Summary
Labelling of the adults ofBracon gelechiæ Ashmead by allowing them to feed on 10 per cent. glucose solution containing phosphoric acid (H3PO4) with P32 is not practicable as the adult parasites are unable to pick up enough radioactivity. On the other hand labelling of the adults by rearing them on host caterpillars ofCorcyra cephalonica Stainton, the latter being fed on crushed maize mixed with radioactive phosphoric acid is quite a convenient and satisfactory method for the purpose of mass release of the parasite under the natural conditions, as such individuals show tolerably high degree of radioactivity and are therefore easy to detect. Moreover, the developmental period of the parasite by rearing it on radioactive host caterpillars is not adversely affected and the adults remain alive for a considerable period.
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Narayanan, E.S., Lai, R., Rahalkar, G.W. et al. Labelling of adults of an insect parasiteBracon Gelechiæ ashmead with radioactive phosphorus (P32). Proc. Indian Acad. Sci. 49, 149–155 (1959). https://doi.org/10.1007/BF03051651
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DOI: https://doi.org/10.1007/BF03051651