Bulletin of Entomological Research最新文献

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Evaluation of diets from various maize hybrids reveals potential tolerance traits against Spodoptera littoralis (Boisd) as measured by developmental and digestive performance. 对各种玉米杂交种的日粮进行评估,从发育和消化性能的角度揭示了玉米对鞘翅目旋毛虫(Boisd)的潜在耐受特性。
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/S0007485324000403
Shirin Alekaram, Seyed Ali Hemmati, Masumeh Ziaee, Lukasz L Stelinski
{"title":"Evaluation of diets from various maize hybrids reveals potential tolerance traits against <i>Spodoptera littoralis</i> (Boisd) as measured by developmental and digestive performance.","authors":"Shirin Alekaram, Seyed Ali Hemmati, Masumeh Ziaee, Lukasz L Stelinski","doi":"10.1017/S0007485324000403","DOIUrl":"10.1017/S0007485324000403","url":null,"abstract":"<p><p><i>Spodoptera littoralis</i> (Boisd) (Lepidoptera: Noctuidae) is a highly polyphagous insect that significantly reduces agricultural production of several food staples. We evaluated performance of <i>S. littoralis</i> on several meridic diets based on various maize hybrids, including Oteel, Simon, Valbum, SC703, and SC704. Growth, feeding behaviours, and activity of digestive enzymes of <i>S. littoralis</i> were examined under laboratory conditions. In addition, selected biochemical characteristics of maize hybrid seeds were evaluated, including starch, protein, anthocyanin, as well as phenolic and flavonoid contents, to examine relationships between plant properties and digestive performance of <i>S. littoralis</i>. Performance of <i>S. littoralis</i> on maize hybrids, as measured by nutritional indices, was related to both proteolytic and amylolytic activities quantified using gut extracts. Larval <i>S. littoralis</i> reared on SC703 exhibited the highest efficiency of conversion of digested food, while the lowest was recorded in those fed on the Oteel hybrid. <i>S. littoralis</i> reared on SC703 and Oteel also exhibited the highest and lowest relative growth rates, respectively. The highest levels of proteolytic activity in <i>S. littoralis</i> were measured from larvae reared on the SC703 hybrid, while the lowest levels occurred on the Oteel and Valbum hybrids. Amylolytic activity was lowest in larvae reared on SC703 and Valbum hybrids and highest in larvae reared on the Oteel hybrid. Our results suggest that the SC703 hybrid was the most suitable host for <i>S. littoralis</i>, while the Oteel hybrid demonstrated the greatest level of tolerance against <i>S. littoralis</i> of those evaluated. We discuss the potential utility of maize hybrids exhibiting tolerance traits against this cosmopolitan pest with reference to cultivation of tolerant varieties and identification of specific tolerance traits.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"642-651"},"PeriodicalIF":16.4,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142342124","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
Functional analysis of AgJHAMT gene related to developmental period in Aphis gossypii Glover. Aphis gossypii Glover 中与发育期有关的 AgJHAMT 基因的功能分析。
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/S000748532400049X
Lianjun Zhang, Yuan Li, Xinhui Xu, Mengmeng Feng, Rukiya Turak, Xiaoning Liu, Hongsheng Pan
{"title":"Functional analysis of <i>AgJHAMT</i> gene related to developmental period in <i>Aphis gossypii</i> Glover.","authors":"Lianjun Zhang, Yuan Li, Xinhui Xu, Mengmeng Feng, Rukiya Turak, Xiaoning Liu, Hongsheng Pan","doi":"10.1017/S000748532400049X","DOIUrl":"10.1017/S000748532400049X","url":null,"abstract":"<p><p><i>Aphis gossypii</i> is one of the most economically important agricultural pests that cause serious crop losses worldwide, and the indiscriminate chemical application causes resistance development in <i>A. gossypii,</i> a major obstacle to successful control. In this study, we selected the up-regulated expression gene <i>AgJHAMT</i>, which was enriched into juvenile hormone pathway though transcriptome sequencing analysis of the cotton aphids that fed on transgenic cotton lines expressing ds<i>AgCYP6CY3</i> (the TG cotton). The <i>AgJHAMT</i> gene was overexpressed in cotton aphids which fed on the TG cotton, and its expression profile during the nymphs was clarified. Then, silencing <i>AgJHAMT</i> could advance the developmental period of cotton aphids by 0.5 days compared with control groups. The <i>T</i> and <i>t</i> values of cotton aphids in the dsJHAMT treatment group (6.88 ± 0.15, 1.65 ± 0.06) were significantly shorter than that of the sprayed H<sub>2</sub>O control group (7.6 ± 0.14, 1.97 ± 0.09) (<i>P</i> < 0.05), respectively. The fast growth caused by <i>AgJHAMT</i> silencing was rescued by applying the JH analogue, methoprene. Overall, these findings clarified the function of <i>AgJHAMT</i> in the developmental period of <i>A. gossypii</i>. This study contributes to further clarify the molecular mechanisms of delaying the growth and development of cotton aphids by the transgenic cotton lines expressing ds<i>AgCYP6CY3</i>.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"707-716"},"PeriodicalIF":16.4,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142342125","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
Identification and validation of reference genes for RT-qPCR analysis in Sclerodermus guani (Hymenoptera: Bethylidae). Sclerodermus guani (Hymenoptera: Bethylidae) RT-qPCR 分析参考基因的鉴定和验证。
IF 1.6 3区 农林科学
Bulletin of Entomological Research Pub Date : 2024-10-01 Epub Date: 2024-10-07 DOI: 10.1017/S0007485324000427
Rina Zhao, Xiaomeng Guo, Ling Meng, Baoping Li
{"title":"Identification and validation of reference genes for RT-qPCR analysis in <i>Sclerodermus guani</i> (Hymenoptera: Bethylidae).","authors":"Rina Zhao, Xiaomeng Guo, Ling Meng, Baoping Li","doi":"10.1017/S0007485324000427","DOIUrl":"10.1017/S0007485324000427","url":null,"abstract":"<p><p>Gene expression studies in organisms are often conducted using reverse transcriptase-quantitative polymerase chain reaction (RT-qPCR), and the accuracy of RT-qPCR results relies on the stability of reference genes. We examined ten candidate reference genes in <i>Sclerodermus guani</i>, a parasitoid wasp that is a natural enemy of long-horned beetle pests in forestry, including <i>ACT, EF1α, Hsc70, Hsp70, SRSF7, α-tubulin, RPL7A, 18S, 28S,</i> and <i>SOD1</i>, regarding variable biotic and abiotic factors such as body part, life stage, hormone, diet, and temperature. Data were analysed using four dedicated algorithms (ΔCt, BestKeeper, NormFinder, and geNorm) and one comparative tool (RefFinder). Our results showed that the most stable reference genes were <i>RPL7A</i> and <i>EF1α</i> regarding the body part, <i>SRSF7</i> and <i>Hsc70</i> regarding the diet, <i>RPL7A</i> and <i>α-tubulin</i> regarding the hormone, <i>SRSF7</i> and <i>RPL7A</i> regarding the life stage, and <i>SRSF7</i> and <i>α-tubulin</i> regarding temperature. To ascertain the applicability of specific reference genes, the expression level of the target gene (<i>ACPase</i>) was estimated regarding the body part using the most stable reference genes, <i>RPL7A</i> and <i>EF1α</i>, and the least stable one, <i>SOD1</i>. The highest expression level of <i>ACPase</i> was observed in the abdomen, and the validity of <i>RPL7A</i> and <i>EF1α</i> was confirmed. This study provides, for the first time, an extensive list of reliable reference genes for molecular biology studies in <i>S. guani</i>.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"613-621"},"PeriodicalIF":1.6,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142380082","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
Lethal and sublethal concentrations spirodiclofen stress may increase the adaptation of Panonychus citri (Acari: Tetranychidae). 致死和亚致死浓度螺螨酯胁迫可能会增强柑橘盘尼丝虫(蛔虫科:Tetranychidae)的适应性。
IF 16.4 3区 农林科学
Bulletin of Entomological Research Pub Date : 2024-10-01 Epub Date: 2024-10-16 DOI: 10.1017/S0007485324000087
Hongyan Wang, Haifeng Wang, Kexin Wen, Tao Xie, Shigan Luo, Jiawei Wu, Bin Xia
{"title":"Lethal and sublethal concentrations spirodiclofen stress may increase the adaptation of <i>Panonychus citri</i> (Acari: Tetranychidae).","authors":"Hongyan Wang, Haifeng Wang, Kexin Wen, Tao Xie, Shigan Luo, Jiawei Wu, Bin Xia","doi":"10.1017/S0007485324000087","DOIUrl":"10.1017/S0007485324000087","url":null,"abstract":"<p><p><i>Panonychus citri</i> is one of the most destructive pests in citrus orchards, exhibiting varying degrees of tolerance to numerous insecticides, such as spirodiclofen. To effectively manage pests, this study explores the response of <i>P. citri</i> to spirodiclofen stress from the perspectives of life history, enzymatic parameters, and reproduction. The effects of two concentrations (LC<sub>30</sub> and LC<sub>50</sub>) of spirodiclofen on the biological parameters of <i>P. citri</i> were evaluated by the life table method. The results showed that the development duration, fecundity, oviposition days, and lifespan were shortened, though the pre-oviposition period of two treatments was prolonged in comparison with the control. A significant decrease was recorded in the net reproductive rate (<i>R</i><sub>0</sub>) and the mean generation time (<i>T</i>) for the two treatments. Nevertheless, the intrinsic rate of increase (<i>r</i>) and the rate of increase (<i>λ</i>) were not significantly affected in the LC<sub>30</sub> treatment, whereas they declined in the LC<sub>50</sub> treatment. The enzyme activity assay resulted in higher activities of catalase (CAT), superoxide dismutase (SOD), peroxidase (POD), and carboxylesterase (CarE), among the treatments than the control. In contrast, the treatments recorded lower cytochromeP450 (CYP450) and Glutathione S-transferase (GST) activities than the control. Furthermore, the study detected that relative mRNA expression of Vitellogenin (Vg) and Vitellogenin receptor (VgR) for two treatments were lower than the control. In summary, two concentrations of spirodiclofen inhibited progeny growth and fecundity of <i>P. citri</i>. Additionally, the results of this study may support further research on tolerance of <i>P. citri</i> in response to spirodiclofen stress.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"591-597"},"PeriodicalIF":16.4,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142458591","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
Analysis of the immune transcriptome of the invasive pest spotted wing drosophila infected by Steinernema carpocapsae. 入侵害虫斑翅果蝇感染 Steinernema carpocapsae 后的免疫转录组分析。
IF 1.6 3区 农林科学
Bulletin of Entomological Research Pub Date : 2024-10-01 Epub Date: 2024-09-27 DOI: 10.1017/S0007485324000543
A Garriga, D Toubarro, A Morton, N Simões, F García-Del-Pino
{"title":"Analysis of the immune transcriptome of the invasive pest spotted wing drosophila infected by <i>Steinernema carpocapsae</i>.","authors":"A Garriga, D Toubarro, A Morton, N Simões, F García-Del-Pino","doi":"10.1017/S0007485324000543","DOIUrl":"10.1017/S0007485324000543","url":null,"abstract":"<p><p><i>Drosophila suzukii</i> is a pest of global concern due to its great impact on several crops. The entomopathogenic nematode <i>Steinernema carpocapsae</i> was highly virulent to the larvae of the fly although some immune mechanisms were triggered along the infection course. Thus, to understand the gene activation profile we performed a comparative transcriptome of <i>D. suzukii</i> larvae infected with <i>S. carpocapsae</i> and <i>Xenorhabdus nematophila</i> to map the differentially expressed genes involved in the defence response. The analysis exposed the induction of genes involved in the humoral response such as the antimicrobial peptides and pattern-recognition receptors while there was a suppression of the cellular defence. Besides, genes involved in melanisation, and clot formation were downregulated hindering the encapsulation response and wound healing. After the infection, larvae were in a stress condition with an enrichment of metabolic and transport functionalities. Concerning the stress response, we observed variations of the heat-shock proteins, detoxification, and peroxidase enzymes. These findings set a genetical comprehensive knowledge of the host-pathogen relation of <i>D. suzukii</i> challenged with <i>S. carpocapsae</i> which could support further comparative studies with entomopathogenic nematodes.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"622-630"},"PeriodicalIF":1.6,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142342123","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 dietary restriction on development, mating, and reproduction in the natural predator Pardosa pseudoannulata. 食物限制对天敌 Pardosa pseudoannulata 的发育、交配和繁殖的影响。
IF 16.4 3区 农林科学
Bulletin of Entomological Research Pub Date : 2024-10-01 Epub Date: 2024-10-07 DOI: 10.1017/S0007485324000415
Xiaoming Wang, Wei Li, Li Song, Zuojun Xie, Jie Liu, Yao Zhao, Yu Peng
{"title":"Impact of dietary restriction on development, mating, and reproduction in the natural predator <i>Pardosa pseudoannulata</i>.","authors":"Xiaoming Wang, Wei Li, Li Song, Zuojun Xie, Jie Liu, Yao Zhao, Yu Peng","doi":"10.1017/S0007485324000415","DOIUrl":"10.1017/S0007485324000415","url":null,"abstract":"<p><p>Dietary restriction-influenced biological performance is found in many animal species. <i>Pardosa pseudoannulata</i> is a dominant spider species in agricultural fields and is important for controlling pests. In this study, three groups - a control group (CK group), a re-feeding group (RF group), and a dietary restriction group (RT group) - were used to explore development, mating, reproduction, and the expression levels of <i>Vg</i> (vitellogenin) and <i>VgR</i> (vitellogenin receptor) genes in the spider. The findings indicated that when subjected to dietary restriction, the carapace size, weight of the spiderlings, and weight of the adults exhibited a decrease. Furthermore, the preoviposition period and egg stage were observed to be prolonged, while the number of spiderlings decreased. It was also observed that re-feeding reduced cannibalism rates and extended the preoviposition period. Dietary restriction also affected the expression of the <i>Vg</i>-<i>3</i> gene in the spider. These results will contribute to the understanding of the impact of dietary restriction in predators of pest control, as well as provide a theoretical foundation for the artificial rearing and utilisation of the dominant spider in the field.</p>","PeriodicalId":9370,"journal":{"name":"Bulletin of Entomological Research","volume":" ","pages":"674-681"},"PeriodicalIF":16.4,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142380083","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
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}
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