Veterinary parasitology, regional studies and reports最新文献_第7页

Sarcoptes scabiei infestation in llamas (Lama glama) of the Argentine Puna: Clinical study, and morphological and molecular mite identification 阿根廷普纳地区骆驼（Lama glama）的疥螨感染：临床研究以及形态和分子螨虫鉴定

IF 1.4 Q3 PARASITOLOGY

Veterinary parasitology, regional studies and reports

Pub Date : 2024-11-16 DOI: 10.1016/j.vprsr.2024.101166

Fabiana E. Sosa , Amanda A. Quiroga , Diego M. Medina , Juan F. Micheloud , Hugo M. Borsetti , Nancy Hernández , Mónica Florin-Christensen , Sandra R. Romero

Sarcoptic mange has been described in domestic South American camelids (SACs), exported to non-Andean countries, and in wild SAC in their natural habitat. Reports on the incidence of this infestation in llamas or alpacas raised in their original location, on the other hand, are missing. The present study aimed to detect and characterize cases of sarcoptic mange in herds of llamas (Lama glama) raised in the high plateau region (Puna) of the province of Jujuy, Argentina. Mange-compatible lesions were found in 2 out of 45 examined llama herds, in which 7 and one affected animals were detected. Six llamas had an alopecic presentation, represented by hairless foci, accompanied by small dry crusts and a slightly greyish tone in the skin, while the other 2 showed a parakeratotic presentation, characterized by large crusts with serosanguineous drainage, in different parts of the body. Histopathology of skin biopsies revealed scarce mixed inflammatory infiltrate in the dermis and few acari in the epidermis, or abundant infiltrate and numerous acari, accompanying these two presentations, respectively. Microscopic examination of skin scrapings, as well as sequencing of a cytochrome oxidase subunit I gene fragment confirmed in all cases that the etiological agent was Sarcoptes scabiei. Interviews with the producers allowed the conclusion that the alopecic presentation corresponded to animals that had received some type of informal acaricide treatment. The parakeratotic form, on the other hand, corresponded to untreated animals, strongly suggesting that this is the typical manifestation of sarcoptic mange in llamas. To the best of our knowledge, this study is the first clinical, histopathological, parasitological, and molecular description of sarcoptic mange in llamas raised in the Andean region. This study also highlights the need for a complete anamnesis to reach an accurate diagnosis, and for validated protocols for the treatment of this disease in SACs.

在出口到非安第斯国家的南美家养骆驼（SAC）和自然栖息地的野生南美家养骆驼中，都有疥癣病的描述。而在原产地饲养的骆马或羊驼中，这种疥癣病的发病率却鲜有报道。本研究旨在检测在阿根廷胡胡伊省高原地区（普纳）饲养的骆马（Lama glama）群中的肉毒疥癣病例，并分析其特征。在 45 个接受检查的骆驼群中，有 2 个发现了疥癣病变，其中分别有 7 只和 1 只骆驼患病。其中 6 只骆驼出现脱毛症状，表现为无毛病灶，伴有小的干结痂，皮肤略呈灰白色；另外 2 只骆驼出现副角化症状，表现为身体不同部位出现大面积结痂，并伴有血清排泄物。皮肤活检的组织病理学检查显示，这两种表现分别伴有真皮层稀少的混合性炎症浸润和表皮层少量吸虫，或大量浸润和大量吸虫。皮肤刮片的显微镜检查和细胞色素氧化酶亚基 I 基因片段的测序证实，所有病例的病原体都是疥螨。通过与生产者的访谈，我们得出结论，秃头病的动物都曾接受过某种非正式的杀螨剂治疗。而副鳞屑病则与未接受过治疗的动物相对应，这有力地表明这是骆驼肉眼疥癣的典型表现。据我们所知，这项研究首次从临床、组织病理学、寄生虫学和分子学角度描述了安第斯地区饲养的骆驼的肉疣病。这项研究还强调，需要进行全面的病史分析，以得出准确的诊断结果，并需要制定有效的方案来治疗 SAC 中的这种疾病。

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引用次数: 0

Occurrence of Chiorchis fabaceus (Trematoda: Cladorchiidae) in a wild Antillean manatee (Trichechus manatus manatus): New parasitological data for this imperilled sirenian 在一只野生安的列斯海牛（Trichechus manatus manatus）体内发现了 Chiorchis fabaceus（吸虫纲：Cladorchiidae）：这种濒危海牛的新寄生虫学数据

IF 1.4 Q3 PARASITOLOGY

Veterinary parasitology, regional studies and reports

Pub Date : 2024-11-16 DOI: 10.1016/j.vprsr.2024.101164

Manuel Uribe , Katherine Arévalo-González , Anja Taubert , Carlos Hermosilla , Jenny J. Chaparro-Gutiérrez

Parasites impact wildlife populations and ecosystem health, thereby demanding regular monitoring. As part of the national conservation effort to preserve the free-ranging sirenians in Colombia, a parasitological survey was conducted between 2011 and 2023 on naturally deceased Antillean manatees (Trichechus manatus manatus). A total of 17 stranded carcasses were analysed for the occurrence of parasites. Herein, trematode adult stages were recovered from the stomach, small intestine, caecum and colon of an adult male manatee and microscopically analysed. Additionally, molecular analysis was conducted based on an almost complete coding sequence of the ITS1–5.8S-ITS2, partial sequence of 18S and 28S ribosomal DNA (rDNA) genes. Phylogenetic analysis clustered the trematode sequences within Chiorchis fabaceus species, thus constituting the first adult-based sequences isolated for the species. Presented data contribute to a better understanding of the sirenian parasite diversity.

寄生虫会影响野生动物数量和生态系统健康，因此需要定期监测。作为哥伦比亚国家保护散养海牛工作的一部分，2011 年至 2023 年期间对自然死亡的安的列斯海牛（Trichechus manatus manatus）进行了寄生虫调查。共对 17 具搁浅的海牛尸体进行了寄生虫分析。在此，我们从一只成年雄性海牛的胃、小肠、盲肠和结肠中提取了吸虫成虫，并进行了显微镜分析。此外，还根据几乎完整的 ITS1-5.8S-ITS2 编码序列、18S 和 28S 核糖体 DNA（rDNA）基因的部分序列进行了分子分析。系统进化分析将该吸虫序列聚类在 Chiorchis fabaceus 种内，从而首次为该物种分离出基于成虫的序列。所提供的数据有助于更好地了解寄生虫的多样性。

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引用次数: 0

Occurrence of Eutrombicula goeldii (Trombidiformes: Trombiculidae) in free-living Callithrix jacchus Linnaeus, 1758 (Primates: Callitrichidae) in northeastern Brazil 巴西东北部自由生活的Callithrix jacchus Linnaeus, 1758（灵长类：Callitrichidae）体内Eutrombicula goeldii（Trombidiformes: Trombiculidae）的发生率

IF 1.4 Q3 PARASITOLOGY

Veterinary parasitology, regional studies and reports

Pub Date : 2024-11-13 DOI: 10.1016/j.vprsr.2024.101159

Jéssica Souza Dias , Ricardo Bassini-Silva , Fernando de Castro Jacinavicius , Raone Beltrão-Mendes , Stephen F. Ferrari , Roseli La Corte

The present study reports the occurrence of Eutrombicula goeldii (Oudemans) (Trombidiformes: Trombiculidade) on free-living common marmosets, Callithrix jacchus, in Sergipe state, northeastern Brazil. Fifty-two marmosets were captured from 12 family groups, and during the examination of some individuals, orange mites were detected in the peripheral region of the ear and eyelids. The mites were collected via skin scrapings and transparent adhesive tape and observed under a microscope. Then, the material was stored in microtubes containing 70 % alcohol for better identification later. All the material was identified as E. goeldii. While these mites were detected in almost all (93.1 %) of the marmosets captured in the Atlantic Forest, they were not found in any of the 23 individuals from the Caatinga site. The macroscopic examination revealed aggregations of orange mites in the peripheral region of the ear, where the infested individuals had superficial lesions and crusts. This is the first record of E. goeldii parasitizing C. jacchus and the third occurrence of this species infesting mammals in Brazil.

本研究报告了巴西东北部塞尔希培州自由生活的普通狨猴（Callithrix jacchus）身上发生的Eutrombicula goeldii (Oudemans)（瘤螨目：瘤螨科）。在对一些个体进行检查时，在耳朵和眼睑的外围区域发现了橙色螨虫。通过皮肤刮片和透明胶带收集螨虫，并在显微镜下进行观察。然后，将材料保存在含有 70% 酒精的微管中，以便日后进行更好的鉴定。所有材料都被鉴定为 E. goeldii。在大西洋森林捕获的狨猴中，几乎所有（93.1%）都发现了这种螨虫，但在卡廷加地区捕获的 23 只狨猴中却没有发现。宏观检查发现，橘螨聚集在耳朵的外围区域，受感染的个体耳朵表面有病变和结痂。这是E. goeldii寄生于鸦科动物的首次记录，也是该物种在巴西第三次侵扰哺乳动物。

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引用次数: 0

Detection and isolation of Leishmania infantum from natural infected dog in Türkiye 从土耳其自然感染的狗身上检测和分离出婴儿利什曼原虫

IF 1.4 Q3 PARASITOLOGY

Veterinary parasitology, regional studies and reports

Pub Date : 2024-11-12 DOI: 10.1016/j.vprsr.2024.101154

Aysegul Damlapinar , Umut Berberoglu , Mesut Mungan , Bekir Celebi , Aycan N. Gazyagci , Kader Yildiz

Some clinical signs such as cachexia, alopecia, exfoliative dermatitis, hair loss, and swollen lymph nodes were observed in a one-year-old crossbred male dog living in a rural area of Kirikkale province, Türkiye, was presented to the veterinary clinic by its owner. Anaemia, leucopenia, hyperglobulinemia, and bilirubinemia were detected. Seropositivity was detected using Leishmania IgG/IgM Rapid Test. The amastigote forms of the parasite were observed in the lymph node aspirates. Viable promastigotes were observed in the samples obtained from the Novy-MacNeal-Nicolle medium (NNN) tubes. The parasite DNA was extracted from the promastigotes produced in the NNN medium using a DNA extraction kit according to the manufacturer's instructions. The specific bands indicating the gene regions of L. infantum (350 bp and 730 bp for HSP20 and HSP70, respectively) were observed. Additionally, BLASTn analysis revealed 100 % similarity with GenBank-deposited L. infantum sequences. The sequences were submitted to GenBank (Accession numbers: OR806945 and OR806946). According to the author's knowledge, it is the first dog isolate deposited in the collection of the Microbiology Reference Laboratories and Biological Products Department, General Directorate of Public Health, Ministry of Health, Ankara, Türkiye. The isolate (TR_L. infantum CanL-1_damla) has been preserved by cryopreservation at −150 °C for further studies.

一只生活在土耳其基里凯莱省（Kirikkale）农村地区的一岁大杂交雄犬被主人带到兽医诊所就诊，它出现了一些临床症状，如恶病质、脱发、剥脱性皮炎、脱毛和淋巴结肿大。该犬出现贫血、白细胞减少、高球蛋白血症和胆红素血症。使用利什曼病 IgG/IgM 快速检测试剂盒检测出血清阳性。在淋巴结抽吸物中观察到寄生虫的变形体。在从 Novy-MacNeal-Nicolle 培养基（NNN）试管中获得的样本中观察到了存活的原生体。根据生产商的说明，使用 DNA 提取试剂盒从 NNN 培养基中产生的原生体中提取寄生虫 DNA。结果显示，HSP20 和 HSP70 分别有 350 bp 和 730 bp 的特异性条带。此外，BLASTn 分析表明，这些序列与 GenBank 中的婴儿痢疾杆菌序列相似度为 100%。这些序列已提交至 GenBank（登录号：OR806945 和 OR806946）。据作者所知，这是存放在土耳其安卡拉卫生部公共卫生总局微生物参考实验室和生物产品部的第一个狗分离物。该分离物（TR_L. infantum CanL-1_damla）已在-150 °C下低温保存，以备进一步研究。

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引用次数: 0

Molecular prevalence of Giardia duodenalis in domestic pig (Sus domesticus) and captive wild boar (Sus scrofa) in China: A systematic review and meta-analysis 中国家猪和圈养野猪中十二指肠贾第虫的分子流行率：系统回顾与荟萃分析

IF 1.4 Q3 PARASITOLOGY

Veterinary parasitology, regional studies and reports

Pub Date : 2024-11-06 DOI: 10.1016/j.vprsr.2024.101151

Junqiang Li , Jingjing Sun , Yuancai Chen , Chunxiang Zhou , Pitambar Dhakal , Longxian Zhang , Zhixiang Wang

Giardia duodenalis is a typical enteric protozoan pathogen that causes diarrhea in humans and various animals, including domestic pigs (Sus domesticus) and wild boars (Sus scrofa). A healthy livestock would help maintain a hygienic environment, which is crucial for human health. This review has summarized the molecular prevalence of G. duodenalis among various types of pigs (domestic pigs and captive wild boars) in China on the basis of relevant data. A random-effects model of meta-analysis was used to estimate the overall and subgroup-based pooled prevalence of G. duodenalis, and the I² index was used for the evaluation of the heterogeneity. Altogether, 23 datasets from 20 studies reporting G. duodenalis in 8282 pigs and captive wild boars across 12 regions in China revealed a 6.5 % (95 % CI, 6.0–7.0) pooled molecular prevalence of the parasite. Sensitivity analysis demonstrated that the data included in this study were stable. Meta-regression analysis showed that regions, type of pigs, age, and gender were not notably associated with the prevalence of G. duodenalis in the swine population in China. It was found that five G. duodenalis assemblages (A-E) are capable of infecting pigs in China, and assemblage E was found to be significantly dominant genotype (i.e., 73.2 % for the positive samples). G. duodenalis assemblages A and B were of major zoonotic concern with regard to humans; however, some reports have also documented assemblages C, D, and E from humans. Until now, information on the occurrence and distribution of G. duodenalis assemblages in Chinese pigs is limited, and therefore requires a rigorous and in-depth research.

十二指肠贾第虫是一种典型的肠道原生动物病原体，会导致人类和各种动物腹泻，包括家猪（Sus domesticus）和野猪（Sus scrofa）。健康的家畜有助于保持卫生的环境，这对人类健康至关重要。本综述以相关数据为基础，总结了中国各类猪（家猪和圈养野猪）中十二指肠球虫病的分子流行情况。采用随机效应荟萃分析模型估算了十二指肠球菌的总流行率和基于亚组的集合流行率，并使用 I2 指数评估了异质性。共有来自 20 项研究的 23 个数据集报告了中国 12 个地区 8282 头猪和圈养野猪的十二指肠球虫寄生情况，结果显示该寄生虫的总分子流行率为 6.5%（95% CI，6.0-7.0）。敏感性分析表明，本研究中的数据是稳定的。元回归分析表明，地区、猪的类型、年龄和性别与中国猪群中十二指肠球虫的流行率并无明显关联。研究发现，在中国有五种十二指肠球菌（G. duodenalis）组合（A-E）能够感染猪，而组合 E 是显著的优势基因型（即阳性样本的 73.2%）。A 型和 B 型十二指肠球菌是人畜共患的主要病原菌，但也有报道称 C 型、D 型和 E 型十二指肠球菌也感染了人类。到目前为止，有关中国猪中十二指肠球菌的发生和分布的信息还很有限，因此需要进行严格和深入的研究。

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引用次数: 0

Identification of a novel GP60 subtype family of Cryptosporidium wrairi from capybaras (Hydrochoerus hydrochaeris) inhabiting urban areas in the state of Mato Grosso do Sul, Brazil 从巴西南马托格罗索州城市地区栖息的水豚中鉴定出新型 GP60 亚型隐孢子虫家族

IF 1.4 Q3 PARASITOLOGY

Veterinary parasitology, regional studies and reports

Pub Date : 2024-11-06 DOI: 10.1016/j.vprsr.2024.101152

Camila Michele de Souza Hossotani , Fabio Eiji Fukumori , Flávia Maria de Almeida Moreira , Bárbara Braga Ferreira Marta , Débora Regina Romualdo da Silva , Marcelo Vasconcelos Meireles

Capybaras (Hydrochoerus hydrochaeris) are hosts for several parasites of public health importance, including Cryptosporidium spp. Therefore, this study aimed to perform the molecular characterization of Cryptosporidium spp. in fecal samples from capybaras inhabiting urban areas. We analyzed 401 fecal samples from capybaras in two municipalities of the state of Mato Grosso do Sul, Brazil. Fecal samples were purified using centrifugal sedimentation with ethyl acetate. They were then screened for Cryptosporidium spp. by malachite green negative staining and a nested PCR protocol targeting the 18S rRNA gene. Samples positive by microscopy or PCR were examined by PCR protocols targeting the actin, HSP-70, and GP60 genes. Amplicons from all PCR protocols were subjected to genetic sequencing. Microscopic screening and 18S rRNA gene-targeted PCR identified 0.25 % (1/401) and 0.5 % (2/401) of samples, respectively, as positive for Cryptosporidium spp. The genetic sequences of the 18S rRNA, HSP-70, actin, and GP60 genes showed genetic similarity to Cryptosporidium wrairi sequences of 99.07 %, 99.69 %, 99.57 %, and 91.51 %, respectively. Genetic sequencing and phylogenetic analyses identified the novel GP60 subtype family VIIbA13 of C. wrairi. In conclusion, we report in this study a low prevalence of the novel GP60 subtype family VIIbA13 of C. wrairi in free-living capybaras from urban areas of the state of Mato Grosso do Sul, Brazil. We propose that capybaras act as a novel host for C. wrairi.

水豚（Hydrochoerus hydrochaeris）是包括隐孢子虫属在内的几种对公共卫生具有重要意义的寄生虫的宿主，因此，本研究旨在对栖息在城市地区的水豚粪便样本中的隐孢子虫属进行分子鉴定。我们分析了巴西南马托格罗索州两个城市的 401 份毛冠鬣蜥粪便样本。粪便样本用乙酸乙酯离心沉淀法纯化。然后通过孔雀石绿阴性染色法和针对 18S rRNA 基因的巢式 PCR 方案筛查隐孢子虫属。对显微镜或 PCR 检测呈阳性的样本，采用针对肌动蛋白、HSP-70 和 GP60 基因的 PCR 方案进行检测。对所有 PCR 方案产生的扩增子进行基因测序。18S rRNA、HSP-70、肌动蛋白和 GP60 基因序列与隐孢子虫 wrairi 序列的遗传相似度分别为 99.07%、99.69%、99.57% 和 91.51%。基因测序和系统进化分析确定了 C. wrairi 的新型 GP60 亚型家族 VIIbA13。总之，我们在这项研究中报告说，在巴西南马托格罗索州城市地区自由生活的毛冠鼠中，C. wrairi 的新型 GP60 亚型家族 VIIbA13 的流行率很低。我们认为，水豚是 C. wrairi 的新型宿主。

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引用次数: 0

Seroprevalence of Toxoplasma gondii in domestic dogs from Lima City in Peru 秘鲁利马市家犬的弓形虫血清流行率

IF 1.4 Q3 PARASITOLOGY

Veterinary parasitology, regional studies and reports

Pub Date : 2024-11-05 DOI: 10.1016/j.vprsr.2024.101153

Juan Jimenez-Chunga , Frank Sullca-Sulca , Julia Castro-Hidalgo , Maritza Calderón-Sánchez , Luis A. Gomez-Puerta

The protozoan Toxoplasma gondii, which can infect a wide range of warm-blooded animal hosts, including humans, causes the zoonosis toxoplasmosis. This parasite affects dogs, and infections may lead to neuromuscular problems in them. Likewise, dogs can act as sentinels for toxoplasmosis, providing valuable information on the prevalence of the parasite in a given area. Therefore, the aim of the present study was to determine the seroprevalence of T. gondii in dogs from Lima City in Peru. A total of 120 sera from domestic dogs were used to detect IgG antibodies using the modified agglutination test (MAT). Forty dogs tested positive for the MAT, indicating a seroprevalence of 33.3 % (CI_95% 24.9–41.8 %). Only the variable sex demonstrated a statistical association with exposure to T. gondii in dogs, with males exhibiting odds of 2.40 (CI_95% 1.10–5.37) compared to females. Since dogs are the main human pet, they could act as sentinels to estimate the situation of toxoplasmosis in humans. Our findings highlight the need to continue epidemiological surveillance of T. gondii in canine populations in various localities of Peru.

弓形虫（Toxoplasma gondii）这种原生动物可感染包括人类在内的多种温血动物宿主，导致人畜共患病弓形虫病。这种寄生虫会影响狗，感染后可能会导致狗的神经肌肉问题。同样，狗也可以作为弓形虫病的哨兵，为特定地区的寄生虫流行情况提供有价值的信息。因此，本研究旨在确定秘鲁利马市狗的弓形虫血清流行率。研究人员使用改良凝集试验（MAT）检测了 120 份家犬血清中的 IgG 抗体。40 只犬的 MAT 检测结果呈阳性，表明血清流行率为 33.3%（CI95% 24.9-41.8%）。只有性别变量与狗感染淋病的几率有统计学关联，雄性狗感染淋病的几率为 2.40（CI95% 为 1.10-5.37），而雌性狗感染淋病的几率为 2.40（CI95% 为 1.10-5.37）。由于狗是人类的主要宠物，因此它们可以作为估计人类弓形虫感染情况的哨兵。我们的研究结果突出表明，有必要继续对秘鲁各地犬类群体中的弓形虫进行流行病学监测。

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引用次数: 0

A higher infection rate of Toxoplasma gondii in soft ticks infesting domestic hens: A novel report from Pakistan 家养母鸡感染的软蜱中弓形虫感染率较高：巴基斯坦的一份新报告

IF 1.4 Q3 PARASITOLOGY

Veterinary parasitology, regional studies and reports

Pub Date : 2024-11-04 DOI: 10.1016/j.vprsr.2024.101147

Bisma Khan , Sidra Batool , Sadia Shahnawaz , Shakir Ullah , Muhammad Naeem , Umme Habiba , Shaheen Akhter , Adil Khan , Furhan Iqbal

Ticks are the second most important hematophagous ectoparasites after mosquitoes and serve as vectors for various pathogens, transmitting them to wild and domestic animals, as well as humans. Argas persicus are the soft ticks that are known to parasitize domestic poultry. Hard ticks are known to be the reservoir of Toxoplasma (T.) gondii but limited such information is available for soft ticks. This study reports the molecular prevalence and phylogenetic analysis of T. gondii infecting Argas (A.) persicus ticks (N = 70), collected from four domestic poultry breeds in the Kurram District, Khyber Pakhtunkhwa, Pakistan, between June and August 2023. The results showed that 26 out of 70 (37 %) A. persicus samples tested positive for the ITS-1 gene of T. gondii. These findings were confirmed by the DNA sequencing and BLAST analysis of amplified amplicons. Phylogenetic analysis showed that Pakistani isolates were genetically diverse and clustered with isolates that were reported from birds and mammals from Pakistan, Tunisia, Malaysia, Brazil and Iraq.

Risk factor analysis indicated that the prevalence of T. gondii was not associated with any specific poultry breed, sampling period, or the body temperature of the fowl hosts. Similarly parasite prevalence was not found associated with tick sex or their developmental stage but parasite infection rate varied with the feeding status of the ticks; highest T. gondii infection rate was observed in fully fed Argas persicus. In conclusion, this is the first report from Pakistan highlighting a high prevalence of T. gondii in A. persicus infesting domestic poultry suggesting a potential zoonotic risk to humans through the consumption of infected poultry. This data is confirming that in addition to oral ingestion of oocysts, T. gondii can be mechanically transmitted through soft ticks.

蜱虫是仅次于蚊子的第二大噬血性体外寄生虫，是各种病原体的传播媒介，可将病原体传播给野生和家养动物以及人类。软蜱（Argas persicus）是已知寄生于家禽的软蜱。众所周知，硬蜱是弓形虫（T. gondii）的贮库，但关于软蜱的此类信息却很有限。本研究报告了 2023 年 6 月至 8 月期间从巴基斯坦开伯尔-普赫图赫瓦省库拉姆地区的四个家禽品种中收集的 Argas (A.) persicus 蜱（N = 70）感染弓形虫的分子流行率和系统发育分析。结果显示，在 70 个 A. persicus 样本中，有 26 个（37%）对刚地氏蜱的 ITS-1 基因检测呈阳性。对扩增的扩增子进行 DNA 测序和 BLAST 分析证实了这些结果。系统发育分析表明，巴基斯坦的分离株具有遗传多样性，并与巴基斯坦、突尼斯、马来西亚、巴西和伊拉克的鸟类和哺乳动物中报告的分离株聚集在一起。风险因素分析表明，淋病双球菌的流行与任何特定的家禽品种、采样时期或家禽宿主的体温无关。同样，寄生虫感染率也与蜱的性别或发育阶段无关，但寄生虫感染率随蜱的喂养状态而变化；在完全喂养的钝头蜱中观察到的淋病双球菌感染率最高。总之，这是巴基斯坦的第一份报告，其中突出强调了家禽感染的钝头蜱中的淋病双球菌感染率很高，这表明食用受感染的家禽可能会给人类带来人畜共患病风险。这些数据证实，除了口服卵囊外，淋病双球菌还可以通过软蜱进行机械传播。

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引用次数: 0

Description and phylogenetic position of an unusual genus and species of allocreadiid trematode from a characid freshwater fish in South America 南美洲淡水鱼中一种不寻常的拨雷虫属和种的描述和系统发育位置

IF 1.4 Q3 PARASITOLOGY

Veterinary parasitology, regional studies and reports

Pub Date : 2024-11-02 DOI: 10.1016/j.vprsr.2024.101150

Martin Miguel Montes , Nathalia Arredondo , Yasmin Croci , Jorge Barneche , Yamila Reshaid , Marina Ibañez Shimabukuro , Gerardo Pérez-Ponce de Leon

The worldwide distributed family Allocreadiidae Looss, 1902 is predominantly parasitic in freshwater fish and occasionally in amphibians and reptiles. It contains 15 genera, of which only Allocreadium, Creptotrema, Wallinia and Creptotrematina have been reported in Argentina. The records of Allocreadium species still require further verification. The discovery of an allocreadiid digenean parasitizing Pseudocorynopoma doriae led us to erect a new genus for which the name Martorellia n. gen is proposed. It is characterized by poorly developed ventrolateral muscular lobes and a transversely elongated ovary, with the most characteristic feature being the presence of vitelline follicles in two fields (one anterior at level of ventral sucker and one posterior to the testis), which are not confluent in the middle. The phylogenetic tree reconstructed with 28S rDNA sequences placed the new genus as the sister taxa of Creptotrematina. Although both genera are separated by a small genetic distance, it is comparable with those separating other allocreadiid genera. The discovery of Martorellia liciae gen et sp. nov. provides further evidence of the great diversity of Allocreadiidae in South America. The analysis of new samples from different South American hosts with an integrative taxonomic approach as the one used here allows a better understanding of the evolutionary history and biogeography of allocreadiids in the Americas.

分布于世界各地的 Allocreadiidae Looss（1902 年）科主要寄生于淡水鱼类，偶尔也寄生于两栖类和爬行类。该科包含 15 个属，其中只有 Allocreadium、Creptotrema、Wallinia 和 Creptotrematina 在阿根廷有报道。关于 Allocreadium 种类的记录仍需进一步核实。我们发现了一种寄生在 Pseudocorynopoma doriae 上的 allocreadiid digenean，并将其命名为 Martorellia n. gen。它的特点是腹侧肌叶发育不良，卵巢横向拉长，最大的特征是卵黄泡分布在两个区域（一个在腹吸盘前方，一个在睾丸后方），中间不汇合。利用 28S rDNA 序列重建的系统发生树将该新属列为 Creptotrematina 的姊妹类群。虽然这两个属之间的遗传距离较小，但与其他 allocreadiid 属之间的遗传距离相当。Martorellia liciae gen et sp. nov.的发现进一步证明了南美洲 Allocreadiidae 的多样性。采用综合分类方法分析来自不同南美寄主的新样本，可以更好地了解美洲allocreadiidae的进化史和生物地理学。

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引用次数: 0

Withdrawal notice to: ‘First report of Toxocara vitulorum infection in a dairy calf in Tennessee’ [veterinary parasitology regional studies and reports 56 (2024) 101128] 撤销通知：田纳西州首例奶牛小牛感染Toxocara vitulorum的报告" [veterinary parasitology regional studies and reports 56 (2024) 101128]。

IF 1.4 Q3 PARASITOLOGY

Veterinary parasitology, regional studies and reports

Pub Date : 2024-11-01 DOI: 10.1016/j.vprsr.2024.101157

Heidi Wyrosdick, Alexis Johnson, Kathleen Riese, Debra Miller, Richard Gerhold

引用次数: 0