Abstract
Studying the spatial pattern of insect pests and the temporal stability of their patterns is important in understanding underlying ecological mechanisms and in developing pest management programs in cultivated crop systems. To elucidate the spatio-temporal pattern of the black rice bug, Scotinophara lurida, in rice fields, samplings were conducted in two rice fields over 2 years. Using spatial analysis by distance indices, the spatial pattern of each developmental stage of S. lurida and their temporal stability of the spatial pattern were identified. Most of the I a (the index of aggregation) values for overwintered adults and eggs of S. lurda were close to 1, indicating random distribution pattern while nymphs and new adults mainly had I a values >1, indicating an aggregated distribution pattern. According to spatial association analysis between successive samples using X (the index of spatial association), the spatial pattern of S. lurida showed strong temporal stability throughout the season. Also, there was strong association between the spatial patterns of developmental stages, indicating the great effect of the spatial pattern of the previous developmental stage on that of later developmental stage. Factors influencing the spatial pattern and spatial stability of S. lurida are discussed.
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This work was supported by the Brain Korea 21 project.
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Kim, H., Kim, ST., Jung, MP. et al. Spatio-temporal dynamics of Scotinophara lurida (Hemiptera: Pentatomidae) in rice fields. Ecol Res 22, 204–213 (2007). https://doi.org/10.1007/s11284-006-0305-4
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DOI: https://doi.org/10.1007/s11284-006-0305-4