Bulletin of Entomological Research最新文献

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How does Neoseiulus californicus McGregor respond to sublethal doses of entomopathogenic fungus Beauveria bassiana (Hyp.: Cordycipitaceae)? Neoseiulus californicus McGregor 对亚致死剂量的昆虫病原真菌 Beauveria bassiana(Hyp.)
IF 16.4 3区 农林科学
Bulletin of Entomological Research Pub Date : 2024-10-01 Epub Date: 2024-09-27 DOI: 10.1017/S0007485324000397
Katayoon Kheradmand, Mahmoud Heidari, Amin Sedaratian-Jahromi, Reza Talaei-Hassanloui, Mohammadreza Havasi
{"title":"How does <i>Neoseiulus californicus</i> McGregor respond to sublethal doses of entomopathogenic fungus <i>Beauveria bassiana</i> (Hyp.: Cordycipitaceae)?","authors":"Katayoon Kheradmand, Mahmoud Heidari, Amin Sedaratian-Jahromi, Reza Talaei-Hassanloui, Mohammadreza Havasi","doi":"10.1017/S0007485324000397","DOIUrl":"10.1017/S0007485324000397","url":null,"abstract":"<p><p>Two-spotted spider mite, <i>Tetranychus urticae</i> Koch (Acari: Prostigmata), is one of the most economically important mite species, mainly controlled by chemical acaricides. Natural enemies have been assessed as reliable alternatives for management of this phytophagous mite. In the current project, demographic characteristics of <i>Neoseiulus californicus</i> McGregor (Acari: Phytoseiidae) to sublethal concentrations (LC<sub>10</sub> = 6.76 × 10<sup>2</sup>, LC<sub>20</sub> = 8.74 × 10<sup>3</sup> and LC<sub>30</sub> = 55.38 × 10<sup>3</sup> conidia ml<sup>-1</sup>) of entomopathogenic fungus, <i>Beauveria bassiana</i> (Bals.) Vuill. TV strain were investigated under laboratory conditions at 25 ± 2°C, 70 ± 5% RH and a photoperiod of 16:8 (L:D) h. Our results indicated that when adult predators were exposed to LC<sub>20</sub> and LC<sub>30</sub> of <i>B. bassiana</i>, the oviposition period was significantly reduced compared with other treatments. <i>Neoseiulus californicus</i> fecundity was significantly greater in the control (37 eggs) than in LC<sub>30</sub> (24 eggs). Life table analysis revealed that the net reproductive rate (<i>R</i><sub>0</sub>) declined as the sublethal concentrations of <i>B. bassiana</i> increased. The most striking result to emerge from the data is that not only intrinsic (<i>r</i>); but also, finite rate of increase (λ) was not significantly affected by different concentrations of <i>B. bassiana</i>. Our findings revealed some potential interactions of <i>B. bassiana</i> and <i>N. californicus</i> during their combinations for managing <i>T. urticae</i> that may be helpful for optimising control of this important pest.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"598-605"},"PeriodicalIF":16.4,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142342126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reproductive response of the predator Tenuisvalvae notata (Mulsant) (Coleoptera: Coccinellidae) to temperatures outside their ideal thermal range. 捕食者Tenuisvalvae notata (Mulsant) (Coleoptera: Coccinellidae)对超出其理想温度范围的温度的繁殖反应。
IF 16.4 3区 农林科学
Bulletin of Entomological Research Pub Date : 2024-10-01 Epub Date: 2024-10-18 DOI: 10.1017/S0007485324000476
Enggel Beatriz S Carmo, Christian S A Silva-Torres, Jorge Braz Torres
{"title":"Reproductive response of the predator <i>Tenuisvalvae notata</i> (Mulsant) (Coleoptera: Coccinellidae) to temperatures outside their ideal thermal range.","authors":"Enggel Beatriz S Carmo, Christian S A Silva-Torres, Jorge Braz Torres","doi":"10.1017/S0007485324000476","DOIUrl":"10.1017/S0007485324000476","url":null,"abstract":"<p><p>Global warming has driven changes in the biology and fitness of organisms that need to adapt to temperatures outside of their optimal range to survive. This study investigated aspects of reproduction and survival of the lady beetle <i>Tenuisvalvae notata</i> (Mulsant) (Coleoptera: Coccinellidae) subjected to temperatures that varied from its optimal (28°C) to a gradual decrease (12, 14, 16, and 18°C) and increase (32, 34, 35, and 36°C) over time at a rate of 1°C/day. Fertility, fecundity, oviposition period, and survival were determined. There was a significant reduction in fertility and fecundity at temperatures below 18°C and above 34°C, whereas survival was reduced only above 34°C. Additionally, we evaluated that fecundity was the lowest when females were kept at low temperature, and when males were kept under high temperature. Therefore, if the <i>T. notata</i> remained for a long period under exposure to temperatures outside the ideal range, then the species could present different reproductive responses for each sex to high and low temperatures. This factor must be considered when releasing natural enemies into an area to understand the effect of temperature on the decline of a local population a few generations after release.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"691-698"},"PeriodicalIF":16.4,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142458592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Making sense of chromosome polymorphisms in two leptysmine grasshoppers. 了解两种瘦蝗虫的染色体多态性。
IF 1.6 3区 农林科学
Bulletin of Entomological Research Pub Date : 2024-10-01 Epub Date: 2024-10-23 DOI: 10.1017/S0007485324000579
Pablo C Colombo
{"title":"Making sense of chromosome polymorphisms in two leptysmine grasshoppers.","authors":"Pablo C Colombo","doi":"10.1017/S0007485324000579","DOIUrl":"10.1017/S0007485324000579","url":null,"abstract":"<p><p>The touchstone of the 'New Synthesis' was population cytogenetics -rather than genetics - due to the abundant polymorphic inversions in the genus Drosophila. Grasshoppers were not a material of choice because of their conservative karyotypes. However, nowadays seven species of Acrididae were described for polymorphic centric fusions, five of them in South-America. <i>Leptysma argentina</i> and the likely biocontrol of water-hyacinth <i>Cornops aquaticum</i> are semiaquatic Leptysminae (Acrididae: Orthoptera), polymorphic for centric fusions, supernumerary segments and a B-chromosome. We sought to demonstrate the operation of natural selection on them, by detecting: (I) latitudinal clines; (II) regression on environmental variables; (III) deviation from null models, such as linkage equilibrium; (IV) seasonal variation; (V) comparison between age classes and (VI) selection component analyses. All of them were confirmed in <i>L. argentina</i>, just (I) and (II) in <i>C</i>. <i>aquaticum.</i> Furthermore, the relationship between karyotype, phenotype and recombination was confirmed in both species. Karyotype-phenotype relationship may be due to the body enlargement the fusions are associated with, along with a latitudinal transition in voltinism. Karyotype-related recombination reduction in both species may help explain all fusion clines, although there is probably more than one factor at work. No effects were noticed for a supernumerary segment in <i>L. argentina</i>, but it is ubiquitous and certainly non-neutral. <i>C. aquaticum</i> is poised for introduction in South-Africa as a biocontrol of water-hyacinths; the recent discovery of four more segment polymorphisms may imply more chromosomal markers to make sense of its genetic system.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"717-727"},"PeriodicalIF":1.6,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142495574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Parasitic behaviour and developmental morphology of Anastatus japonicus reared on the factitious host Antheraea pernyi. 在事实宿主 Antheraea pernyi 上饲养的日本鹅膏蕈(Anastatus japonicus)的寄生行为和发育形态。
IF 16.4 3区 农林科学
Bulletin of Entomological Research Pub Date : 2024-10-01 Epub Date: 2024-09-25 DOI: 10.1017/S0007485324000518
Run-Zhi Wang, Xu Chen, Talha Tariq, Rui-E Lv, Yong-Ming Chen, Lian-Sheng Zang
{"title":"Parasitic behaviour and developmental morphology of <i>Anastatus japonicus</i> reared on the factitious host <i>Antheraea pernyi</i>.","authors":"Run-Zhi Wang, Xu Chen, Talha Tariq, Rui-E Lv, Yong-Ming Chen, Lian-Sheng Zang","doi":"10.1017/S0007485324000518","DOIUrl":"10.1017/S0007485324000518","url":null,"abstract":"<p><p>The egg parasitoid <i>Anastatus japonicus</i> is a key natural enemy in the biological control of various agricultural and forestry pests. It is particularly used against the brown marmorated stink bug <i>Halyomorpha halys</i> and the emerging defoliator pest <i>Caligula japonica</i> in East Asia. It has been proved that the eggs of <i>Antheraea pernyi</i> can be used as a factitious host for the mass production of <i>A. japonicus</i>. This study systematically documented the parasitic behaviour and developmental morphology exhibited by <i>A. japonicus</i> on the eggs of <i>A. pernyi</i>. The parasitic behaviour of <i>A. japonicus</i> encompassed ten steps including searching, antennation, locating, digging, probing, detecting, oviposition, host-feeding, grooming, and resting. Oviposition, in particular, was observed to occur in three stages, with the parasitoids releasing eggs during the second stage when the body remained relatively static. Among all the steps of parasitic behaviour, probing accounted for the longest time, constituting 33.1% of the whole time. It was followed by digging (19.3%), oviposition (18.5%), antennation (9.6%), detecting (7.4%), and the remaining steps, each occupying less than 5.0% of the total event time. The pre-emergence of adult <i>A. japonicus</i> involves four stages: egg (0 to 2nd day), larva (3rd to 9th day), pre-pupa (10th to 13th day), pupa (14th to 22nd day), and subsequent development into an adult. Typically, it takes 25.60 ± 0.30 days to develop from an egg to an adult at 25℃. This information increases the understanding of the biology of <i>A. japonicus</i> and may provide a reference for optimising reproductive devices.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"663-673"},"PeriodicalIF":16.4,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142342127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Predicting the geographical potential distribution of species Opisina arenosella Walker in China under different climate scenarios based on the MaxEnt model. 基于MaxEnt模型预测不同气候情景下中国鹅掌楸Opisina arenosella Walker物种的地理分布潜力。
IF 16.4 3区 农林科学
Bulletin of Entomological Research Pub Date : 2024-10-01 Epub Date: 2024-10-02 DOI: 10.1017/S0007485324000464
Zhiling Wang, Zhihang Zhuo, Yaqin Peng, Danping Xu
{"title":"Predicting the geographical potential distribution of species <i>Opisina arenosella</i> Walker in China under different climate scenarios based on the MaxEnt model.","authors":"Zhiling Wang, Zhihang Zhuo, Yaqin Peng, Danping Xu","doi":"10.1017/S0007485324000464","DOIUrl":"10.1017/S0007485324000464","url":null,"abstract":"<p><p>As global warming increases with the frequency of extreme weather, the distribution of species is inevitably affected. Among them, highly damaging invasive species are of particular concern. Being able to effectively predict the geographic distribution of invasive species and future distribution trends is a key entry point for their control. <i>Opisina arenosella</i> Walker is an invasive species, and its ability to live on the backs of foliage and generate canals to hide adds to the difficulty of control. In this paper, the current and future distributions of <i>O. arenosella</i> under three typical emission scenarios in 2050 and 2090 are projected based on the MaxEnt model combining 19 bioclimatic variables. Filter through the variables to find the four key environment variables: BIO 1, BIO 6, BIO 11 and BIO 4. The results show that <i>O. arenosella</i> is distributed only in the eight provinces of Tibet, Yunnan, Fujian, Guangxi, Taiwan, Guangdong, Hong Kong and Hainan in the southeastern region. Its high suitability area is concentrated in Taiwan and Hainan. In the long run, highly suitable areas will continue to increase in size, while moderately suitable areas and poorly suitable areas will decrease to varying degrees. This paper aims to provide theoretical references for the control of <i>O. arenosella</i>.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"682-690"},"PeriodicalIF":16.4,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142361124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Temperature and relative humidity mediated life processes of Spodoptera species (Lepidoptera: Noctuidae). 温度和相对湿度介导的鞘翅目物种(鳞翅目:夜蛾科)的生命过程。
IF 1.6 3区 农林科学
Bulletin of Entomological Research Pub Date : 2024-10-01 Epub Date: 2024-09-30 DOI: 10.1017/S000748532400035X
Rameswor Maharjan, Seoyeon Hong, Youngnam Yoon, Yunwoo Jang, Kido Park
{"title":"Temperature and relative humidity mediated life processes of <i>Spodoptera</i> species (Lepidoptera: Noctuidae).","authors":"Rameswor Maharjan, Seoyeon Hong, Youngnam Yoon, Yunwoo Jang, Kido Park","doi":"10.1017/S000748532400035X","DOIUrl":"https://doi.org/10.1017/S000748532400035X","url":null,"abstract":"<p><p>Anthropogenic-mediated climate change is expected to negatively affect pest management in agriculture. Hence, we investigated the oviposition, immature mortality, and developmental processes of <i>Spodoptera</i> species (<i>Spodoptera exigua</i> (Hübner) and <i>Spodoptera litura</i> (Fabricius)) under different temperatures (20, 25, and 30°C) and relative humidity (RH) (30-35, 50-55, 70-75, and 90-95%) conditions. For fecundity, mouths of each <i>Spodoptera</i> species were released into a rectangular box whose inner walls were covered with a sheet of white paper for each combination of temperature and RH. The mouths were kept inside the box to deposit eggs for 72 h. Temperature and RH significantly affected the fecundity, with the maximum number of eggs laid in 70-75% at 30°C. The highest egg and larval mortalities were recorded in 30-35 and 90-95% RH, respectively. Temperature and RH greatly affected the developmental period (egg-adult) and adult emergence rate. The rapid development was recorded in 70-75% RH at 30°C. Higher number of adults was found with an increase in temperature and RH. Adult longevity was significantly higher in 70-75% RH at 20°C. Based on the present study's findings, temperature and RH had an individual apparent effect on the developmental processes of <i>Spodoptera</i> species instead of an interactive effect. Therefore, there is need for an in-depth study of the influence of several climatic factors, including CO<sub>2</sub>, on the developmental modality and demographic changes of <i>Spodoptera</i> species to assess the impacts of climatic components and the sustainable development of management strategies.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":"114 5","pages":"606-612"},"PeriodicalIF":1.6,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142646839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
NADPH-cytochrome P450 reductase involved in the lambda-cyhalothrin susceptibility on the green mirid bug Apolygus lucorum. NADPH-Cytochrome P450 还原酶与绿色镜蝽(Apolygus lucorum)对溴氰菊酯的敏感性有关。
IF 1.6 3区 农林科学
Bulletin of Entomological Research Pub Date : 2024-10-01 Epub Date: 2024-10-02 DOI: 10.1017/S0007485324000488
Congai Zhen, Rui Wu, Yao Tan, Ansheng Zhang, Lei Zhang
{"title":"NADPH-cytochrome P450 reductase involved in the lambda-cyhalothrin susceptibility on the green mirid bug <i>Apolygus lucorum</i>.","authors":"Congai Zhen, Rui Wu, Yao Tan, Ansheng Zhang, Lei Zhang","doi":"10.1017/S0007485324000488","DOIUrl":"10.1017/S0007485324000488","url":null,"abstract":"<p><p>NADPH-cytochrome P450 reductase (CPR) is crucial for the detoxification process catalysed by cytochrome P450, which targets various exogenous xenobiotics, as well as pesticides. In our research, we successfully obtained the complete cDNA sequence of <i>Apolygus lucorum</i>'s CPR (<i>AlCPR</i>) using reverse transcription PCR along with rapid amplification of cDNA ends technology. Bioinformatics analysis exhibited that the inferred amino acid sequence of AlCPR is characteristic of standard CPRs, featuring an N-terminal membrane anchor and three conserved FMN, FAD and NADP binding sites. Phylogenetic result revealed that AlCPR was positioned within the Hemiptera cluster, showing a close evolutionary relationship with the CPR of <i>Cimex lectularius</i>. The real-time quantitative PCR results demonstrated widespread expression of <i>AlCPR</i> across various life stages and tissues of <i>A. lucorum</i>, with the most prominent expression in adults and the abdominal region. Injecting double-stranded RNA of <i>AlCPR</i> only significantly increased the lambda-cyhalothrin susceptibility in lambda-cyhalothrin-resistant strain rather than the susceptible strain. These findings suggest a potential link between AlCPR and the P450-dependent defence mechanism against lambda-cyhalothrin in <i>A. lucorum.</i></p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"699-706"},"PeriodicalIF":1.6,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142361123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unveiling symbiotic bacterial communities in insects feeding on the latex-rich plant Ficus microcarpa. 揭示昆虫捕食富含乳胶的小榕树时体内的共生细菌群落。
IF 1.6 3区 农林科学
Bulletin of Entomological Research Pub Date : 2024-10-01 Epub Date: 2024-10-18 DOI: 10.1017/S0007485324000439
Waleed Afzal Naveed, Qian Liu, Congcong Lu, Xiaolei Huang
{"title":"Unveiling symbiotic bacterial communities in insects feeding on the latex-rich plant <i>Ficus microcarpa</i>.","authors":"Waleed Afzal Naveed, Qian Liu, Congcong Lu, Xiaolei Huang","doi":"10.1017/S0007485324000439","DOIUrl":"10.1017/S0007485324000439","url":null,"abstract":"<p><p>The diversity and health of insects that feed on plants are closely related to their mutualistic symbionts and host plants. These symbiotic partners significantly influence various metabolic activities in these insects. However, the symbiotic bacterial community of toxic plant feeders still needs further characterisation. This study aims to unravel bacterial communities associated with the different species of insect representing three insect orders: Thysanoptera, Hemiptera, and Lepidoptera, along with their predicted functional role, which exclusively feeds on latex-rich plant species <i>Ficus microcarpa</i>. By using 16S rRNA gene high-throughput sequencing, the analysis was able to define the major alignment of the bacterial population, primarily comprising <i>Proteobacteria</i>, <i>Firmicutes</i>, <i>Bacteroidota</i>, <i>Actinobacteriota</i>, and <i>Acidobacteriota</i>. Significant differences in symbiotic organisms between three insect groups were discovered by the study: hemipterans had <i>Burkholderia</i> and <i>Buchnera</i>, and lepidopterans had <i>Acinetobacter</i>. At the same time, <i>Pseudomonas</i> was detected in high abundance in both lepidopteran and thysanopteran insects. Furthermore, these symbionts exhibit consistent core functions, potentially explaining how different insects can consume the same host plant. The identified core functions of symbionts open avenues for innovative approaches in utilising these relationships to develop environment-friendly solutions for pest control, with broader implications for agriculture and environmental conservation.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"652-662"},"PeriodicalIF":1.6,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142458593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evidence of circulating recombinants between deformed wing virus and Varroa destructor virus-1 in honey bee colonies in Türkiye. 图尔基耶蜜蜂群中畸形翅病毒和瓦罗拉破坏者病毒-1 之间循环重组体的证据。
IF 16.4 3区 农林科学
Bulletin of Entomological Research Pub Date : 2024-10-01 Epub Date: 2024-10-28 DOI: 10.1017/S000748532400052X
Murat Şevik, Aykut Zerek, İpek Erdem, Mehmet Yaman
{"title":"Evidence of circulating recombinants between deformed wing virus and <i>Varroa destructor</i> virus-1 in honey bee colonies in Türkiye.","authors":"Murat Şevik, Aykut Zerek, İpek Erdem, Mehmet Yaman","doi":"10.1017/S000748532400052X","DOIUrl":"10.1017/S000748532400052X","url":null,"abstract":"<p><p>Deformed wing virus (DWV), which is an important honey bee virus transmitted by <i>Varroa destructor (V. destructor)</i>, causes colony losses in honey bee colonies. This study aimed to investigate the prevalence and genetic diversity of DWV in honey bees in Türkiye and to determine the role of <i>V. destructor</i> in the transmission of the genetic variants of DWV. Honey bee samples were collected from 62 apiaries, by simple random sampling, during March 2022 and April 2023. The presence of <i>V. destructor</i> in collected bee samples was examined using a stereo microscope. Real-time RT-PCR was used for the detection of DWV-A and DWV-B (<i>Varroa destructor</i> virus-1 (VDV-1)) viruses. Genetic characterisation of the positive samples was conducted by sequencing polyprotein genomic region. Considering the <i>V. destructor</i> infestation rate of 3% as relevant, out of the 62 apiaries examined, 17 (27.4%) were positive. However, DWV-A and VDV-1 specific RNA was not detected in <i>V. destructor</i> samples. VDV-1 specific RNA was detected in 6.5% (4/62) of the apiaries, whereas DWV-A was not detected in the sampled apiaries. Phylogenetic analysis showed that isolates detected in this study were located in a separate cluster from previously characterised DWV-A and VDV-1 isolates. According to RDP4 and GARD analyses, DWV-VDV-1 recombination breakpoints were detected in field isolates. To the best our knowledge, this is the first report of the presence of VDV-1-DWV recombinants in Türkiye. Further studies are needed to determine the impact of VDV-1-DWV recombinants and their virological and antigenic properties.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"631-641"},"PeriodicalIF":16.4,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142495573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The effects of lead (Pb) and pest damage on soil enzyme activities, pakchoi and Spodoptera litura performance 铅(Pb)和害虫危害对土壤酶活性、白僵菌和斑翅蝶类表现的影响
IF 1.9 3区 农林科学
Bulletin of Entomological Research Pub Date : 2024-09-19 DOI: 10.1017/s0007485324000208
Huiyang Liu, Yimeng Shi, Yuxuan Zou, Zaiya Song, Huai Tian, Xianjun Yang, Xiaohong Li
{"title":"The effects of lead (Pb) and pest damage on soil enzyme activities, pakchoi and Spodoptera litura performance","authors":"Huiyang Liu, Yimeng Shi, Yuxuan Zou, Zaiya Song, Huai Tian, Xianjun Yang, Xiaohong Li","doi":"10.1017/s0007485324000208","DOIUrl":"https://doi.org/10.1017/s0007485324000208","url":null,"abstract":"<p>Plant–soil interactions have bottom–up and top–down effects within a plant community. Heavy metal pollution can change plant–soil interactions, directly influence bottom–up effects and indirectly affect herbivores within the community. In turn, herbivores can affect plant–soil interactions through top–down effects. However, the combined effects of heavy metals and herbivores on soil enzymes, plants and herbivores have rarely been reported. Therefore, the effects of lead (Pb), <span>Spodoptera litura</span> and their combined effects on soil enzyme activities, pakchoi nutrition, defence compounds and <span>S. litura</span> fitness were examined here. Results showed that Pb, <span>S. litura</span> and their combined effects significantly affected soil enzymes, pakchoi and <span>S. litura</span>. Specifically, exposure to double stress (Pb and <span>S. litura</span>) decreased soil urease, phosphatase and sucrase activities compared with controls. Furthermore, the soluble protein and sugar contents of pakchoi decreased, and the trypsin inhibitor content and antioxidant enzyme activity increased. Finally, the <span>S. litura</span> development period was extended, and survival, emergence rates and body weight decreased after exposure to double stress. The combined stress of Pb and <span>S. litura</span> significantly decreased soil enzyme activities. Heavy metal accumulation in plants may create a superposition or synergistic effect with heavy metal-mediated plant chemical defence, further suppressing herbivore development. Pb, <span>S. litura</span> and their combined effects inhibited soil enzyme activities, improved pakchoi resistance and reduced <span>S. litura</span> development. The results reveal details of soil–plant–herbivore interactions and provide a reference for crop pest control management in the presence of heavy metal pollution.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":"10 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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