为探讨了甘南尕海自然保护区草原毛虫(Gynaephora aureate Ghou et Ying)肠道细菌群落结构组成,采集甘南尕海高寒草地3个不同地点的4龄草原毛虫幼虫,通过Illumina Hi Seq高通量测序平台对甘南尕海自然保护区草原毛虫肠道细菌群落结构组...为探讨了甘南尕海自然保护区草原毛虫(Gynaephora aureate Ghou et Ying)肠道细菌群落结构组成,采集甘南尕海高寒草地3个不同地点的4龄草原毛虫幼虫,通过Illumina Hi Seq高通量测序平台对甘南尕海自然保护区草原毛虫肠道细菌群落结构组成进行分析,总共获得了206 098条序列。甘南尕海草原毛虫中肠的细菌由Proteobacteria(变形菌门)、Bacteroidetes(拟杆菌门)、Firmicutes(厚壁菌门)、Actinobacteria(放线菌门)、Tenericutes(软壁菌门)、Verrucomicrobia(疣微菌门)、Fusobacteria(梭杆菌门)、Acidobacteria(酸杆菌)、Deinococcus-Thermus(异常球菌-栖热菌门)和Planctomycetes(浮霉菌门)等10个门组成,优势菌群为Proteobacteria和Bacteroidetes。在属的水平上,Providencia(普罗威登斯菌)含量最丰富,其次是Brevundimonas(单胞菌属)、Bacteroides(拟杆菌属)和Methylotenera(甲基柔膜菌属)。阐明了甘南尕海草原毛虫肠道细菌群落的组成,为研究草原毛虫肠道微生物和草原毛虫对人畜的危害提供理论基础。展开更多
To understand trophic interactions and the precise ecological role of each predatory species,it is important to know which arthropod and plant resources are used by generalist predators in agroecosystems.Molecular app...To understand trophic interactions and the precise ecological role of each predatory species,it is important to know which arthropod and plant resources are used by generalist predators in agroecosystems.Molecular approaches,such as the use of high-throughput sequencing(HTS),play a key role in identifying these resources.This study develops a multiprimer metabarcoding approach for screening the most common trophic interactions of two predatory arthropods with contrasting morphologies,Rhagonycha fulva(Coleoptera:Cantharidae)and Anthocoris nemoralis(Hemiptera:Anthocoridae)collected from a peach crop.To reduce the time and cost of this metabarcoding approach,we first evaluated the effect of using two different predator-pools of different size(10 and 23 individuals of the same species).We also used our system to analyze the performance of one and two primer pairs in the same library.Our results show that the analysis of 23 individuals together with the use of two primer pairs in the same library optimize the HTS analysis.Using these best-performing conditions,we then analyzed the entire bodies of field-collected predators as well as the washing solutions used to clean the insect bodies.We were able to identify both gut content(i.e.,diet)and external pollen load(i.e.,on the insects’bodies).This study also demonstrates the importance of washing predatory insects’bodies prior to HTS analysis when the target species have a considerable size(>10 mm)and hairy structures.This metabarcoding approach has significant potential for the study of trophic links in agriculture,revealing expected and unexpected trophic relationships.展开更多
文摘为探讨了甘南尕海自然保护区草原毛虫(Gynaephora aureate Ghou et Ying)肠道细菌群落结构组成,采集甘南尕海高寒草地3个不同地点的4龄草原毛虫幼虫,通过Illumina Hi Seq高通量测序平台对甘南尕海自然保护区草原毛虫肠道细菌群落结构组成进行分析,总共获得了206 098条序列。甘南尕海草原毛虫中肠的细菌由Proteobacteria(变形菌门)、Bacteroidetes(拟杆菌门)、Firmicutes(厚壁菌门)、Actinobacteria(放线菌门)、Tenericutes(软壁菌门)、Verrucomicrobia(疣微菌门)、Fusobacteria(梭杆菌门)、Acidobacteria(酸杆菌)、Deinococcus-Thermus(异常球菌-栖热菌门)和Planctomycetes(浮霉菌门)等10个门组成,优势菌群为Proteobacteria和Bacteroidetes。在属的水平上,Providencia(普罗威登斯菌)含量最丰富,其次是Brevundimonas(单胞菌属)、Bacteroides(拟杆菌属)和Methylotenera(甲基柔膜菌属)。阐明了甘南尕海草原毛虫肠道细菌群落的组成,为研究草原毛虫肠道微生物和草原毛虫对人畜的危害提供理论基础。
基金The authors would like to thank Angels Tudo for technical assistance during the field collection of the.samples and laboratory procedures.We would like also to acknowledge the owners of the analyzed crop plot for allowing us access to their fields.This research was funded by the Spanish Ministry of Economy,Industry and Competitiveness(grant AGL2014-53970-C2-2-R)by the CERCA Program(Centres de Recerca de C atalunya)of the Generalitat de Catalunya.Ivan Batuecas received.funding from the grant BES-2015-075700 from the Span-ish Mimistry of Science,Innovation and Universities.
文摘To understand trophic interactions and the precise ecological role of each predatory species,it is important to know which arthropod and plant resources are used by generalist predators in agroecosystems.Molecular approaches,such as the use of high-throughput sequencing(HTS),play a key role in identifying these resources.This study develops a multiprimer metabarcoding approach for screening the most common trophic interactions of two predatory arthropods with contrasting morphologies,Rhagonycha fulva(Coleoptera:Cantharidae)and Anthocoris nemoralis(Hemiptera:Anthocoridae)collected from a peach crop.To reduce the time and cost of this metabarcoding approach,we first evaluated the effect of using two different predator-pools of different size(10 and 23 individuals of the same species).We also used our system to analyze the performance of one and two primer pairs in the same library.Our results show that the analysis of 23 individuals together with the use of two primer pairs in the same library optimize the HTS analysis.Using these best-performing conditions,we then analyzed the entire bodies of field-collected predators as well as the washing solutions used to clean the insect bodies.We were able to identify both gut content(i.e.,diet)and external pollen load(i.e.,on the insects’bodies).This study also demonstrates the importance of washing predatory insects’bodies prior to HTS analysis when the target species have a considerable size(>10 mm)and hairy structures.This metabarcoding approach has significant potential for the study of trophic links in agriculture,revealing expected and unexpected trophic relationships.
