02223nas a2200241   4500008004100000020001400041245014900055210006900204260000900273300001200282490000700294520127000301653002301571100003101594700003301625700002401658700003001682700002901712700003401741700003701775700003401812856013501846       2009                        eng d  a1317-526200aInfestation index and mortality factors of the cotton boll weavil weevil (Coleoptera: Curculionidae) in the semi-arid southeast of Bahia, Brazil0 aInfestation index and mortality factors of the cotton boll weavi  c2009  a111-1220 v243 aThe boll weevil (Anthonomus grandis Boheman, 1843) (Coleoptera: Curculionidae) is a pest that limits the production of cotton, especially in the North East of Brazil. The present study aimed to estimate the infestation index and natural mortality of boll weevil at Caraibas County, located in the semi-arid of the Southwest of Bahia. Te experiment was performed using the cultivar BSR Aroeira, at Fazenda Lagoa Seca, in 2006. Weekly evaluations were performed, in fve sampling areas 25m2, collecting blossoms fallen on the ground. The infestation was estimated by counting the oviposition punctures and /or the feeding on blossoms, and also by the presence of one of the phases of the boll weevil in the inside. Mortality factors were studied through the dissection of blossoms, estimating predation, parasitism, dissection and disease. The results obtained allowed to conclude that the boll weevil determines high infestation levels in the region. Parasitism, dissection and predation, following this order, determine high rates of real mortality of the pest. Catolaccus grandis Burks, 1954 (Hymenoptera: Pteromalidae) and Bracon sp.(Hymenoptera: Braconidae) are parasitoids of boll weevil reported in sothwestern Bahia, being the frst one the predominant species.10aAnthonomus grandis1 aCardoso, Urbano, Pinchemel1 aCastellani, Maria, Aparecida1 aForti, Luiz, Carlos1 aJunior, Ayres, de Oliveir1 aMoreira, Aldenise, Alves1 aColmenarez, Yelitza, Coromoto1 ade Oliveira, Marcelo, Eduardo Co1 aBittencourt, Maria, Aparecida  uhttps://weevil.myspecies.info/infestation-index-and-mortality-factors-cotton-boll-weavil-weevil-coleoptera-curculionidae-semi-arid