摘要：

Stink bugs are economically important pests that damage a wide range of crops in the southeastern United States. Stink bug feeding on developing cotton (L. ) bolls may result in reduced yield and loss of fiber quality; similarly, feeding on developing soybean [(L.) Merr.] pods can reduce yield and seed quality. During 2009 and 2010, the seasonal abundance and reproductive biology of (Say) and (L.) were investigated in replicated 1.62–2.83-ha farmscapes containing equal proportions of corn (L.), cotton, peanut (L.), and soybean. Crops were sampled weekly by using whole plant examinations in corn and sweep net sampling in cotton, peanut, and soybean. In 2010 only, adults were dissected to rate their reproductive development, and nymphs were classified to instar. No adults or nymphs ever were observed in corn; however, nymphs were observed in cotton and soybean during late September with peak abundance occurring just after the autumnal equinox. The peak of late-instar nymphs was followed within 2 wk by a peak of nonreproductive adults. More adults were observed in soybean than cotton. In contrast, nymphs and adults were found across all crops and had multiple generations throughout the growing season. Results from this study indicate that C. and are different in voltinism, phenology, and use of hosts. These data provide knowledge of stink bug biology and population ecology at the landscape level and are useful for designing and implementing stink bug management programs.

展开