Veterinary parasitology, regional studies and reports最新文献

{"title":"First report of Theileria orientalis Ikeda genotype associated with disease in cattle, Georgia, USA","authors":"Grazieli Maboni ,&nbsp;Mackenzie Long ,&nbsp;Michael J. Yabsley ,&nbsp;Amy McKinney ,&nbsp;Ingrid Fernandez ,&nbsp;Gustavo Garcia ,&nbsp;Brianna Cuellar ,&nbsp;Nicholas Rinke ,&nbsp;Cassan Pulaski ,&nbsp;Kevin Lahmers ,&nbsp;Katie Metcalf ,&nbsp;Dustin Weaver ,&nbsp;Janemarie Hennebelle ,&nbsp;Binu T. Velayudhan","doi":"10.1016/j.vprsr.2025.101279","DOIUrl":"10.1016/j.vprsr.2025.101279","url":null,"abstract":"<div><div><em>Theileria orientalis</em> genotype Ikeda is a tickborne parasite that infects red and white blood cells and causes bovine infectious anemia. The primary tick vector for <em>T. orientalis</em> Ikeda is the longhorned tick (<em>Haemaphysalis longicornis</em>). This tick was first detected in the United States in 2017 and in the state of Georgia in 2021, however, to date, no clinical cases of theileriosis in cattle have been reported in the state of Georgia.</div><div>A Highland calf was clinically diagnosed with anemia, marked lethargy, tachycardia, tachypnea, decreased rumen contraction rate, dry and flaking skin, and thin and rough hair coat with areas of alopecia. Blood smear evaluation revealed intraerythrocytic piroplasms. PCR and sequencing of the major piroplasm surface protein (MPSP) gene identified <em>T. orientalis</em> genotype Ikeda 2. Another Highland calf from the same farm also presented intraerythrocytic piroplasms in the blood smear and was positive for <em>T. orientalis</em>, but no clinical signs were observed. Clinical signs resolved with ceftiofur crystalline free acid 6.6 mg/kg and imidocarb dipropionate 3 mg/kg, subcutaneously; however, both animals were still positive for <em>T. orientalis</em> after 7 months of treatment.</div><div>This is the first clinical case of <em>Theileria orientalis</em> Ikeda genotype 2 diagnosed in Georgia, USA. This is the furthest south where this invasive pathogen has been identified, representing its fast and expanding range in the USA. The presence of <em>T. orientalis</em> Ikeda in Georgia and other states represents an emerging infectious disease issue with the potential for significant animal health and economic impact.</div></div>","PeriodicalId":23600,"journal":{"name":"Veterinary parasitology, regional studies and reports","volume":"62 ","pages":"Article 101279"},"PeriodicalIF":1.4,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chicken gastrointestinalhelminths parasites: Coprological prevalence, spatial distribution, and morph-anatomical species identification in South Gondar zone, north West Ethiopia","authors":"Seid Kassaw,&nbsp;Mekonen Baylie,&nbsp;Asnakew Mulaw,&nbsp;Abraham Ayele","doi":"10.1016/j.vprsr.2025.101275","DOIUrl":"10.1016/j.vprsr.2025.101275","url":null,"abstract":"<div><div>Gastrointestinal helminths, including cestodes and nematodes, represent significant health and economic challenges to the poultry industry due to their pathogenic impact on chickens. Despite the substantial risks they pose, limited research has focused on these parasitic infections. Therefore, a cross-sectional study was conducted from July 2023 to June 2024 in the South Gondar zone to determine the prevalence, distribution, and identify the parasitic gastrointestinal helminthes in chickens. A total of 418 chickens were randomly selected from study districts and subjected to faecal examinations (faecal flotation technique), while 21 chickens from positive cases were selected for post-mortem examination. Both egg morphology and adult parasite identification were employed to identify gastrointestinal helminth species. This study revealed that 289 (69.1 %) of chickens were infected by gastrointestinal helminth parasites. Of these, 141 (33.7 %) were cestodes, 110 (26.3 %) nematodes, and 38 (9 %) mixed infections respectively. The primary cestode species identified were <em>Raillietina tetragona</em> (15.7 %) and <em>Davainea proglottina</em> (10.5 %), and for nematodes, the predominant species were <em>Ascaridia galli</em> (20.8 %), <em>Heterakis gallinarum</em> (12.4 %), and <em>Capillaria annulata</em> (0.4 %). The significant associations were observed concerning age, breed, agroecology, district, and management practices (<em>P</em> &lt; 0.05). However, no significant associations were found between parasite prevalence and the chickens' sex (<em>P</em> &gt; 0.05). These findings highlight the high prevalence of helminth infections as a major challenge for chickens raised in extensive farming systems within the South Gondar zone, underscoring the imperative need for effective control strategies recommended.</div></div>","PeriodicalId":23600,"journal":{"name":"Veterinary parasitology, regional studies and reports","volume":"62 ","pages":"Article 101275"},"PeriodicalIF":1.4,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diversity of parasitic and non-parasitic fauna in Apis mellifera colonies: Implications for honeybee health and apiary management in two climatic zones of Burkina Faso, West Africa","authors":"Souhaïbou Sawadogo ,&nbsp;Oswald Gilbert Dingtoumda ,&nbsp;Hugues Roméo Bazié ,&nbsp;Valentin Zoungrana ,&nbsp;Yacouba Soro ,&nbsp;Franck Lirassé Gnané ,&nbsp;Modeste Florentin Bationo ,&nbsp;Zakaria Ilboudo","doi":"10.1016/j.vprsr.2025.101277","DOIUrl":"10.1016/j.vprsr.2025.101277","url":null,"abstract":"<div><div>The hive can harbour a variety of beneficial or harmful organisms alongside the honeybee. These pests act individually or collectively and contribute to declining bee populations worldwide. Here, we looked at the diversity of macro-organisms associated with bees in hives in Burkina Faso. The study took place in the Sudanian and Sudano-Sahelian climatic zones. The aim was to inventory and analyse their diversity in 238 hives from 48 apiaries. The results showed that in the Sudanian zone, 80.6 % of hives hosted other organisms in addition to bees, compared with 46.9 % in the Sudano-Sahelian (<em>P</em> &lt; 0.05). Thus, in the Sudanian zone, 22 animal species were encountered, compared with 23 in the Sudano-Sahelian. The Sudano-Sahelian zone was characterized by greater species diversity (Shannon H = 1.301 vs. 1.158) and a more balanced species distribution (Equitability J = 0.4149 vs. 0.3747) than the Sudanian zone. <em>Varroa destructor</em> and <em>Aethina tumida</em> were most abundant in the study area (63.5 % and 21.33 % respectively). We discussed possible or established interactions between these different organisms and their bee hosts. This study could pave the way for actions to improve the resilience of local bees in the face of current environmental and health challenges.</div></div>","PeriodicalId":23600,"journal":{"name":"Veterinary parasitology, regional studies and reports","volume":"61 ","pages":"Article 101277"},"PeriodicalIF":1.4,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143932140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phenotypic resistance to ivermectin in Hyalomma anatolicum populations from north-western state of Punjab, India","authors":"Jyoti,&nbsp;Manisha,&nbsp;Harkirat Singh,&nbsp;Nirbhay Kumar Singh","doi":"10.1016/j.vprsr.2025.101278","DOIUrl":"10.1016/j.vprsr.2025.101278","url":null,"abstract":"<div><div><em>Hyalomma anatolicum</em> is a multi-host ixodid tick species that significantly contributes to the spread of pathogens, posing economic and health challenges for livestock populations. This study assessed the acaricide resistance status to ivermectin in <em>H. anatolicum</em> field populations from north-western state of Punjab, India by larval immersion test. Dose-mortality response was analysed using probit transformation of percent mortality and logarithmically transformed drug concentrations, and lethal concentration (LC₅₀, LC₉₀ and LC₉₉) and resistance ratio values were determined. Bioassay results revealed resistance status against ivermectin in all studied field isolates with RR₅₀ values ranging from 8.87 to 95.22. The maximum value was recorded in MKS (RR₅₀ = 95.22), followed by FKA (RR₅₀ = 48.78) and minimum in BNN isolate (RR₅₀ = 8.87). The findings highlight a concerning trend of resistance development in field isolates of multi-host cattle tick from Punjab state and thereby emphasizing the need for resistance management strategies, including integrated tick management practices, rotational use of acaricides and adoption of alternative control measures.</div></div>","PeriodicalId":23600,"journal":{"name":"Veterinary parasitology, regional studies and reports","volume":"61 ","pages":"Article 101278"},"PeriodicalIF":1.4,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143941196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gastrointestinal parasites and molecular characterization of Eimeria spp. among imported small ruminants in the Sultanate of Oman","authors":"Elshafie I. Elshafie ,&nbsp;Khalid Al-Habsi ,&nbsp;Haytham Ali ,&nbsp;Yasmin ElTahir ,&nbsp;Kaadhia Al-Kharousi ,&nbsp;Abeer Al-Hamrashdi ,&nbsp;Mohamed Khojali ,&nbsp;Ali M. Al-Batrani ,&nbsp;Eugene H. Johnson","doi":"10.1016/j.vprsr.2025.101273","DOIUrl":"10.1016/j.vprsr.2025.101273","url":null,"abstract":"<div><div>The Omani market imports live sheep and goats from across the globe to meet the high human demand for fresh meat. However, this reliance on imports may increase the risk of introducing foreign pathogens despite the strict quarantine regulations. Therefore, we aimed to determine endoparasites among imported sheep and goats that may escape through the sole quarantine station in Muscat. For this purpose, 205 sheep and 47 goats' fecal samples were collected from animals imported from different countries at the Central Quarantine Station in Muscat between 2019 and 2020. The identification and quantification of parasites were revealed by parasitological and molecular techniques, and sequencing analyses were performed on the highly prevalent parasites. The fecal flotation test showed an overall prevalence of gastrointestinal parasites in sheep and goats at 73.17 % and 78.72 %, respectively. The most abundant enteric parasites were <em>Eimeria</em> spp. (65.08 %), strongyle nematodes (25.7 %), and mixed infections of both (19.1 %). In contrast, <em>Strongyloides</em> spp. (2.78 %), <em>Trichuris</em> spp. (2.38 %), and <em>Moniezia</em> spp. (0.40 %) were present to a lesser extent. The McMaster technique revealed an average of 15,325 oocysts and 646 eggs per gram of feces for <em>Eimeria</em> spp. and strongyle-type eggs, respectively. The sequence analyses of the infected sheep and goats showed high similarity with sequences of <em>Trichostrongylus</em> spp.<em>, Oesophagostomum columbianum, Haemonchus contortus,</em> and <em>Eimeria</em> spp. Rigorous control measures are essential at Omani quarantine stations to inhibit the entry of new parasites into the country and to mitigate the dissemination of various cross-border gastrointestinal parasites. This may pose a significant risk to public health and livestock productivity.</div></div>","PeriodicalId":23600,"journal":{"name":"Veterinary parasitology, regional studies and reports","volume":"61 ","pages":"Article 101273"},"PeriodicalIF":1.4,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seroprevalence of Trichinella spp. in hunting dogs from southern Italy","authors":"Alessia Ricci ,&nbsp;Marcos Antônio Bezerra-Santos ,&nbsp;Alessandra Ludovisi ,&nbsp;Irene Tartarelli ,&nbsp;Gianluca Marucci ,&nbsp;Adriano Casulli ,&nbsp;Giovanni Sgroi ,&nbsp;Vincenzo Veneziano ,&nbsp;Riccardo Paolo Lia ,&nbsp;Jairo Alfonso Mendoza-Roldan ,&nbsp;Domenico Otranto","doi":"10.1016/j.vprsr.2025.101276","DOIUrl":"10.1016/j.vprsr.2025.101276","url":null,"abstract":"<div><div>Wildlife plays a crucial role in maintaining the sylvatic cycle of <em>Trichinella</em> spp., representing an important source of infection for humans through the consumption of infected meat. Due to their scavenging behaviour and close interaction with wildlife, hunting dogs can be exposed to <em>Trichinella</em> spp. by ingesting muscle tissue containing infective larvae. In this study, we assessed the seroprevalence of <em>Trichinella</em> spp. in hunting dogs from southern Italy. Serum samples (<em>n</em> = 270) were collected from dogs across different areas of the Basilicata region and screened for anti-<em>Trichinella</em> IgG antibodies by an enzyme-linked immunosorbent assay (ELISA), followed by a confirmatory western blot (WB). Anti-<em>Trichinella</em> IgG antibodies were detected in 34.8 % (<em>n</em> = 94/270; 95 % CI: 0.29–0.41) by ELISA test, of which 59.6 % (<em>n</em> = 56/94; 95 % CI: 0.49–0.69) were confirmed by WB, resulting in an overall seroprevalence of 20.7 % (<em>n</em> = 56/270; 95 % CI: 0.16–0.26). Results show that hunting dogs may act as sentinels for monitoring the circulation of <em>Trichinella</em> spp., thereby assessing the potential risk for humans. Enhanced awareness among hunters and improved carcass handling practices are essential to mitigate the risk of transmission, reinforcing the need for an integrated control strategy approach.</div></div>","PeriodicalId":23600,"journal":{"name":"Veterinary parasitology, regional studies and reports","volume":"61 ","pages":"Article 101276"},"PeriodicalIF":1.4,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Paratanaisia infection in wild birds: Histological and molecular characterization, and novel host species","authors":"Izabela Magalhães Arthuso Vasconcelos ,&nbsp;Clarissa Helena Santana ,&nbsp;Lucas dos Reis de Souza ,&nbsp;Ayisa Rodrigues de Oliveira ,&nbsp;Thaynara Parente de Carvalho ,&nbsp;Laice Alves da Silva ,&nbsp;Herlandes Penha Tinoco ,&nbsp;Carlyle Mendes Coelho ,&nbsp;Rafael Otavio Cançado Motta ,&nbsp;Alícia Giolo Hippólito ,&nbsp;Lauro Leite Soares-Neto ,&nbsp;Fernanda Mara Aragão Macedo ,&nbsp;Renato Lima Santos","doi":"10.1016/j.vprsr.2025.101271","DOIUrl":"10.1016/j.vprsr.2025.101271","url":null,"abstract":"<div><div><em>Paratanaisia</em> spp. is a trematode from Eucotylidae family that parasites kidneys and ureters of many bird species. Epidemiology and histopathology associated with parasitism remains poorly understood in wild birds. The aim of this study was to investigate <em>Paratanaisia</em>-elicited lesions, parasite species identification, and assessment of host species among free-ranging or wild bird species kept under human care. Kidney samples from 196 necropsied free-ranging or captive wild birds from the States of Minas Gerais and São Paulo, Brazil, were included in this study. Parasitism was observed in ten birds, from both zoological institutions, including seven different species, two of which with no previous report of <em>Paratanaisia infection</em>, namely one <em>Icterus jamacaii</em> and one <em>Crypturellus noctivagus.</em> Sequencing of PCR amplicons from two birds demonstrated 100 % cover and identity with <em>P. bragai</em>. The orders Galliformes and Passeriformes had a significantly higher frequency of parasitism when compared to Psittaciformes. Therefore, this study expands our knowledge on the prevalence and host spectrum of <em>Paratanaisia</em> spp.</div></div>","PeriodicalId":23600,"journal":{"name":"Veterinary parasitology, regional studies and reports","volume":"61 ","pages":"Article 101271"},"PeriodicalIF":1.4,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular characterization of Strongylida infecting goats and sheep in northeastern Brazil using cytochrome-c oxidase subunit I partial sequencing","authors":"Kerla J.L. Monteiro ,&nbsp;Deiviane A. Calegar ,&nbsp;Beatriz Coronato-Nunes ,&nbsp;Jessica P. Santos ,&nbsp;Elis Regina C. dos Reis ,&nbsp;Polyanna A.A. Bacelar ,&nbsp;Mariana Fonseca Rossi ,&nbsp;Márcio N. Bóia ,&nbsp;Fernando Araújo Monteiro ,&nbsp;Filipe A. Carvalho-Costa ,&nbsp;Lauren H. Jaeger","doi":"10.1016/j.vprsr.2025.101274","DOIUrl":"10.1016/j.vprsr.2025.101274","url":null,"abstract":"<div><div>Strongylida parasitizes goats and sheep; increasing resistance to anthelmintics demands species characterization. This study aims to identify Strongylida of goats and sheep in northeastern Brazil, assessing genetic diversity. Seventeen specimens of <em>Ovis aries</em> and 25 of <em>Capra hircus</em> were studied; DNA was obtained from eggs shed in ruminants' feces. A ∼ 700 bp fragment of cytochrome <em>c</em> oxidase subunit 1 (<em>cox</em>1) was PCR-amplified and sequenced; a computational species delimitation analysis was performed; evolutionary significant units (ESUs) were defined using Poisson Tree Process (PTP) and multi-rate Poisson Tree Process (mPTP). Concerning <em>Oesophagostomum</em>, 2 sequences were <em>Oesophagostomum columbianum</em> (2 haplotypes) and 3 were from other species with no <em>cox1</em> sequences described. This unidentified ESU (3 haplotypes; HD ± SD = 1.000 ± 0.272) was delimited by the PTP and mPTP algorithms, distant 74 mutational steps away from <em>O. columbianum. Trichostrongylus colubriformis</em> (<em>n</em> = 16; 15 haplotypes; haplotype diversity [HD] ± standard deviation [SD] = 0.991 ± 0.025) and <em>Haemonchus contortus</em> (<em>n</em> = 5; 5 haplotypes; HD ± SD = 1.000 ± 0.126) were also characterized. The helminth fauna of small ruminants is genetically diverse and can be monitored before slaughter. Multilocus genetic studies including nuclear targets should be performed to gain a clearer understanding of this diversity.</div></div>","PeriodicalId":23600,"journal":{"name":"Veterinary parasitology, regional studies and reports","volume":"61 ","pages":"Article 101274"},"PeriodicalIF":1.4,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Two Cytauxzoon species in Brazil? Ocelots (Leopardus pardalis) and pumas (Puma concolor) as reservoir for Cytauxzoon spp.: Molecular characterization in three Brazilian biomes","authors":"Joares A. May Jr ,&nbsp;Vinícius Baggio-Souza ,&nbsp;Laura Berger ,&nbsp;Rafaela Mallmann-Bohn ,&nbsp;Adeyldes Oliveira Reis ,&nbsp;Aline Girotto-Soares ,&nbsp;Raíssa Sepulvida ,&nbsp;Jorge Salomão Junior ,&nbsp;Leonardo Sartorello ,&nbsp;Fabio Souza da Silva ,&nbsp;Hugo Borghezan Mozerle ,&nbsp;Marcos Adriano Tortato ,&nbsp;Adriano Rodrigues Lagos ,&nbsp;Felipe Viana Manzano ,&nbsp;Fernando Vieira Machado ,&nbsp;Jorge José Cherem ,&nbsp;Renata Fagundes-Moreira ,&nbsp;João F. Soares","doi":"10.1016/j.vprsr.2025.101272","DOIUrl":"10.1016/j.vprsr.2025.101272","url":null,"abstract":"<div><div>Cytauxzoonosis. is tick-borne disease that can cause subclinical to fatal manifestations in felids worldwide. Our study aimed to molecularly characterize <em>Cytauxzoon</em> spp. in two felid species in three different Brazilian biomes. Blood samples were collected from 27 ocelots and 10 pumas during health monitoring in the Pantanal, Cerrado, and Amazon biomes. Conventional PCR and sequencing of the 18S rRNA and <em>CytB</em> genes were performed, followed by a Bayesian phylogenetic analysis. Of the 37 samples, 73.52 % of ocelots and 60 % of pumas tested positive for <em>Cytauxzoon</em> spp. Phylogenetic analysis confirmed the presence of Cytauxzoon brasiliensis and a strain geentically close to Cytauxzoon felis in pumas and ocelots. Different tick species, such as <em>Amblyomma sculptum</em> were found on infected animals, suggesting a potential vector role for the species. Results support that ocelots and pumas are possible natural reservoirs for <em>Cytauxzoon</em> spp. in different Brazilian biomes. Even so, we highlight that the ecological implications of habitat loss and anthropogenic pressures, may exacerbate the <em>Cytauxzoon</em> pathogenicity for wild felids. Further studies are needed to elucidate the epidemiology and impact of <em>Cytauxzoon</em> spp. on wildlife health.</div></div>","PeriodicalId":23600,"journal":{"name":"Veterinary parasitology, regional studies and reports","volume":"61 ","pages":"Article 101272"},"PeriodicalIF":1.4,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impacts of the seasonal climates, host preference and domestic habitat environment on the abundance of ticks in a district in Tamil Nadu, South India","authors":"Krishnamoorthi Ranganathan ,&nbsp;Govindarajan Renu ,&nbsp;Rajamannar Veeramanoharan ,&nbsp;Nagaraj Jaganathasamy ,&nbsp;Philip Samuel Paulraj","doi":"10.1016/j.vprsr.2025.101267","DOIUrl":"10.1016/j.vprsr.2025.101267","url":null,"abstract":"<div><div>Ticks are medically and veterinary important hematophagous ectoparasites in transmitting many vector-borne diseases to humans and animals. A study was conducted (July 2017–June 2018) in the Madurai district, Tamil Nadu South India, to observe the host preference, abundance and seasonal variations of ectoparasites. A total of 1132 ticks belonging to 15 different species under 4 genera were collected from 114 cows, 35 dogs, 90 goats, 7 cats, and 22 hens. A significant (<em>P</em> &lt; 0.005) variation was observed in the mean burden [range: 1.2–31.3] among the host animals, and tick infestation rate (%) significantly differed (<em>P</em> &lt; 0.001) among host animals [range: 12.9 %–36.8 %] and seasons [range: 7.1 %–38.2 %]. The tick index in cows was high from September to December, in dogs during November &amp; December, in goats during September &amp; December, in cats during December, and in hens during January. There was significant variation in tick collection in seasons and female ticks <em>(P</em> &lt; 0.05) and no variation in the male tick collections seasonally. Lowering the temperature, and increase in rainfall, and relative humidity favoured tick abundance and host animal positivity. This study showed tick abundance is significantly influenced by the temperature, humidity, habitat preference, seasonal pattern, rainfall and host preference of a given host species in an area influenced by the total number of ticks present. Routine surveillance will help health professionals to initiate control of ticks based on host animals' seasonal dominance and may support eradicating tick-borne diseases.</div></div>","PeriodicalId":23600,"journal":{"name":"Veterinary parasitology, regional studies and reports","volume":"61 ","pages":"Article 101267"},"PeriodicalIF":1.4,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}