International Journal for Parasitology-Parasites and Wildlife最新文献

{"title":"Retrospective analysis of laboratory diagnostic data to assess the prevalence and seasonal variation of Ehrlichia ruminantium in commercial farms of Lephalale Municipality, Limpopo, South Africa","authors":"Emmanuel Seakamela ,&nbsp;Itumeleng Matle ,&nbsp;Nandipha Ndudane ,&nbsp;Relebohile Lepheana ,&nbsp;Sikhumbuzo Mbizeni","doi":"10.1016/j.ijppaw.2024.100959","DOIUrl":"https://doi.org/10.1016/j.ijppaw.2024.100959","url":null,"abstract":"<div><p>Heartwater is an economically important disease of livestock and some wild ruminants in Southern Africa. The study used retrospective laboratory data from Lephalale Veterinary Laboratory, Limpopo to establish the prevalence and seasonal occurrence of heartwater in commercial farms of Lephalale Municipality between 2010 and 2022. A total of 472 brain samples from livestock (cattle, goats, sheep) and game carcasses brought to the laboratory for postmortem examination were subjected to heartwater testing using Giemsa staining technique. The overall prevalence of heartwater in Lephalale Municipality was 34.1% (95% CI = 29.9–38.6, <em>p</em> &lt; 0.001). During the years under investigation, there was a significant (<em>p</em> &lt; 0.001) variation, with the highest and lowest prevalence in 2022 (72.2%) and 2019 (6.3%), respectively. The prevalence of heartwater was high in springbok (57.1%), sheep (49.3%), cattle (36.6%) and goats (32.2%). Heartwater was detected throughout the year with autumn having the highest (40.6%) frequency followed by summer (40.3%), spring (30.5%) and winter (25.5%). This study is the first to establish the prevalence and seasonality of heartwater in Lephalale Municipality which will serve as a baseline for prevention and control strategies as well as future epidemiological studies. Official surveillance programmes, more research on the distribution and genotypes of <em>E. ruminantium</em> in the area need to be undertaken for better understanding of the disease in the area.</p></div>","PeriodicalId":54278,"journal":{"name":"International Journal for Parasitology-Parasites and Wildlife","volume":"24 ","pages":"Article 100959"},"PeriodicalIF":2.0,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2213224424000555/pdfft?md5=13b39dc3fe15c0fd143fd637a69727cd&pid=1-s2.0-S2213224424000555-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141481567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bartonella, Blechomonas and Trypanosoma in fleas from the long-tailed ground squirrel (Spermophilus undulatus) in northwestern China","authors":"Xiaoshuang Han ,&nbsp;Shanshan Zhao ,&nbsp;Ziheng Liu ,&nbsp;Yujiang Zhang ,&nbsp;Guoyu Zhao ,&nbsp;Chunju Zhang ,&nbsp;Lijuan Tang ,&nbsp;Lin Cui ,&nbsp;Yuanzhi Wang","doi":"10.1016/j.ijppaw.2024.100958","DOIUrl":"https://doi.org/10.1016/j.ijppaw.2024.100958","url":null,"abstract":"<div><p>Fleas are known to be vectors for a variety of pathogens in veterinary medicine. However, no information is available on the presence of <em>Bartonella</em> and Trypanosomatidae in fleas of the long-tailed ground squirrel (LTGR, <em>Spermophilus undulatus</em>). The present study shows detection of these pathogens in LTGR fleas. During 2022–2023, a total of 396 fleas were collected from 91 LTGRs in 4 alpine regions of Xinjiang Uygur Autonomous Region (northwestern China) and grouped into 54 flea pools. Flea species were identified according to morphological characteristics and molecular data. In addition, all flea samples were analyzed for <em>Bartonella</em> with amplification and sequencing of a 380-bp part of the <em>gltA</em> gene and Trypanosomatidae with targeting the <em>18S rRNA</em> (850-bp) and <em>gGAPDH</em> (820-bp) genes. The flea species included <em>Frontopsylla elatoides</em> <em>elatoides</em> (203), <em>Neopsylla mana</em> (49), and <em>Citellophilus tesquorum dzetysuensis</em> (144). Of 54 flea pools, seven (12.96%) tested positive for <em>Bartonella</em>, and three (5.56%) were positive for Trypanosomatidae. Based on BLASTn and phylogenetic analyses, i) <em>Bartonella washoensis</em> in <em>F. elatoides</em> <em>elatoides</em> and <em>C. tesquorum dzetysuensis</em>, and <em>Bartonella rochalimae</em> in <em>F. elatoides</em> <em>elatoides</em> were identified. Interestingly, a new haplotype within the species <em>Ba. washoensis</em> was discovered in <em>C. tesquorum dzetysuensis</em>; and ii) <em>Blechomonas luni</em> was confirmed in <em>C. tesquorum dzetysuensis</em> and <em>Trypanosoma otospermophili</em> in <em>F. elatoides</em> <em>elatoides</em>. Two <em>Bartonella</em> species and two Trypanosomatidae members were discovered for the first time in fleas from LTGRs. This study broadens our understanding of the geographic distribution and potential vectors for <em>Bartonella</em> and Trypanosomatidae.</p></div>","PeriodicalId":54278,"journal":{"name":"International Journal for Parasitology-Parasites and Wildlife","volume":"24 ","pages":"Article 100958"},"PeriodicalIF":2.0,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2213224424000543/pdfft?md5=92ebce397368083f3c7b3e2cbb28739d&pid=1-s2.0-S2213224424000543-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141481633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Epidemiological investigation of Trichomonas gallinae in beijing, China","authors":"Shengfan Jing ,&nbsp;Yi Li ,&nbsp;Qiaoqiao Li ,&nbsp;Yanyi Huang ,&nbsp;Shuyi Han ,&nbsp;Qingxun Zhang ,&nbsp;Jinghui Fan ,&nbsp;Hongxuan He","doi":"10.1016/j.ijppaw.2024.100957","DOIUrl":"https://doi.org/10.1016/j.ijppaw.2024.100957","url":null,"abstract":"<div><p><em>Trichomonas gallinae</em> is a globally distributed protozoan parasite that causes avian trichomoniasis, leading to significant morbidity and mortality in birds. The present study aims to investigate the prevalence, genetic diversity, and phylogenetic relationship of <em>T. gallinae</em> in various bird species in Beijing. A total of 413 oropharyngeal swab samples were collected from domestic pigeons, wild pigeons, and other bird species. The overall prevalence of <em>T. gallinae</em> infection was 32.0% (132/413). The infection was detected in domestic pigeons, wild pigeons, and red-necked turtledoves, but not in other wild birds. Molecular analysis identified two predominant genotypes, A and B, with genotype A found in wild pigeons and genotype B found in domestic pigeons. The present study provides valuable insights on the prevalence and genetic diversity of <em>T. gallinae</em> in Beijing. This can be useful for understanding its pathogen distribution and host range, and the development of strategies for the prevention and control of avian trichomoniasis.</p></div>","PeriodicalId":54278,"journal":{"name":"International Journal for Parasitology-Parasites and Wildlife","volume":"24 ","pages":"Article 100957"},"PeriodicalIF":2.0,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2213224424000531/pdfft?md5=7a357a7f39eddef42341ff172aee82b7&pid=1-s2.0-S2213224424000531-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141481667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Successful treatment of Trypanoxyuris sp. infection in naturally infected southern brown-howlers (Alouatta guariba clamitans)","authors":"Felipe Rieth de Lima ,&nbsp;Luísa Barreto Rippel ,&nbsp;Sandy Gabrielly Radünz Machado ,&nbsp;Aury Nunes de Moraes ,&nbsp;Bárbara Corbellini Rovaris ,&nbsp;Anderson Barbosa de Moura ,&nbsp;Andreas Lazaros Chryssafidis","doi":"10.1016/j.ijppaw.2024.100956","DOIUrl":"https://doi.org/10.1016/j.ijppaw.2024.100956","url":null,"abstract":"<div><p>Southern brown-howler monkeys (<em>Alouatta guariba clamitans</em>) may harbor <em>Trypanoxyuris</em> sp., a pinworm parasite with documented fatal consequences in this species. Despite this risk, effective treatment protocols remain unclear. Therefore, the present study aimed to evaluate the efficacy of two anthelmintic protocols against natural infections in two brown-howler monkeys received at the Wild Animal Care and Rehabilitation Sector (SARAS-CAV-UDESC). The protocols utilized pyrantel pamoate &amp; praziquantel (600.0 mg, PO, single dose) and albendazole (20.0 mg, PO, daily for 5 days). Fecal egg counts were carried out daily at the Laboratory of Parasitology and Parasitic Diseases (LAPAR-CAV-UDESC) before and after drug administration. Both treatments successfully eliminated <em>Trypanoxyuris</em> sp. infections. The animal treated with pyrantel pamoate &amp; praziquantel achieved egg clearance by day 6 (144 h), demonstrating effectiveness with a single administration. Albendazole cleared the infection within 2 days of treatment, indicating its potential as a fast-acting treatment. No adverse effect were observed in the treated monkeys. These findings contribute to the development of evidence-based treatment protocols for <em>Trypanoxyuris</em> sp. in primates, enhancing animal health and welfare of captive and wild populations.</p></div>","PeriodicalId":54278,"journal":{"name":"International Journal for Parasitology-Parasites and Wildlife","volume":"24 ","pages":"Article 100956"},"PeriodicalIF":1.8,"publicationDate":"2024-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S221322442400052X/pdfft?md5=23a6e9185484278ba2dc537e60e37e89&pid=1-s2.0-S221322442400052X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141333300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A retrospective epidemiological study of sarcoptic mange in koalas (Phascolarctos cinereus) using wildlife carer admission records","authors":"Ellyssia T. Young ,&nbsp;David Phalen ,&nbsp;Aaron C. Greenville ,&nbsp;Kylie Donkers ,&nbsp;Scott Carver","doi":"10.1016/j.ijppaw.2024.100955","DOIUrl":"10.1016/j.ijppaw.2024.100955","url":null,"abstract":"<div><p>Outbreaks of sarcoptic mange are sporadically reported in koala populations across Australia, but disease characteristics (e.g., distribution across the body) remain poorly understood. In an area of Northern Victoria regular cases coming into care suggest mange may have become enzootic, and here we characterise those koala mange admission records. In 18% (n = 10) of mange affected koala reports that had a recorded outcome (n = 55), the animals died before the carers could locate them, and of the remaining 45 koalas that were alive upon carer arrival, 80% (n = 36) had to be euthanised due to severe mange. The number of admissions varied among years (highest observed in 2019), and over 60% of affected koala admissions were male. Male admissions peaked in austral spring and again in late austral summer-autumn (mating and birthing seasons), with female admissions only exhibiting the latter peak (birthing season). Fissures of the epidermis of the front paws occurred in 100% of admitted koalas, with 70% also showing these signs elsewhere on ventral surfaces or limbs. Only male koalas had signs of mange on the chest and face, and only female koalas had signs of mange on their back. Collectively, this study suggests sarcoptic mange can be a severe disease in koalas, and that male koalas may play an important role in seasonal transmission dynamics. We discuss how these findings may help inform intervention strategies.</p></div>","PeriodicalId":54278,"journal":{"name":"International Journal for Parasitology-Parasites and Wildlife","volume":"24 ","pages":"Article 100955"},"PeriodicalIF":1.8,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2213224424000518/pdfft?md5=a604b4eeaafdc8ddb773b356a64442c9&pid=1-s2.0-S2213224424000518-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141395642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dirofilaria immitis and Dirofilaria striata (Spirurida: Onchocercidae) detected in wild carnivores from Texas, United States","authors":"Rafael A.N. Ramos ,&nbsp;Hassan Hakimi ,&nbsp;Jordan Salomon ,&nbsp;Rachel E. Busselman ,&nbsp;Rachel Curtis-Robles ,&nbsp;Carolyn L. Hodo ,&nbsp;Sarah A. Hamer ,&nbsp;Guilherme G. Verocai","doi":"10.1016/j.ijppaw.2024.100954","DOIUrl":"10.1016/j.ijppaw.2024.100954","url":null,"abstract":"<div><p><em>Dirofilaria immitis</em> and <em>Dirofilaria striata</em> (Spirurida: Onchocercidae) are epidemiologically important filarial nematodes detected in wild carnivores sympatric to domestic animals and humans. In this study we surveyed for <em>Dirofilaria</em> species among previous studies archived blood samples (n = 202) of wild carnivores sourced across Texas between the years of 2014–2016 and 2020 to 2023. In total, 117 coyotes (<em>Canis latrans</em>), 67 raccoons (<em>Procyon lotor</em>), 12 gray foxes (<em>Urocyon cinereoargenteus</em>), five bobcats (<em>Lynx rufus</em>), and one striped skunk (<em>Mephitis mephitis</em>) were tested through the amplification of the partial cytochrome oxidase c subunit 1 (<em>COI</em>) gene followed by sequencing. <em>Dirofilaria immitis</em> was detected in 11.39% (95% CI = 7.71–16.51) of the samples (21 coyotes and two raccoons), while <em>D. striata</em> was detected in a single bobcat. <em>Dirofilaria immitis</em> sequences had 99.85%–100% (99.92% ± 0.08) similarity with other <em>D. immitis</em> sequences in GenBank. The sequence of <em>D. striata</em> from the bobcat was 100% similar to the single <em>COI</em> sequence available in GenBank. Data from this study reinforce the role of coyotes as a wild reservoir for <em>D. immitis</em> and suggest that raccoons may also play a role in the epidemiology of this parasite. This study additionally provides molecular data on <em>D. striata</em>, an understudied filarioid of felids.</p></div>","PeriodicalId":54278,"journal":{"name":"International Journal for Parasitology-Parasites and Wildlife","volume":"24 ","pages":"Article 100954"},"PeriodicalIF":2.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2213224424000506/pdfft?md5=d473871778a888b18273e10ea118efe0&pid=1-s2.0-S2213224424000506-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141411031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The first finding of Dictyocaulus cervi and Dictyocaulus skrjabini (Nematoda) in feral fallow deer (Dama dama) in Australia","authors":"Keira Brown ,&nbsp;David J. Jenkins ,&nbsp;Alexander W. Gofton ,&nbsp;Ina Smith ,&nbsp;Nidhish Francis ,&nbsp;Shokoofeh Shamsi ,&nbsp;Diane P. Barton","doi":"10.1016/j.ijppaw.2024.100953","DOIUrl":"https://doi.org/10.1016/j.ijppaw.2024.100953","url":null,"abstract":"<div><p>Feral deer are widespread throughout Australia with the capacity to impact livestock production <em>via</em> transmission of parasites. Samples of <em>Dama dama</em> (fallow deer), <em>Rusa unicolor</em> (sambar deer), <em>Cervus elaphus</em> (red deer) and an unidentified deer were sourced from various locations in south-eastern Australia for examination for parasites. Adult nematodes were collected from the lungs of all deer species across four separate geographical locations. The nematodes were identified as species of <em>Dictyocaulus</em> through both morphological and molecular means. Species identification based on morphological features was difficult, with many measurements from described species overlapping. Molecular analyses targeting three markers, namely 18S rRNA, ITS2, and cox1 revealed the presence of two distinct species: <em>Dictyocaulus cervi</em> and <em>Dictyocaulus skrjabini</em>. These are the first genetically confirmed reports of species of <em>Dictyocaulus</em> in feral deer in Australia, and although cross-transmission of species of <em>Dictyocaulus</em> with livestock has not yet been reported, it cannot be completely discounted without further research.</p></div>","PeriodicalId":54278,"journal":{"name":"International Journal for Parasitology-Parasites and Wildlife","volume":"24 ","pages":"Article 100953"},"PeriodicalIF":1.8,"publicationDate":"2024-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S221322442400049X/pdfft?md5=01b724df59572e77b3c66e5d10f1ff15&pid=1-s2.0-S221322442400049X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141302520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Toxoplasma gondii and Neospora caninum in invasive wild boars (Sus scrofa) and hunting dogs from Brazil","authors":"Patricia Parreira Perin ,&nbsp;Carmen Andrea Arias-Pacheco ,&nbsp;Lívia de Oliveira Andrade ,&nbsp;Jonathan Silvestre Gomes ,&nbsp;Adrian Felipe de Moraes Ferreira ,&nbsp;Rafael Oliveira Pavaneli ,&nbsp;Fabiana Alves Loureiro ,&nbsp;Ana Luíza Franco ,&nbsp;Wilson Junior Oliveira ,&nbsp;Talita Oliveira Mendonça ,&nbsp;Natália de Oliveira Zolla ,&nbsp;Mateus de Souza Ribeiro Mioni ,&nbsp;Rosangela Zacarias Machado ,&nbsp;Luiz Daniel de Barros ,&nbsp;João Luis Garcia ,&nbsp;Rafaela Maria Boson Jurkevicz ,&nbsp;Ana Carolina Cavallieri ,&nbsp;Estevam G. Lux Hoppe","doi":"10.1016/j.ijppaw.2024.100951","DOIUrl":"https://doi.org/10.1016/j.ijppaw.2024.100951","url":null,"abstract":"<div><p>The wild boar, an impactful invasive species in Brazil, is subject to population control activities, which often include the use of hunting dogs. Hunters commonly consume wild boar meat, which is also used to feed their dogs, posing a risk of <em>Toxoplasma gondii</em> infection for humans and both <em>T. gondii</em> and <em>Neospora caninum</em> for dogs. The study aimed to investigate the prevalence of infection in wild boars (n = 127) and hunting dogs (n = 73) from São Paulo, Rio Grande do Sul, and Paraná states. We employed histopathological, serological (indirect fluorescent antibody test), and molecular techniques (endpoint polymerase chain reaction). Histopathology slides of wild boar tissue (central nervous system, heart, skeletal muscle, liver, spleen, kidney, gastrointestinal tract, pancreas, lymph nodes, and thyroid) sections revealed no <em>T. gondii</em> or <em>N. caninum</em> cysts (0/47). Antibodies anti-<em>T. gondii</em> were detected in 35/108 (32.4%) and anti-<em>N. caninum</em> in 45/108 (41.7%) wild boars. Only 2/18 (11.1%) wild boar tissue homogenate samples tested positive for <em>T. gondii</em> on endpoint PCR. Hunting dogs showed antibodies against <em>T. gondii</em> in 62/73 (85%) and against <em>N. caninum</em> in 31/73 (42%). The presence of antibodies against <em>T. gondii</em> and <em>N. caninum</em> in wild boars and hunting dogs, along with <em>T. gondii</em> DNA detection in wild boars, indicates the circulation of these parasites. Educating hunters on preventing these foodborne diseases, including zoonotic risks, is crucial.</p></div>","PeriodicalId":54278,"journal":{"name":"International Journal for Parasitology-Parasites and Wildlife","volume":"24 ","pages":"Article 100951"},"PeriodicalIF":1.8,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2213224424000476/pdfft?md5=edb3148b5381ca28d75ecb595468c991&pid=1-s2.0-S2213224424000476-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141303243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Patterns of gastrointestinal parasite infections in bighorn sheep, Ovis canadensis, with respect to host sex and seasonality","authors":"Samridhi Rijal ,&nbsp;Peter Neuhaus ,&nbsp;Jack Thorley ,&nbsp;Nigel Caulkett ,&nbsp;Susan Kutz ,&nbsp;Kathreen E. Ruckstuhl","doi":"10.1016/j.ijppaw.2024.100950","DOIUrl":"https://doi.org/10.1016/j.ijppaw.2024.100950","url":null,"abstract":"<div><p>Males and females in sexually dimorphic species show differences in their physiology and behaviour due to differences in energetic investment into reproduction and soma. This means that the two sexes may show different patterns of parasitism at different times of the year. In this study, we evaluate the abundance of fecal eggs and larvae of 5 parasite types (Strongyles, <em>Nematodirus</em> spp., <em>Marshallagia marshalli</em>., <em>Protostrongylus</em> spp. lungworms, and <em>Eimeria</em> spp.) in relation to season and sex in Rocky Mountain bighorn sheep (<em>Ovis canadensis</em>). We use fecal egg counts (FEC) as a proxy for infection intensity. Parasite FECs differed between male and female bighorn sheep and varied with season. We found pronounced fluctuations in fecal egg counts of various parasite species in males and females across different seasons and reproductive stages. Strongyle counts were significantly higher during late gestation and lactation/summer, and particularly pronounced in males. <em>Nematodirus</em> counts were highest during late gestation in females and during the rut in males. <em>Marshallagia</em> counts peaked during late gestation in females and during the rut in males. <em>Protostrongylus</em> spp. lungworm counts were highest during late gestation in females and in males during lactation/summer and the rut. <em>Eimeria</em> oocyst counts varied across seasons, with higher counts in males during the rut and in females during winter and late gestation. Additionally, significant differences in Strongyle counts were observed between coursing and tending rams, with tending rams exhibiting higher counts. We discuss why the sexes might differ in FECs and suggest that differences between FECs of the parasites across seasons may be due to different life cycles and cold tolerance of the parasites themselves.</p></div>","PeriodicalId":54278,"journal":{"name":"International Journal for Parasitology-Parasites and Wildlife","volume":"24 ","pages":"Article 100950"},"PeriodicalIF":1.8,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2213224424000464/pdfft?md5=3717e41fdf9fbdcff93331b5af8d3e3b&pid=1-s2.0-S2213224424000464-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141308504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Remarks on Eimeria spp. (Apicomplexa: Eimeriidae) from Kobus spp. (Bovidae: Reduncini), with supplementary morphological data of Eimeria congolensis Ricci-Bitti et al., 1973 from a new host subspecies, the common waterbuck Kobus ellipsiprymnus ellipsiprymnus (Ogilbyi, 1833)","authors":"Ana Maria Duque de Araujo Munhoz ,&nbsp;Ema Albuquerque Fernandes ,&nbsp;João David Molarinho Marques ,&nbsp;Bruno Pereira Berto","doi":"10.1016/j.ijppaw.2024.100952","DOIUrl":"https://doi.org/10.1016/j.ijppaw.2024.100952","url":null,"abstract":"<div><p>Reduncin bovids of <em>Kobus</em> spp. (Bovidae: Reduncini) are natively distributed in sub-Saharan Africa, although some populations have been introduced into parks and zoos around the world. The majority of the species has declining populations, being categorized as threatened by the International Union for Conservation of Nature and Natural Resources; therefore, protective measures for the conservation of <em>Kobus</em> spp. are necessary, including the study of their parasites, such as the eimeriid coccidians (Apicomplexa: Eimeriidae). In this context, the aim of the current study was to brings together the taxonomic data from the descriptions and reports of <em>Eimeria</em> spp. from reduncin bovids, based on the detailed morphological identification of <em>Eimeria congolensis</em> Ricci-Bitti, Pampiglione &amp; Kabala, 1973 from a new host subspecies, the common waterbuck <em>Kobus ellipsiprymnus ellipsiprymnus</em> (Ogilbyi, 1833), in a safari park of Portugal. Five <em>Eimeria</em> spp. are recorded from reduncin bovids, in addition to six more reports identified generically as <em>Eimeria</em> sp., which were compared and taxonomically rearranged. The oocysts identified as <em>E. congolensis</em> in the current study were compatible with the original description and were supplemented for some taxonomic characters not originally included, such as: Stieda body flattened to nipplelike, sub-Stieda body rounded to trapezoidal, sporocyst residuum granular and membrane-bound, in addition to greater details of the micropyle, among others. Finally, the current study highlights the importance of studying the coccidians of reduncin bovids for the conservation of <em>Kobus</em> spp. due to the possibility of these <em>Eimeria</em> spp. are extra-intestinal parasites, which can potentially cause severe coccidiosis associated with increased morbidity and mortality in certain threatened populations of <em>Kobus</em> spp.</p></div>","PeriodicalId":54278,"journal":{"name":"International Journal for Parasitology-Parasites and Wildlife","volume":"24 ","pages":"Article 100952"},"PeriodicalIF":1.8,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2213224424000488/pdfft?md5=0198fce8bd8bbadf74820f1c124b7ebd&pid=1-s2.0-S2213224424000488-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141289877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}