Veterinary parasitology, regional studies and reports最新文献

{"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}

{"title":"First report of Hepatozoon silvestris in a domestic cat (Felis catus) from New York","authors":"Rachel C. Smith ,&nbsp;Sarah Nolan ,&nbsp;Alys Harshbarger ,&nbsp;Jim Meinkoth ,&nbsp;Ruth C. Scimeca","doi":"10.1016/j.vprsr.2025.101270","DOIUrl":"10.1016/j.vprsr.2025.101270","url":null,"abstract":"<div><div><em>Hepatozoon</em> spp. are apicomplexan parasites that infect a wide variety of animals including felids, with cats serving as the intermediate host and blood-feeding arthropods serving as the definitive hosts. Although three distinct <em>Hepatozoon</em> spp. have been described infecting domestic cats, little is known about the transmission and pathogenicity of feline Hepatozoonosis. Within the United States, numerous reports describe <em>Hepatozoon</em> spp. in wild felids, however, there are only a few reports of <em>Hepatozoon</em> spp. infection in domestic cats. Here, we describe the case of a domestic cat from New York, USA, infected with <em>Hepatozoon silvestris</em> and confirmed by molecular analysis. This report highlights the importance of considering this parasite in veterinary clinical practices and epidemiological studies in domestic cat populations in the country. <em>Hepatozoon silvestris</em> has been previously reported in felids in Central and Eastern Europe. Considering this case and other recent reports of <em>Hepatozoon</em> spp. in wild felids in the USA, it is likely that there are <em>Hepatozoon</em> spp. infecting both wild and domestic felids in the USA which are currently underrecognized.</div></div>","PeriodicalId":23600,"journal":{"name":"Veterinary parasitology, regional studies and reports","volume":"61 ","pages":"Article 101270"},"PeriodicalIF":1.4,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887474","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":"Prevalence of parasitism in client-owned dogs determined by fecal examinations in the Pacific northwest, United States, in 2021–2023","authors":"Yoko Nagamori ,&nbsp;Jeramey L. Kennedy ,&nbsp;Elisa Miller ,&nbsp;Laurie L. Kennedy ,&nbsp;Chelsey Wood ,&nbsp;Quinn Geraghty ,&nbsp;Kathryn Mulkey ,&nbsp;Zephran Warren ,&nbsp;Melissa Houma ,&nbsp;Nishantha Samarakoon ,&nbsp;Ethan R. Mah ,&nbsp;Daniela Rodriguez ,&nbsp;Breanne Coulthard ,&nbsp;Andrea Bergman ,&nbsp;Jezaniah-Kira S. Tena","doi":"10.1016/j.vprsr.2025.101269","DOIUrl":"10.1016/j.vprsr.2025.101269","url":null,"abstract":"<div><div>It is important to continuously monitor the prevalence of parasitic infections in client-owned dogs. However, very limited information is available for the Pacific Northwest (PNW) region of the United States (US). Our main study objective was to determine the prevalence of parasitism observed in the feces of client-owned dogs in the PNW, US. Additionally, the prevalence of parasitic infections was statistically compared by sex, age, and seasonality. Results of all the fecal examinations with various methodologies performed at Zoetis Reference Laboratories in Mukilteo, Washington, from February 1, 2021 to December 31, 2023, were examined. A total of 82,603 fecal samples tested were included in this study. Most samples (88.47 %; 73,076/82,603) did not contain any parasites or eggs. A single parasite was identified in 8322 (10.07 %) samples, whereas multiple parasites were seen in 1205 (1.46 %) samples. The most commonly diagnosed parasite was <em>Giardia</em> (6.77 %, 5596/82,603), followed by <em>Cystoisospora</em> (1.86 %, 1535/82,603), <em>Toxocara canis</em> (1.85 %, 1526/82,603), <em>Ancylostoma</em> (0.82 %, 679/82,603), <em>Cryptosporidium</em> (0.76 %, 629/82,603), <em>Trichuris vulpis</em> (0.33 %, 271/82,603), <em>Toxascaris leonina</em> (0.22 %, 178/82,603), taeniids (0.15 %, 122/82,603), <em>Sarcocystis</em> (0.12 %, 84/82,603), <em>Nanophyetus salmincola</em> (0.09 %, 74/82,603), <em>Dipylidium caninum</em> (0.07 %, 60/82,603), <em>Neospora</em>-like coccidia (0.06 %, 47/82,603), <em>Capillaria</em> (0.03 %, 27/82,603), <em>Demodex</em> (0.02 %; 17/82,603), <em>Baylisascaris</em> (0.01 %, 9/82,603), <em>Spirometra</em> (0.01 %, 7/82,603), and <em>Otodectes cynotis</em> (0.01 %; 5/82,603). Additionally, <em>Strongyloides stercoralis</em> larvae were found in four cases, and <em>Alaria</em> eggs, <em>Cheyletiella</em> mites<em>,</em> and possible <em>Oslerus</em>/<em>Filaroides</em> larvae were identified in one case. This study indicates the importance of routine fecal examinations and application of broad-spectrum anthelmintics to dogs in the PNW region.</div></div>","PeriodicalId":23600,"journal":{"name":"Veterinary parasitology, regional studies and reports","volume":"61 ","pages":"Article 101269"},"PeriodicalIF":1.4,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894736","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":"Survey of lice Fauna in ornamental chickens from São Paulo and Rio de Janeiro states, Brazil","authors":"Isabella Pereira Pesenato ,&nbsp;Ricardo Bassini-Silva ,&nbsp;João Vitor Xavier ,&nbsp;Patrícia Jacqueline Thyssen ,&nbsp;Fernando de Castro Jacinavicius","doi":"10.1016/j.vprsr.2025.101266","DOIUrl":"10.1016/j.vprsr.2025.101266","url":null,"abstract":"<div><div>Once primarily consumed by humans, chickens have evolved into ornamental poultry industries, with a growing market in Brazil. Ectoparasites, such as chewing lice, can cause mild to severe lesions in chickens. Breeding and disease prevention methods concerning ornamental birds in Brazil are still understudied, with the techniques still based on poultry breeding. This study brings light into lice population that can affect ornamental chickens. The collections were conducted in four properties in São Paulo and Rio de Janeiro states, Brazil, where Silkie and Brahma breeds chickens were examined. Lice were collected and identified as <em>Menopon gallinae, Menacanthus stramineus,</em> and <em>Columbicola columbae,</em> characterizing a co-parasitism with increased clinical symptoms, such as low egg production and discomfort. Brazil's poor regulation of ornamental chicken farming leads to breeders not following quarantine recommendations and breeding different species together, increasing ectoparasite infestations. It raises concerns about lice parasites and the need for further research to understand parasites and improve breeding conditions.</div></div>","PeriodicalId":23600,"journal":{"name":"Veterinary parasitology, regional studies and reports","volume":"61 ","pages":"Article 101266"},"PeriodicalIF":1.4,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143937162","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 identification of anopheline mosquitoes in goat farms of Menoreh Highland, Kulon Progo, Yogyakarta","authors":"Yudhi Ratna Nugraheni ,&nbsp;Aan Awaludin ,&nbsp;Roza Azizah Primatika ,&nbsp;Bayu Priyo Kartiko ,&nbsp;Dias Aprita Dewi ,&nbsp;Bambang Ariyadi ,&nbsp;Apinya Arnuphapprasert ,&nbsp;Wisnu Nurcahyo ,&nbsp;Joko Prastowo","doi":"10.1016/j.vprsr.2025.101268","DOIUrl":"10.1016/j.vprsr.2025.101268","url":null,"abstract":"<div><div>The anopheline mosquito is an exciting subject of study, as it is responsible for disease transmission worldwide. Goat malaria is one of the diseases spread by anopheline mosquitoes. This study aimed to investigate the diversity of anopheline mosquitoes in the Menoreh Highland Areas of Girimulyo and Samigaluh, Kulon Progo, Indonesia. A total of 38 anopheline mosquitoes were collected twice weekly from March to April 2024. Morphological identification was immediately performed using a light microscope. Nine representative mosquitoes from each species were subjected to molecular analysis using polymerase chain reaction (PCR) targeting the cytochrome oxidase subunit 2 (<em>COII</em>) gene. The results of this study showed that the anopheline mosquitoes collected belonged to four species: <em>Anopheles maculatus</em>, <em>An. barbirostris</em>, <em>An. annularis</em>, and <em>An. vagus</em>. The dominance index (D) of the total anopheline population was 0.452, categorizing it as moderate. The diversity index (H′) was calculated as 1.027, indicating moderate diversity. Among the identified anopheline mosquitoes, <em>An. maculatus</em> was the most prevalent species, accounting for 63.16 % of the total population. Molecular analysis using PCR and Sanger sequencing identified four species in this study based on partial sequences of COII nucleotide analysis. A phylogenetic tree was constructed that highlighted genetic diversity within the anopheline population. This study emphasized the importance of understanding mosquito diversity on goat farms. Additionally, further research is needed to investigate environmental factors influencing mosquito distribution and potential resistance to control methods.</div></div>","PeriodicalId":23600,"journal":{"name":"Veterinary parasitology, regional studies and reports","volume":"61 ","pages":"Article 101268"},"PeriodicalIF":1.4,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892161","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":"Morphological and molecular characterization of a pure isolate of Eimeria lata, identified for the first time in domestic chickens in Brazil","authors":"Bruno Ferraz Itoyama ,&nbsp;Bruno Pereira Berto ,&nbsp;Guilherme Zaratin Dumalakas ,&nbsp;Brayan Kurahara ,&nbsp;Eduardo Anzai Furlaneti ,&nbsp;Marcelo Vasconcelos Meireles","doi":"10.1016/j.vprsr.2025.101265","DOIUrl":"10.1016/j.vprsr.2025.101265","url":null,"abstract":"<div><div>Coccidiosis of domestic chickens is caused by seven <em>Eimeria</em> species, in addition to three recently proposed species: <em>Eimeria lata</em>, <em>Eimeria nagambie</em>, and <em>Eimeria zaria</em>. This study reports the first identification of <em>E. lata</em> in domestic chickens in Brazil, the successful establishment of a pure <em>E. lata</em> isolate, and its morphological and molecular analyses. Fecal samples were collected from six extensive production systems in the state of São Paulo, Brazil, and screened for the 10 <em>Eimeria</em> species of domestic chickens through species-specific PCRs. To obtain <em>E. lata</em> oocysts, a mixture of oocysts from various <em>Eimeria</em> species was sequentially administered to commercial broiler chickens vaccinated against coccidiosis. Subsequently, a pure isolate of <em>E. lata</em> was obtained by micromanipulation and propagated in chickens. <em>Eimeria lata</em> oocysts were further subjected to morphological and molecular characterization. In conclusion, these findings constitute the first documentation of <em>E. lata</em> in domestic chickens in Brazil. The Brazilian <em>E. lata</em> isolate, designated BR-AMC, exhibited molecular and morphological characteristics similar to those of <em>E. lata</em> isolates from other countries.</div></div>","PeriodicalId":23600,"journal":{"name":"Veterinary parasitology, regional studies and reports","volume":"61 ","pages":"Article 101265"},"PeriodicalIF":1.4,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879052","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":"First report of anti-Toxoplasma gondii antibodies in sea turtles","authors":"Anna Elisa Athayde-Gusmão ,&nbsp;Bianca Cardozo Afonso ,&nbsp;Edwards Frazão-Teixeira ,&nbsp;Antônio Calais ,&nbsp;Regiane de Fátima Ferreira ,&nbsp;Leandro Egert ,&nbsp;Luis Felipe Mayorga ,&nbsp;Maria Ferreira Rosa ,&nbsp;Leonardo Serafim da Silveira ,&nbsp;Daniel Guimarães Ubiali ,&nbsp;Andressa Ferreira da Silva","doi":"10.1016/j.vprsr.2025.101263","DOIUrl":"10.1016/j.vprsr.2025.101263","url":null,"abstract":"<div><div><em>Toxoplasma gondii</em> is a zoonotic protozoan with an emerging ecological impact, particularly in coastal and marine ecosystems affected by terrestrial runoff. This study presents the first evidence of anti-<em>T. gondii</em> antibodies in sea turtles along the Espírito Santo coast, Brazil. A total of 102 serum samples were analyzed, primarily from green turtles (<em>Chelonia mydas</em>), with one loggerhead turtle (<em>Caretta caretta</em>). Samples were collected between 2017 and 2024 from two institutions: IPCMar and IPRAM. The modified agglutination test (MAT) revealed an overall seroprevalence of 8.8 % (9/102), with titers ranging from 1:25 to 1:100. Notably, most positive samples (80.0 %) were detected in 2024, suggesting a potential increase in environmental contamination, possibly linked to climate change and anthropogenic factors. The results provide serological evidence supporting the hypothesis that sea turtles might be susceptible to <em>T. gondii</em> exposure through contaminated prey, such as bivalves, algae, and fish, as well as runoff from terrestrial sources. Given their ecological importance and conservation status, these findings raise concerns about the health impacts of <em>T. gondii</em> on sea turtles and highlight the need for further research into their role in the parasite's transmission cycle. These findings underscore the significance of monitoring zoonotic pathogens in marine ecosystems to better understand the interplay between environmental changes, wildlife health, and pathogen spread.</div></div>","PeriodicalId":23600,"journal":{"name":"Veterinary parasitology, regional studies and reports","volume":"61 ","pages":"Article 101263"},"PeriodicalIF":1.4,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874290","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}