Parasitology International最新文献_第7页

Exploring a low-compatibility population of Biomphalaria glabrata (Mollusca: Gastropoda) as a model for studying host-parasite interactions with Schistosoma mansoni (Trematoda: Digenea) 探索一个低相容性种群，作为研究宿主-寄生虫与曼氏血吸虫相互作用的模型（软体动物：腹足动物）。

IF 1.9 4区医学 Q3 PARASITOLOGY

Parasitology International

Pub Date : 2025-09-26 DOI: 10.1016/j.parint.2025.103176

Cristhiane Oliveira da Fonseca , Marina Moraes Mourão , Vitor do Espirito Santo Pimentel , Andréa Teixeira-Carvalho , Delza de Moura Soares Reis , Kleiton Esteves Costa , Dílcia Maria Repetição , Ludmila Gomes Muniz Rodrigues , Omar dos Santos Carvalho , Lângia Colli Montresor , Roberta Lima Caldeira

Most populations of Biomphalaria glabrata are highly compatible with Schistosoma mansoni strains, making it challenging to identify low-compatibility models to host-parasite interaction research. This study evaluated a B. glabrata population with low compatibility with the LE strain (SmLE) as a model. First, pigmented low susceptibility (LS) and albino susceptible (S) snails were paired to produce three progeny groups: Crossings (CR) between LS × S, LS (LS × LS), and S (S × S). F1 snails were individually challenged with SmLE, and compatibility and reproductive parameters were analyzed. Second, mass crossbreeding (150LS + 150S) produced F1 snails, later challenged with SmLE. Unchallenged F1 snails were then used for new mass crossbreeding, either without (CR1) or with (CR2) the introduction of LS snails (1:1 ratio). The F2 snails were challenged, and compatibility was assessed. In the pairings, the CR snails were predominantly pigmented (CRp). At 8 miracidia/snail challenge, F1 snails compatibility followed the pattern S > CRp > LS, consistent in both pairings and mass crossbreeding. In F2, CR1 resembled S, while CR2 showed intermediate compatibility (S=CR1 > CR2 > LS). Although crossings led to a reduction in the compatibility of F1 snails compared to the S group, the results suggest that resistance transfer between LS and S B. glabrata populations is less effective than previously demonstrated for susceptible/compatible and resistant/incompatible populations of Biomphalaria tenagophila. Thus, only traditional snail control measures (e.g., environmental modifications) are advisable in transmission foci maintained by B. glabrata. This study demonstrates that the population tested is not suitable for snail control strategies, although it may serve as a valuable experimental model for investigating host-parasite interactions.

大多数裸毛生物phalaria种群与曼氏血吸虫株系高度相容，这给宿主-寄生虫相互作用研究的低相容性模型的建立带来了挑战。本研究评价了一个与LE菌株（SmLE）亲和性较低的光斑白僵菌群体作为模型。首先，将色素低易感蜗牛（LS）和白化易感蜗牛(S)配对，产生3个后代组：LS × S、LS （LS × LS）和S （S × S）的杂交（CR）。用SmLE对F1钉螺进行单独攻毒，分析其亲和性和繁殖参数。其次，通过150LS + 150S进行大规模杂交，产生F1钉螺，然后用SmLE进行挑战。然后将未攻偶的F1钉螺进行新的大规模杂交，不引入（CR1）或引入（CR2） LS钉螺（1:1比例）。对F2钉螺进行攻毒，并进行相容性评价。在配对中，CR蜗牛主要是色素（CRp）。在8个miracidia/snail挑战下，F1蜗牛的亲和性遵循S > CRp > LS模式，在配对和大规模杂交中都是一致的。在F2中，CR1与S相似，而CR2表现出中间相容性（S=CR1 > CR2 > LS）。虽然与S组相比，杂交导致后代F1的亲和性降低，但结果表明，LS和S B. glabrata群体之间的抗性转移不如之前所证明的那样有效，在感/亲和和抗性/不亲和的tenagophila生物phalaria群体中。传统的蜗牛控制措施（例如，环境改变）在由光滑白僵菌维持的传播焦点中是不可取的。该研究表明，尽管被测种群可能作为研究宿主-寄生虫相互作用的有价值的实验模型，但它不适合用于蜗牛控制策略。

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引用次数: 0

Diversity, ecological status and species associations of myxozoans (Cnidaria: Myxosporea) parasites of Labeo senegalensis Valenciennes, 1842 (Cyprinidae) from lake Maga in Cameroon 喀麦隆Maga湖1842年塞内加尔拉比（Labeo senegalensis Valenciennes）粘虫（刺胞目：粘孢子目）寄生虫的多样性、生态状况及物种关联

IF 1.9 4区医学 Q3 PARASITOLOGY

Parasitology International

Pub Date : 2025-09-24 DOI: 10.1016/j.parint.2025.103174

Arnaud Deli , Guy Benoit Lekeufack-Folefack , Bienvenu Feudjio-Dongmo , Nelly Ornelle Onana-Ateba , Amandine Estelle Tchoutezo-Tiwa , Abraham Fomena

Classical parasitological methods, including fish autopsy and search of myxozoan species, were applied to examine 229 specimens of Labeo senegalensis collected monthly from Lake Maga, Cameroon, between October 2018 and August 2019. The myxosporean fauna of L. senegalensis was diverse and abundant, with 16 species recorded. Among these, Myxobolus sp.2, Myxobolus sp.6, Myxobolus sp.10, Thelohanellus sp.2, and Thelohanellus sp.3 were common. Intermediate occurrence was observed for Myxobolus sp.1, Myxobolus sp.3, Myxobolus sp.4, Myxobolus sp.5, Myxobolus sp.7, Myxobolus sp.8, Myxobolus sp.11, Thelohanellus sp.1 and Thelohanellus sp.4, whereas Myxobolus sp.9 and Myxidium sp. were scarce. The mean cyst load was high for Myxobolus sp.2, Myxobolus sp.5 and Thelohanellus sp.1; low for Myxobolus sp.3, Myxobolus sp.4, Myxobolus sp.6, Myxobolus sp.8, Myxobolus sp. 11, Thelohanellus sp.2 and Thelohanellus sp.3; and very low for Myxobolus sp.1, Myxobolus sp.7, Myxobolus sp.9 and Thelohanellus sp.4. Multiple infections were common: parasitism by five species occurred most frequently (26.8 %), followed by parasitism by six species (18.7 %). Monospecific infections were rare, with only four cases (1.8 %) recorded. Dice's coefficient combined with Forbes' index revealed eight strong associations between pairs of parasite species, significantly deviating from random expectations; six of these involved common parasite species. Conversely, five associations were less frequent than expected and involved species that typically colonized distinct host organs. Analysis of cyst load correlations indicated 15 positive and 8 negative Kendall's rank correlations among species. These findings suggest that polyspecific infections and positive interspecific interactions may contribute substantially to the pathogenic potential of myxozoan parasites in L. senegalensis.

2018年10月至2019年8月期间，研究人员采用经典的寄生虫学方法，包括鱼类解剖和黏液动物物种搜索，对每月从喀麦隆Maga湖采集的229份塞内加尔拉贝（Labeo senegalensis）标本进行了研究。塞内加尔l.s enegalensis黏液孢子动物区系丰富多样，共记录有16种。其中以Myxobolus sp.2、Myxobolus sp.6、Myxobolus sp.10、theelohanellus sp.2和theelohanellus sp.3较为常见。粘虫（Myxobolus sp.1）、粘虫（Myxobolus sp.3）、粘虫（Myxobolus sp.4）、粘虫（Myxobolus sp.5）、粘虫（Myxobolus sp.7）、粘虫（Myxobolus sp.8）、粘虫（Myxobolus sp.11）、粘虫（theelohanellus sp.1）和粘虫（theelohanellus sp.4）中等分布，而粘虫（Myxobolus sp.9）和粘虫（Myxobolus sp.4）较少。Myxobolus sp.2、Myxobolus sp.5和theelohanellus sp.1的平均囊负荷较高；低为Myxobolus sp.3、Myxobolus sp.4、Myxobolus sp.6、Myxobolus sp.8、Myxobolus sp. 11、theelohanellus sp.2和theelohanellus sp.3；而Myxobolus sp.1、Myxobolus sp.7、Myxobolus sp.9和theelohanellus sp.4极低。多重感染较为常见，以5种寄生虫寄生最多（26.8%），其次为6种寄生虫寄生（18.7%）。单特异性感染很少见，仅记录了4例（1.8%）。Dice的系数与福布斯指数相结合，揭示了成对寄生虫物种之间的八个强关联，明显偏离了随机预期；其中6个涉及常见的寄生虫种类。相反，5种关联的频率低于预期，并且涉及通常定殖于不同寄主器官的物种。囊负荷相关分析显示，各物种间肯德尔等级呈正相关15个，负相关8个。这些发现表明，多种感染和种间的积极相互作用可能是塞内加尔l.s neegalensis黏液寄生虫致病潜力的重要原因。

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引用次数: 0

Parasites in the bloodstream: Unraveling hematological chaos and clinical implications 血液中的寄生虫：揭开血液混乱和临床意义。

IF 1.9 4区医学 Q3 PARASITOLOGY

Parasitology International

Pub Date : 2025-09-23 DOI: 10.1016/j.parint.2025.103172

Bing Pang , Atieh Raoufi , Zahra Taghinejad , Milad Fakhraei , Mahsa Loran Esfahani , Parisa Heydari , Omolbanin Sargazi Aval , Hamed Soleimani Samarkhazan

Parasitic infections pose a significant global health burden, particularly in regions with limited medical resources and poor sanitation. These infections often have detrimental effects on the human body, including disruptions to the hematopoietic system, the intricate network responsible for blood cell production. Parasites such as Plasmodium, Schistosoma, and Leishmania are notorious for causing blood disorders such as anemia, thrombocytopenia, and leukopenia. Understanding the intricate interactions between parasites and the hematopoietic system is crucial for developing effective diagnostic, therapeutic, and preventive strategies. This review explores the multifaceted effects of parasitic infections on hematological parameters. The mechanisms are explored by which parasites can disrupt red blood cell production, leading to various types of anemia. Additionally, we examined the effects of parasites on platelet counts and white blood cell populations, highlighting the potential for both thrombocytopenia and leukocytosis. Furthermore, the role of parasites is examined in inducing coagulation disorders and the implications for clinical management. By understanding the complex interplay between parasites and the hematopoietic system, healthcare professionals can develop more targeted and effective interventions to address the significant health challenges posed by parasitic infections.

寄生虫感染对全球健康造成重大负担，特别是在医疗资源有限和卫生条件差的地区。这些感染通常对人体产生有害影响，包括破坏造血系统，这是负责血细胞生成的复杂网络。寄生虫如疟原虫、血吸虫和利什曼原虫因引起血液疾病如贫血、血小板减少症和白细胞减少症而臭名昭著。了解寄生虫和造血系统之间复杂的相互作用对于制定有效的诊断、治疗和预防策略至关重要。本文综述了寄生虫感染对血液学参数的多方面影响。研究人员探索了寄生虫破坏红细胞生成的机制，从而导致各种类型的贫血。此外，我们检查了寄生虫对血小板计数和白细胞群的影响，强调了血小板减少症和白细胞增多症的可能性。此外，寄生虫的作用是检查在诱导凝血障碍和临床管理的意义。通过了解寄生虫和造血系统之间复杂的相互作用，医疗保健专业人员可以制定更有针对性和有效的干预措施，以解决寄生虫感染带来的重大健康挑战。

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引用次数: 0

Endoparasites in yellow anaconda (Eunectes notaeus) in the wild through coproparasitological tools 用共寄生虫学方法研究野生黄水蟒体内的寄生虫。

IF 1.9 4区医学 Q3 PARASITOLOGY

Parasitology International

Pub Date : 2025-09-23 DOI: 10.1016/j.parint.2025.103173

Mariané Belen Mañez , Alan Ariel Santilli Poch , Josefina Lacunza , Juan Facundo Draque , Mariano Barros , Lorena De Felice , Juan Manuel Unzaga , Julia Inés Diaz

Snakes constitute the largest group of reptiles and play a crucial role in food chains, contributing to the balance of ecosystems. Despite this, they remain the least studied reptiles in the wild. This study aimed to identify the parasitic forms present in a wild population of yellow anacondas (Eunectes notaeus) from La Estrella marsh, Formosa, Argentina, through faecal matter analysis using flotation, sedimentation, and staining techniques. Between 2019 and 2023, 150 faecal samples were collected from the “Yellow Anaconda Management Program” in Fortín La Soledad. The samples were processed using the qualitative modified Ritchie sedimentation technique (ST), Willis flotation technique (FT), and Kinyoun staining. Parasitic forms belonging to four taxa were recovered. The prevalence of parasitism (P) was 64 % (ST) and 38 % (FT), and the following taxa were detected: Crepidobothrium sp. (Cestoda) eggs (P = 44.66 % ST and 24.66 % FT), Telorchis sp. (Digenea) eggs (P = 26 % ST and 18 % FT), and Nematoda larvae and eggs (P = 12 % ST and 2.66 % FT). Also, coccidia were detected using the FT (P = 1.33 %). The Ritchie method was more effective than the Willis method, specifically in recovering Crepidobothrium eggs and nematode larvae, while the Willis method was the only one that detected coccidia. No Cryptosporidium oocysts were found. In this study, the diagnosis of parasitic forms represents a valuable contribution to the ophidian parasitology, as well as an evaluation of the effectiveness of the techniques used.

蛇是爬行动物中最大的一类，在食物链中起着至关重要的作用，有助于生态系统的平衡。尽管如此，它们仍然是野外研究最少的爬行动物。摘要本研究以阿根廷La Estrella沼泽黄水蟒（Eunectes notaeus）为研究对象，利用浮选、沉淀及染色等方法，对其粪便进行分析。2019年至2023年期间，从Fortín La Soledad的“黄色蟒蛇管理计划”中收集了150份粪便样本。样品采用定性改良Ritchie沉淀法（ST）、Willis浮选法（FT）和Kinyoun染色法进行处理。恢复了4个分类群的寄生形态。寄生的患病率(P)是64年 % (ST)和38 %(英尺),发现了下面的分类单元:Crepidobothrium sp。(绦虫类)鸡蛋(P =  % ST和24.66 % 44.66英尺),Telorchis sp。(复殖类)鸡蛋(P = 26 % ST和18 %英尺),和线虫纲幼虫和卵(P = 12 % ST和2.66 %英尺)。FT检测球虫（P = 1.33 %）。Ritchie法比Willis法更有效，特别是在回收Crepidobothrium卵和线虫幼虫方面，而Willis法是唯一检测球虫的方法。未发现隐孢子虫卵囊。在这项研究中，寄生形式的诊断代表了对蛇寄生虫学的宝贵贡献，以及对所使用技术的有效性的评估。

{"title":"Endoparasites in yellow anaconda (Eunectes notaeus) in the wild through coproparasitological tools","authors":"Mariané Belen Mañez , Alan Ariel Santilli Poch , Josefina Lacunza , Juan Facundo Draque , Mariano Barros , Lorena De Felice , Juan Manuel Unzaga , Julia Inés Diaz","doi":"10.1016/j.parint.2025.103173","DOIUrl":"10.1016/j.parint.2025.103173","url":null,"abstract":"<div><div>Snakes constitute the largest group of reptiles and play a crucial role in food chains, contributing to the balance of ecosystems. Despite this, they remain the least studied reptiles in the wild. This study aimed to identify the parasitic forms present in a wild population of yellow anacondas (Eunectes notaeus) from La Estrella marsh, Formosa, Argentina, through faecal matter analysis using flotation, sedimentation, and staining techniques. Between 2019 and 2023, 150 faecal samples were collected from the “Yellow Anaconda Management Program” in Fortín La Soledad. The samples were processed using the qualitative modified Ritchie sedimentation technique (ST), Willis flotation technique (FT), and Kinyoun staining. Parasitic forms belonging to four taxa were recovered. The prevalence of parasitism (P) was 64 % (ST) and 38 % (FT), and the following taxa were detected: Crepidobothrium sp. (Cestoda) eggs (P = 44.66 % ST and 24.66 % FT), Telorchis sp. (Digenea) eggs (P = 26 % ST and 18 % FT), and Nematoda larvae and eggs (P = 12 % ST and 2.66 % FT). Also, coccidia were detected using the FT (P = 1.33 %). The Ritchie method was more effective than the Willis method, specifically in recovering Crepidobothrium eggs and nematode larvae, while the Willis method was the only one that detected coccidia. No Cryptosporidium oocysts were found. In this study, the diagnosis of parasitic forms represents a valuable contribution to the ophidian parasitology, as well as an evaluation of the effectiveness of the techniques used.</div></div>","PeriodicalId":19983,"journal":{"name":"Parasitology International","volume":"111 ","pages":"Article 103173"},"PeriodicalIF":1.9,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145150391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Active constituent nonacosane from Sphaeranthus indicus (Asterales: Asteraceae) leaves as a potent larvicidal agent against Aedes aegypti (Diptera: Culicidae) and Culex quinquefasciatus (Diptera: Culicidae) 从印度沙蚊叶中提取有效成分壬烷醚，对埃及伊蚊（双翅目：库蚊科）和致倦库蚊（双翅目：库蚊科）有较强的杀幼虫作用。

IF 1.9 4区医学 Q3 PARASITOLOGY

Parasitology International

Pub Date : 2025-09-19 DOI: 10.1016/j.parint.2025.103171

Alex Yagoo , M.C. John Milton , Jelin Vilvest , Mariya Vaishnika A , Kedike Balakrishna

Mosquitoes are major carriers of diseases such as dengue, lymphatic filariasis, malaria, chikungunya, and Japanese encephalitis, as they feed on blood and act as ectoparasites. This study focuses on the effectiveness of a plant-derived insecticide, specifically the hexane extract from Sphaeranthus indicus leaves, against Aedes aegypti and Culex quinquefasciatus mosquitoes. By conducting phytochemical extraction, fractionation, and spectroscopic analysis, ten fractions were isolated. One of these fractions showed significant mosquito-killing activity, with nonacosane identified as the primary active component. Various bioassays, including tests for eggs, larvae, and pupae, were conducted. Nonacosane exhibited ovicidal activity, with effectiveness rates of 16.4 % and 17.8 % at 2 ppm against Ae. aegypti and Cx. quinquefasciatus, respectively. Larvicidal and pupicidal tests further confirmed its strong activity, with LC₅₀ values of 2.63 ppm and 2.47 ppm for larvae, and 2.98 ppm and 2.67 ppm for pupae of Ae. aegypti and Cx. quinquefasciatus, respectively. The mosquitocidal effectiveness of nonacosane was comparable to that of established insecticides like azadirachtin and temephos. This research highlights the potential of plant-based compounds in developing effective and environmentally sustainable mosquito control strategies, especially in light of the increasing resistance to synthetic insecticides.

蚊子是登革热、淋巴丝虫病、疟疾、基孔肯雅热和日本脑炎等疾病的主要携带者，因为它们以血液为食并充当体外寄生虫。本研究主要研究了一种植物源性杀虫剂，特别是从白球叶中提取的己烷提取物对埃及伊蚊和致倦库蚊的有效性。通过植物化学提取、分馏和光谱分析，分离得到10个组分。其中一种组分具有显著的杀蚊活性，其主要活性成分为壬烷醚。进行了各种生物测定，包括卵、幼虫和蛹的试验。在2 ppm浓度下，壬烷醚对伊蚊的杀卵率分别为16.4 %和17.8 %。埃及伊蚊和Cx。分别quinquefasciatus。对伊蚊幼虫和蛹的LC50分别为2.63 ppm和2.47 ppm，对蛹的LC50分别为2.98 ppm和2.67 ppm。埃及伊蚊和Cx。分别quinquefasciatus。壬烷的杀蚊效果与印楝素和双硫磷等现有杀虫剂相当。这项研究强调了植物基化合物在开发有效和环境可持续的蚊虫控制策略方面的潜力，特别是考虑到对合成杀虫剂的抗性日益增加。

{"title":"Active constituent nonacosane from Sphaeranthus indicus (Asterales: Asteraceae) leaves as a potent larvicidal agent against Aedes aegypti (Diptera: Culicidae) and Culex quinquefasciatus (Diptera: Culicidae)","authors":"Alex Yagoo , M.C. John Milton , Jelin Vilvest , Mariya Vaishnika A , Kedike Balakrishna","doi":"10.1016/j.parint.2025.103171","DOIUrl":"10.1016/j.parint.2025.103171","url":null,"abstract":"<div><div>Mosquitoes are major carriers of diseases such as dengue, lymphatic filariasis, malaria, chikungunya, and Japanese encephalitis, as they feed on blood and act as ectoparasites. This study focuses on the effectiveness of a plant-derived insecticide, specifically the hexane extract from Sphaeranthus indicus leaves, against Aedes aegypti and Culex quinquefasciatus mosquitoes. By conducting phytochemical extraction, fractionation, and spectroscopic analysis, ten fractions were isolated. One of these fractions showed significant mosquito-killing activity, with nonacosane identified as the primary active component. Various bioassays, including tests for eggs, larvae, and pupae, were conducted. Nonacosane exhibited ovicidal activity, with effectiveness rates of 16.4 % and 17.8 % at 2 ppm against Ae. aegypti and Cx. quinquefasciatus, respectively. Larvicidal and pupicidal tests further confirmed its strong activity, with LC50 values of 2.63 ppm and 2.47 ppm for larvae, and 2.98 ppm and 2.67 ppm for pupae of Ae. aegypti and Cx. quinquefasciatus, respectively. The mosquitocidal effectiveness of nonacosane was comparable to that of established insecticides like azadirachtin and temephos. This research highlights the potential of plant-based compounds in developing effective and environmentally sustainable mosquito control strategies, especially in light of the increasing resistance to synthetic insecticides.</div></div>","PeriodicalId":19983,"journal":{"name":"Parasitology International","volume":"111 ","pages":"Article 103171"},"PeriodicalIF":1.9,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145113796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Notoedres cati-induced bilateral erythemato-ceruminous otitis externa in a cat 猫双侧外耳红斑-耵聍炎。

IF 1.9 4区医学 Q3 PARASITOLOGY

Parasitology International

Pub Date : 2025-09-18 DOI: 10.1016/j.parint.2025.103168

Lorena-Eliza Mastan , Andrada-Silvia Cârstolovean , Lavinia-Alexandra Lipan , Ligia-Rebeca Muntean , Ioana-Mădălina Moraru , Aurora-Livia Ursache , Bogdan Sevastre , Viorica Mircean

Notoedric mange, caused by Notoedres cati (N. cati), is a rare but severe parasitic skin disease primarily affecting stray cats, with zoonotic potential. This case report describes a one-year-old intact male European Shorthair presented with extensive cervico-facial skin lesions and systemic illness signs. Clinical examination revealed severe pruritus, alopecia, thick crusts, bilateral erythemato-ceruminous otitis externa and deep pyoderma, with the maximum severity score on the clinical mange scale. Complementary tests confirmed N. cati infestation through skin scrapings and ear wax examination, alongside concurrent Toxocara cati, Dipylidium spp., and Giardia duodenalis infections. Hematological findings indicated a systemic inflammatory response. Treatment comprised topical and systemic antiparasitics (esafoxolaner, praziquantel, eprinomectin and fenbendazole), oral antibiotics (cephalexin), antipruritic therapy (prednisolone), and supportive skin care. Follow-up examinations at days 8, 12, 15, and 21 demonstrated progressive clinical improvement, with resolution of mange, endoparasitic infections, otitis, and deep pyoderma by the end of treatment. This case highlights the need for early recognition and comprehensive management of notoedric mange, particularly in stray feline populations. The observed association between N. cati infestation and otitis externa suggests that its role in feline ear disease may be underestimated.

猫爪病是由猫爪病引起的一种罕见但严重的寄生虫皮肤病，主要影响流浪猫，具有人畜共患的潜力。本病例报告描述了一只一岁的完整雄性欧洲短毛犬，表现为广泛的颈部-面部皮肤病变和全身性疾病体征。临床检查表现为严重瘙痒、脱发、厚痂、双侧外耳红斑-耵聍炎和深部脓皮病，严重程度评分最高。补充试验通过皮肤刮擦和耳垢检查证实猫奈虫感染，同时伴有猫弓形虫、双螺旋虫和十二指肠贾第鞭毛虫感染。血液学结果显示全身炎症反应。治疗包括局部和全身抗寄生虫（依普诺菌素、吡喹酮、依普诺菌素和芬苯达唑）、口服抗生素（头孢氨苄）、止痒治疗（强的松龙）和支持性皮肤护理。在第8、12、15和21天的随访检查显示，临床进展性改善，治疗结束时，坏疽、内寄生虫感染、中耳炎和深部脓皮病得到解决。这一案例强调了早期认识和全面管理非甾体病管理的必要性，特别是在流浪猫种群中。观察到的猫奈瑟螨感染与外耳炎之间的关联表明，猫奈瑟螨在猫耳疾病中的作用可能被低估了。

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引用次数: 0

A family concept for the genus Stomachicola Yamaguti, 1934 (Digenea: Hemiuroidea) and new hemiuroid species from marine fishes of Vietnam 越南海鱼半尿总科及半尿新种。

IF 1.9 4区医学 Q3 PARASITOLOGY

Parasitology International

Pub Date : 2025-09-18 DOI: 10.1016/j.parint.2025.103170

Yana I. Ivashko , Dmitry M. Atopkin , Nguyen Van Ha , Hoang Van Hien , Vladimir V. Besprozvannykh

New morphological and molecular data generated for hemiuroid trematodes from fishes of coastal waters of Cat Ba Island, Northern Vietnam. The trematode Stomachicola muraenesocis was detected in the intestines of eels Pisodonophis boro. Vietnamese specimens of S. muraenesocis were identical to trematodes from Iran by morphology and molecular data and have some differences with specimens from South Korea by 28S rRNA gene sequence data. Results of p-distance estimation and phylogenetic analysis of Hemiuroidea specimens of Stomachicola differ from other representatives of the superfamily at the level of different families. Based on these data, a new family for Stomachicola was created. A new species of the genus Lecithaster, L. pseudosayori n. sp., from belonid fish species was validated. These trematodes are close to L. sayori and L. confusus by morphological and molecular data, respectively. Two specimens of Lecithocladium sp. detected in belonid fishes were similar to L. excisum by both morphological and molecular data. Phylogenetic tree topologies show agreements about Lecithasteridae species differentiation and definitive host specificity.

越南北部吉霸岛沿海水域鱼类类甲吸虫的形态和分子新资料。在鲫鱼肠道中检出村氏胃吸虫。越南产村氏绦虫标本形态和分子特征与伊朗产吸虫相同，28S rRNA基因序列与韩国产吸虫有一定差异。在不同科的水平上，胃科半总纲标本的p距离估计和系统发育分析结果与其他超科代表存在差异。基于这些数据，我们创建了一个新的口腔科。本文从贝类鱼类中发现了一新种：l.p pseudosayori n. sp.。这些吸虫在形态和分子上分别与sayori L.和confusus L.接近。在belonid鱼类中检测到的两个卵磷脂属（Lecithocladium sp.）标本在形态和分子上都与l.e exisum相似。系统发育树拓扑结构显示了卵磷脂科物种分化和最终宿主特异性的一致性。

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引用次数: 0

Plerocercoid Rockacestus cf. piriei from the White Sea stickleback and cod: Genetic analysis with description of ultrastructure of the tegument and excretory system 白海棘鱼和鳕鱼的Rockacestus cf. piriei：遗传分析及被皮和排泄系统的超微结构描述。

IF 1.9 4区医学 Q3 PARASITOLOGY

Parasitology International

Pub Date : 2025-09-17 DOI: 10.1016/j.parint.2025.103169

Natalia M. Biserova , Andrey D. Logvinenko , Ilya I. Gordeev

Plerocercoids of the order Phyllobothriidea were discovered in the gastrointestinal tract of the three-spined stickleback, Gasterosteus aculeatus, and White Sea cod, Gadus morhua marisalbi, in the White Sea. Based on the 28S rDNA sequence, plerocercoids from Gasterosteus aculeatus belong to Rockacestus cf. piriei. A phylogenetic tree was reconstructed to infer their evolutionary relationships. Several aspects of larval biology were described: the prevalence and intensity of infection were quantified in host fishes; movement patterns of the scolex and body were documented in vitro. The maximum infection rate of Rockacestus cf. piriei plerocercoids in Gasterosteus aculeatus was observed in June 2021. Some seasonality of fish infection by these parasites can be linked with three-spined stickleback migration. The detailed morphology of the scolex and microtriches, as well as the ultrastructure of the tegument and excretory system, have been studied using scanning and transmission electron microscopy. Unlike other cestodes, the tegument lacks rod-shaped bodies in its distal cytoplasm and exhibits uniform microtriches, specifically capilliform filitriches. Subtegumental musculature is well developed. The excretory system comprises cyrtocytes and syncytial epithelium forming protonephridial funnels, thin tubules and canals. The cytoplasm of the canal wall contains numerous electron-dense rod-shaped bodies oriented parallel to the surface. Several specific features in the ultrastructure of the tegument and excretory epithelium of the R. cf. piriei plerocercoid have been identified, contributing to the taxonomic and functional understanding of marine cestodes.

在白海的三棘棘鱼（Gasterosteus aculeatus）和白海鳕鱼（Gadus morhua marisalbi）的胃肠道中发现了弹尾鱼目。根据28S rDNA序列分析，刺尾棘鱼（Gasterosteus acerococotes）属piriei类。重建了系统发育树来推断它们的进化关系。描述了幼虫生物学的几个方面：对宿主鱼的流行率和感染强度进行了量化；在体外记录了头节和体的运动模式。2021年6月，棘尾绦虫在棘尾绦虫中感染率最高。鱼类感染这些寄生虫的一些季节性可能与三刺鱼的迁徙有关。用扫描电镜和透射电镜研究了头节和微食槽的详细形态，以及被皮和排泄系统的超微结构。与其他类动物不同，被皮在其远端细胞质中缺乏杆状体，并表现出均匀的微毛，特别是毛状的绒毛。被膜下肌肉组织发育良好。排泄系统包括细胞和合胞上皮，形成原肾管、细管和管道。管壁细胞质中含有大量平行于管壁表面的电子密集棒状体。目前，研究人员已经鉴定出了海贝壳类动物被皮和排泄上皮的几个特殊超微结构特征，有助于对海贝壳类动物的分类和功能的认识。

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引用次数: 0

Coinfection of large yellow croaker Larimichthys crocea by Trypanosoma sp. (Euglenozoa: Kinetoplastea) and Ceratomyxa xiangshanensis n. sp. (Cnidaria: Myxosporea) in offshore net cage systems in the East China Sea 东海近海网箱系统中大黄鱼（Larimichthys crocea）被锥虫（真核纲：活动体纲）和香角虫（刺胞纲：粘孢子纲）共同感染。

IF 1.9 4区医学 Q3 PARASITOLOGY

Parasitology International

Pub Date : 2025-09-09 DOI: 10.1016/j.parint.2025.103167

Bo Zhang , Xiao Xie , Chao Zheng , Xingyu Wang , Kurt Buchmann , Fei Yin

The large yellow croaker, Larimichthys crocea, is an indigenous fish in the East China Sea and a highly ranked marine fish species, primarily reared in the coastal waters of the East China Sea. Recently, infections with hemoflagellates (causing trypanosomiasis) in this fish species were detected on the southeast coast of China; however, the pathogenicity has not been established. Here, an outbreak of mass mortality in L. crocea farmed in Zhejiang province is reported with coinfection of hemoflagellates and myxosporeans. For hemoflagellates, blood smears reveal elongated trypomastigotes measured 20.5 ± 3.4 μm × 1.9 ± 0.4 μm, and an anterior free flagellum is 11.9 ± 2.6 μm in length. Molecular analysis of the small subunit ribosomal sequence showed that the isolated hemoflagellate is conspecific with the Trypanosoma sp. previously reported in the Fujian province, which suggests a neglected transmission event along with transboundary fish delivery. Besides, combining morphological disparities with no more than 98.09 % molecular identity, the biliary myxosporean is regarded as a novel species, Ceratomyxa xiangshanensis n. sp. Histological examination of infected fish tissues showed trypanosome-associated pigment aggregation in melanoma-macrophage centers of the spleen and kidney. The subcutaneous tissue of the head is observed with moderate inflammatory infiltration in the dermis. We suggest that the year-round feeding operation and seasonal fish delivery may favor native circulation and transboundary transmission of these endoparasites. This work expands our knowledge of the parasite fauna harbored in reared L. crocea and frames the importance of routine surveillance for emerging parasitic diseases.

大黄鱼（Larimichthys crocea）是中国东海的一种本地鱼类，也是一种高级海鱼，主要在中国东海沿岸水域养殖。最近，在中国东南沿海发现了这种鱼类的血鞭毛虫感染（引起锥虫病）；然而，致病性尚未确定。在这里，报告了浙江省养殖的一场大规模死亡暴发，并伴有血鞭毛虫和粘孢子虫的共同感染。血鞭毛虫,血涂片显示细长trypomastigotes测量20.5 ±3.4  μm ×  1.9±0.4  μm,和一个前免费鞭毛是11.9 ±2.6  μm的长度。小亚基核糖体序列的分子分析表明，分离的血鞭毛虫与福建省先前报道的锥虫属同源，这表明与越界鱼类传递一起被忽视的传播事件。此外，结合形态学差异和不超过98.09 %的分子同一性，胆道粘孢子虫被认为是一个新种，Ceratomyxa xiangshanensis n. sp.感染鱼组织的组织学检查显示，在脾脏和肾脏的黑色素瘤-巨噬细胞中心有锥虫相关的色素聚集。头部皮下组织可见真皮有中度炎症浸润。我们认为，全年的饲养操作和季节性的鱼类运输可能有利于这些内寄生虫的本地循环和跨界传播。这项工作扩大了我们对饲养的鳄鱼体内寄生虫动物群的认识，并阐明了对新出现的寄生虫疾病进行常规监测的重要性。

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引用次数: 0

Corrigendum to First report of Saccocoelioides nanii (Digenea: Haploporidae) infecting an extremophile host, Jenynsia sulfurica (Cyprinodontiformes: Anablepidae) Parasitology International, Volume 110 (2026), 103148 纳米Saccocoelioides nanii （Digenea：单孔虫科）感染嗜极微生物宿主，Jenynsia硫（Cyprinodontiformes: Anablepidae）国际寄生虫学，第110卷（2026），103148。

IF 1.9 4区医学 Q3 PARASITOLOGY

Parasitology International

Pub Date : 2025-09-08 DOI: 10.1016/j.parint.2025.103163

Macarena S. De Martino , Guillermo E. Teran , Patricia M.C. Romero , Felipe Alonso , Melisa Moncada , German Reig Cardarella , Gaston Aguilera , Martin M. Montes

引用次数: 0