粘虫幼虫密度对成虫能源物质含量的影响  

EFFECTS OF LARVAL REARING DENSITY ON ENERGETIC RESERVES IN THE ADULTS OF ORIENTAL ARMYWORM MYTHIMNA SEPARATA (WALKER)

作　　者：李克斌[1] 罗礼智[1] 

机构地区：[1]中国农业科学院植物保护研究所

出　　处：《昆虫学报》1998年第3期250-251,共2页Acta Entomologica Sinica

基　　金：国家自然科学基金

摘　　要：通过粘虫Ｍｙｔｈｉｍｎａｓｅｐａｒａｔａ幼虫密度（１头／瓶、２０头／瓶、４０头／瓶）对成虫水分、甘油酯和糖原含量影响的研究结果。不同幼虫密度处理的初羽化成虫水分含量无明显差异，但１～５日龄４０头／瓶的雄蛾及１～３日龄雌蛾高于单头处理的；２０、４０头／瓶的初羽化成虫甘油酯含量没有显著的差异，但均显著地高于单头饲养的；２０头／瓶羽化的雌、雄成虫１～５日龄甘油酯含量随日龄的增加而增加，到５日龄达到最大值后才开始下降，４０头／瓶的在３日龄达到最大值后即开始下降，而单头饲养羽化的在１日龄达到较高值，２日龄降至最低后再缓慢回升。幼虫密度对初羽化成虫及１～７日龄雄蛾的糖原含量没有显著的影响，但２０、４０头／瓶条件下羽化的１～７日龄雌蛾糖原含量随日龄的增加而增加，而单头饲养的则随日龄的增加而下降。这些结果表明幼虫密度不仅影响到初羽化成虫能源物质的含量，而且也可能影响到成虫能源物质特别是甘油酯的代谢。Contents of glyceride, glycogen and water in various stages of the adult oriental armyworm, Mythimna separata (Walker), as affected by larval rearing densities (1,20,40 larvae/jar(850 mL)) were studied in laboratory conditions. Glyceride level in the newly emerged adults from crowded larvae was significantly higher than that from isolated ones, even though it was insignificantly different in adults from 20 and 40 larvae/jar. Differences in glyceride levels also occurred in later stages of the adult life. Glyceride contents in both male and femlae adults from isolated larvae were significantly greater than those from crowded larvae on the 1st d of the adult life. Situations, howe ver,inversely changed by the 3rd and 5th d of the adult life. Glycogen and water contents in the newly emerged adults were insignificantly affected by larval rearing densities, but were significantly affected in later stages of the adult life. Water contents in adults from 40 larvae/jar were significantly higher than that from isolated larvae on the 1st and 5th d of adult life. Glycogen level in 1dayold male adults from 40 larvae/jar was significantly higher in comparison with that from isolated and the other larval rearing densities. Besides, glycogen content in female adults from crowded larvae was increased, but that from isolated ones was decreased as the adult's age increased. These results indicate that larval rearing density affects the levels of energetic sources not only in the newly emerged adults, but also in later stages of the adult life. Significance of the study is discussed in light of published findings.

关 键 词：粘虫 幼虫密度 甘油酯 糖原 成虫能源物资 

分 类 号：Q968.1[生物学—昆虫学] Q969.42