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Wang Y, Gao P, Qin W, Li H, Zheng J, Meng L, Li B. Gut microbiota variation across generations regarding the diet and life stage in Harmonia axyridis (Coleoptera: Coccinellidae). INSECT SCIENCE 2024; 31:1365-1377. [PMID: 38183402 DOI: 10.1111/1744-7917.13310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/22/2023] [Accepted: 11/24/2023] [Indexed: 01/08/2024]
Abstract
We attempt to determine the effect of the dietary switch from a native to non-native prey on the gut microbiota in the predaceous ladybird Harmonia axyridis larvae and adults and examine how the dietary effect may vary across generations. We fed H. axyridis with different diets, native aphid Megoura japonica (Matsumura) versus non-native mealybug Phenacoccus solenopsis (Tinsley), for 5 generations and sequenced microbes in the gut of the 3rd instar larvae and adults of the 1st, 3rd, and 5th generations. In addition, we identified microbes in M. japonica and P. solenopsis. The 2 prey species differed in microbial community as measured by abundances of prevalent microbial genera and diversity. In H. axyridis, abundances of some prevalent microbial genera differed between the 2 diets in the 1st and 3rd generations, but the difference disappeared in the 5th generation; this tendency is more obvious in adults than in larvae. Overall, gut microbial assemblages became gradually cohesive over generations. Microbial diversity differed between diets in the 1st and 3rd generations but became similar in the 5th generation. Major prevalent gut microbial genera are predicted to be associated with metabolic functions of H. axyridis and associated genera are more abundant for consuming the mealybug than the aphid. Our findings from this study suggest that the gut microbiota in H. axyridis is flexible in response to the dietary switch, but tends toward homogeneity in microbial composition over generations.
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Affiliation(s)
- Yansong Wang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Ping Gao
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Wenquan Qin
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Hongran Li
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Jie Zheng
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Ling Meng
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Baoping Li
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
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Morimura H, Ishigami K, Sato T, Sone T, Kikuchi Y. Geographical, Seasonal, and Growth-Related Dynamics of Gut Microbiota in a Grapevine Pest, Apolygus spinolae (Heteroptera: Miridae). MICROBIAL ECOLOGY 2024; 87:112. [PMID: 39249553 PMCID: PMC11383845 DOI: 10.1007/s00248-024-02426-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Accepted: 08/10/2024] [Indexed: 09/10/2024]
Abstract
A number of insects are associated with gut symbiotic microorganisms, wherein symbiotic partners play pivotal metabolic roles for each other such as nutrient supplementation, diet degradation, and pesticide detoxification. Despite the ecological and evolutionary importance of gut microbial communities in insects, their diversity and dynamics remain unclear in many species. The green plant bug Apolygus spinolae, a notorious grapevine pest in Japan, damages grape shoots and severely reduces grape berry yield and quality. The plant bug possesses a simple tubular gut housing ~ 104 bacteria. Here, we investigated geographic, seasonal, and growth-related dynamics of gut microbiota by high-throughput sequencing in 82 individuals (11 nymphs and 71 adults) from five locations in Hokkaido, Japan. In plant bugs, gut microbiota changed dynamically depending on region, season, and developmental stage. Among the gut bacteria, Serratia was consistently and abundantly detected and was significantly affected by seasonal changes. In addition, Caballeronia, known as a specific symbiont in some stinkbug species, was abundantly detected, especially in insects collected in late summer despite A. spinolae complete lack of midgut crypts known as symbiotic organ harboring Caballeronia in other stinkbug species. Considering their prevalence among host bug populations, it is possible these gut microorganisms play a pivotal role in the adaptation of the green plant bug to grapevine fields, although further confirmation through rearing experiments is needed.
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Affiliation(s)
- Hiroyuki Morimura
- Bioproduction Research Institute, Hokkaido Center, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, 062-8517, Japan.
| | - Kota Ishigami
- Bioproduction Research Institute, Hokkaido Center, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, 062-8517, Japan
- Faculty of Agriculture, University of the Ryukyus, Nishihara, Okinawa, 903-0213, Japan
| | - Tomoyuki Sato
- Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan
- Corporate Planning Department, Hokkaido Wine Co., Ltd. 1-130 Asarigawa Onsen, Otaru, 047-8677, Japan
| | - Teruo Sone
- Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan
| | - Yoshitomo Kikuchi
- Bioproduction Research Institute, Hokkaido Center, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, 062-8517, Japan.
- Graduate School of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan.
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Sun Y, Hao Y, Wang S, Chen X. Changes in the bacterial communities of Harmonia axyridis (Coleoptera: Coccinellidae) in response to long-term cold storage and progressive loss of egg viability in cold-stored beetles. Front Microbiol 2024; 15:1276668. [PMID: 38533331 PMCID: PMC10964723 DOI: 10.3389/fmicb.2024.1276668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 02/21/2024] [Indexed: 03/28/2024] Open
Abstract
Bacteria have a profound influence on life history and reproduction of numerous insects, while the associations between hosts and bacteria are substantially influenced by environmental pressures. Cold storage is crucial for extending the shelf life of insects used as tools for biological control, but mostly causes detrimental effects. In this study, we observed a great decrease in egg hatch rate of cold-stored Harmonia axyridis during the later oviposition periods. Furthermore, most eggs produced by their F1 offspring exhibited complete loss of hatchability. We hypothesized that long-term exposure to cold may greatly alter the bacterial community within the reproductive tracts of H. axyridis, which may be an important factor contributing to the loss of egg viability. Through sequencing of the 16S rRNA gene, we discovered considerable changes in the bacterial structure within the reproductive tracts of female cold-stored beetles (LCS_F) compared to non-stored beetles (Control_F), with a notable increase in unclassified_f_Enterobacteriaceae in LCS_F. Furthermore, in accordance with the change of egg hatchability, we observed a slight variation in the microbial community of eggs produced by cold-stored beetles in early (Egg_E) and later (Egg_L) oviposition periods as well as in eggs produced by their F1 offspring (Egg_F1). Functional predictions of the microbial communities revealed a significant decrease in the relative abundance of substance dependence pathway in LCS_F. Moreover, this pathway exhibited relatively lower abundance levels in both Egg_L and Egg_F1 compared to Egg_E. These findings validate that long-term cold storage can greatly modify the bacterial composition within H. axyridis, thereby expanding our understanding of the intricate bacteria-insect host interactions.
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Affiliation(s)
- Yuanxing Sun
- Biocontrol Engineering Laboratory of Crop Diseases and Pests of Gansu Province, College of Plant Protection, Gansu Agricultural University, Lanzhou, China
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Xie BH, Chao L, Wan SJ, Si HR, Yu WD, Huang Z, Wang SG, Desneux N, Tang B, Sun SS. Analysis of gut microbiota of ladybug beetle (Harmonia axyridis) after feeding on different artificial diets. BMC Microbiol 2024; 24:5. [PMID: 38172684 PMCID: PMC10763339 DOI: 10.1186/s12866-023-03155-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 12/12/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND Harmonia axyridis is an effective natural enemy insect to a variety of phloem-sucking pests and Lepidopteran larvae, such as aphids, scabies, and phylloxera, while its industrial production is limited due to unmature artificial diet. Insect intestinal microbiota affect host development and reproduction. The aim of this study is to understand intestinal microbiota composition of H. axyridis and screen effective probiotics on artificial diet. Considering the role of the components and composition of the diet on the structure and composition of the intestinal microbiome, four kinds of diets were set up: (1) aphid; (2) basic diet; (3) basic diet + glucose; (4) basic diet + trehalose. The gut microbiota of H. axyridis was detected after feeding on different diets. RESULTS Results showed that the gut microbiota between artificial diet group and aphid groups were far apart, while the basic and glucose groups were clearly clustered. Besides, the glucose group and trehalose group had one unique phylum, Cryptophyta and Candidatus Saccharibacteria, respectively. The highest abundance of Proteobacteria was found in the aphid diet. The highest abundance of Firmicutes was found in the basic diet. However, the addition of glucose or trehalose alleviated the change. In addition, the relative abundance of Enterobacter, Klebsiella, Enterobacteriaceae_unclassified, Enterobacteriales_unclassified and Serratia in the aphid group was higher than other groups. Moreover, the function of gut genes in each group also showed clear differences. CONCLUSION These results have offered a strong link between artificial diets and gut microbes, and also have provided a theoretical basis for the screening of synergistic probiotics in artificial diet.
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Affiliation(s)
- Bing-Hua Xie
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, China
| | - Lei Chao
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, China
| | - Si-Jing Wan
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, China
| | - Hui-Ru Si
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, China
| | - Wei-Dong Yu
- Zhejiang Dingyi Biotechnology Corporation, Quzhou, 324100, Zhejiang, China
| | - Zhen Huang
- Zhejiang Dingyi Biotechnology Corporation, Quzhou, 324100, Zhejiang, China
| | - Shi-Gui Wang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, China
| | | | - Bin Tang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, China.
| | - Si-Si Sun
- Guizhou Institute of Mountainous Meteorological Sciences, Guiyang, 550002, Guizhou, China.
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Wang Y, Gao P, Zheng J, Li H, Meng L, Li B. Effects of parasitism by a parasitoid wasp on the gut microbiota in a predaceous lady beetle host. PEST MANAGEMENT SCIENCE 2023; 79:4501-4507. [PMID: 37418555 DOI: 10.1002/ps.7652] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 06/17/2023] [Accepted: 07/07/2023] [Indexed: 07/09/2023]
Abstract
BACKGROUND The gut microbiota has an intimate relationship with insect hosts and this relationship can become complicated with parasitic organisms being involved with the host. To date there has been limited evidence for the relevance of parasitism of the host by parasitoids to host gut microbiota, especially in host insect predators. Here, our study examined gut microbiotas in larvae of the predaceous lady beetle, Coccinella septempunctata, in response to their parasitism by Homalotylus eytelweinii regarding the development progress of offspring parasitoids. RESULTS Overall 58.5% of gut bacterial operational taxonomic units (OTUs) in the parasitized lady beetle were different from those in the unparasitized host. The phylum Proteobacteria abundance increased while Firmicutes decreased in parasitized hosts compared to the unparasitized. The abundance of genus Aeribacillus decreased substantially in the parasitized lady beetle across all stages of the offspring development compared to the unparasitized host. The α-diversity of the gut microbiota in a parasitized lady beetle larva increased at the early stage of offspring parasitoids and then returned over the intermediate and later stages. Analyses of β-diversity indicated that the gut microbial community in a parasitized lady beetle was distinct from that in an unparasitized one and different between early or middle and late stages of offspring parasitoids in parasitized hosts. CONCLUSION Our results provide evidence for the relevance of the gut microbiota to interactions between a lady beetle host and its parasitoid. Our study provides a starting point for further investigations of the role the gut microbiota may play in host-parasitoid interactions. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Yansong Wang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Ping Gao
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Jie Zheng
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Hongran Li
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Ling Meng
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Baoping Li
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
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