Acta Entomologica Sinica (1989) 32, 418-426

Kang Le, Hong-Chang Li and Yong-Lin Chen (1989)
[Analyses of numerical character variations of geographical populations of Locusta migratoria phase solitaria in China]
Acta Entomologica Sinica 32 (4), 418-426
Abstract: Different morphometric anal yses (fuzzy cluster, hierachical cluster and principal component) of 21 geographical populations of Locusta migratoria phase solitaria in China have yielded rather consistent results. The essential geographical variations and the interrelation among the populations are discussed and the geographical delimitation of the three subspecies of Locusta migratoria in China is proposed. It is found that the population of northern Shaanxi Province, like the populations in other parts of that province and in the North China plain, belongs to the subspecies L. migratoria manilensis. In the North China plain, obvious morphological difference exists among the populations of the outbreak or originating centers and ordinary or temporary breeding areas and this phenomenon presumably is caused by the enhanced fluctuation of environmental factors which influence population density. The principal component analysis revealed the transitional position of the Inner Mongolian population between the subspecies L. migratoria migratoria of Xinjiang Uighur Autonomous Region and the subspecies L. migratoria manilensis of the central and eastern parts of China, but the populations of western Inner Mongolia are more closely related to the subspecies of Xinjing and Gansu. In the analyses, the E/F, F/C and H/C ratios are used not only as important information of body form, but also for weighting the E, F and C values. It seems not appropriate to apply the morphometric method to distinguish the subspecies and to delimit the geographical: regions of their distribution by using a great number of samples and extensive collections because of the great inherent variability of the species as influenced its spatial distribution, but it is useful to show the interrelations among the geographical populations.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)

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

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Locusta migratoria		China (south)
	Locusta migratoria		China (NE)
	Locusta migratoria		China (NW)