Age-stage, two-sex life tables of the melon fly, Bactrocera cucurbitae （Coquil- let-t） （Diptera： Tephritidae）, reared on cucumber （Cucumis sativus L.）, sponge gourd （Luffa cylindrica Roem） and a carrot medium...Age-stage, two-sex life tables of the melon fly, Bactrocera cucurbitae （Coquil- let-t） （Diptera： Tephritidae）, reared on cucumber （Cucumis sativus L.）, sponge gourd （Luffa cylindrica Roem） and a carrot medium （mashed Daucus carota L. mixed with sucrose and yeast hydrolysate） were constructed under laboratory conditions at 25 4- loc, 65% 4- 0.5% relative humidity, and a photoperiod 12 ： 12h （L ： D）. The intrinsic rates of increase of B. cucurbitae were 0.144 6, 0.141 2 and 0.068 8 days on cucumber, sponge gourd, and carrot medium, respectively. The highest net reproduction rate was 172 offspring per fly reared on sponge gourd. The mean generation times ofB. cucurbitae ranged from 34 days reared on cucumber to 56 days reared on carrot medium. The life history raw data was analyzed using the traditional female age-specific life table and compared to results obtained using the age-stage, two-sex life table. When the age-specific female life table is applied to an age-stage-structured two-sex population, survival and fecundity curves will be improperly manipulated due to an inability to include variation in preadult development time. We discussed different interpretations of the relationship between the net reproductive rate and the intrinsic rate of increase to clarify possible misunderstanding in the literature.展开更多
本研究评价了不同类型的套袋对苦瓜上瓜实蝇和南瓜实蝇的防治效果。结果表明，两种实蝇对果长为3～4 cm的苦瓜为害率最低，约为3%；套袋显著影响苦瓜的好瓜率，果长为3～4 cm 的苦瓜套袋后好瓜率显著高于果长为7～8 cm 苦瓜套袋后的好...本研究评价了不同类型的套袋对苦瓜上瓜实蝇和南瓜实蝇的防治效果。结果表明，两种实蝇对果长为3～4 cm的苦瓜为害率最低，约为3%；套袋显著影响苦瓜的好瓜率，果长为3～4 cm 的苦瓜套袋后好瓜率显著高于果长为7～8 cm 苦瓜套袋后的好瓜率，且前者经高密度聚乙烯袋、无纺布袋和牛皮纸袋套袋后好瓜率均≥90%；套袋也显著影响苦瓜的发育和色泽，与未套袋的苦瓜相比，经塑料袋和无纺布套袋后苦瓜果长、横径和单瓜重显著增加，颜色之间并无差异。结合本研究，建议苦瓜套袋防治瓜实蝇和南瓜实蝇的适宜时期为苦瓜发育至果长3～4 cm 时，适合的果袋为高密度聚乙烯塑料袋和无纺布袋。展开更多
文摘Age-stage, two-sex life tables of the melon fly, Bactrocera cucurbitae （Coquil- let-t） （Diptera： Tephritidae）, reared on cucumber （Cucumis sativus L.）, sponge gourd （Luffa cylindrica Roem） and a carrot medium （mashed Daucus carota L. mixed with sucrose and yeast hydrolysate） were constructed under laboratory conditions at 25 4- loc, 65% 4- 0.5% relative humidity, and a photoperiod 12 ： 12h （L ： D）. The intrinsic rates of increase of B. cucurbitae were 0.144 6, 0.141 2 and 0.068 8 days on cucumber, sponge gourd, and carrot medium, respectively. The highest net reproduction rate was 172 offspring per fly reared on sponge gourd. The mean generation times ofB. cucurbitae ranged from 34 days reared on cucumber to 56 days reared on carrot medium. The life history raw data was analyzed using the traditional female age-specific life table and compared to results obtained using the age-stage, two-sex life table. When the age-specific female life table is applied to an age-stage-structured two-sex population, survival and fecundity curves will be improperly manipulated due to an inability to include variation in preadult development time. We discussed different interpretations of the relationship between the net reproductive rate and the intrinsic rate of increase to clarify possible misunderstanding in the literature.
文摘本研究评价了不同类型的套袋对苦瓜上瓜实蝇和南瓜实蝇的防治效果。结果表明，两种实蝇对果长为3～4 cm的苦瓜为害率最低，约为3%；套袋显著影响苦瓜的好瓜率，果长为3～4 cm 的苦瓜套袋后好瓜率显著高于果长为7～8 cm 苦瓜套袋后的好瓜率，且前者经高密度聚乙烯袋、无纺布袋和牛皮纸袋套袋后好瓜率均≥90%；套袋也显著影响苦瓜的发育和色泽，与未套袋的苦瓜相比，经塑料袋和无纺布套袋后苦瓜果长、横径和单瓜重显著增加，颜色之间并无差异。结合本研究，建议苦瓜套袋防治瓜实蝇和南瓜实蝇的适宜时期为苦瓜发育至果长3～4 cm 时，适合的果袋为高密度聚乙烯塑料袋和无纺布袋。
