TITLE

Effect of Temperature on the Functional Response of Bracon hebetor Say (Hymenoptera: Braconidae) to Various Densities of the Host, Ephestia cautella (Walker) Larvae

AUTHOR(S)
Al-Taweel, A. A.; Mohsen, A. A.; Hamad, B. Sh; Mahmood, E. A.
PUB. DATE
March 2014
SOURCE
American-Eurasian Journal of Sustainable Agriculture;Mar2014, Vol. 8 Issue 3, p71
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The effects of host density and temperature on the functional response of Bracon hebetor Say (HYMENOPTERA: BRACONIDAE) parasitizing Ephestia cautella (Walker) larvae were evaluated at three constant temperatures (14, 26, and 35°C) and four host densities (10, 20, 40, and 80 numbers). A type II functional response was obtained at all temperatures tested. The maximum parasitism rate was observed in density of 80 hosts, ranged from 25 at 14°C to 40 at 35 then to 45 at 26°C. The searching efficiency (a) was highest at 26°C (2.5) and then at 35°C (2) and then at 14°C (0.94). The estimated value of handling time (Th) was 0.0094, 0.011 and 0.031 day for 26, 35 and 14°C respectively. The maximum rate of parasitism was observed at 14, 26 and 35°C (32.94, 32.22 and 36.51 larvae/24 h, respectively). The results suggest that Bracon hebetor has potential as a bio control agent against E. cautella.
ACCESSION #
97105840

 

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