Indian Journal of Entomology

Open Access
SCOPUSWeb of Science
  • Year: 2024
  • Volume: 86
  • Issue: 2

Bioecology of Reduviid Rhynocoris rapax-Predator of Podagrica decolorata

  • Author:
  • Yao N’guessan1, Tano Dje Kevin Christian1, Obodji Adagba2,*, Ossey Christian Landry3, Soro Senan1
  • Total Page Count: 3
  • Published Online: Aug 31, 2024
  • Page Number: 362 to 364

1Laboratory for Improvement of Agricultural Production, UFR-Agroforestry, University of Jean Lorougnon Guédé, Daloa, BP 150 Daloa, Côte d’Ivoire

2Laboratory of Zoology and Animal Biology, UFR-Biosciences, University of Félix Houphoueët Boigny, Abidjan-Cocody, 22 BP 582Abidjan22, Côte d´Ivoire

3National Center of Agronomic Research, Research Station of Food Crops, Laboratory of Entomology, 01 BP 633Bouaké01, Côte d’Ivoire

Abstract

Flea beetle Podagrica decolorata (Duvivier) is a defoliator of okra. The study of some biological parameters of bedbug, Rhynocoris rapax (Stal) was carried out in locality of Man, The study is part of the control of this crop pest. Boxes were used to rear the insects. A thermohygrometer was used to determine the regular temperature and humidity. Larval monitoring revealed five larval stages, with the longest development time of 16.28 ± 2.41 days for stage 5. The highest survival rate was observed for fifth-stage larvae (96.09 ± 03.14%). Female biological cycle was an mean 82.10 ± 09.41 days, and male biological cycle was an mean 68.67 ± 08.44 days. The sex ratio was 0.58. This study revealed positive correlations between humidity and the larval cycle, followed by negative correlations between temperature and the larval cycle.

Keywords

Rhynocoris rapax, Podagrica decolorata, Chrysomelidae, Okra, Predator, Defoliator, Reduviidae, Biological parameters, Larvae, Fertility, Egg, Sex ratio, Temperature, Humidity