Reproductive traits of Cyrtorrhinus lividipennis REUTER.
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概要
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Developmental speed and reproductive potential of the mirid bug, Cyrtorrhinus lividipennis, were measured nuder laboratory conditions. Both nymphs and adults were supplied with rice plants onto which gravid females of Nilaparvata lugens were released. Developmental zero and cumulative heat units required for completion of the immature stages were calculated at 11.7°C and 260 day-degrees, respectively, based on the immature period measured at 20, 24, and 28°C. Mean longevities (±SD) of male and female adults at 25°C were 30.1±5.9 and 28.2±5.7 days, respectively. Female adults started oviposition 3.1 days after emegence. Lifetime fecundity of females was 291.2±83.7 eggs, which was more than 10 times as large as the largest figure so far reported for C. lividipennis. It was suggested that the presence of N. lugens females in the rearing cage provided C. lividipennis with a much better food source than the ordinarv rearinv mothnd of prouidin N. lugens eggs laid in rice plants.
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