ISSN:
0739-4462
Keywords:
Bombyx mori
;
major hemolymph protein
;
metamorphosis
;
Chemistry
;
Food Science, Agricultural, Medicinal and Pharmaceutical Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Biology
Notes:
During the metamorphosis of the silkworm, Bombyx mori, three major hemolymph proteins (MHPs) (molecular weights 17,000, 25,000, 27,000) were detected and found to be distributed in the hemolymph and in the tissues of several organs, such as the fat body, midgut, ovary, testis, and even eggs. The MHPs in eggs gradually decreased and disappeared during embryogenesis. The formation, distribution, and utilization of MHPs in tissues other than the gonad, however, were not affected by sex.Radioisotope experiments in vivo revealed that the MHPs were synthesized at an early period of the fifth larval instar. The synthesis of at least two of them occurred in the fat body. MHPs in the hemolymph entered the tissues at the onset of the larval-pupal transformation. On the basis of their appearance, distribution, and depletion, the MHPs may be classified as reserve proteins which are synthesized in the larval stage and utilized later in the developmental stages.
Additional Material:
11 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/arch.940020109
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