Although cysts of Sarcocystis spp. (sarcocysts) are considered uncommon in muscles of canids, we identified mature sarcocysts in tongues of 20 (40.8 %) of 49 gray wolves (Canis lupus arctos) from Alaska, USA. Two kinds of sarcocysts (thin-walled and thick-walled) were detected; based on the appearance of the sarcocyst wall, they resembled Sarcocystis caninum and Sarcocystis svanai of the domestic dog (Canis familiaris). Thick-walled cysts were identified in 18 of 49 wolves and thin-walled were seen in three of 49 wolves. Molecularly, Sarcocystis species were characterized using 18S rRNA, 28S rRNA, cox1 and rpoB genetic markers. All these markers showed >99 % identity to either of S. caninum or S. svanai described previously from the domestic dog. Trichinella spp. larvae were found in histological sections of tongues of 7 (14.2 %) of 49 gray wolves.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.vprsr.2025.101207 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Osteochondrosis Manifesta in Three Related Free-Ranging Gray Wolves (Canis lupus lupus) in Switzerland.
J Wildl Dis
March 2025
Institute for Fish and Wildlife Health, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Laenggassstrasse 122a, 3012 Bern, Switzerland.
Osteochondrosis is a common disease that has been described in several farm and pet species as well as in some wildlife species, including captive roan antelope (Hippotragus equinus), a giraffe (Giraffa camelopardalis reticulata), snow leopard (Panthera uncia), and free-ranging wild boar (Sus scrofa ferus). It has not previously been confirmed in gray wolves (Canis lupus lupus). Postmortem radiographs of three free-ranging, juvenile sibling wolves revealed osteochondrosis in at least one of the glenohumeral joints (GHJs) in all individuals.
View Article and Find Full Text PDFHigh prevalence of Sarcocystis and Trichinella infections in skeletal muscles of gray wolves (Canis lupus arctos) from Alaska, USA.
Vet Parasitol Reg Stud Reports
February 2025
Alaska Department of Fish and Game, Division of Wildlife Conservation, 1300 College Road, Fairbanks, AK 99701, USA.
Although cysts of Sarcocystis spp. (sarcocysts) are considered uncommon in muscles of canids, we identified mature sarcocysts in tongues of 20 (40.8 %) of 49 gray wolves (Canis lupus arctos) from Alaska, USA.
View Article and Find Full Text PDFNew evidence from the northern Apennines, Italy, suggests a southward expansion of Echinococcus multilocularis range in Europe.
Sci Rep
March 2025
Ethology Unit, Department of Biology, University of Pisa, Pisa, Italy.
Echinococcus multilocularis (Em) is a neglected zoonotic cestode circulating among wild canids and voles across the northern hemisphere, and is the aetiological agent of alveolar echinococcosis in humans. The expansion of the European distribution of this parasite has been raising public health concerns in recent decades. We aimed to investigate the occurrence of Em and other taeniids in wild carnivore faeces in the Apuan Alps Regional Park and the Monte Pisano mountain chain (northern Tuscany), a few hundred kilometres from the nearest report of Em in Italy.
View Article and Find Full Text PDFVegetation influences wolf fine-scale habitat selection and movement rate in a logged coastal rainforest.
Oecologia
February 2025
Natural Resources Institute, University of Manitoba, 119 St. Paul's College 70, Winnipeg, MB, R3T 2M6, Canada.
Vegetation and its modification by humans can shape wildlife habitat selection and movement. A better understanding of how wolves select and move through natural and human modified vegetative cover can be used to implement forest management that considers impacts on wolves and their prey. We analyzed fine-scale wolf habitat selection and movement in a coastal temperate rainforest (Prince of Wales Island, Alaska, USA) in relation to: (1) young (≤ 30 years) and old (> 30 years) logged areas, (2) continuous measures of vegetative cover (as estimated via LiDAR), and (3) distance to roads, using integrated step-selection analysis (iSSA).
View Article and Find Full Text PDFIsolation-by-distance patterns in genetic variation are a widespread feature of the geographic structure of genetic variation in many species, and many methods have been developed to illuminate such patterns in genetic data. However, long-range genetic similarities also exist, often as a result of rare or episodic long-range gene flow. Jointly characterizing patterns of isolation-by-distance and long-range genetic similarity in genetic data is an open data analysis challenge that, if resolved, could help produce more complete representations of the geographic structure of genetic data in any given species.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!