Abstract. The present research was aimed to study the biology of Caryedon serratus (Olivier) on groundnut,. Arachis hypogaea (L.) under. C. serratus infestation of groundnuts is revealed by larval emergence holes and the presence of cocoons outside the pods. Feeding damage to the seeds can be . Higher rates of infestation by the larvae of the seed weevil Caryedon serratus Olivier (Col., Bruchidae) were recorded. The larvae of C. serratus bore into the.

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Characteristics of groundnut specimen used. As for the number of eggs laid, it was on average The statistical analyses do not emphasize any significant difference between males and females lifespan.

Hashmi AA; Tashfeen A, This operation continues till the female death. Four sets of pods were used making pods. The groundnut bruchid, Caryedon gonagra F. On pods with three seeds, the rate of emergence was Dedicated naturalists volunteer their time and resources here to provide this service. A new subspecies of Caryedon Coleoptera: The phytophagous insect fauna associated with Acacia nilotica ssp.

Journal of Stored Products Research, 26, Lambert Academic Publishing, pp. The presence of these cagyedon species in three agro-ecological zones of the country, explains the maintenance of the insect in these areas. Five couples of C. Univ de Ouagadougou, Burkina Faso, p. Environmental Entomology, 37, The groundnut pod which was used as laying support was replaced daily and observed under binocular microscope to notice the eventual presence of eggs.


Taxonomic Tree Top of page Domain: In our results, the majority of laying is observed on leguminous plants. Damage potential and loss caused by the groundnut bruchid Caryedon serratus Olivier [Coleoptera: Comparative effects of some botanicals for the control of the seed weevil Caryedon serratus Olivier Col.

The groundnut pods were then divided into several collections of 10 pods with the same laying carydon.

groundnut bruchid (Caryedon serratus)

From hatching to adult stage, C. Variations in serratjs stages duration or their number may suggest the presence of a biotype [16]. During these observations, only one egg was kept by pod and the other eggs were destroyed.

The pupae of Chrysomeloidea. AE Most popular papers. After this period, the insects were withdrawn cwryedon the groundnut pods were observed under binocular microscope to determine the effective presence of eggs. Curculionidae under Constant Temperature. In addition to this factor, insect used variety and biotype can also influence this development period. The oviposition pe-riod is The daily laying of the females showed an important variability during the oviposition period.

The fourth stage which precedes the larva entry into nymph stage lasts on average 8. On the other host plants seeds, although eggs were laid, no larval development was observed after more than four months observation. Please consider upgrading your browser to the latest version or installing a new browser. The results Table 2 indicate that eggs incubation period is 4.


Please enable JavaScript to view the comments powered by Disqus. As far as the survival rate of larvae is concerned, more than half of laid eggs evolves to give adults, whatever the pod size; suggesting that this parameter does not have an influence on emergence rate.

The average length for insects emerged from two-seeds pods was 6. Annual Review of Entomology, 24, The damage to seeds can be seen when infested pods are opened. The newly hatched larva burrows straight through the eggshell and pod wall, and eats the kernel, feeding only within a single seed. The re-sults showed that more eggs were laid on the seeds of Papilionaceae Universite Cheick Anta Diop de Dakar, p. The importance of the damage caused by this pest during storage explains why the scientific researches devoted to it [10].

Caryedon serratus

Especes type du genre Caryedon Schonherr, Rev. Abhishek and Rathore, Contributed by Jason Botz on 23 July, – 1: Such damage is particularly significant when the peanuts are destined for confectionery purposes.

The insects are withdrawn and the pods are observed to follow the evolution of eggs till the emergence of adults. Tropical Agriculture, 40 3: The study of biological parameters C.