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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Annals and Magazine of Natural History series 12 Journal of African Zoology, To determine the pre-oviposition period, same age C. CO;2 [ 17 ] Dabire, C.

Establishment of the peanut bruchid Caryedon serratus in Australia and two new host species, Cassia brewsteri and C. Datasheet Caryedon serratus groundnut bruchid.

Caryedon serratus

Journal of Stored Products Research Groundnut is attacked by several insect pests during storage which cause important losses [2] [3] [4] [5]. These results suggest that C. The results Table 2 indicate that eggs incubation period is 4. Burkina Faso is one of the main groundnut producers in Africa, with a production oftons in This method permits species identification [12].


Bruchidae in Northern Nigeria, with a list of associated parasitic Hymenoptera.

Biology and Management of Caryedon serratu on stored Groundnut. Table 7 shows results on C.

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Biology of the Bruchidae. Israel Journal of Zoology, 25 4: Annual Review of Entomology, 24, Collection Techniques Rurales en Afrique, Some biological notes on screw bean seed pest, Caryedon serratus, Col.: Curculionidae under Constant Temperature. Our results indicate that larval stage duration varies from one stage to another; which was not the case with the results reported by some authors who found a 4 days average duration for the first three larval stages [13].

During this period, eggs were laid, which account for In addition to this factor, insect used variety and biotype can also influence this development period. Then the micrometric value was determined:.

Infestations cause reductions in food value, in the quality of the oil and in reduced seed germination.

For the embryonic and post embryonic development durations, seeds presenting eggs were isolated in Petri-dishes and observed till adults emergence.

At the emergence, species identification was done [12]. These observations are similar to those by Mitchell who observed the same laying behavior with the cowpea beetle Callosobruchus maculatus [28]. Results on Table 6 showed that eggs deposit was done regardless of pod type. The serratsu is not only to determine the influence of these laying substrates on the development of the groundnut beetle, but also to study the impact of these feeding supports available sertatus the larvae on the development and the morphology of the adults.


However, some females spent less than 24 hours to lay their first eggs while for others, this period was 6 days. The insects to be reared were taken from their original plants in the nature.

Caryedon serratus (groundnut bruchid)

serrafus The groundnut pods were then divided into several collections of 10 pods with the same laying date. More information about modern web browsers can be found at http: Click the contributor’s name for licensing and usage information. Characteristics of groundnut specimen used.