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      A New Alkaloid from Two Coccinellid Beetles Harmonia axyridis and Aiolocaria hexaspilota

      Bulletin of the Korean Chemical Society
      Korean Chemical Society

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          Brine shrimp: a convenient general bioassay for active plant constituents.

          A method, utilizing brine shrimp (Artemia salina Leach), is proposed as a simple bioassay for natural product research. The procedure determines LC (50) values in microg/ml of active compounds and extracts in the brine medium. Activities of a broad range of known active compounds are manifested as toxicity to the shrimp. Screening results with seed extracts of 41 species of Euphorbiaceae were compared with 9KB and 9PS cytotoxicities. The method is rapid, reliable, inexpensive, and convenient as an in-house general bioassay tool.
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            Review of the Defensive Chemistry of Coccinellids.

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              Hemorrhage in a Coccinellid Beetle and Its Repellent Effect on Ants.

              Special refinements of the bleeding mechanism of the Mexican bean beetle, Epilachna varivestis Mulsant, are described, and the defensive effectiveness of the mechanism against ants is demonstrated. Ants may have provided a major selective force in the evolution of the mechanism.
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                Author and article information

                Journal
                Bulletin of the Korean Chemical Society
                Bulletin of the Korean Chemical Society
                Korean Chemical Society
                0253-2964
                March 20 2002
                March 20 2002
                : 23
                : 3
                : 497-499
                Article
                10.5012/bkcs.2002.23.3.497
                947fb569-0921-4c14-ba50-3b794d64e49f
                © 2002
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