Suitability of three Ostrinia species as hosts for Macrocentrus cingulum： A comparison of their encapsulation abilities  

作　　者：Sebastien Havard 

机构地区：[1]Universit de Toulouse, INP, UPS EcoLab, 31062 Toulouse [2]CNRS, EcoLab, 31062 Toulouse, France [3]ENFA UMR5174, Laboratoire Evolution and DiversiteBiologique, Universit de Toulouse [4]CNRS, UMR5174, Laboratoire Evolution and, Diversit Biologique, Universit Paul Sabatier, Toulouse, France

出　　处：《Insect Science》2014年第1期93-102,共10页昆虫科学（英文版）

摘　　要：Two cornborer species, Ostrinia furnacalis （Lepidoptera： Crambidae） and O. nubilalis, are major corn pests in Asia and Europe, respectively. In both continents, the larval endoparasitoid Macrocentrus cingulum （Hymenoptera： Braconidae） develops on another, closely related stemborer, O. scapulalis, which feeds on mugwort and other dicotyledons. M. cingulum also emerges from O. furnacalis in Asia and （9. nubilalis in North America, but not from O. nubilalis in Europe. We assessed the ability of three populations of each of the three Ostrinia species to encapsulate foreign bodies of a size similar to that of a M. cingulum egg. We conclude that variations in encapsulation ability alone cannot account for the differences observed in the field between parasite emergence rates in these different host species and geographic areas.Two cornborer species, Ostrinia furnacalis （Lepidoptera： Crambidae） and O. nubilalis, are major corn pests in Asia and Europe, respectively. In both continents, the larval endoparasitoid Macrocentrus cingulum （Hymenoptera： Braconidae） develops on another, closely related stemborer, O. scapulalis, which feeds on mugwort and other dicotyledons. M. cingulum also emerges from O. furnacalis in Asia and （9. nubilalis in North America, but not from O. nubilalis in Europe. We assessed the ability of three populations of each of the three Ostrinia species to encapsulate foreign bodies of a size similar to that of a M. cingulum egg. We conclude that variations in encapsulation ability alone cannot account for the differences observed in the field between parasite emergence rates in these different host species and geographic areas.

关 键 词：cornborer ENCAPSULATION host/parasitoid Macrocentrus cingulum Ostriniaspp. 

分 类 号：S435.132[农业科学—农业昆虫与害虫防治] TN306[农业科学—植物保护]