Journal of invertebrate pathology最新文献

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High prevalence and strain diversity of Melissococcus plutonius in Apis cerana in Guangxi, China 广西蜜蜂中高流行率和菌株多样性
IF 2.4 3区 生物学
Journal of invertebrate pathology Pub Date : 2026-02-01 Epub Date: 2025-10-29 DOI: 10.1016/j.jip.2025.108485
Xiaolin Cai , Chunxiu Pang , Fuchang Zhuo , Bo Hu , Xuehua Huang , Jiaxing Huang , Yuming Lu
{"title":"High prevalence and strain diversity of Melissococcus plutonius in Apis cerana in Guangxi, China","authors":"Xiaolin Cai ,&nbsp;Chunxiu Pang ,&nbsp;Fuchang Zhuo ,&nbsp;Bo Hu ,&nbsp;Xuehua Huang ,&nbsp;Jiaxing Huang ,&nbsp;Yuming Lu","doi":"10.1016/j.jip.2025.108485","DOIUrl":"10.1016/j.jip.2025.108485","url":null,"abstract":"<div><div><em>Melissococcus plutonius</em>, the agent of European foulbrood (EFB), has been well studied in <em>Apis mellifera</em> but its epidemiology in <em>Apis cerana</em> remains less understood. We surveyed 37 apiaries across Guangxi, China, and detected <em>M. plutonius</em> in 32.4%, 10.8%, and 27.0% of larvae, adult bees, and honey samples, respectively, all originating from asymptomatic colonies. Duplex PCR revealed frequent co-detection of typical and atypical strains. Viable isolates were recovered from 58.3% of PCR-positive larval samples. Multi-locus sequence typing (MLST) showed six isolates (T1, X16, L20, Q21, Q22, L32) clustering with the atypical reference strain DAT561, and one isolate (<em>P</em>6) clustering with the typical reference strain ATCC 35311. Our findings highlight the high prevalence and strain diversity of <em>M. plutonius</em> in <em>A. cerana</em> in subtropical Guangxi and emphasize the need for region-specific surveillance strategies.</div></div>","PeriodicalId":16296,"journal":{"name":"Journal of invertebrate pathology","volume":"214 ","pages":"Article 108485"},"PeriodicalIF":2.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145421952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High levels of Bt cry toxin resistant allele frequency in South Indian populations of cotton pink bollworm, Pectinophora gossypiella Saunders (Gelechiidae: Lepidoptera) 南印度棉铃虫Pectinophora gossypiella Saunders种群抗Bt cry毒素等位基因频率高。
IF 2.4 3区 生物学
Journal of invertebrate pathology Pub Date : 2026-02-01 Epub Date: 2025-09-08 DOI: 10.1016/j.jip.2025.108452
Suresh R. Jambagi , M. Mohan , T. Venkatesan , K. Muralimohan , D.N. Kambrekar , C.P. Mallapur , Neenu Augustine
{"title":"High levels of Bt cry toxin resistant allele frequency in South Indian populations of cotton pink bollworm, Pectinophora gossypiella Saunders (Gelechiidae: Lepidoptera)","authors":"Suresh R. Jambagi ,&nbsp;M. Mohan ,&nbsp;T. Venkatesan ,&nbsp;K. Muralimohan ,&nbsp;D.N. Kambrekar ,&nbsp;C.P. Mallapur ,&nbsp;Neenu Augustine","doi":"10.1016/j.jip.2025.108452","DOIUrl":"10.1016/j.jip.2025.108452","url":null,"abstract":"<div><div>The lack of compliance with refugia planting by growers of transgenic cotton expressing toxins from <em>Bacillus thuringiensis</em> (<em>Bt</em>) is a major factor contributing to the development of resistance to <em>Bt</em> toxins Cry1Ac and Cry2Ab and outbreak of pink bollworm, <em>Pectinophora gossypiella</em> in several cotton growing regions of India. The present study estimated the resistant alleles frequency in South Indian populations of <em>P. gossypiella</em> against Cry1Ac + Cry2Ab toxins produced by <em>Bt</em> Bollgard II® cotton. Among the 33 established isofemale families, 19 laid fertile eggs and reached the F<sub>1</sub> generation, of which 10 survived the F<sub>2</sub> screen. Further, individuals from four isofemale families survived the reconfirmation test at the F<sub>3</sub> generation, which was conducted to eliminate false-positive lines for the resistance. These four families are the true positives for carrying Cry toxin resistance alleles. The frequency of Cry toxin resistance alleles was estimated at 0.059, indicating a relatively high prevalence of individuals carrying resistant alleles for both Cry1Ac and Cry2Ab toxins. The present study affirms the existence of a high frequency of resistance alleles in individuals of <em>P. gossypiella</em> populations collected from South India. The outbreak-like situation of <em>P. gossypiella</em> in cotton fields underscores the urgent need for developing and implementing alternative technologies within an Integrated Pest Management (IPM) framework. The present estimates provide valuable baseline data for monitoring resistance alleles frequency in pink bollworm populations.</div></div>","PeriodicalId":16296,"journal":{"name":"Journal of invertebrate pathology","volume":"214 ","pages":"Article 108452"},"PeriodicalIF":2.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145033614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dysregulation of hepatopancreatic microRNAs in Penaeus vannamei in response to Ecytonucleospora hepatopenaei (EHP) infection: Implications for innate immunity and metabolic function 凡纳滨对虾对肝外核孢子虫(EHP)感染的肝胰腺microrna失调:对先天免疫和代谢功能的影响
IF 2.4 3区 生物学
Journal of invertebrate pathology Pub Date : 2026-02-01 Epub Date: 2025-10-27 DOI: 10.1016/j.jip.2025.108479
Li-Guo Yang , Lei Feng , Li-Yan Ma , Xue-Feng Song , Jia-Yuan Xu , Bian-Bian Zhang , Wen-Hong Fang , Xin-Cang Li
{"title":"Dysregulation of hepatopancreatic microRNAs in Penaeus vannamei in response to Ecytonucleospora hepatopenaei (EHP) infection: Implications for innate immunity and metabolic function","authors":"Li-Guo Yang ,&nbsp;Lei Feng ,&nbsp;Li-Yan Ma ,&nbsp;Xue-Feng Song ,&nbsp;Jia-Yuan Xu ,&nbsp;Bian-Bian Zhang ,&nbsp;Wen-Hong Fang ,&nbsp;Xin-Cang Li","doi":"10.1016/j.jip.2025.108479","DOIUrl":"10.1016/j.jip.2025.108479","url":null,"abstract":"<div><div>MicroRNAs (miRNAs) are known to modulate various immune responses and metabolic processes by targeting and silencing specific genes in invertebrates. However, the specific roles of miRNAs in the context of microsporidial infection in the shrimp <em>Penaeus vannamei</em> have not been well-defined. This study aimed to elucidate the functions of miRNAs in shrimp during the invasion by the microsporidian pathogen <em>Ecytonucleospora hepatopenaei</em> (EHP). To achieve this, we collected shrimp that had confirmed EHP infections and conducted a comprehensive transcriptional analysis. High-throughput sequencing data yielded 15,964,804 clean reads from the hepatopancreas of healthy shrimp and 14,301,330 clean reads from EHP-infected counterparts. From these samples, a total of 59 distinct miRNAs were identified. Notably, the expression levels of 31 miRNAs, with 16 being down-regulated and 15 up-regulated, were significantly altered in the hepatopancreas of EHP-infected shrimp when compared to the controls. The differentially expressed miRNAs were subjected to Gene Ontology (GO) analysis and target gene prediction to determine their biological relevance. The findings indicated that the miRNAs with altered expression are predominantly associated with immune response pathways and metabolic alterations, including those involved in the Toll-like receptor signaling pathway (Ko04620); the Toll and Imd signaling pathways (Ko04624); protein digestion and absorption (Ko04974); and the regulation of aldosterone synthesis and secretion (Ko04925). Collectively, our study advances our understanding of miRNAs’ roles within the innate immune system of shrimp and identifies potential novel targets for the management and prevention of EHP infections.</div></div>","PeriodicalId":16296,"journal":{"name":"Journal of invertebrate pathology","volume":"214 ","pages":"Article 108479"},"PeriodicalIF":2.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145401093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Entomopathogenic soil bacteria as biocontrol agents against Spodoptera litura (Fab): A sustainable approach 昆虫病原土壤细菌作为斜纹夜蛾(Spodoptera litura)的生物防治剂:一种可持续的方法。
IF 2.4 3区 生物学
Journal of invertebrate pathology Pub Date : 2026-02-01 Epub Date: 2025-09-23 DOI: 10.1016/j.jip.2025.108464
Pallvi Mehra , Arushi Mahajan , Prince Dhammi , Satish Koundal , Harvinder Singh Saini , Sanehdeep Kaur
{"title":"Entomopathogenic soil bacteria as biocontrol agents against Spodoptera litura (Fab): A sustainable approach","authors":"Pallvi Mehra ,&nbsp;Arushi Mahajan ,&nbsp;Prince Dhammi ,&nbsp;Satish Koundal ,&nbsp;Harvinder Singh Saini ,&nbsp;Sanehdeep Kaur","doi":"10.1016/j.jip.2025.108464","DOIUrl":"10.1016/j.jip.2025.108464","url":null,"abstract":"<div><div><em>Spodoptera litura</em> (Fabricius) (Lepidoptera: Noctuidae), commonly known as the tobacco caterpillar, is a polyphagous pest found worldwide, causing considerable damage to a variety of agricultural crops. The overuse of chemical insecticides against <em>S. litura</em> has led to the development of resistance, residue problem and ecological imbalance. To address these issues, sustainable and eco-friendly alternatives like microbial control has emerged as a key strategy in integrated pest management. Therefore, the present study was undertaken to assess the insecticidal properties of soil bacteria as potential biocontrol agents against <em>S. litura</em>. Among the screened bacteria, <em>Planococcus</em> sp. (KIC5), <em>Rhodococcus</em> sp. (MG1) and <em>Comamonas</em> sp. (C2) caused 82, 80 and 78 % mortality respectively, compared to 8 % in control <em>S</em>. <em>litura</em> larvae treated with leaves dipped in PBS only. Besides larvicidal activity, these bacteria also prolonged the overall development period with a prolongation of 5.63 days due to MG1, decreased adult emergence and caused morphological abnormalities in <em>S. litura</em>. A remarkable effect was also observed on nutritional indices of <em>S</em>. <em>litura</em> larvae in the form of decreased relative growth rate (RGR), relative consumption rate (RCR), efficiency of conversion of ingested food (ECI), efficiency of conversion of digested food (ECD), and altered approximate digestibility (AD). The significant adverse effects of KIC5, MG1 and C2 on various biological and nutritional parameters of <em>S. litura</em> indicate their potential as effective biocontrol agents against <em>S. litura</em>.</div></div>","PeriodicalId":16296,"journal":{"name":"Journal of invertebrate pathology","volume":"214 ","pages":"Article 108464"},"PeriodicalIF":2.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145149261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Protective effects of gallic acid against Vibrio parahaemolyticus-induced translucent post-larvae disease in Litopenaeus vannamei: insights into antibacterial and anti-virulence mechanisms 没食子酸对副溶血性弧菌诱导的凡纳滨对虾半透明幼虫后疾病的保护作用:抗菌和抗毒机制的见解
IF 2.4 3区 生物学
Journal of invertebrate pathology Pub Date : 2026-02-01 Epub Date: 2025-11-19 DOI: 10.1016/j.jip.2025.108499
Man-Hong Ye , Qian-Nan Han , Chuang Meng , Feng Ji , Bin Zhou
{"title":"Protective effects of gallic acid against Vibrio parahaemolyticus-induced translucent post-larvae disease in Litopenaeus vannamei: insights into antibacterial and anti-virulence mechanisms","authors":"Man-Hong Ye ,&nbsp;Qian-Nan Han ,&nbsp;Chuang Meng ,&nbsp;Feng Ji ,&nbsp;Bin Zhou","doi":"10.1016/j.jip.2025.108499","DOIUrl":"10.1016/j.jip.2025.108499","url":null,"abstract":"<div><div>Translucent post-larvae disease (TPD) is a lethal syndrome causing high mortality in post-larvae of <em>Litopenaeus vannamei</em>. This study investigated the protective efficacy of gallic acid (GA), a non-antibiotic compound, against TPD induced by a field isolate <em>Vibrio parahaemolyticus</em> TS-GE (<em>V</em>. <em>para</em>. TS-GE). Immersion challenge assays confirmed the high virulence of <em>V</em>. <em>para</em>. TS-GE, as it caused 100 % mortality in post-larvae within 24 h at 2.82 × 10<sup>7</sup> CFU/mL. Whole-genome sequencing revealed its genome comprised two chromosomes (3.50 Mb and 1.92 Mb) and three plasmids (69.7 kb, 60.7 kb, 60.5 kb). The 69.7-kb plasmid harbored TPD-associated virulence genes vhvp1 and vhvp2, while chromosomal genes encoded 40 type III secretion system components and thermolabile hemolysin. Pangenome analysis revealed the open genome nature of <em>V</em>. <em>parahaemolyticus</em> strains. Multi-locus sequence typing identified <em>V</em>. <em>para</em>. TS-GE as ST2621. <em>In vitro</em>, GA exhibited growth-inhibitory activity against <em>V</em>. <em>para</em>. TS-GE. <em>In vivo</em>, 200 μg/mL GA significantly reduced cumulative mortality (<em>P</em> &lt; 0.01) from 100 % to 18.3 %, preserving hepatopancreatic epithelium and midgut structure in <em>V</em>. <em>para</em>. TS-GE infected post-larvae. Mechanistic investigations revealed GA disrupted bacterial cell wall/membrane integrity, inhibited swimming motility, and suppressed biofilm formation. Molecular docking simulations predicted favorable binding of GA to virulence proteins VHVP1 (−6.3 kcal/mol) and VHVP2 (−7.8 kcal/mol), suggesting dual antibacterial and anti-virulence activities. These findings highlight GA as a promising antibiotic alternative for TPD control. Genomic data provide insights into the pathogenic adaptation of <em>V</em>. <em>para</em>. TS-GE in aquaculture.</div></div>","PeriodicalId":16296,"journal":{"name":"Journal of invertebrate pathology","volume":"214 ","pages":"Article 108499"},"PeriodicalIF":2.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145573662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Decoding the gene expression response of Cerastoderma edule to chronic trematode infection: A comparison among host tissues 解码荚膜荚膜对慢性吸虫感染的基因表达反应:宿主组织间的比较。
IF 2.4 3区 生物学
Journal of invertebrate pathology Pub Date : 2026-02-01 Epub Date: 2025-09-07 DOI: 10.1016/j.jip.2025.108451
Simão Correia , Andrés Blanco-Hortas , Daniel Garcia-Souto , Robert Poulin , Manuel Vera , Luísa Magalhães , Sergio Fernández-Boo
{"title":"Decoding the gene expression response of Cerastoderma edule to chronic trematode infection: A comparison among host tissues","authors":"Simão Correia ,&nbsp;Andrés Blanco-Hortas ,&nbsp;Daniel Garcia-Souto ,&nbsp;Robert Poulin ,&nbsp;Manuel Vera ,&nbsp;Luísa Magalhães ,&nbsp;Sergio Fernández-Boo","doi":"10.1016/j.jip.2025.108451","DOIUrl":"10.1016/j.jip.2025.108451","url":null,"abstract":"<div><div>Parasites can induce gene expression changes in their hosts, either benefiting the parasite or the host. In particular, trematodes are not only one of the most ubiquitous groups of aquatic parasites, they also have huge impacts on individual hosts with significant ecological and economic repercussions. The trematode <em>Bucephalus minimus</em> infects <em>Cerastoderma edule</em> (the edible cockle), a socioeconomically and ecologically important bivalve, as its first intermediate host. This parasite is one of the most harmful parasites infecting cockles, affecting their ability to reproduce, grow, and survive, thereby indirectly impacting ecosystem functioning. Despite the well-documented ecological effects of <em>B. minimus</em>, its impacts at a molecular level remain poorly understood. This study aimed to investigate the molecular mechanisms underlying <em>B. minimus</em> infection in cockles by analysing tissue-specific and systemic responses to long-term parasitic infection. It compared gene expression profiles in two critical tissues of naturally infected and non-infected cockles: the digestive gland, the primary target of infection, and the haemolymph, the backbone of the bivalve immune system. Results revealed extensive tissue-specific changes in gene expression. In the haemolymph, infected cockles showed significant downregulation of pathways related to cell division, cytoskeletal organization, and DNA repair, suggesting potentially parasite-induced reduction of immune responses and host cellular functions. Contrary to expectations, immune pathways did not show significantly increased expression, likely reflecting the chronic nature of infection and energy reallocation by the host. In the digestive gland, genes associated with gametogenesis, metabolism and immune function were downregulated, with no significant upregulation observed, except in some genes related to scavenger receptor activity and inflammation, suggesting localized immune responses. Shared responses among tissues included alterations in zinc ion transport and neurotransmitter biosynthesis, suggesting management of infection-induced stress. These findings highlight how <em>B. minimus</em> may manipulate host biology to suppress immunity and disrupt critical cellular processes, providing valuable insights into chronic trematode infections and host-parasite dynamics.</div></div>","PeriodicalId":16296,"journal":{"name":"Journal of invertebrate pathology","volume":"214 ","pages":"Article 108451"},"PeriodicalIF":2.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145029912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Crayfish plague and microsporidiosis occurrence in wild populations of the white-clawed crayfish Austropotamobius pallipes complex in Trentino (North-East Italy) 意大利东北部特伦蒂诺白爪小龙虾群野生种群小龙虾鼠疫和微孢子虫病的发生。
IF 2.4 3区 生物学
Journal of invertebrate pathology Pub Date : 2026-02-01 Epub Date: 2025-10-28 DOI: 10.1016/j.jip.2025.108487
Maria Cristina Bruno , Sonia Endrizzi , Andrea Basso , Valentina Paolini , Tobia Pretto
{"title":"Crayfish plague and microsporidiosis occurrence in wild populations of the white-clawed crayfish Austropotamobius pallipes complex in Trentino (North-East Italy)","authors":"Maria Cristina Bruno ,&nbsp;Sonia Endrizzi ,&nbsp;Andrea Basso ,&nbsp;Valentina Paolini ,&nbsp;Tobia Pretto","doi":"10.1016/j.jip.2025.108487","DOIUrl":"10.1016/j.jip.2025.108487","url":null,"abstract":"<div><div>One of the causes of the decline in distribution and abundance of the endangered white-clawed crayfish <em>Austropotamobius pallipes</em> complex throughout Europe is the invasion of alien crayfish, and the associated spread of infectious diseases, primarily the crayfish plague caused by <em>Aphanomyces astaci</em>. Another relevant disease is microsporidiosis (porcelain disease), caused by <em>Astathelohania contejeani</em> and <em>Nosema austropotamobii</em>. Between 2021 and 2024, we conducted a monitoring survey, aimed at mapping the distribution of <em>A. astaci</em>, <em>A. contejeani</em> and <em>N. austropotamobii</em> in wild populations of <em>A. pallipes</em> and in two non-indigenous species in Trentino (North-East Italy). We applied a non-invasive sampling method (cuticular swabs) in 33 populations of <em>A. pallipes</em>, 2 populations of <em>Procambarus clarkii</em> and 4 populations of <em>Faxonius limosus</em>, to investigate the presence of <em>A. astaci</em>. <em>Aphanomyces astaci</em> was detected in eight thriving populations of <em>A. pallipes</em>, and the presence of a low virulence genotype (genotype group A) was confirmed in one of them. <em>Aphanomyces astaci</em> was detected in one of the two populations of <em>P. clarkii</em>, as well as in one of the four populations of <em>F. limosus</em>. No mortality outbreaks in populations of <em>A. pallipes</em> were recorded in Trentino during the study period. Specimens with macroscopic signs of porcelain disease were found in thirteen populations of <em>A. pallipes,</em> abdominal muscle tissues were collected and subjected to molecular evaluation; microsporidiosis was detected in all the tested crayfish: seven populations were infected only by <em>A. contejeani</em>, and in six populations both microsporidia were detected. Crayfish from one population of <em>P. clarkii</em> and one of <em>F. limosus</em> were tested for microsporidiosis as well, but the results were negative. Based on the presence of chronically infected but thriving populations across the Trentino territory, we provide suggestions for the management of <em>A. pallipes</em> populations in conservation actions which require the movement of specimens (translocations, rearing in captivity).</div></div>","PeriodicalId":16296,"journal":{"name":"Journal of invertebrate pathology","volume":"214 ","pages":"Article 108487"},"PeriodicalIF":2.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145409162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Density of Schistocerca cancellata locusts (Orthoptera) affects infection development of Paranosema locustae (Microsporidia) 直翅目消纹血吸虫的密度影响地方副孢子虫的感染发展。
IF 2.4 3区 生物学
Journal of invertebrate pathology Pub Date : 2026-02-01 Epub Date: 2025-11-13 DOI: 10.1016/j.jip.2025.108496
Martina E. Pocco , Alina Cerquetti , Mariela Theiller , Carlos E. Lange
{"title":"Density of Schistocerca cancellata locusts (Orthoptera) affects infection development of Paranosema locustae (Microsporidia)","authors":"Martina E. Pocco ,&nbsp;Alina Cerquetti ,&nbsp;Mariela Theiller ,&nbsp;Carlos E. Lange","doi":"10.1016/j.jip.2025.108496","DOIUrl":"10.1016/j.jip.2025.108496","url":null,"abstract":"<div><div>We investigated the occurrence of density-dependent prophylactic resistance (DDPR) in the South American locust, <em>Schistocerca cancellata</em>, by exposing gregarious-phase nymphs to the microsporidium <em>Paranosema locustae</em> across a range of densities. Infection prevalence and intensity were highest at low densities and declined sharply at intermediate densities. At high densities, infections were virtually absent. A threshold density for the expression of DDPR may exist, likely above 130 nymphs/m<sup>2</sup>. These findings support the presence of DDPR in <em>S. cancellata</em> and suggest that <em>P. locustae</em> has limited potential as a biocontrol agent for managing gregarious populations during outbreaks.</div></div>","PeriodicalId":16296,"journal":{"name":"Journal of invertebrate pathology","volume":"214 ","pages":"Article 108496"},"PeriodicalIF":2.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145530666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Infection timelines and co-infection effects of Israeli acute paralysis virus and deformed wing virus in the honey bee (Apis mellifera) 以色列急性麻痹病毒和变形翅病毒在蜜蜂体内的感染时间及共感染效应
IF 2.4 3区 生物学
Journal of invertebrate pathology Pub Date : 2026-02-01 Epub Date: 2025-10-29 DOI: 10.1016/j.jip.2025.108484
Vincent Prayugo , Alexandria N. Payne , Bryony C. Bonning , Adam G. Dolezal
{"title":"Infection timelines and co-infection effects of Israeli acute paralysis virus and deformed wing virus in the honey bee (Apis mellifera)","authors":"Vincent Prayugo ,&nbsp;Alexandria N. Payne ,&nbsp;Bryony C. Bonning ,&nbsp;Adam G. Dolezal","doi":"10.1016/j.jip.2025.108484","DOIUrl":"10.1016/j.jip.2025.108484","url":null,"abstract":"<div><div>Honey bees are often exposed to and infected by multiple viruses, including deformed wing virus (DWV) and Israeli acute paralysis virus (IAPV). These pathogens are major contributors to colony failure, threatening the supply of pollination services in agriculture. However, understanding and modeling the infection and transmission dynamics of these viruses is hampered by gaps in knowledge about their infection timelines, specifically how virus load changes post-exposure. Moreover, while honey bees frequently experience co-occurring infections from multiple viruses, little is known about how co-infection affects virus-induced mortality and replication dynamics. We hypothesized that, while both DWV and IAPV are known to be highly infectious and can cause honey bee mortality, each presents a distinct infection timeline and peak infection intensity time window. In addition, we hypothesized that co-infection would result in increased mortality compared to individual virus infections due to increased pathogen-induced stress. To test these hypotheses, we exposed day-old honey bee workers to DWV, IAPV, or a combination of DWV and IAPV via carefully controlled experimental injections and tracked mortality and virus levels over time. After exposure, bees were maintained in the laboratory for 10 days and sampled daily for virus quantification. We observed a similar response pattern to both honey bee viruses in the first 24 h post-infection, where virus levels rapidly increased following inoculation. While DWV infection had persistently high virus levels and a delayed mortality response after peak DWV load was achieved, IAPV infection was rapidly followed by either mortality or a decline in virus load as bees recovered from infection. Co-infected bees showed some variation in mortality, although there were no significant differences in virus load between DWV or IAPV within co-infected bees compared to bees infected with the individual viruses. These results help answer fundamental questions related to the pathology of DWV and IAPV within honey bees that help clarify how these pathogens interact and persist within honey bee colonies.</div></div>","PeriodicalId":16296,"journal":{"name":"Journal of invertebrate pathology","volume":"214 ","pages":"Article 108484"},"PeriodicalIF":2.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145416885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Corrigendum to “Dissecting multitrophic interactions: The relationships among Entomophthora, their dipteran hosts, and associated bacteria” [J. Invertebr. Pathol. 213 (2025) 108425] 对“解剖多营养相互作用:昆虫疫霉及其双翅目宿主和相关细菌之间的关系”的更正[J]。Invertebr。中华病理学杂志。213 (2025)108425 [j]。
IF 2.4 3区 生物学
Journal of invertebrate pathology Pub Date : 2026-02-01 Epub Date: 2025-09-11 DOI: 10.1016/j.jip.2025.108449
Zuzanna Płoszka , Karol H. Nowak , Marta Tischer , Anna Michalik , Michał R. Kolasa , Piotr Łukasik
{"title":"Corrigendum to “Dissecting multitrophic interactions: The relationships among Entomophthora, their dipteran hosts, and associated bacteria” [J. Invertebr. Pathol. 213 (2025) 108425]","authors":"Zuzanna Płoszka ,&nbsp;Karol H. Nowak ,&nbsp;Marta Tischer ,&nbsp;Anna Michalik ,&nbsp;Michał R. Kolasa ,&nbsp;Piotr Łukasik","doi":"10.1016/j.jip.2025.108449","DOIUrl":"10.1016/j.jip.2025.108449","url":null,"abstract":"","PeriodicalId":16296,"journal":{"name":"Journal of invertebrate pathology","volume":"214 ","pages":"Article 108449"},"PeriodicalIF":2.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145040406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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