Acta Entomologica Sinica (1998) 41, 250-257

Kebin Li and Lizhi Luo (1998)
[Effects of larval rearing density on energetic reserves in the adults of oriental armyworm Mythimna separata (Walker)]
Acta Entomologica Sinica 41 (3), 250-257
Abstract: 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, however, 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.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)
Database assignments for author(s): Li-Zhi Luo

Research topic(s) for pests/diseases/weeds:
rearing/culturing/mass production
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Mythimna separata