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The velvet bean caterpillar Anticarsia gemmatalis promotes extensive damage to soybean and is controlled frequently by chemical insecticides. Due to risks to human and animal health as well as the environment, new approaches were developed to A. gemmatalis control such as the bioinsectide Baculoviru anticarsia. The development of resistance in A. gemmatalis populations treated along several generations with B. anticarsia was reported under laboratory conditions. The insects show complex mechanisms against microorganism infection, such as the lectins, that work as recognition molecules. The aim of this work was to develop polyclonal antibodies to A. gemmatalis lectin. The lectin activity in A. gemmatalis caterpillar hemolymph was evaluated using erythrocytes from human, rabbit, mouse, sheep and cow. Only bovine erythrocytes were not agglutinated by lectin. The rabbit erythrocytes showed stronger reactivity (1:512). Therefore the polyclonal antibodies were raised in rabbit immunized with autologous erythrocytes sensitized with lectin. The antibody to lectin showed a titer of 1:8 in immunodiffusion test. In this study we described a simple method for antibody production against hemolymph lectin without expensive purification techniques.

Produção de anticorpos policlonais para lectina de hemolinfa de Anticarsia gemmatalis