Pub Date : 2023-12-11DOI: 10.1127/entomologia/2023/2135
Giulia Giunti, Giovanni Benelli, Orlando Campolo, A. Canale, A. Kapranas, Pablo Liedo, Marc De Meyer, D. Nestel, Luca Ruiu, Francesca Scolari, Xingeng Wang, Nikos T. Papadopoulos
{"title":"Biology, ecology and invasiveness of the Mediterranean fruit fly, Ceratitis capitata: a review","authors":"Giulia Giunti, Giovanni Benelli, Orlando Campolo, A. Canale, A. Kapranas, Pablo Liedo, Marc De Meyer, D. Nestel, Luca Ruiu, Francesca Scolari, Xingeng Wang, Nikos T. Papadopoulos","doi":"10.1127/entomologia/2023/2135","DOIUrl":"https://doi.org/10.1127/entomologia/2023/2135","url":null,"abstract":"","PeriodicalId":11728,"journal":{"name":"Entomologia Generalis","volume":"9 22","pages":""},"PeriodicalIF":6.9,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138584307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-11DOI: 10.1127/entomologia/2023/2224
Sofia V. Prieto, Matteo Brunetti, Giulia Magoga, Bianca Orrù, Elena Gonella, Matteo Montagna, Alberto Alma
Pentatomid insects harbour an obligate gut symbiont, vertically transmitted via egg smearing by the females. The disruption of symbiont acquisition can be exploited for pest management, by spraying the egg surface with anti-symbiont agents, yet the insect response to symbiont deprivation remains a determining aspect of the success of this strategy. Here the effect of anti-symbiont egg masses treatment was assessed in an Italian population of the southern green stink bug Nezara viridula under field and laboratory conditions. In soybean fields, N. viridula was poorly affected by treatment, whereas in laboratory, nymphs deriving from treated egg masses underwent increased mortality and symbiont abundance decline. The primary symbiont dominated the microbiome of non-treated nymphs showing low mortality. Conversely, dysbiosis was recorded in treated samples as well as in control nymphs with high mortality. Nonetheless, dysbiosis induced by treatment was not in all cases associated with high mortality, and symbiont was missing in some non-treated samples as well. Five variants of a Pantoea symbiont were found, with higher variant diversity in untreated samples with low mortality. Altogether, our results provide information about the gut microbiota dynamics in the early nymphal instars of N. viridula and suggest a still incomplete dependence on the symbiont. However, egg masses anti-symbiont treatment increased mortality, therefore symbiont-targeted control may be used against N. viridula as a supplementary tool under high pest pressure.
{"title":"The intrinsic diversity of Nezara viridula gut symbionts affects the host fitness decline promoted by primary symbiont elimination","authors":"Sofia V. Prieto, Matteo Brunetti, Giulia Magoga, Bianca Orrù, Elena Gonella, Matteo Montagna, Alberto Alma","doi":"10.1127/entomologia/2023/2224","DOIUrl":"https://doi.org/10.1127/entomologia/2023/2224","url":null,"abstract":"Pentatomid insects harbour an obligate gut symbiont, vertically transmitted via egg smearing by the females. The disruption of symbiont acquisition can be exploited for pest management, by spraying the egg surface with anti-symbiont agents, yet the insect response to symbiont deprivation remains a determining aspect of the success of this strategy. Here the effect of anti-symbiont egg masses treatment was assessed in an Italian population of the southern green stink bug Nezara viridula under field and laboratory conditions. In soybean fields, N. viridula was poorly affected by treatment, whereas in laboratory, nymphs deriving from treated egg masses underwent increased mortality and symbiont abundance decline. The primary symbiont dominated the microbiome of non-treated nymphs showing low mortality. Conversely, dysbiosis was recorded in treated samples as well as in control nymphs with high mortality. Nonetheless, dysbiosis induced by treatment was not in all cases associated with high mortality, and symbiont was missing in some non-treated samples as well. Five variants of a Pantoea symbiont were found, with higher variant diversity in untreated samples with low mortality. Altogether, our results provide information about the gut microbiota dynamics in the early nymphal instars of N. viridula and suggest a still incomplete dependence on the symbiont. However, egg masses anti-symbiont treatment increased mortality, therefore symbiont-targeted control may be used against N. viridula as a supplementary tool under high pest pressure.","PeriodicalId":11728,"journal":{"name":"Entomologia Generalis","volume":"83 1","pages":""},"PeriodicalIF":6.9,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138547931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-11DOI: 10.1127/entomologia/2023/2120
Wei Li, Abulimiti Abudukadier, Zhiling Chen, Chong Zhan, Shichang Zhang, Jie Liu, Yao Zhao, Yu Peng
As one of the most important invasive and destructive pests in the world, the fall armyworm Spodoptera frugiperda (Lepidoptera: Noctuidae) reduces crop yield and causes economic loss. It is critical to find an appropriate controlling approach. This study aimed to determine the insecticidal activities of botanical insecticides (30% tea saponin, 0.6% matrine and a mixture thereof) on fall armyworm larvae, as well as the effects of sublethal concentrations of an optimal ratio of the mixture, on the survival rate, developmental duration, pupation rate, emergence rate, and body weight of fall armyworm. In addition, we evaluated the control effect of the insecticides (30% tea saponin, 0.6% matrine, optimal ratio of mixture along with 0.3% azadirachtin and 36% chlorfenapyr) and toxicity to natural enemies in field conditions. The results showed that all botanical insecticides and mixtures were toxic, and the insecticidal bioactivity of 10:1 volume ratio mixture was the highest at 96 hours, with a median lethal concentration (LC50) of 56.561 mg/mL. Meanwhile, the sublethal concentration of a 10:1 volume ratio of the mixture significantly affected the survival rate, prolonged developmental duration and reduced emergence rates and pupal weights, but it did not affect the pupation rates of fall armyworm. Furthermore, it has harmless or slightly harmful effects on natural enemies. Our study provides a novel environmentally friendly and natural enemy-friendly approach to controlling fall armyworms.
{"title":"Combining tea saponin and matrine botanical insecticides is highly effective against fall armyworm Spodoptera frugiperda","authors":"Wei Li, Abulimiti Abudukadier, Zhiling Chen, Chong Zhan, Shichang Zhang, Jie Liu, Yao Zhao, Yu Peng","doi":"10.1127/entomologia/2023/2120","DOIUrl":"https://doi.org/10.1127/entomologia/2023/2120","url":null,"abstract":"As one of the most important invasive and destructive pests in the world, the fall armyworm Spodoptera frugiperda (Lepidoptera: Noctuidae) reduces crop yield and causes economic loss. It is critical to find an appropriate controlling approach. This study aimed to determine the insecticidal activities of botanical insecticides (30% tea saponin, 0.6% matrine and a mixture thereof) on fall armyworm larvae, as well as the effects of sublethal concentrations of an optimal ratio of the mixture, on the survival rate, developmental duration, pupation rate, emergence rate, and body weight of fall armyworm. In addition, we evaluated the control effect of the insecticides (30% tea saponin, 0.6% matrine, optimal ratio of mixture along with 0.3% azadirachtin and 36% chlorfenapyr) and toxicity to natural enemies in field conditions. The results showed that all botanical insecticides and mixtures were toxic, and the insecticidal bioactivity of 10:1 volume ratio mixture was the highest at 96 hours, with a median lethal concentration (LC50) of 56.561 mg/mL. Meanwhile, the sublethal concentration of a 10:1 volume ratio of the mixture significantly affected the survival rate, prolonged developmental duration and reduced emergence rates and pupal weights, but it did not affect the pupation rates of fall armyworm. Furthermore, it has harmless or slightly harmful effects on natural enemies. Our study provides a novel environmentally friendly and natural enemy-friendly approach to controlling fall armyworms.","PeriodicalId":11728,"journal":{"name":"Entomologia Generalis","volume":"13 1","pages":""},"PeriodicalIF":6.9,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138540233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-11DOI: 10.1127/entomologia/2023/2342
Nicolas Desneux, Giovanni Benelli, François Verheggen
{"title":"Entomologia Generalis special contents: past, present, and future","authors":"Nicolas Desneux, Giovanni Benelli, François Verheggen","doi":"10.1127/entomologia/2023/2342","DOIUrl":"https://doi.org/10.1127/entomologia/2023/2342","url":null,"abstract":"","PeriodicalId":11728,"journal":{"name":"Entomologia Generalis","volume":"13 14","pages":""},"PeriodicalIF":6.9,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138584654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Combination of diflubenzuron and RNAi technology to improve the control effect of Helicoverpa armigera","authors":"Dongdong Chu, Saibo Xu, Xiang Li, Haichao Li, Xuexia Miao, Shiheng An, Ruobing Guan","doi":"10.1127/entomologia/2023/2252","DOIUrl":"https://doi.org/10.1127/entomologia/2023/2252","url":null,"abstract":"","PeriodicalId":11728,"journal":{"name":"Entomologia Generalis","volume":"26 1","pages":""},"PeriodicalIF":6.9,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138593672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-24DOI: 10.1127/entomologia/2023/2168
Andrea Chacon Hurtado, Fanny Ruhland, Antoine Boullis, François J. Verheggen
Wireworms (Agriotes sp.) represent a significant global threat in agriculture as soil-dwelling insect pests. Previous field observations have indicated varying susceptibilities of different potato varieties to wireworm attacks. In this laboratory study, we used three potato varieties known for displaying contrasted levels of susceptibility: Monalisa (high), Spunta (moderate) and Charlotte (low). We tested two groups of hypotheses: (1) wireworms display higher feeding activities when fed on a susceptible variety, which is also linked to faster larval development; (2) the most susceptible varieties are also the most attractive for wireworms, which can be explained by differences in their emissions of volatile organic compounds (VOCs), that guide larval foraging behaviour. Based on the results of our bioassays, we confirm our first hypothesis: wireworms feeding activity was higher on Monalisa tuber (i.e. longer galleries, lower weight gain of tubers), and these wireworms gained more weight and size than those that fed on the Charlotte variety, after 50 weeks of feeding. Based on our behavioural assays, we found that wireworms exhibit greater attraction towards Spunta tubers as opposed to those of Monalisa and Charlotte. The volatile collection analyses reveal a complex blend of 65 VOCs from potato tubers but do not suggest significant differences across the three varieties. The volatile profiles were however different between the two tuber phenological stages considered here. This study provides insights into the mechanisms of host detection and selection by wireworms.
{"title":"Potato cultivar susceptibility to wireworms: feeding behaviour, fitness and semiochemicals-based host selection","authors":"Andrea Chacon Hurtado, Fanny Ruhland, Antoine Boullis, François J. Verheggen","doi":"10.1127/entomologia/2023/2168","DOIUrl":"https://doi.org/10.1127/entomologia/2023/2168","url":null,"abstract":"Wireworms (Agriotes sp.) represent a significant global threat in agriculture as soil-dwelling insect pests. Previous field observations have indicated varying susceptibilities of different potato varieties to wireworm attacks. In this laboratory study, we used three potato varieties known for displaying contrasted levels of susceptibility: Monalisa (high), Spunta (moderate) and Charlotte (low). We tested two groups of hypotheses: (1) wireworms display higher feeding activities when fed on a susceptible variety, which is also linked to faster larval development; (2) the most susceptible varieties are also the most attractive for wireworms, which can be explained by differences in their emissions of volatile organic compounds (VOCs), that guide larval foraging behaviour. Based on the results of our bioassays, we confirm our first hypothesis: wireworms feeding activity was higher on Monalisa tuber (i.e. longer galleries, lower weight gain of tubers), and these wireworms gained more weight and size than those that fed on the Charlotte variety, after 50 weeks of feeding. Based on our behavioural assays, we found that wireworms exhibit greater attraction towards Spunta tubers as opposed to those of Monalisa and Charlotte. The volatile collection analyses reveal a complex blend of 65 VOCs from potato tubers but do not suggest significant differences across the three varieties. The volatile profiles were however different between the two tuber phenological stages considered here. This study provides insights into the mechanisms of host detection and selection by wireworms.","PeriodicalId":11728,"journal":{"name":"Entomologia Generalis","volume":"63 1","pages":""},"PeriodicalIF":6.9,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138540211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tuta absoluta (Meyrick) is a cosmopolitan invader and one of the most serious pests of tomato. This pest has expanded rapidly in China since it initially invaded Xinjiang in the northwest in 2017 and Yunnan in the south in early 2018. More complete knowledge of the migration patterns and genetic structure of this pest is important for implementing effective management strategies. To fill this knowledge gap, the COI gene of T. absoluta was sequenced based on nationwide routine monitoring. This study showed a new invasion into Gansu and Inner Mongolia, indicating ongoing expansion of this pest. Most populations of T. absoluta, both in China and worldwide, have high genetic homogeneity. Nevertheless, some degree of genetic variability was found in populations in southern China, especially in Yunnan. Two distinct haplogroups were distinguished, and clade A was predominant at the global level. The high level of sequence divergence indicated the possible existence of cryptic species. Furthermore, FST and analysis of molecular variance (AMOVA) revealed weak but significant differentiation between the Xinjiang northwestern group and southern group/subgroups and provides compelling evidence of the different dispersal avenues of T. absoluta in northwestern and southern China. T. absoluta likely established bridgehead populations in Yunnan and then spread rapidly throughout this province and neighboring territories in southern China. Knowledge regarding genetic diversity, population structure and dispersal pattern is valuable for improving management guidelines for this pest. Strict plant quarantines, local eradication and practical control measures are needed to solve the problem caused by T. absoluta.
{"title":"Genetic diversity and genetic differentiation pattern of Tuta absoluta across China","authors":"Yusheng Wang, Xiaocao Tian, Hao Wang, Cristina Castañé, Judit Arnó, Suran Wu, Xiaoqing Xian, Nicolas Desneux, Wanxue Liu, Yibo Zhang, Guifen Zhang, Fanghao Wan","doi":"10.1127/entomologia/2023/2026","DOIUrl":"https://doi.org/10.1127/entomologia/2023/2026","url":null,"abstract":"Tuta absoluta (Meyrick) is a cosmopolitan invader and one of the most serious pests of tomato. This pest has expanded rapidly in China since it initially invaded Xinjiang in the northwest in 2017 and Yunnan in the south in early 2018. More complete knowledge of the migration patterns and genetic structure of this pest is important for implementing effective management strategies. To fill this knowledge gap, the COI gene of T. absoluta was sequenced based on nationwide routine monitoring. This study showed a new invasion into Gansu and Inner Mongolia, indicating ongoing expansion of this pest. Most populations of T. absoluta, both in China and worldwide, have high genetic homogeneity. Nevertheless, some degree of genetic variability was found in populations in southern China, especially in Yunnan. Two distinct haplogroups were distinguished, and clade A was predominant at the global level. The high level of sequence divergence indicated the possible existence of cryptic species. Furthermore, FST and analysis of molecular variance (AMOVA) revealed weak but significant differentiation between the Xinjiang northwestern group and southern group/subgroups and provides compelling evidence of the different dispersal avenues of T. absoluta in northwestern and southern China. T. absoluta likely established bridgehead populations in Yunnan and then spread rapidly throughout this province and neighboring territories in southern China. Knowledge regarding genetic diversity, population structure and dispersal pattern is valuable for improving management guidelines for this pest. Strict plant quarantines, local eradication and practical control measures are needed to solve the problem caused by T. absoluta.","PeriodicalId":11728,"journal":{"name":"Entomologia Generalis","volume":"2 1","pages":""},"PeriodicalIF":6.9,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138540209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：