| population structure of the brazilian southern green stink bug, nezara viridula. | the southern green stink bug, nezara viridula (l.) (heteroptera: pentatomidae), is a cosmopolitan and economically important pest to several crops. studies on n. viridula migration and population structure have been neglected. we studied geographically distinct brazilian n. viridula populations to assess their variability and to determine gene flow among them. dna from specimens collected on soybean fields were subjected to rapd analysis to determine genetic similarity and population structure p ... | 2005 | 17119605 |
| insect drift and the case of mayrinia curvidens (mayr) (hemiptera: pentatomidae) drift on the southern atlantic coast of brazil. | insect drift on shore of lakes and seas is a relatively common phenomenon although apparently not frequently reported in the literature. here we review the worldwide occurrence of insect drift with emphasis on heteroptera, and speculate on possible causes to explain such phenomenon. the dramatic drift of millions of specimens of the pentatomid mayrinia curvidens (mayr) on the shore of the southern coast of the atlantic ocean in brazil is reported for the first time. this drift, previously observ ... | 2008 | 18506287 |
| occurrence, distribution and abundance of halobates micans eschscholtz, 1822 (heteroptera, gerridae) along the southeastern brazilian coast. | data collected during an oceanographic cruise along the southeastern brazilian coast from cape frio (22 degrees 58' s) and paraná (27 degrees 50' s) in march 1982 showed that the marine insect halobates micans occurred along the southeastern brazilian bight, but in lower abundance in low-temperature areas due to the intrusion and upwelling of south atlantic central water, and in low-salinity areas in coastal water. insect capture was higher at night and in the oligotrophic tropical water. the nu ... | 2009 | 19347147 |
| insecticide susceptibility of euschistus heros (heteroptera: pentatomidae) in brazil. | euschistus heros (f.) (heteroptera: pentatomidae) is the most prevalent stink bug pest in brazil, and populations can be difficult to manage using organophosphates or endosulfan. because e. heros is difficult to rear in the laboratory, no baseline insecticide susceptibility data have been published. therefore, we conducted dose-mortality studies using field-collected insects, and, using the results from the dose-mortality studies, we surveyed susceptibility to acephate, methamidophos, and endosu ... | 2009 | 19610440 |