Summary
Aqueous extracts from spermatophores ofAcanthoscelides obtectus (Coleoptera, Bruchidae) have been chromatographed on Sephadex G 25 and G 15 columns, the active fractions being further purified by preparative SiO2 TLC. The isolation and properties of 2 biologically active compounds are reported. The paragonial substance A has a favourable action upon oogenesis, is a low molecular weight molecule (500–1000) and gives 1 single amino acid on hydrolysis, corresponding to glycin on TLC. The paragonial substance B is toxic, or an inhibitor of oogenesis at lower concentration, thus showing an antagonistic effect.
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Das, A.K., Huignard, J., Barbier, M. et al. Isolation of the two paragonial substances deposited into the spermatophores ofAcanthoscelides obtectus (Coleoptera, Bruchidae). Experientia 36, 918–920 (1980). https://doi.org/10.1007/BF01953792
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DOI: https://doi.org/10.1007/BF01953792