ISSN:
1432-1939
Keywords:
Virus/vector interactions
;
Alatae formation
;
Aphis gossypii
;
Cucurbita pepo
;
Zucchini yellow mosaic virus
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary Zucchini yellow mosaic virus (ZYMV) and Aphis gossypii Glover are two components of a recently identified plant-parasite system that provides an excellent opportunity to study interrelations between a virus and a vector that share the same host, but have no direct physiological interaction. In a field experiment we documented numbers of alate and apterous A. gossypii on healthy Cucurbita pepo and on plants inoculated with virus 0, 7, 14, and 21 days before aphid infestation. When plants were inoculated and infested simultaneously, more than twice as many alatae were produced after 20 days of colony growth than on any other treatment. This indicates that properties unique to the early stages of viral infection somehow stimulated wing formation. Because it is spread by the activities of alatae, virus dispersal would be greater as a result of these properties. Developmental rate, total numbers of aphids, and numbers of alatae and apterae decreased as the time between virus inoculation and aphid colonization increased.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00317263
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