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Insect Pest Spectrum of Stored Palm Kernel and the Damage Caused by Them

Published online by Cambridge University Press:  19 September 2011

J. Allotey  and
R. Kumar
J. Allotey
Affiliation:
Department of Biological Sciences, Rivers State University of Science and Technology, Port Harcourt, Nigeria
R. Kumar
Affiliation:
Department of Biological Sciences, Rivers State University of Science and Technology, Port Harcourt, Nigeria
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Abstract

Assessment of damage to apparently good quality palm kernels by test insect species under laboratory conditions revealed that all the cultures had other pest species due to hidden infestation. The total damage caused by the insects to palm kernels in the experimental jars ranged from 17.5 to 30.9% at the end of a 1-yr storage period. With the exception of test species, Oryzaephilus mercator (Fauv.) and Tribolium castaneum (Herbst) which were predominant in cultures in which they were formally introduced, the other cultures were found to be dominated by O. mercator, T. castaneum, Lasioderma serricorne (F.) and Cryptolestes ferrugineus (Steph.). Thus the damage reported above was principally due to these four species. Symptoms of damage to palm kernels by O. mercator; T. castaneum and L. serricorne have been given for the first time and the pest status of the beetle pests associated with stored palm kernel assessed relative to damage caused.

Résumé

Évaluation des dommages aux palmes amandes de bonne qualitées en apparence par des espèces des insectes tests au condition de laboratoire a révélé que tous les cultures ont été les autres espèces de dépredateurs causé par l'infestation caché. Les dégâts totals causé par les insectes aux palmes amandes dans les jarres experimentales rangé de 17.5 à 30.9% au bout d'une année d'enmagasinage. A l'exception des espèces comme Oryzaephilus mercator (Fauv.) et Tribolium castaneum (Herbst) qui étaient prédominante dans ses cultures, les autres cultures étaient dominés par O. mercator, T. castaneum, Lasioderma serricorne (F.) et Cryptolestes ferrugineus (Staph.). Ainsi, les dégâts rapportés au-dessus étaient principalement causés par ces quatre espèces. Symptôme de dégâts aux palmes amandes par O. mercator; T. castaneum et L. serricorne ont été donné à la première fois et la position de dépredateurs scarabées de palmes amandes enmagasinage ont été evaluée relative aux dégâts causes.

Keywords

Assessmentdamagesymptomspalm kernelsinsect pestsÉvaluationdommagesymptôme de dégâtsles palmes amandesdépredateurs
Type
Research Article
Information
International Journal of Tropical Insect Science , Volume 9 , Issue 5 , October 1988 , pp. 617 - 623
Copyright
Copyright © ICIPE 1988

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References

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