Influence of gibberellic acid on some biological parameters of ectoparasitoid, Bracon hebetor (Say, 1836) (Hymenoptera: Braconidae)

Abstract

Different concentrations (2, 5, 10, 50, 100, 200, 500 and 1000 mg/L) of gibberellic acid (GA₃) were used to determine the effects of plant growth regulators on development, fecundity, sex ratio and longevity of parasitoid Bracon hebetor (Hymenoptera: Braconidae) reared on greater wax moth, Galleria mellonella (Lepidoptera: Pyralidae). Treatment with GA₃ prolonged the developmental period of female wasps at 2, 50, 500 and 1000 mg/L and at 10, 500 and 1000 mg/L in male wasps. However, GA₃ did not negatively affect the fecundity and sex ratio of parasitoid. Bracon hebetor females reared on GA₃-treated hosts had lower longevity at 10, 500 and 1000 mg/L than the females reared on untreated hosts. For males a significant decline in longevity was also recorded at 5 and 10 mg/L with respect to controls.

Keywords

• Gibberellic acid
• Bracon hebetor
• Developmental time
• Fecundity
• Longevity

Kaynakça

1. Abdellaoui K., Ben Halima-Kamel M., Ben Hamouda M.H. 2009a. Physiological effects of gibberellic acid on the reproductive potential of Locusta migratoria migratoria. Tunisian Journal of Plant Protection, 4: 67-75. Abdellaoui K., Ben Halima-Kamel M., Ben Hamouda M.H. 2009b. Insecticidal activity of gibberellic acid against Spodoptera littoralis (Lepidoptera: Noctuidae) and Locusta migratoria migratoria (Orthoptera: Acrididae). Pest Technology, 3: 28-33. Ahmad N., Rashdi S.M.M.S., Rajput A.A. 2003. Efficacy of plant growth regulators to manage the insect pests of cotton. Asian Journal of Plant Sciences, 2: 544-547. Bronskill J.F. 1961. A cage to simplify the rearing of the greater wax moth, Galleria mellonella (Pyralidae). Journal of the Lepidopterists’ Society, 15: 102-104. Gupta G., Yadav S.R., Bhattacharya A.K. 2009. Influence of synthetic plant growth substances on the survivorship and developmental parameters of Spilarctia obliqua Walker (Lepidoptera: Arctiidae). Journal of Pest Science, 82: 41-46. Harikesh S., Bhattacharya A.K. 2001. Role of plant growth regulators on the developmental profile of Spodoptera litura: Effect of plant growth stimulants. Indian Journal of Entomology, 63: 329-339. Honeyborne C.H.B. 1969. Performance of Aphis fabae and Brevicoryne brassicae on plants treated with growth regulators. Journal of Science of Food and Agriculture, 20: 388-390. Hussein K.T. 2005. Supressive effects of Calendula micrantha essential oil and gibberelic acid (PGR) on reproductive potential of the Mediterranean fruit fly Ceratitis capitata Wied (Diptera: Tephritidae). Journal of the Egyptian Society of Parasitology, 35: 365-377. Kaur R., Rup P.J. 2002. Evaluation of regulatory influence of four plant growth regulators on the reproductive potential and longevity of melon fruit fly (Bactrocera cucurbitae). Phytoparasitica, 30: 224-230. Kaur R., Rup P.J. 2003. Influence of four plant growth regulators on development of the melon fruit fly, Bactrocera cucurbitae (Coquillett). Insect Science and its Application, 23: 121-125. Kaur M., Kaur S. 2013. Tritrophic interactions among coumarin, the herbivore Spodoptera litura and a gregarious ectoparasitoid Bracon hebetor. BioControl, 58: 755-763. Prado S.G., Frank S.D. 2013. Tritrophic effects of plant growth regulators in aphid-parasitoid system. Biological Control, 66: 72-76. Rosler Y., Greany P.D. 1990. Enhancement of citrus resistance to the Mediterranean fruit fly. Entomologia Experimentalis et Applicata, 54: 89-96. Sak O., Uçkan F., Ergin E. 2006. Effects of cypermethrin on total body weight, glycogen, protein and lipid contents of Pimpla turionella (L.) (Hymenoptera: Ichneumonidae). Belgian Journal of Zoology, 136: 53-58. Tsagkarakis A.E., Rogers M.E. 2012. Applications of plant growth regulators to container-grown citrus trees affect the biology and behavior of the Asian citrus psyllid Journal of the American Society for Horticultural Science, 137: 3-10. Uçkan F., Tüven A., Er A., Ergin E. 2008. Effects of gibberellic acid on biological parameters of the larval endoparasitoid Apantales galleriae (Hymenoptera: Braconidae). Annals of the Entomological Society of America, 101: 593-597. Uçkan F., Haftacı İ., Ergin E. 2011a. Effects of indol-3-acetic acid on biological parameters of the larval endoparasitoid Apantales galleriae (Hymenoptera: Braconidae). Annals of the Entomological Society of America, 104: 77-82. Uçkan F., Öztürk Z., Altuntaş H., Ergin E. 2011b. Effects of gibberellic asit (GA3) on biological parameters and hemolymph metabolites of the pupal endoparasitoid Pimpla turionellae (Hymenoptera: Ichneumonidae) and its host Galleria mellonella (Lepidoptera: Pyralidae). Journal of the Entomological Research Society, 13: 1-14. Visscher S.N. 1980. Regulation of grasshopper fecundity, longevity and egg-viability by plant growth hormones. Experientia, 36: 130-131.