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
Five different trapping treatments, spraying attractant on bottle surface and spraying attractant inside the bottles with 0, 50,100 and 200 mL water, were set to trap Bactrocera dorsalis and B. cucurbitae in guava （P...Five different trapping treatments, spraying attractant on bottle surface and spraying attractant inside the bottles with 0, 50,100 and 200 mL water, were set to trap Bactrocera dorsalis and B. cucurbitae in guava （Psidium guajava） park. The results showed that when the usage of attractant was 1 g, both Haonian and Wende had trapping effect on B. dorsalis and B. cucurbitae. The trapping effect of Haonian on B. dorsalis was better than that of Wende, while their trapping effects on B. cucurbitae was just the opposite. The trapping effects of different treatments had great difference. The trapping effect of Haonian on two species of fruit flies enhanced with the increasing volume of water, and reached the ma^mum value as the water volume was 200 mL. With the increasing volume of water, the trap- ping effect of Wende on two species of fruit flies first increased, and then decreased, which reached the maximum value as the water volume was 50 mL. Different treatments with attractants spraying inside bottles had better trapping effects on two species of fruit flies than that spraying on bottle surface.展开更多
Methoprene （an analogue of juvenile hormone） application and feeding on a protein diet is known to enhance male melon fly, Bactrocera cucurbitae Coquillett （Diptera： Tephritidae）, mating success. In this study, w...Methoprene （an analogue of juvenile hormone） application and feeding on a protein diet is known to enhance male melon fly, Bactrocera cucurbitae Coquillett （Diptera： Tephritidae）, mating success. In this study, we investigated the effect of these treatments on male B. cucurbitae＇s ability to inhibit female remating. While 14-d-old females were fed on protein diet, 6-d-old males were exposed to one of the following treatments： （i） topical application of methoprene and fed on a protein diet; （ii） no methoprene but fed on a protein diet; （iii） methoprene and sugar-fed only; and （iv） sugar-fed, 14-d-old males acted as controls. Treatments had no effect on a male＇s ability to depress the female remating receptivity in comparison to the control. Females mated with protein-deprived males showed higher remating receptivity than females first mated with protein-fed males. Methoprene and protein diet interaction had a positive effect on male mating success during the first and second mating of females. Significantly more females first mated with sugar-fed males remated with protein-fed males and females first mated with methoprene treated and protein-fed males were more likely to remate with similarly treated males. Females mating latency （time to start mating） was significantly shorter with protein-fed males, and mating duration was significantly longer with protein-fed males compared with protein-deprived males. These results are discussed in the context of methoprene and/or dietary protein as prerelease treatment of sterile males in area-wide control of melon fly integrating the sterile insect technique （SIT）.展开更多
The melon fruit fly, Bactrocera cucurbitae （Coquillett） （Diptera： Tephritidae）, has been the subject of worldwide quarantine and management efforts due to its widespread agricultural impact and potential for rapi...The melon fruit fly, Bactrocera cucurbitae （Coquillett） （Diptera： Tephritidae）, has been the subject of worldwide quarantine and management efforts due to its widespread agricultural impact and potential for rapid range expansion. From its presumed native distribution in India, this species has spread throughout the hot-humid regions of the world. We provide information that reveals population structure, invasion history and population connectivity from 23 locations covering nine countries based on DNA sequences of the mitochondrial cytochrome oxidase I （COI） gene. Forty-two polymorphic sites were described among 38 haplotypes. The most common haplotype, H1, was observed in 73% of the samples distributed among all populations. Highest genetic diversity was seen within populations, and no isolation-by-distance was detected. The western regions （Nepal, Bangladesh, Thailand, Burma and China-west） showed higher haplotype diversity than eastern regions （China-east）. China-Yunnan showed highest levels of genetic diversity in China. Haplotype diversity decreased with longitude from west to east. Together, these analyses suggest that B. cueurbitae has expanded from west to east within a limited geographic scale and recently invaded China through Yunnan Province.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
利用引诱剂喷涂于瓶外与瓶内分别装水0、50、100、200 mL 5种不同诱捕处理方法,在番石榴园内对桔小实蝇和瓜实蝇进行诱集对比。结果发现,在用量1 g的条件下,好粘与稳得引诱剂对桔小实蝇和瓜实蝇均具有诱集效果,两种引诱剂对桔小实蝇的...利用引诱剂喷涂于瓶外与瓶内分别装水0、50、100、200 mL 5种不同诱捕处理方法,在番石榴园内对桔小实蝇和瓜实蝇进行诱集对比。结果发现,在用量1 g的条件下,好粘与稳得引诱剂对桔小实蝇和瓜实蝇均具有诱集效果,两种引诱剂对桔小实蝇的诱集效果前者大于后者,而对瓜实蝇的诱集效果则相反。不同诱捕处理的诱捕效果具有较大的差异性,在不同诱捕处理中,好粘对两种实蝇的诱集效果随加水量的增加而增强,当加水200 mL时达最大值;稳得对两种实蝇的诱集效果随着瓶内水量的增加,表现出先增强后随水量的增加诱集效果逐渐减弱,当加水50 mL时达最大值;但两种引诱剂喷涂在瓶内的不同诱捕处理对两种实蝇的诱集效果均明显好于喷涂瓶外。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.
基金Supported by Special Fund for Agro-scientific Research in the Public Interest( 201103026-1)
文摘Five different trapping treatments, spraying attractant on bottle surface and spraying attractant inside the bottles with 0, 50,100 and 200 mL water, were set to trap Bactrocera dorsalis and B. cucurbitae in guava （Psidium guajava） park. The results showed that when the usage of attractant was 1 g, both Haonian and Wende had trapping effect on B. dorsalis and B. cucurbitae. The trapping effect of Haonian on B. dorsalis was better than that of Wende, while their trapping effects on B. cucurbitae was just the opposite. The trapping effects of different treatments had great difference. The trapping effect of Haonian on two species of fruit flies enhanced with the increasing volume of water, and reached the ma^mum value as the water volume was 200 mL. With the increasing volume of water, the trap- ping effect of Wende on two species of fruit flies first increased, and then decreased, which reached the maximum value as the water volume was 50 mL. Different treatments with attractants spraying inside bottles had better trapping effects on two species of fruit flies than that spraying on bottle surface.
文摘Methoprene （an analogue of juvenile hormone） application and feeding on a protein diet is known to enhance male melon fly, Bactrocera cucurbitae Coquillett （Diptera： Tephritidae）, mating success. In this study, we investigated the effect of these treatments on male B. cucurbitae＇s ability to inhibit female remating. While 14-d-old females were fed on protein diet, 6-d-old males were exposed to one of the following treatments： （i） topical application of methoprene and fed on a protein diet; （ii） no methoprene but fed on a protein diet; （iii） methoprene and sugar-fed only; and （iv） sugar-fed, 14-d-old males acted as controls. Treatments had no effect on a male＇s ability to depress the female remating receptivity in comparison to the control. Females mated with protein-deprived males showed higher remating receptivity than females first mated with protein-fed males. Methoprene and protein diet interaction had a positive effect on male mating success during the first and second mating of females. Significantly more females first mated with sugar-fed males remated with protein-fed males and females first mated with methoprene treated and protein-fed males were more likely to remate with similarly treated males. Females mating latency （time to start mating） was significantly shorter with protein-fed males, and mating duration was significantly longer with protein-fed males compared with protein-deprived males. These results are discussed in the context of methoprene and/or dietary protein as prerelease treatment of sterile males in area-wide control of melon fly integrating the sterile insect technique （SIT）.
文摘The melon fruit fly, Bactrocera cucurbitae （Coquillett） （Diptera： Tephritidae）, has been the subject of worldwide quarantine and management efforts due to its widespread agricultural impact and potential for rapid range expansion. From its presumed native distribution in India, this species has spread throughout the hot-humid regions of the world. We provide information that reveals population structure, invasion history and population connectivity from 23 locations covering nine countries based on DNA sequences of the mitochondrial cytochrome oxidase I （COI） gene. Forty-two polymorphic sites were described among 38 haplotypes. The most common haplotype, H1, was observed in 73% of the samples distributed among all populations. Highest genetic diversity was seen within populations, and no isolation-by-distance was detected. The western regions （Nepal, Bangladesh, Thailand, Burma and China-west） showed higher haplotype diversity than eastern regions （China-east）. China-Yunnan showed highest levels of genetic diversity in China. Haplotype diversity decreased with longitude from west to east. Together, these analyses suggest that B. cueurbitae has expanded from west to east within a limited geographic scale and recently invaded China through Yunnan Province.
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。
