Biological studies on Bracon brevicornis (Hymenoptera: Braconidae) reared on different host larvae

Bakr, Reda F.A.; Gesraha, Mohamed Ahmed; Guneidy, Noha Awny Mohamed; Farag, Nagy Abd Elatief; Ebeid, Amany Ramadan; Elbehery, Hoda Hassan Ali; Abou-Ellail, Mohamed

doi:10.21608/eajbsa.2014.13138

Biological studies on Bracon brevicornis (Hymenoptera: Braconidae) reared on different host larvae

Document Type : Original Article

Authors

¹ -Department of Entomology,Faculty of Science Ain Shams University Cairo, Egypt -Departmet of Biology – Faculty of Science –King Khalid University – Abha-KSA

² Pests and Plant Protection Dept., Agricultural and Biological Division, National Research Center, Dokki, Cairo, Egypt

³ Faculty of Science Ain Shams University Cairo, Egypt

⁴ Department of Cytology and Genetics, Genetic Engineering and Biotechnology Division, National Research Centre, Cairo, Egypt

10.21608/eajbsa.2014.13138

Abstract

The present work was carried out to study the biological aspect of B. brevicornis when reared on different hosts (Ephestia kuehniella, Galleria mellonella, Corcera cephalonica, Sesamia cretica, Spodoptera littoralis and Pectinophora gossypiella). Our Results assured that the type of host had great impact on the durations of the immature stages and longevity of the parasitoid. The highest & lowest incubation periods were when reared the parasitoids on Pectinophora gossypiella (45.75±1.4hours) and E. kuehniella (39.87±0.95 hours) respectively, the difference was insignificant at the other hosts. Duration of larval stages was significant shorter when parasitoid reared on S. cretica (1.86±0.079 days) than the rest hosts. The longer pupation period was recorded when parasitoid reared on Pectinophora gossypiella (7.6±0.13 days), but was insignificant on the other hosts. The highest duration period of immature stage was when reared B.brevicornis on P. gossypiella (12.75±0.74 days) but insignificant difference when reared on G.mellonella [ 9.16±0.22 days ] and S. cretica [ 9.91±0.14 days ]. The mean duration of male longevity of parasitoids was longer when reared on E. kuehniella (15.73±0.73 days) and shorter when reared on C.cephalonica (11.75±0.51 days). The mean duration of female parasitoids was highest when reared parasitoids on S. cretica (19.6±0.51 days). The total number of eggs laid per female of B.brevicornis during its life span was highest on Galleria mellonella (268.88±19.65 eggs), and lowest on C.cephalonica (78.1±10.63 eggs). A percentage of eggs hatchability was significantly lowest when reared on S. littoralis (0.09±0.02642 %) than when reared on the other hosts, while percentage of emergence was insignificantly different when reared on Sesamia cretica (87.36±3.92 %) and Pectinophora gossypiella (87.02±3.85 %).

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