Susceptibility of Certain Pulse Grains to Callosobruchus maculatus (F.) (Bruchidae: Coleoptera), and Influence of Temperature on Its Biological Attributes

Autor: K.M. Mohamed, Mohamed A.M. Osman, M. F. Mahmoud
Rok vydání: 2015
Předmět:
Zdroj: Journal of Applied Plant Protection. 3:9-15
ISSN: 2314-7954
DOI: 10.21608/japp.2015.7708
Popis: Pulse grains in store suffer from great damage due to the attack of bruchid beetles, especially the pulse beetle(PB), Callosobruchus maculatus (Fabricius). The suitability of five common pulse species (chickpea, cowpea, fieldbean, pea and white bean) to infestation by C. maculatus was investigated. The effect of three legume species on thereproductive biology and adult longevity of PB, as well as the influence of different temperature regimes on itsdevelopment were also studied. Results indicated that the tested pulse species differed in their susceptibility toinfestation with PB. Cowpea seeds were the most susceptible, followed by chickpea and peas; however, white bean andfaba bean seeds showed high degree of tolerance even under heavy PB infestation. As for the effect of pulse species oncertain biological aspects of PB, the ovipositional period was the longest (17.13 days) for the adult females reared oncowpea, whereas the shortest (11.33 days) was recorded for those reared on chickpea. The mean number of eggs laid byPB female reared on cowpea (43.20 eggs) was higher than that laid by female reared on chickpea (35.00 eggs) and pea(32.20 eggs). The shortest longevity of adult males and females was recorded when reared on chickpea grains (14.67and 20.67 days, respectively), while the corresponding longest periods were 15.60 and 25.53 days on cowpea grains.Pertaining to the influence of temperature, PB did not complete its development at 40oC and above. Temperature had aprofound effect on the development of all immature stages of PB. The total developmental period of PB was negativelycorrelated to the increase of temperature; being longest (77.8 days) at the lowest tested temperature (20°C) and shortest(20.7 days) at 35°C. Longevity of either males or females also decreased as temperature increased.
Databáze: OpenAIRE
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