Bulletin of Entomological Research最新文献_第2页

Identification and expression analysis of cathepsin B genes in Myzus persicae (Hemiptera: Aphididae) and their response to environmental stresses. 桃蚜（半翅目：蚜虫科）组织蛋白酶B基因的鉴定、表达及对环境胁迫的响应。

IF 1.6 3区农林科学

Bulletin of Entomological Research Pub Date : 2025-06-01 DOI: 10.1017/S0007485325000136

Jin-Shan Zhang, Jian-Yu Meng, Lei Yang, Chang-Yu Zhang

{"title":"Identification and expression analysis of cathepsin B genes in Myzus persicae (Hemiptera: Aphididae) and their response to environmental stresses.","authors":"Jin-Shan Zhang, Jian-Yu Meng, Lei Yang, Chang-Yu Zhang","doi":"10.1017/S0007485325000136","DOIUrl":"10.1017/S0007485325000136","url":null,"abstract":"Cathepsin B (CTSB) is a cysteine protease that is widely found in eukaryotes and plays a role in insect growth, development, digestion, metamorphosis, and immunity. In the present study, we examined the role of CTSB in response to environmental stresses in Myzus persicae Sulzer (Hemiptera: Aphididae). Six MpCTSB genes, namely MpCTSB-N, MpCTSB-16D1, MpCTSB-3098, MpCTSB-10270, MpCTSB-mp2, and MpCTSB-16, were identified and cloned from M. persicae. The putative proteins encoded by these genes contained three conserved active site residues, i.e. Cys, His, and Asn. A phylogenetic tree analysis revealed that the six MpCTSB proteins of M. persicae were highly homologous to other Hemipteran insects. Real-time polymerase chain reaction revealed that the MpCTSB genes were expressed at different stages of M. persicae and highly expressed in winged adults or first-instar nymphs. The expression of nearly all MpCTSB genes was significantly upregulated under different environmental stresses (38°C, 4°C, and ultraviolet-B). This study shows that MpCTSB plays an important role in the growth and development of M. persicae and its resistance to environmental stress.","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"329-339"},"PeriodicalIF":1.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143751234","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

Development and survival of Plutella Xylostella in central Argentina: Estimating key parameters for local populations. 阿根廷中部小菜蛾的发育和生存：估算当地种群的关键参数。

IF 1.6 3区农林科学

Bulletin of Entomological Research Pub Date : 2025-06-01 DOI: 10.1017/S0007485325000161

Paula San Pedro, Romina Fachinetti, Efrain Ferreyra, Mariano Pablo Grilli

{"title":"Development and survival of Plutella Xylostella in central Argentina: Estimating key parameters for local populations.","authors":"Paula San Pedro, Romina Fachinetti, Efrain Ferreyra, Mariano Pablo Grilli","doi":"10.1017/S0007485325000161","DOIUrl":"10.1017/S0007485325000161","url":null,"abstract":"Diamondback moth, Plutella xylostella (Lepidoptera: Plutellidae), a globally distributed insect, is a major pest of crucifer crops due to its adaptability to diverse climates. In Argentina, its distribution spans three regions: a core area in the northeast and central-east where it persists year-round, a southwestern region with seasonal migrations, and an intermediate zone with variable year-round persistence. Across these areas, it is the primary pest of Brassica crops. In the central-east, the availability of year-round Brassicaceae crops and wild species indicates that seasonality is not linked to food scarcity. While studies have examined this relationship elsewhere, thermal thresholds vary among populations, and limited data on South American populations highlight the need for localised research. This study evaluated thermal thresholds for P. xylostella populations in central Argentina, focusing on temperature's effects on fecundity, fertility, development, and survival. We found that temperatures outside the optimal range (15-23°C) significantly reduced survival, with no individuals surviving at 5 or 30°C. Linear and non-linear models accurately described the relationship between temperature and pest development. Using cumulative degree-days, we mapped potential P. xylostella generations across central Argentina. This research provides the first comprehensive analysis of P. xylostella thermal biology in temperate Argentina, emphasising temperature's critical role in its development. The findings offer valuable insights for climate-specific pest management strategies and enhance understanding of insect population dynamics in agricultural ecosystems, contributing to more sustainable control practices.","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"354-365"},"PeriodicalIF":1.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143762951","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

Involvement of sensory neuron membrane protein gene (SNMP) in host plant searching in the bird cherry-oat aphid. 感觉神经元膜蛋白基因（SNMP）在鸟樱子蚜寻找寄主植物过程中的参与。

IF 1.6 3区农林科学

Bulletin of Entomological Research Pub Date : 2025-06-01 DOI: 10.1017/S0007485325000173

Linhai Xia, Mengjie Gao, Zhimin Xu, Xiaoxiao Yuan, Wenhua Hou, Maohua Chen, Xiong Peng

{"title":"Involvement of sensory neuron membrane protein gene (SNMP) in host plant searching in the bird cherry-oat aphid.","authors":"Linhai Xia, Mengjie Gao, Zhimin Xu, Xiaoxiao Yuan, Wenhua Hou, Maohua Chen, Xiong Peng","doi":"10.1017/S0007485325000173","DOIUrl":"10.1017/S0007485325000173","url":null,"abstract":"Sensory neuron membrane protein (SNMP) gene play a crucial role in insect chemosensory systems. However, the role of SNMP in the host searching behaviour of Rhopalosiphum padi (Hemiptera: Aphididae), a highly destructive pest of cereal crops, has not been clearly understood. Our previous research has shown that three wheat volatile organic compounds (VOCs) - (E)-2-hexenol, linalool, and octanal can attract R. padi, but the involvement of SNMP in the aphid's olfactory response to these wheat VOCs has not to be elucidated. In this study, only one SNMP gene was cloned and characterised from R. padi. The results revealed that the SNMP belongs to the SNMP1 subfamily and was named RpadSNMP1. RpadSNMP11 was predominantly expressed in the antennae of the aphid, with significantly higher expression levels observed in winged forms, indicating that it is involved in olfactory responses of R. padi. RpadSNMP1 expression was significantly up-regulated following starvation, and the expression of this gene showed a decreasing trend after 24 h of aphid feeding. Functional analysis through RpadSNMP1 knockdown demonstrated a significant decrease in R. padi's ability to search for host plants. The residence time of R. padi injected with dsRpadSNMP1 significantly shortened in response to (E)-2-hexenol, linalool and octanal according to the four-arm olfactometer, indicating the crucial role of RpadSNMP1 in mediating the aphid's response to these wheat VOCs. Molecular docking suggested potential binding interactions between RpadSNMP1 and three wheat VOCs. Overall, these findings provided evidence for the involvement of RpadSNMP1 in host plant searching and lay a foundation for developing new methods to control this destructive pest.","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"366-374"},"PeriodicalIF":1.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143728702","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

Molecular characterisation and developmental expression analysis of the 5-HT7 receptor in Chrysopa formosa. 台湾金沙5-HT7受体的分子特征及发育表达分析。

IF 1.6 3区农林科学

Bulletin of Entomological Research Pub Date : 2025-06-01 DOI: 10.1017/S0007485325000148

Fei Li, Longrui Wang, Yujia Li, Xuyang Tian, Jiayue Wang, Zhongjian Shen, Junjie Zhang, Lisheng Zhang, Yuyan Li

{"title":"Molecular characterisation and developmental expression analysis of the 5-HT7 receptor in Chrysopa formosa.","authors":"Fei Li, Longrui Wang, Yujia Li, Xuyang Tian, Jiayue Wang, Zhongjian Shen, Junjie Zhang, Lisheng Zhang, Yuyan Li","doi":"10.1017/S0007485325000148","DOIUrl":"10.1017/S0007485325000148","url":null,"abstract":"Serotonin (5-hydroxytryptamine, 5-HT) is a key monoamine neurotransmitter in insects, which regulates neural functions and influences various developmental and physiological processes by binding to its receptors. In this study, we investigate the molecular characteristics, phylogenetic relationships, and expression patterns of the 5-HT7 receptor (Cf5-HT7) in Chrysopa formosa, with a focus on its potential involvement in developmental and diapause regulation. The Cf5-HT7 gene was identified and cloned from the C. formosa transcriptome, revealing an open reading frame of 1788 bp encoding a 596 amino acid protein. Sequence analysis confirmed that Cf5-HT7 is a typical class A G protein-coupled receptor, characterised by seven transmembrane domains and several post-translational modifications, including palmitoylation and N-glycosylation sites. Phylogenetic analysis revealed that Cf5-HT7 is most closely related to the 5-HT7 receptor from Chrysoperla carnea, with high conservation of key motifs involved in ligand binding and receptor activation. Expression analysis across different developmental stages of C. formosa showed that Cf5-HT7 is highly expressed in the first instar larvae, with significant upregulation observed during the prepupal stage. Under diapause-inducing conditions, Cf5-HT7 expression is modulated in a stage-specific manner, showing a marked decrease at the onset of diapause, followed by a significant increase during the mid-to-late diapause maintenance phase. These findings suggest that it plays a pivotal role in regulating development and diapause processes in C. formosa, offering new insights into the molecular mechanisms governing insect life cycle transitions. This study lays the groundwork for future research into the functional roles of 5-HT7 receptors in insect physiology and their potential applications in manipulating diapause.","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"317-328"},"PeriodicalIF":1.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143647289","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

Impact of temperature on development and reproduction of the olive black scale Saissetia oleae (Olivier) (Hemiptera: Coccidae). 温度对橄榄黑鳞片绿瓢虫（半翅目：瓢虫科）发育和繁殖的影响。

IF 1.6 3区农林科学

Bulletin of Entomological Research Pub Date : 2025-06-01 DOI: 10.1017/S0007485325000112

Mohamed El Aalaoui, Fouad Mokrini, Mohamed Sbaghi

{"title":"Impact of temperature on development and reproduction of the olive black scale Saissetia oleae (Olivier) (Hemiptera: Coccidae).","authors":"Mohamed El Aalaoui, Fouad Mokrini, Mohamed Sbaghi","doi":"10.1017/S0007485325000112","DOIUrl":"10.1017/S0007485325000112","url":null,"abstract":"The olive black scale, Saissetia oleae (Olivier), is a significant pest of olive crops worldwide. The developmental, reproductive, and population growth parameters of S. oleae were evaluated under five constant temperature conditions (18°C to 33°C). Developmental durations significantly decreased with increasing temperatures. Female lifespan decreased from 161.6 days at 18°C to 104.3 days at 33°C, while male lifespan decreased from 96.8 days at 18°C to 49.4 days at 33°C. The highest sex ratio (proportion of females) of 0.35 was observed at 30°C, with pre-adult survival rates of 63%, while survival rates dropped to 28% at 18°C. Parthenogenesis was not observed in females. The total pre-oviposition and post-oviposition periods decreased with increasing temperature, with the longest oviposition period at 33°C (49.6 days). Maximum fecundity was recorded at 33°C (379.0 eggs/female), followed by 30°C (298.6 eggs/female), and decreased sharply at 18°C (90.1 eggs/female). The intrinsic rate of increase (r) was highest at 30 and 33°C (0.038 d⁻1), while the net reproductive rate (R0) peaked at 30°C (104.5 offspring/female). The predicted fecundity of the next generation showed significant potential growth at 27 and 30°C, with the population increasing 65.3 times at 30°C and 39.4 times at 27°C. The developmental threshold for S. oleae was highest for first-instar nymphs (7.58°C), while second-instar nymphs had lower thresholds (1.09-1.65°C), with total pre-adult development requiring 1250 degree-days for both males and females. These findings underscore the significant impact of temperature on the development and reproduction of S. oleae, with implications for pest management in olive orchards.","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"296-307"},"PeriodicalIF":1.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143536571","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

Genetic diversity and association with bacterial endosymbionts influence phenotype in two important cereal aphid species. 遗传多样性及其与细菌内共生体的关联影响两种重要谷物蚜虫的表型。

IF 1.6 3区农林科学

Bulletin of Entomological Research Pub Date : 2025-06-01 DOI: 10.1017/S0007485325000124

Daniel J Leybourne

{"title":"Genetic diversity and association with bacterial endosymbionts influence phenotype in two important cereal aphid species.","authors":"Daniel J Leybourne","doi":"10.1017/S0007485325000124","DOIUrl":"10.1017/S0007485325000124","url":null,"abstract":"Aphids are important pests of cereal crops and cause economically significant damage through direct feeding and the transmission of plant viruses. In Europe, the aphid species of greatest concern are the grain aphid (Sitobion avenae Fabricius) and the bird cherry-oat aphid, (Rhopalosiphum padi Linnaeus). Often, cereal crops are dominated by a small number of prolific clonal populations and these populations can differ in phenotypic traits of agricultural importance. There are two heritable factors that influence aphid phenotype: aphid genetic diversity and the presence of endosymbionts.Here, multiple cereal aphid populations are used to determine how heritable factors influence aphid phenotype. Several agriculturally important phenotypic traits are examined, and both endosymbiont- and genotype-derived phenotypes are identified. For S. avenae, aphid genotype influences all phenotypic traits assessed, and association with the facultative endosymbiont Regiella insecticola influences alate morph production with co-infection of R. insecticola and Fukatsuia symbiotica increasing reproductive output. For R. padi, adult aphid morph (apterous or alate) is the key driver behind reproductive output, with a genotype × morph effect also found to influence development time.Overall, these results provide insight into the biological drivers behind phenotypic diversity in agriculturally important aphid species. Being able to associate heritable factors with key phenotypes can generate biological insights into the processes underpinning the dominance of specific aphid clones and can be used to develop pest and disease management strategies based around the phenotypic risk of the aphid populations present.","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"308-316"},"PeriodicalIF":1.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143555955","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

Feeding potential and functional response of Oenopia sauzeti (Mulsant) against potato aphid, Macrosiphum euphorbiae Thomas (Hemiptera: Aphididae). 紫盲蝽（Oenopia sauzeti）对马铃薯蚜虫（Macrosiphum euphbiae Thomas）的取食潜力及功能响应

IF 1.6 3区农林科学

Bulletin of Entomological Research Pub Date : 2025-05-16 DOI: 10.1017/S0007485325000288

Priyanka Sharma, Prem Lal Sharma, Subhash Chander Verma, Shikha Thakur, Shubham Sharma, Prajjval Sharma

{"title":"Feeding potential and functional response of Oenopia sauzeti (Mulsant) against potato aphid, Macrosiphum euphorbiae Thomas (Hemiptera: Aphididae).","authors":"Priyanka Sharma, Prem Lal Sharma, Subhash Chander Verma, Shikha Thakur, Shubham Sharma, Prajjval Sharma","doi":"10.1017/S0007485325000288","DOIUrl":"https://doi.org/10.1017/S0007485325000288","url":null,"abstract":"Oenopia sauzeti (Mulsant) (Coccinellidae: Coleoptera) is a highly efficient predator of sap-sucking insect pests due to its high feeding capacity and broad prey range. The present investigation was carried out to find out the feeding potential and functional response of O. sauzeti fed on different densities of Macrosiphum euphorbiae (Thomas) (Aphididae: Hemiptera) nymphs in the in vitro condition with the overarching objective of appraising the ladybird beetle's potential as a distinguished biological control agent. The newly emerged coccinellid grubs of a particular stage were reared individually on Petri plates with a known number of M. euphorbiae nymphs of a particular stage. The single individual of O. sauzeti consumed 1104.53, 936.53, 634.07, and 473.20 aphids in one generation when reared on the first, second, third, and fourth instars of M. euphorbiae, respectively. The female adult of predator recorded as a more voracious feeder compared to the male adult. O. sauzeti exhibits a type II functional response against potato aphid, and a significantly negative linear coefficient was obtained after logistic regression analysis for the proportion of prey consumed (Na/N) as a function of initial prey density (N). The functional response parameters, i.e. attack rate and handling time, were estimated by applying Roger's random predator equation. The attack rate increased, and handling time decreased with the advancement of the development stage of the predator. The voracious nature of both adults and grubs of the ladybird beetle makes this effective biocontrol agent to be used in the Integrated Pest Management Programme against the potato aphid.","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"1-13"},"PeriodicalIF":1.6,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144076126","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

Effect of rain and temperature on the nocturnal flight phenology of Afrotropical ants (Hymenoptera: Formicidae). 降雨和温度对热带蚁夜间飞行物候的影响（膜翅目：蚁科）。

IF 1.6 3区农林科学

Bulletin of Entomological Research Pub Date : 2025-05-09 DOI: 10.1017/S0007485325000318

Michael Bigger, Colin Andrew Michael Campbell

{"title":"Effect of rain and temperature on the nocturnal flight phenology of Afrotropical ants (Hymenoptera: Formicidae).","authors":"Michael Bigger, Colin Andrew Michael Campbell","doi":"10.1017/S0007485325000318","DOIUrl":"https://doi.org/10.1017/S0007485325000318","url":null,"abstract":"The effects of rainfall and temperature on the seasonal phenology of ant nuptial flights in a forest locality in Ghana was studied for 42 months using a light-trap. A total of 204393 ants was caught. Of the 135 species/morphospecies collected, 40 could not be identified beyond genus, and males of a further 14 beyond subfamily. The commonest 65 species/morphospecies flew a mean of 10.1 ± 0.4 months per year. With the exception of males of Dorylus atriceps, Platythyrea conradti, Plat. modesta, Crematogaster nr striatula plus gynes of Plagiolepis brunni and Cr. [F257], whose peak flights occurred in the main dry season, flight activity coincided with the onset of the rainy seasons. Both sexes of Pheidole megacephala, P. speculifera, Tetramorium aculeatum, and Paraparatrechina albipes plus gynes of Cr. striatula and males of Anochetus africanus, Hypoponera dulcis, Cr. kneri, and T. guineensis flew more frequently on rainy than dry dates. Nineteen species were caught more frequently on dry than on wet dates including most Camponotus, Tapinoma, and Technomyrmex spp. Fifteen species/morphospecies responded positively to increasing monthly rainfall, six to increasing monthly temperatures, and five to the interaction between these factors, with males of A. pellucidus, H. dulcis, and Cr. striatula caught more frequently in wetter, warmer months, and those of Camponotus olivieri and Technomyrmex andrei in drier, warmer ones.","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"1-16"},"PeriodicalIF":1.6,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143980304","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 avoidance of conspecific cues during egg-laying decision-making in the Asian long-horned beetle Anoplophora glabripennis. 亚洲光肩天牛（Anoplophora glabripennis）在产卵决策过程中对同种线索的回避。

IF 1.6 3区农林科学

Bulletin of Entomological Research Pub Date : 2025-05-02 DOI: 10.1017/S000748532500032X

Takao Konishi, Kazushige Uemori, Shigeaki Tamura, Hisatomo Taki, Etsuko Shoda-Kagaya

{"title":"The avoidance of conspecific cues during egg-laying decision-making in the Asian long-horned beetle Anoplophora glabripennis.","authors":"Takao Konishi, Kazushige Uemori, Shigeaki Tamura, Hisatomo Taki, Etsuko Shoda-Kagaya","doi":"10.1017/S000748532500032X","DOIUrl":"https://doi.org/10.1017/S000748532500032X","url":null,"abstract":"For insects whose larvae are incapable of moving between food resources, the selection of oviposition sites by females is critical to the survival and development of their offspring. In such insects, it is known that females utilise and benefit from conspecific cues for oviposition choice. Studying how information from the behaviour of conspecifics affects egg-laying decision-making is crucial for understanding the biology of insects, which can lead to novel strategies for pest management. We focused on the reproductive behaviour of the Asian long-horned beetle Anoplophora glabripennis, which has become an invasive pest species throughout the world. Here, we show that A. glabripennis avoids sites already containing conspecific cues during egg-laying decision-making. The field survey measuring the distance between neighbouring oviposition scars (in this species, females make scars through the bark of host branches for laying eggs) suggested that the selection of oviposition sites by females is not random. In laboratory oviposition-choice bioassays, females made less oviposition scars on branches containing scars made by other females than those without scars. In addition, female oviposition was also deterred by the presence of their own oviposition scars. Our results indicate that avoiding sites containing conspecific (and their own) traces realises fitness benefit such as reducing resource competition among larvae. This study provides insights into the reproductive behaviour of this invasive longhorn beetle, which is useful for developing environmentally friendly control methods such as oviposition deterrents.","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"1-6"},"PeriodicalIF":1.6,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143989742","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

Biology of Phycodes radiata (Lepidoptera: Brachodidae) and its immune challenge to entomopathogenic fungi. 辐射藻的生物学及其对昆虫病原真菌的免疫挑战。

IF 1.6 3区农林科学

Bulletin of Entomological Research Pub Date : 2025-04-24 DOI: 10.1017/S0007485325000197

Fatemeh Abdos, Maryam Ajamhassani, Seyedeh Masoomeh Zamani

{"title":"Biology of Phycodes radiata (Lepidoptera: Brachodidae) and its immune challenge to entomopathogenic fungi.","authors":"Fatemeh Abdos, Maryam Ajamhassani, Seyedeh Masoomeh Zamani","doi":"10.1017/S0007485325000197","DOIUrl":"https://doi.org/10.1017/S0007485325000197","url":null,"abstract":"Phycodes radiata is a significant pest of fig trees, causing extensive damage to fig orchards in the Semnan region of Iran in recent years. egg masses of P. radiata were collected from four Ficus carica cultivars, Zard Semnan, Ghermez Semnan, Zard Garmsar, and Ficus sp., and were subsequently reared under laboratory conditions. The study investigated the biological parameters of P. radiata when fed on four different fig cultivars. The feeding index parameters were significantly higher in the Zard Semnan cultivar than in the others. Hemocyte types observed in the larval hemolymph included prohemocytes, plasmatocytes, granulocytes, and oenocytoids, as identified via light microscopy. The pathogenicity of five isolates of entomopathogenic fungi: three isolates of Beauveria bassiana (B1, B2, and B3), one isolate of Metarhizium anisopliae, and one isolate of Lecanicillium muscarium were assessed against P. radiata larvae. The larvae were directly immersed in the fungal suspension for 6 seconds. Control larvae were treated similarly with Tween 80 (0.01%) and distilled water. Larval mortality was highest with the B2, B1, and B3 isolates, respectively. To evaluate hemocyte density in response to pathogenic fungi, fungal spores were injected into insect hemolymph, and hemocyte type changes were recorded at 1, 3, 6, 12, 24, 48, and 72 hours post-injection. The most pronounced effects were observed with the B1 and B2 isolates at 3 and 6 hours post-injection. Overall, the findings indicate that entomopathogenic fungi can effectively disrupt the growth and defense mechanisms of P. radiata, leading to impaired development and increased larval mortality.","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"1-17"},"PeriodicalIF":1.6,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143980596","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