4.4 Article

Characterization of Nasutitermes globiceps (Isoptera: Termitidae) esterases

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BIOCHEMICAL GENETICS
卷 38, 期 11-12, 页码 367-375

出版社

KLUWER ACADEMIC/PLENUM PUBL
DOI: 10.1023/A:1026486321957

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esterases; termites; Nasutitermes globiceps; castes; expression during development

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Esterases of Nasutitermes globiceps termites which occur on the Upper Parana' River floodplain (Brazil) were characterized. The electrophoretic pattern of the termite esterases Nasutitermes globiceps was obtained by starch gel electrophoresis. Six esterase activity zones were obtained and numbered, with esterase-1 being the most anodall one and esterase-6 the most cathodal one. Esterase-2 was detected only with substrates derived from the 4-methylumbelliferyl radical. The esterases of N. globiceps present wide substrate specificity, having been observed with substrates derived from alpha -naphthyl (acetate, propionate, and butyrate) and beta -naphthyl (acetate, butyrate) and from 4-methylumbelliferyl (acetate, propionate and butyrate). Esterase-6 is a caste-specific enzyme detected in soldiers. Only esterases 1, 3 and 5 were detected in nymphs. No genetic polymorphism has been detected thus far in the esterases of Nasutitermes globiceps. This study suggests that allozyme variation can be explored to understand Nasutitermes social structure.

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