{"title":"Distribution, host range and host preferences of Dinocampus coccinellae (Hymenoptera: Braconidae): A worldwide database","authors":"P. Ceryngier, K. W. Franz, J. Romanowski","doi":"10.14411/eje.2023.004","DOIUrl":"https://doi.org/10.14411/eje.2023.004","url":null,"abstract":"","PeriodicalId":11940,"journal":{"name":"European Journal of Entomology","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42708495","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}
. Aquaporins (AQPs) are integral membrane proteins that can transport water and small molecules across cell membranes in organisms. In a previous report, we identi fi ed an AQP (SlAQP1) gene of the cotton leafworm, Spodoptera littoralis . In the current study, we identify and characterize two more SlAQP genes and their developmental and tissues expression. Predicted amino acid sequence and phylogenetic analysis revealed that SlAQP2 is a glycerol channel belonging to the insect speci fi c Eglp subfamily, whereas SlAQP3 is a water speci fi c channel belonging to the Prip subfamily. SlAQP2 expression was detected mainly in the fi rst four larval instars and adult males, whereas SlAQP3 was detected in all developmental stages. SlAQP2 gene expression was mainly detected in larval midgut and Malpighian tubules and adult male testes, whereas SlAQP3 was detected in all the tissues tested. RNAi mediated knockdown of each gene separately resulted in deleterious effects including larval and pupal mortality, deformed pupae and adults and prolonged development. Results were con fi rmed using qRT-PCR, which revealed downregulation of both genes after injection of larvae with gene speci fi c dsRNA. Our results con fi rm the presence of Prip and Eglp AQPs in S. littoralis and suggest that Eglp has a role in male reproductive ability.
{"title":"Characterization, expression analysis and RNAi-mediated knockdown of two aquaporin genes in the cotton leafworm, Spodoptera littoralis (Lepidoptera: Noctuidae)","authors":"S. Khalil, S. H. EL-GAMAL, S. Ibrahim, S. Elateek","doi":"10.14411/eje.2023.003","DOIUrl":"https://doi.org/10.14411/eje.2023.003","url":null,"abstract":". Aquaporins (AQPs) are integral membrane proteins that can transport water and small molecules across cell membranes in organisms. In a previous report, we identi fi ed an AQP (SlAQP1) gene of the cotton leafworm, Spodoptera littoralis . In the current study, we identify and characterize two more SlAQP genes and their developmental and tissues expression. Predicted amino acid sequence and phylogenetic analysis revealed that SlAQP2 is a glycerol channel belonging to the insect speci fi c Eglp subfamily, whereas SlAQP3 is a water speci fi c channel belonging to the Prip subfamily. SlAQP2 expression was detected mainly in the fi rst four larval instars and adult males, whereas SlAQP3 was detected in all developmental stages. SlAQP2 gene expression was mainly detected in larval midgut and Malpighian tubules and adult male testes, whereas SlAQP3 was detected in all the tissues tested. RNAi mediated knockdown of each gene separately resulted in deleterious effects including larval and pupal mortality, deformed pupae and adults and prolonged development. Results were con fi rmed using qRT-PCR, which revealed downregulation of both genes after injection of larvae with gene speci fi c dsRNA. Our results con fi rm the presence of Prip and Eglp AQPs in S. littoralis and suggest that Eglp has a role in male reproductive ability.","PeriodicalId":11940,"journal":{"name":"European Journal of Entomology","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46498172","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}
T. Sipos, T. Donkó, Á. Csóka, Tamás Kiss, S. Keszthelyi
{"title":"Comparative micro-computed tomographic analysis of the structure of brood cells and its effect on the development of the pupae of honey bee (Apis mellifera)","authors":"T. Sipos, T. Donkó, Á. Csóka, Tamás Kiss, S. Keszthelyi","doi":"10.14411/eje.2023.002","DOIUrl":"https://doi.org/10.14411/eje.2023.002","url":null,"abstract":"","PeriodicalId":11940,"journal":{"name":"European Journal of Entomology","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44642950","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}
Jing Li, Yu Wang, Yong Chen, Pengcheng Liu, Haoyuan Hu
{"title":"Effects of male age, body size and mating status on female mate preference and offspring sex ratio in Pachycrepoideus vindemmiae (Hymenoptera: Pteromalidae)","authors":"Jing Li, Yu Wang, Yong Chen, Pengcheng Liu, Haoyuan Hu","doi":"10.14411/eje.2023.001","DOIUrl":"https://doi.org/10.14411/eje.2023.001","url":null,"abstract":"","PeriodicalId":11940,"journal":{"name":"European Journal of Entomology","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47611103","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}
{"title":"North vs. South: Contrasting patterns in the phenotypic plasticity of the firebug Pyrrhocoris apterus (Hemiptera: Pyrrhocoridae) at the latitudinal extremes of its distribution range","authors":"D. Kutcherov, E. Lopatina","doi":"10.14411/eje.2022.048","DOIUrl":"https://doi.org/10.14411/eje.2022.048","url":null,"abstract":"","PeriodicalId":11940,"journal":{"name":"European Journal of Entomology","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48796789","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}
{"title":"The role of 10-hydroxy-Δ2-decenoic acid in the formation of fibrils of the major royal jelly protein 1/apisimin/24-methylenecholesterol complex isolated from honey bee (Apis mellifera) royal jelly","authors":"A. Buttstedt","doi":"10.14411/eje.2022.047","DOIUrl":"https://doi.org/10.14411/eje.2022.047","url":null,"abstract":"","PeriodicalId":11940,"journal":{"name":"European Journal of Entomology","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44253212","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}
{"title":"Epigeic harvestmen (Arachnida: Opiliones) of reforested Norway spruce forest stands in Slovakia: A case study","authors":"Ivan Mihál, Benjamín Jarčuška","doi":"10.14411/eje.2022.044","DOIUrl":"https://doi.org/10.14411/eje.2022.044","url":null,"abstract":"","PeriodicalId":11940,"journal":{"name":"European Journal of Entomology","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45469225","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}
{"title":"Genome-wide screening of genes involved in programming diapause in the next generation in silkworm, Bombyx mori (Lepidoptera: Bombycidae)","authors":"Yuichi Egi, K. Sakamoto","doi":"10.14411/eje.2022.042","DOIUrl":"https://doi.org/10.14411/eje.2022.042","url":null,"abstract":"","PeriodicalId":11940,"journal":{"name":"European Journal of Entomology","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42917061","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}
. Spodoptera littoralis (Boisduval) is a highly destructive and polyphagous insect pest of great economic importance. It develops throughout the year and the larvae are non-diapausing. Little work has been done on the time taken for food to pass through the gut of S. littoralis . Thus, this study on starving and well fed last instar larvae of S. littoralis aimed to determine the effect of temperature and photoperiod on the time taken for a meal to pass through the gut, defecation and digestion. The results indicate that it depended on temperature, photoperiod and hunger. The time that elapsed between a larva being fed and the production of the fi rst faecal pellet, which is a measure of the time it takes for food pass to pass through the gut (SFP), differed signi fi cantly at different temperatures and photoperiods. The SFP was longer at 15°C than at 30°C. At 20°C and under a short photoperiod, SFP was very much shorter than under a long photoperiod (18L : 6D). In addition, at 20°C, the time to defecation was signi fi cantly longer under a photoperiod of 12L : 12D than under continuous light. In all the tests > 95% of the larvae produced four faecal pellets per meal. The digestibility values varied signi fi cantly in the different tests. This study offers new insights into the passage of food from the crop to the rectum at different temperatures and photoperiods. This might help in understanding the adaptability of S. littoralis and may also help in controlling this important pest.
{"title":"The effect of temperature and photoperiod on the time taken for a meal to pass through the gut, defecation and digestion in the last larval instar of Spodoptera littoralis (Lepidoptera: Noctuidae)","authors":"E. Hegazi, W. Khafagi, E. Agamy, Ibrahim Abdallah","doi":"10.14411/eje.2022.041","DOIUrl":"https://doi.org/10.14411/eje.2022.041","url":null,"abstract":". Spodoptera littoralis (Boisduval) is a highly destructive and polyphagous insect pest of great economic importance. It develops throughout the year and the larvae are non-diapausing. Little work has been done on the time taken for food to pass through the gut of S. littoralis . Thus, this study on starving and well fed last instar larvae of S. littoralis aimed to determine the effect of temperature and photoperiod on the time taken for a meal to pass through the gut, defecation and digestion. The results indicate that it depended on temperature, photoperiod and hunger. The time that elapsed between a larva being fed and the production of the fi rst faecal pellet, which is a measure of the time it takes for food pass to pass through the gut (SFP), differed signi fi cantly at different temperatures and photoperiods. The SFP was longer at 15°C than at 30°C. At 20°C and under a short photoperiod, SFP was very much shorter than under a long photoperiod (18L : 6D). In addition, at 20°C, the time to defecation was signi fi cantly longer under a photoperiod of 12L : 12D than under continuous light. In all the tests > 95% of the larvae produced four faecal pellets per meal. The digestibility values varied signi fi cantly in the different tests. This study offers new insights into the passage of food from the crop to the rectum at different temperatures and photoperiods. This might help in understanding the adaptability of S. littoralis and may also help in controlling this important pest.","PeriodicalId":11940,"journal":{"name":"European Journal of Entomology","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44008688","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}
Jacopo D'Ercole, L. Dapporto, B. C. Schmidt, V. Dincă, Gerard Talavera, R. Vilà, P. D. Hebert
. One of the main consequences of globalization is the intensi fi cation of biological introductions. Because of their negative impact on environments, the early detection and monitoring of introduced species through molecular approaches is gaining increased uptake. This study assembles 2,278 DNA barcode records to examine contemporary patterns of sequence variation in mitochondrial cytochrome c oxidase I (COI) in fi ve butter fl y species introduced to the Nearctic, with a focus on Pieris rapae Linnaeus (Lepidoptera: Pieridae) and Thymelicus lineola Ochsenheimer (Lepidoptera: Hesperiidae). Parameters of genetic diversity were low (i.e., h < 0.606, π < 0.0039) for Nearctic populations of all analyzed species. Those of P. rapae and T. lineola showed marked genetic differentiation from their source populations in the Palearctic. Haplotype distributions in their Nearctic populations exposed a starburst pattern with a few common haplotypes known from Palearctic, and infrequent haplotypes diverging from them at only one or two nucleotide sites. Some uncommon haplotypes were only found in the Nearctic suggesting they originated after invasion, while others also occur in the Palearctic. This study provides an example of genetic paradox of invasion, where species often rapidly expand their distribution and become dominant in the new habitat despite their depleted levels of sequence variation.
{"title":"Patterns of DNA barcode diversity in butterfly species (Lepidoptera) introduced to the Nearctic","authors":"Jacopo D'Ercole, L. Dapporto, B. C. Schmidt, V. Dincă, Gerard Talavera, R. Vilà, P. D. Hebert","doi":"10.14411/eje.2022.039","DOIUrl":"https://doi.org/10.14411/eje.2022.039","url":null,"abstract":". One of the main consequences of globalization is the intensi fi cation of biological introductions. Because of their negative impact on environments, the early detection and monitoring of introduced species through molecular approaches is gaining increased uptake. This study assembles 2,278 DNA barcode records to examine contemporary patterns of sequence variation in mitochondrial cytochrome c oxidase I (COI) in fi ve butter fl y species introduced to the Nearctic, with a focus on Pieris rapae Linnaeus (Lepidoptera: Pieridae) and Thymelicus lineola Ochsenheimer (Lepidoptera: Hesperiidae). Parameters of genetic diversity were low (i.e., h < 0.606, π < 0.0039) for Nearctic populations of all analyzed species. Those of P. rapae and T. lineola showed marked genetic differentiation from their source populations in the Palearctic. Haplotype distributions in their Nearctic populations exposed a starburst pattern with a few common haplotypes known from Palearctic, and infrequent haplotypes diverging from them at only one or two nucleotide sites. Some uncommon haplotypes were only found in the Nearctic suggesting they originated after invasion, while others also occur in the Palearctic. This study provides an example of genetic paradox of invasion, where species often rapidly expand their distribution and become dominant in the new habitat despite their depleted levels of sequence variation.","PeriodicalId":11940,"journal":{"name":"European Journal of Entomology","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48408818","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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