Carmen L Garreta-Celemín, Oscar Cabezón, María Puig Ribas, Gerard Bota, Lara Moreno-Zarate, Beatriz Arroyo, Juan Lorente-Rejano, Borja Pérez, Carlos Santisteban-Ortiz, Raül Escandell, Mario Fernández-Tizón, Saâd Hanane, Sara Puche, Abdellah Ichen, Ignasi Marco, Johan Espunyes
{"title":"Occurrence of Trichomonas gallinae in the European Turtle Dove (Streptopelia turtur) along its Western Migratory Route.","authors":"Carmen L Garreta-Celemín, Oscar Cabezón, María Puig Ribas, Gerard Bota, Lara Moreno-Zarate, Beatriz Arroyo, Juan Lorente-Rejano, Borja Pérez, Carlos Santisteban-Ortiz, Raül Escandell, Mario Fernández-Tizón, Saâd Hanane, Sara Puche, Abdellah Ichen, Ignasi Marco, Johan Espunyes","doi":"10.7589/JWD-D-25-00083","DOIUrl":"10.7589/JWD-D-25-00083","url":null,"abstract":"<p><p>Trichomonas gallinae is a globally distributed parasite, commonly infecting columbiform species, with the potential to limit population growth. Concerns have arisen regarding its impact across Europe on the declining European Turtle Dove (Streptopelia turtur) population over the last two decades. This study evaluated the prevalence of T. gallinae in European Turtle Doves in various areas of the southern portion of their western flyway, spanning Spain and Morocco, to understand its potential impact on the species' population dynamics. We sampled 121 doves from May to August 2023, with 55.4% testing positive for T. gallinae through PCR analysis. Prevalence varied regionally, with the highest rates observed in Rehamna province, Morocco (73.1%) and the lowest in Catalonia, Spain (37.5%). Despite high infection rates, no clinical signs of trichomoniasis were detected, suggesting a subclinical nature of the infection and consistent with previous findings in wild birds. These results highlight the potential role of the western migratory route in the transmission and geographical dispersion of T. gallinae and suggest that the parasite's presence in European Turtle Dove populations warrants further investigation. The study emphasizes the need for continued monitoring and research into the effects of T. gallinae on breeding success and population health, particularly considering the significant decline in European Turtle Dove populations.</p>","PeriodicalId":17602,"journal":{"name":"Journal of Wildlife Diseases","volume":" ","pages":"611-618"},"PeriodicalIF":1.3,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147839841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
David A Eads, Travis M Livieri, Marc R Matchett, Madisen A Hartlaub, Jason J Fly, Michelle L Hladik, Shelli A Dubay, Paul Roghair, Brooke Fricke, Phillip Dobesh, Ashley Merkel, Eddie Childers, John P Hughes, Dean E Biggins
{"title":"Fipronil Baits as Emerging Tools for Flea Control and Plague Mitigation: Experiments with Cricetid Mice on Prairie Dog Colonies.","authors":"David A Eads, Travis M Livieri, Marc R Matchett, Madisen A Hartlaub, Jason J Fly, Michelle L Hladik, Shelli A Dubay, Paul Roghair, Brooke Fricke, Phillip Dobesh, Ashley Merkel, Eddie Childers, John P Hughes, Dean E Biggins","doi":"10.7589/JWD-D-26-00006","DOIUrl":"10.7589/JWD-D-26-00006","url":null,"abstract":"<p><p>Plague is a zoonotic disease of mammalian hosts and flea vectors. Wildlife biologists most commonly mitigate plague by controlling flea populations. We evaluated the efficacy of edible baits for systemic flea control with two cricetid species on colonies of black-tailed prairie dogs (Cynomys ludovicianus): the western deer mouse (Peromyscus sonoriensis) and the northern grasshopper mouse (Onychomys leucogaster). We tested grain bait with 0.005% fipronil by weight and \"FipBit\" pellets with 0.46-1.52 mg of fipronil/pellet. Flea prevalence was assessed via combing of live-trapped mice. In one experiment with fipronil grain bait and FipBits (n=564 combings), flea prevalence declined from 74% (grain) and 45% (FipBits) before treatments to 0% for both treatments from 30-44 d and from 324-413 d after treatments. During a second experiment with FipBits (n=299 combings), flea prevalence declined from 13% to 32% before treatments to 0% from 11-15 d after treatments, but increased to 29-56% from 349-378 d after treatments. Results herein suggest annual fipronil bait treatments may be most effective for flea control.</p>","PeriodicalId":17602,"journal":{"name":"Journal of Wildlife Diseases","volume":" ","pages":"721-726"},"PeriodicalIF":1.3,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147930785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Samantha E Allen, Brie Hashem, Charlie S Bahnson, Lee Knox, Peach Van Wick
{"title":"Evaluation of Pronghorn (Antilocapra americana) Chemical Immobilization in a Captive Research Facility in Wyoming, USA (2021-24).","authors":"Samantha E Allen, Brie Hashem, Charlie S Bahnson, Lee Knox, Peach Van Wick","doi":"10.7589/JWD-D-25-00205","DOIUrl":"10.7589/JWD-D-25-00205","url":null,"abstract":"<p><p>A retrospective case study evaluated the effectiveness of butorphanol (27.3 mg/mL), azaperone (9.1 mg/mL), and medetomidine (10.9 mg/mL; BAM) in captive pronghorn (Antilocapra americana) during 2021-24. Immobilizations were inconsistent, with documented cases of spontaneous arousal (e.g., head movement, walking, running). Use of BAM in pronghorn should be considered with caution.</p>","PeriodicalId":17602,"journal":{"name":"Journal of Wildlife Diseases","volume":"62 3","pages":"742-745"},"PeriodicalIF":1.3,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148368784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Barbora Pavl'áková, Noemi Kožejová, Viktória Majláthová, Monika Kassayová, Miroslav Baňas, Grzegorz Grzywacewszki, Paweł Łapiński, Igor Majláth
{"title":"Blood Parasites of the Phylum Apicomplexa and Hematological Values in European Pond Turtles (Emys orbicularis) from Lublin Voivodeship, Eastern Poland.","authors":"Barbora Pavl'áková, Noemi Kožejová, Viktória Majláthová, Monika Kassayová, Miroslav Baňas, Grzegorz Grzywacewszki, Paweł Łapiński, Igor Majláth","doi":"10.7589/JWD-D-25-00178","DOIUrl":"10.7589/JWD-D-25-00178","url":null,"abstract":"<p><p>This study aimed to detect and characterize intracellular blood parasites of the phylum Apicomplexa in freshwater turtles. Microscopic analysis identified developmental stages of gamonts and premeronts belonging to the genus Haemogregarina, while molecular analyses confirmed the presence of Haemogregarina stepanowi, Haemogregarina spp., and Hepatozoon sp. The mean parasitemia was 29.7 parasites per 10,000 erythrocytes. Hematologic examinations showed elevated basophil and eosinophil counts in infected individuals, indicating an immune response to the infection. Phylogenetic analyses supported the close genetic relationship of isolates from this study with hemoparasites found in other freshwater turtle species. Overall, these results contribute to the understanding of the diversity and genetic relationships of hemogregarine species in freshwater turtles.</p>","PeriodicalId":17602,"journal":{"name":"Journal of Wildlife Diseases","volume":" ","pages":"619-632"},"PeriodicalIF":1.3,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148055225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Byungkwan Oh, Bae-Keun Park, Myeongsu Kim, Jae-Ik Han, Sang-Ik Oh, Bumseok Kim
{"title":"Ectopic Parasitism of Pegosomum bubulcum in an Eastern Great Egret (Ardea alba modesta).","authors":"Byungkwan Oh, Bae-Keun Park, Myeongsu Kim, Jae-Ik Han, Sang-Ik Oh, Bumseok Kim","doi":"10.7589/JWD-D-25-00057","DOIUrl":"10.7589/JWD-D-25-00057","url":null,"abstract":"<p><p>Multiple trematodes identified as Pegosomum bubulcum, a species that typically inhabits avian bile ducts, were found in ectopic locations, including the liver surface, coelomic cavity, and lungs of an Eastern Great Egret (Ardea alba modesta), which also exhibited severe coelomitis, airsacculitis, and a markedly dilated, fibrotic extrahepatic bile duct.</p>","PeriodicalId":17602,"journal":{"name":"Journal of Wildlife Diseases","volume":" ","pages":"727-730"},"PeriodicalIF":1.3,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147839823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Julia Gonzalez, Lisa Auckland, Sara A Neumann, Arianna Punzalan, Jennifer Kennedy, Julie Barnes, Jordan Davis-Powell, Sarah A Hamer
{"title":"Detection of Rickettsia hoogstraalii and Rickettsia lusitaniae in Argas (Persicargas) ricei Ticks Infesting California Condors (Gymnogyps californianus).","authors":"Julia Gonzalez, Lisa Auckland, Sara A Neumann, Arianna Punzalan, Jennifer Kennedy, Julie Barnes, Jordan Davis-Powell, Sarah A Hamer","doi":"10.7589/JWD-D-25-00150","DOIUrl":"10.7589/JWD-D-25-00150","url":null,"abstract":"<p><p>The California Condor (Gymnogyps californianus) is the largest North American land bird and an endangered species. In September 2024, the Bitter Creek National Wildlife Refuge reported a heavy soft tick infestation on three juvenile condors that were to be released to the wild. One was transported to Los Angeles Zoo for treatment because it showed clinical signs associated with tick paralysis, a neurotoxin-mediated paralytic syndrome. The others had slight weight loss and extensive scabbing in the areas that had previous tick burdens. Eight ticks found on perches in the flight pen were identified as Argas (Persicargas) ricei. Pathogen testing of those ticks found four positives for Rickettsia hoogstraalii, a species previously detected in raptors and their soft ticks in the southwestern USA. One tick was positive for Rickettsia lusitaniae, associated with soft ticks in bats worldwide and closely related to Rickettsia felis and R. hoogstraalii. No ticks were positive for Borrelia spp. Blood meal analysis confirmed that the California Condor was the associated host for a subset of tested ticks. All condors improved clinically with ectoparasite treatment and supportive care. These findings suggest a clear interaction between A. ricei ticks and condors. Managers should consider the checking and removal of ticks from temporary bird housing and prophylactic or event-based treatments of translocated birds; further, Rickettsia species could be considered in future wildlife health investigations.</p>","PeriodicalId":17602,"journal":{"name":"Journal of Wildlife Diseases","volume":" ","pages":"683-689"},"PeriodicalIF":1.3,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147839826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mariana M Furtado, Grazielle Soresini, Anah T A Jácomo, Betina Metzger, Fernando C W Rosas, Claudiane S Ramalheira, Guilherme Mourão, Jane Megid, José D Ramos Filho, José S Ferreira Neto, Karin C Scheffer, Leandro Silveira, Lucia H O'Dwyer, Marcia M M Cabral, Marina G Bueno, Solange M Gennari, Susan D Allendorf, Caroline Leutchenberger
{"title":"Pathogen Surveillance in Free-ranging Giant Otters (Pteronura brasiliensis) in Three Ecoregions of Brazil.","authors":"Mariana M Furtado, Grazielle Soresini, Anah T A Jácomo, Betina Metzger, Fernando C W Rosas, Claudiane S Ramalheira, Guilherme Mourão, Jane Megid, José D Ramos Filho, José S Ferreira Neto, Karin C Scheffer, Leandro Silveira, Lucia H O'Dwyer, Marcia M M Cabral, Marina G Bueno, Solange M Gennari, Susan D Allendorf, Caroline Leutchenberger","doi":"10.7589/JWD-D-25-00104","DOIUrl":"10.7589/JWD-D-25-00104","url":null,"abstract":"<p><p>The giant otter (Pteronura brasiliensis) is the largest river otter in the world and globally classified as endangered. Little information is available regarding pathogen exposure in this species due to low densities and the challenges associated with capturing individuals in the wild. Serological assays were used to investigate exposure of 10 free-ranging giant otters from different Brazilian ecoregions to canine distemper virus (CDV), parvovirus, rabies virus, Leptospira spp., smooth Brucella, and Toxoplasma gondii. Molecular assays were conducted to assess the presence of Hepatozoon spp., Cytauxzoon spp., and Babesia spp. Serum antibodies were detected for CDV (5/10), canine parvovirus (2/10), rabies virus (1/7), Leptospira spp. (2/10), and T. gondii (3/10). None of the giant otters were exposed to smooth Brucella. Of the individuals that received molecular testing, 2/6 were positive for Hepatozoon spp., and 0/6 were positive for Babesia spp. or Cytauxzoon spp. These results provide the first data on pathogen exposure in free-ranging giant otters. Long-term monitoring of these populations is essential to determine which pathogens are endemic and which may pose a conservation threat to giant otters.</p>","PeriodicalId":17602,"journal":{"name":"Journal of Wildlife Diseases","volume":" ","pages":"666-674"},"PeriodicalIF":1.3,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147941480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Escherichia coli Carrying Antimicrobial Resistance in Rehabilitating Bolivian Red Howler Monkeys (Alouatta sara): A Pre-Release Risk in the Peruvian Amazon.","authors":"Danae S Flores, Nancy V Carlos","doi":"10.7589/JWD-D-26-00005","DOIUrl":"10.7589/JWD-D-26-00005","url":null,"abstract":"<p><p>The release of rehabilitated wildlife can introduce antimicrobial resistance (AMR) into wild ecosystems. We examined AMR in Escherichia coli isolated from 44 Bolivian red howler monkeys (Alouatta sara) at a rescue center in Madre de Dios, Peru. Fecal samples were collected noninvasively and processed for E. coli isolation. Antimicrobial susceptibility testing against 12 antibiotics was performed and extended-spectrum beta-lactamase (ESBL) production was phenotypically confirmed. Multidrug resistance (MDR) and the multiple antibiotic resistance (MAR) index were calculated. We isolated E. coli from 43/44 sampled monkeys (98%). Only 1/85 (1%) E. coli isolates was an ESBL producer, and this isolate exhibited MDR to eight antibiotics across five classes. Non-ESBL isolates (n=84) showed the highest resistance to tetracycline (13%), sulfamethoxazole-trimethoprim (10%), and chloramphenicol (5%). Five isolates (6%) were MDR, and seven (8%) had a MAR index ≥0.2. Although ESBL prevalence was low, the presence of MDR and critical AMR profiles emphasizes the importance of surveillance, following the One Health approach, in primate rehabilitation programs to help prevent potential AMR spread during wildlife release.</p>","PeriodicalId":17602,"journal":{"name":"Journal of Wildlife Diseases","volume":" ","pages":"715-720"},"PeriodicalIF":1.3,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147982338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Amritha Mallikarjun, Clara Wilson, Ila Charendoff, Molly Buis, Madison B Moore, Michelle Gibison, Cynthia M Otto
{"title":"Assessing the Impact of Fecal Volume on Detection Dog Responses to Chronic Wasting Disease Training Aids.","authors":"Amritha Mallikarjun, Clara Wilson, Ila Charendoff, Molly Buis, Madison B Moore, Michelle Gibison, Cynthia M Otto","doi":"10.7589/JWD-D-25-00119","DOIUrl":"10.7589/JWD-D-25-00119","url":null,"abstract":"<p><p>Chronic wasting disease (CWD) is a fatal prion disease in cervids. Because prions persist in the environment, early detection is essential for containment. Trained detection dogs have shown promise as a noninvasive surveillance method through identification of volatile organic compounds associated with CWD in white-tailed deer (WTD; Odocoileus virginianus) fecal matter. To reduce the risk of environmental contamination, recent CWD detection work has used cotton training aids incubated (i.e., passively odor exposed without direct contact) with small quantities of WTD fecal matter. However, operational detection scenarios often involve exposure to much larger volumes of fecal matter, requiring detection dogs to generalize from their training aid odor to the real-world target odor. This study examined whether detection dogs trained on cotton aids incubated for 24 h with 1-2 g of fecal matter (small quantity) could generalize to aids incubated for 24 h with 22 g of fecal matter (large quantity). Four detection dogs completed two tests: the first test measured their initial responses to the large-quantity aids and the second test was conducted after three training sessions in which they were positively reinforced for alerting to the large-quantity aids. Dogs did not significantly differentiate between CWD-positive and CWD-negative samples in the first large-quantity test, but showed significant improvement after training; as such, generalization did not occur spontaneously from training only on small-quantity aids, but a brief training exposure to the larger-quantity aids enabled better performance. This study emphasizes the importance of considering odor variability between training scenarios and the operational scenario. Results provide information relevant to improving operational field performance. Future work should explore training paradigms that increase flexibility in odor recognition across different contexts.</p>","PeriodicalId":17602,"journal":{"name":"Journal of Wildlife Diseases","volume":" ","pages":"547-557"},"PeriodicalIF":1.3,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147982254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Leah A Owens, Leah K Berkman, Brent S Pease, Christopher D Dunn, Clayton K Nielsen, John W Groninger, Kylie Bosch, Deborah Hudman, Shelby R Timm, Tony L Goldberg
{"title":"Viruses and Parasites in Swamp Rabbits (Sylvilagus aquaticus): A Baseline Survey to Aid Conservation Efforts.","authors":"Leah A Owens, Leah K Berkman, Brent S Pease, Christopher D Dunn, Clayton K Nielsen, John W Groninger, Kylie Bosch, Deborah Hudman, Shelby R Timm, Tony L Goldberg","doi":"10.7589/JWD-D-25-00059","DOIUrl":"10.7589/JWD-D-25-00059","url":null,"abstract":"<p><p>Technical advancements have enabled the discovery of potential pathogens in an ever-broadening range of wildlife taxa. To further the scope of this body of knowledge and to inform conservation efforts, we examined potential disease agents present in swamp rabbits (Sylvilagus aquaticus) of southeastern Missouri, USA, during winter 2023. This region represents the northernmost portion of the species' range and is characterized by an intermixed landscape of preferred bottomland hardwood forest and agricultural landcover. Concerns about infectious disease threats to swamp rabbits have increased since the emergence of rabbit hemorrhagic disease, caused by rabbit hemorrhagic disease virus 2 (RHDV2; Caliciviridae, Lagovirus europaeus), that has spread to domestic, wild, and feral rabbits and hares, predominantly in the western and midwestern USA. We applied metagenomic and metabarcoding methods, designed to characterize communities of viruses and parasites, to noninvasively collected rabbit fecal samples. We identified seven viruses and eight parasite genera that probably infect mammals. Although some relatives of these agents cause disease, none are unexpected in lagomorphs, and none are considered a health concern. Notably, RHDV2 was not detected. These results provide baseline data for future conservation and management efforts, especially if RHDV2 or other pathogens become a concern for swamp rabbits.</p>","PeriodicalId":17602,"journal":{"name":"Journal of Wildlife Diseases","volume":" ","pages":"570-581"},"PeriodicalIF":1.3,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147930821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}