Acta Entomologica Sinica (1964) 13, 329-338

Huang Liang-win and Ma Shin-chum (1964)
[A preliminary study on the biological characteristics of the Oriental Migratory Locust (Locusta migratoria manilensis (Meyen)) in different phases]
Acta Entomologica Sinica 13 (3), 329-338
Abstract: This paper deals with the biological characteristics of Locusta migratoria manilensis in different phases. The results from this investigation show that the biological characteristics of this species in the two phases are remarkably different. These differences may be summarized as follows: 1. The developmental rate and the percentage of survival of phase solitaria were greater than those of phase gregaria. 2. The fecundity. of phase solitaria was higher than that of phase gregaria, and the ovaries of the former had a greater number of ovarioles. 3. Phase gregaria had a larger coefficient of food assimilation, which is the ratio of the amount of food-absorbed to the amount of food eaten, both measured in dry weights in the adult stage. 4. The water content in the body of phase solitaria was larger than that of phase gregaria, but the fat content of the former was larger than that of the latter. Consequently, phase gregaria was more cold-hardy. Finally, the problem of phase transformation related to the periodicity of locust outbreaks was briefly discussed.
(The abstract is excluded from the Creative Commons licence and has been copied from Acridological Abstracts with permission by NRI, Univ. of Greenwich at Medway.)
(original language: Chinese)

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

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Locusta migratoria