<i>Ollulanus tricuspis</i> in Turkish cats: first clinical case and molecular confirmation


Tuygun T., Ozturk M., Dinc R., Bölükbaş C. S., Gürler A. T., Umur Ş.

JOURNAL OF HELMINTHOLOGY, vol.100, 2026 (SCI-Expanded, Scopus)

  • Publication Type: Article / Article
  • Volume: 100
  • Publication Date: 2026
  • Doi Number: 10.1017/s0022149x2610176x
  • Journal Name: JOURNAL OF HELMINTHOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, BIOSIS, EMBASE, MEDLINE, Zoological Record, Academic Search Ultimate (EBSCO), Natural Science Collection (ProQuest), Health Research Premium Collection (ProQuest)
  • Open Archive Collection: AVESIS Open Access Collection
  • Ondokuz Mayıs University Affiliated: Yes

Abstract

This study was conducted to determine the prevalence of the gastric nematode Ollulanus tricuspis in domestic cats in Samsun province, T & uuml;rkiye, and to perform molecular phylogenetic analysis of the obtained isolates. Following the initial diagnosis of O. tricuspis in a domestic cat presenting with chronic vomiting, stomach contents from 50 necropsied cats were microscopically examined for a broader survey. The ITS-1, 5.8S, and ITS-2 gene regions of the parasites obtained from positive samples were amplified and sequenced using PCR. Phylogenetic analyses were performed using the maximum likelihood (ML) and Bayesian inference (BI) analyses. The prevalence of O. tricuspis in the examined samples was determined to be 6%. Literature data show a wide variation in global prevalence, ranging from 0.2% (USA) to 42% (Australia). This study is the first report to reveal the presence of O. tricuspis at the molecular level in T & uuml;rkiye.