural, Food and Nutritional Science, Canada}}}
\item[]{\small{\textit{$^{2}$College of Agriculture, Marathwada Krishi Vidyapeeth, Parbhani, }}}
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\index[author]{Shivpuje, P.r.}
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\textbf{Abstract}
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\normalsize{
Insect biological control involving use of various natural enemies of insect pests including predators, parasites and microorganisms is one of the sustainable approaches in Integrated Pest Management. The present investigation aimed at studying biology and feeding potential of a potential anthocorid predator, Cardiastethus exiguus Poppius (Hemiptera: Anthocoridae) on the eggs of Corcyra cephalonica Stainton (Lepidoptera: Pyralidae) under laboratory conditions to study the feasibility of the predator for mass production. To understand the effects of temperature variations on the life cycle of C. exiguus, the observations were taken from September through mid January. The results showed a mean hatching percentage of 82 percent under laboratory conditions. The total development period on an average was 21.23 days from September to early November while it prolonged in a period from mid-November to mid-January to an average of 22.63 days as a result of low temperatures pertaining to the winter. Mean feeding potential throughout the nymphal period was 44.8 eggs from September to November while increase in the nymphal period due to lower temperatures resulted in feeding potential to change to an average of 49.57 eggs although the rate of egg consumption was quite steady. Longevity of adult males and females was on an average of 36.5 and 58.8 days, respectively and the commensurate mean feeding potential ranged from 185.7 eggs for male and 317.12 eggs for females throughout their longevity. Fecundity was high (average 28--210 eggs laid during their life time) and adults could survive for 4--7 days even without food which shows their sturdiness. Trials on host preference for the first time reported preference of C. exiguus to the eggs of \textit{Plutella xylostella} Linnaeus with average feeding potential of 58.5 eggs during the nymphal period of 20 days. C. exiguus was found to offer better prospects for mass production.}

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\noindent \textbf{Keywords:} Anthocoridae, Cardiastethus exiguus, feeding potential, ntegrated pest management, mass production
\index[key]{Insects}
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