Bulletin of Entomological Research最新文献_第8页

Effects of polyamide microplastics with different particle sizes on the development of silkworm Bombyx mori (Lepidoptera: Bombycidae) and its progeny: A study based on the age-stage, two-sex life table. 不同粒径聚酰胺微塑料对家蚕（鳞翅目：家蚕科）及其后代发育的影响——基于年龄阶段、两性生命表的研究

IF 1.6 3区农林科学

Bulletin of Entomological Research Pub Date : 2025-06-01 DOI: 10.1017/S0007485325000203

Zengqing Huang, FeiFei Wang, Jiacheng Zheng, Zhonghe Sun, Xiaoyong Liu, Shangshang Ma, Keping Chen, Xiaoli Ju, Qiang Wang

{"title":"Effects of polyamide microplastics with different particle sizes on the development of silkworm Bombyx mori (Lepidoptera: Bombycidae) and its progeny: A study based on the age-stage, two-sex life table.","authors":"Zengqing Huang, FeiFei Wang, Jiacheng Zheng, Zhonghe Sun, Xiaoyong Liu, Shangshang Ma, Keping Chen, Xiaoli Ju, Qiang Wang","doi":"10.1017/S0007485325000203","DOIUrl":"10.1017/S0007485325000203","url":null,"abstract":"Influenced by human activities, microplastics (MPs) are widely distributed in terrestrial ecosystems. However, their ecotoxicity remains unclear. Therefore, we assessed the ecotoxicity of polyamide microplastics (PA-MPs) by investigating their toxic effects on the model insect, the silkworms Bombyx mori (Lepidoptera: Bombycidae). In this study, fifth-instar silkworm larvae were fed mulberry leaves treated with PA-MPs for 120 hours, but no changes in mortality rates were observed. However, the body weight, pupal weight, cocoon weight, egg laying amount, and cocoon shell weight in F0 generation silkworms were significantly reduced. This indicates that PA-MPs have sublethal effects on silkworms. To further investigate the effects of PA-MPs on the offspring of silkworms, we applied the age-stage, two-sex life table analysis. We found that in the PA-MPs treatment group, the duration of the larval and pupal stages of F1 generation silkworms was significantly prolonged, while the lifespan of the adults and total longevity were shortened. Meanwhile, the life history parameters (sxj, exj, lx, fxj, lxmx, and vxj values) and population parameters (R0, λ, r, and T) of F1 generation silkworms in the PA-MPs treatment group were also lower than control. This indicates that PA-MPs have transgenerational effects, affecting the growth, development, and reproduction of F1 generation silkworms. Our research findings demonstrate the sublethal and transgenerational effects of PA-MPs on silkworms, providing evidence for their ecotoxicity.","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"375-385"},"PeriodicalIF":1.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143728701","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

Effectiveness of the predatory mite Neoseiulus cucumeris on two-spotted spider mite and western flower thrips: A quantitative assessment - Erratum. 黄瓜新小绥螨对双斑蜘蛛螨和蓟马捕食效果的定量评价。

IF 1.6 3区农林科学

Bulletin of Entomological Research Pub Date : 2025-06-01 DOI: 10.1017/S0007485325000239

Sajjad Dalir, Hamidreza Hajiqanbar, Yaghoub Fathipour, Mostafa Khanamani

引用次数: 0

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

An entomopathogenic strain of Beauveria bassiana (hypocreales: Cordycipitaceae) against Eotetranychus kankitus (acarina: Tetranychidae) and its compatibility with Neoseiulus barkeri (acarina: Phytoseiidae). 球孢白僵菌对肯基叶螨（叶螨科）的昆虫致病菌株及其与巴氏新绥螨的相容性研究。

IF 1.6 3区农林科学

Bulletin of Entomological Research Pub Date : 2025-02-26 DOI: 10.1017/S0007485325000057

Mingxiu Liu, Dong Xiang, Xiaotian Feng, Xuanliang Li, Mian Wang, Zhen Wang, Hanqiu Chen, Huai Liu, Yaying Li

{"title":"An entomopathogenic strain of Beauveria bassiana (hypocreales: Cordycipitaceae) against Eotetranychus kankitus (acarina: Tetranychidae) and its compatibility with Neoseiulus barkeri (acarina: Phytoseiidae).","authors":"Mingxiu Liu, Dong Xiang, Xiaotian Feng, Xuanliang Li, Mian Wang, Zhen Wang, Hanqiu Chen, Huai Liu, Yaying Li","doi":"10.1017/S0007485325000057","DOIUrl":"https://doi.org/10.1017/S0007485325000057","url":null,"abstract":"Eotetranychus kankitus is an important pest on several agricultural crops, and its resistance to pesticides has promoted the exploration of biological control strategies. Beauveria bassiana and Neoseiulus barkeri have been identified as potential agents for suppressing spider mites. This study aimed to investigate the pathogenicity of B. bassiana on E. kankitus and its compatibility with N. barkeri. Results showed that among the five tested strains of B. bassiana, Bb025 exhibited the highest level of pathogenicity on E. kankitus. Higher application rates (1 × 108 conidia/mL) of Bb025 led to a higher mortality rate of E. kankitus (90.402%), but also resulted in a 15.036% mortality of N. barkeri. Furthermore, preference response tests indicated that both E. kankitus and N. barkeri actively avoided plants sprayed with Bb025 compared to the control group that was sprayed with Tween-80. In a no-choice test, we observed that N. barkeri actively attacked Bb025-treated E. kankitus with no adverse effect on its predatory capacities. Furthermore, N. barkeri laid more eggs when fed on Bb025-treated E. kankitus compared to Tween-80-treated E. kankitus, but the subsequent generation of surviving individuals fed on Bb025-treated E. kankitus was reduced. These findings demonstrate that the Bb025 strain of B. bassiana is highly virulent against E. kankitus while causing less harm to N. barkeri. Consequently, a promising strategy for controlling E. kankitus could involve the sequential utilisation of Bb025 and N. barkeri at appropriate intervals.","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"1-8"},"PeriodicalIF":1.6,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143498285","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

Host age preference and biology of Coccygidium luteum (Hymenoptera: Braconidae), a larval parasitoid of the fall armyworm. 秋粘虫幼虫寄主年龄偏好及生物学研究。

IF 1.6 3区农林科学

Bulletin of Entomological Research Pub Date : 2025-02-19 DOI: 10.1017/S0007485325000070

Patrick Beseh, John Abraham, Lakpo Koku Agboyi, Benjamin Mensah

{"title":"Host age preference and biology of Coccygidium luteum (Hymenoptera: Braconidae), a larval parasitoid of the fall armyworm.","authors":"Patrick Beseh, John Abraham, Lakpo Koku Agboyi, Benjamin Mensah","doi":"10.1017/S0007485325000070","DOIUrl":"https://doi.org/10.1017/S0007485325000070","url":null,"abstract":"Coccygidium luteum (Hymenoptera: Braconidae), a solitary larval parasitoid, is associated with the fall armyworm (FAW), in Africa. However, there is very limited information on reproductive biology, and other biological parameters that influence its life strategies. We conducted laboratory experiments to gain new insights into the biology of C. luteum reared on FAW as the host. Host age preference, reproductive biology, lifetime fecundity, life cycle, and adult longevity were studied under laboratory conditions of 28 ± 1°C and 70 ± 3% relative humidity. This study revealed that C. luteum prefer early (1st-3rd) instars of FAW for oviposition. The maximum parasitism rate was 80% at second instar larvae. A mean pre-oviposition period of 0.38 ± 0.51 days, oviposition period of 5.13 ± 0.64 days, and no post-oviposition period were observed. The mean lifetime parasitism rate of FAW larvae by female C. luteum was 49 ± 24. Longevity of unmated C. luteum was 14.44 ± 1.43 days for males and 12.83 ± 1.12 days for females. Mated ovipositing females lived for 7 days. Mean female and male progenies per adult female C. luteum was 28.11 ± 8.18 and 39.89 ± 4.76 respectively, with an overall sex ratio of 1.42 at 28 ± 1°C using second instar larvae. Total life cycle from oviposition to adult emergence was 23 ± 1 days. This study provides the basic information about C. luteum that could be utilised for mass rearing of this parasitoid under an augmentative biological control of FAW programme.","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"1-8"},"PeriodicalIF":1.6,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143448180","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