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Development, Vol 120, Issue 10 2869-2877, Copyright © 1994 by Company of Biologists

JOURNAL ARTICLES

Fate mapping of the silkworm, Bombyx mori, using localized UV irradiation of the egg at fertilization

M Myohara
Department of Insect Genetics and Breeding, National Institute of Sericultural and Entomological Science, Ibaraki, Japan.

Bombyx eggs at the fertilization stage (0-2 hours after oviposition) were irradiated with a scanning UV-laser microbeam (355 nm) over an area of about 1% of the total egg surface. In spite of absence of nuclei or cells at the irradiated sites, larvae from treated eggs showed localized cuticle defects in the integument. The location and frequency of the defects within the cuticular pattern correlated closely to the site of irradiation both in the anteroposterior and the dorsoventral direction. Based on the correlation, presumptive regions for each larval segment were located and a fate map of the Bombyx egg was established.




© The Company of Biologists Ltd 1994