Morphological and molecular identification of Toxocara vitulorum in water buffalo calves (Bubalus bubalis) in Tabasco, Mexico

IF 1.6 Q3 PARASITOLOGY

Veterinary parasitology, regional studies and reports Pub Date : 2026-01-01 Epub Date: 2025-12-23 DOI:10.1016/j.vprsr.2025.101412

Jesús Alonso Panti-May , Nadia Florencia Ojeda-Robertos

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引用次数: 0

Abstract

Toxocara vitulorum is an intestinal nematode of cattle, water buffaloes, and other bovids. This parasite can cause high morbidity and mortality in calves and economic losses. Although T. vitulorum has been reported in cattle in Mexico, there are no records in water buffaloes. This study details the morphological and molecular identification of T. vitulorum obtained from three buffalo calves in Tabasco, Mexico. Nematodes collected from buffalo calves were studied using morphological techniques and partial sequences of the 28S ribosomal RNA (28S) gene and the cytochrome c oxidase 1 mitochondrial (COI) gene. Three female nematodes showed morphological characteristics and measurements reported for T. vitulorum. Two 28S sequences and one COI sequence of T. vitulorum isolated from buffalo calves were obtained and used in phylogenetic analyses, confirming species identity. This study provides the first record and genetic sequences of T. vitulorum in Mexico. It is recommended to establish surveillance and control programs for intestinal parasites of buffalo herds in Mexico.

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墨西哥塔巴斯科水牛幼崽（Bubalus bubalis）的形态和分子鉴定

牛弓形虫是牛、水牛和其他动物的肠道线虫。这种寄生虫可造成犊牛的高发病率和死亡率，并造成经济损失。虽然在墨西哥有报道牛中有疣状绦虫，但在水牛中没有记录。本文详细介绍了墨西哥塔巴斯科3头水牛幼崽的形态和分子鉴定。采用形态学技术和28S核糖体RNA （28S）基因和细胞色素c氧化酶1线粒体（COI）基因的部分序列对从水牛犊牛采集的线虫进行了研究。据报道，三种雌线虫具有形态特征和测量值。从水牛犊牛中分离得到2个28S序列和1个COI序列，并进行系统发育分析，确认了种的身份。本研究提供了在墨西哥首次发现的疣绦虫的记录和基因序列。建议在墨西哥建立水牛群肠道寄生虫的监测和控制计划。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Veterinary parasitology, regional studies and reports Multiple-

CiteScore

2.90

自引率

7.10%

发文量

126

审稿时长

97 days

期刊介绍： Veterinary Parasitology: Regional Studies and Reports focuses on aspects of veterinary parasitology that are of regional concern, which is especially important in this era of climate change and the rapid and often unconstrained travel of people and animals. Relative to regions, this journal will accept papers of the highest quality dealing with all aspects of disease prevention, pathology, treatment, epidemiology, and control of parasites within the field of veterinary medicine. Also, case reports will be considered as they add to information related to local disease and its control; such papers must be concise and represent appropriate medical intervention. Papers on veterinary parasitology from wildlife species are acceptable, but only if they relate to the practice of veterinary medicine. Studies on vector-borne bacterial and viral agents are suitable, but only if the paper deals with vector transmission of these organisms to domesticated animals. Studies dealing with parasite control by means of natural products, both in vivo and in vitro, are more suited for one of the many journals that now specialize in papers of this type. However, due to the regional nature of much of this research, submissions may be considered based upon a case being made by the author(s) to the Editor. Circumstances relating to animal experimentation must meet the International Guiding Principles for Biomedical Research Involving Animals as issued by the Council for International Organizations of Medical Sciences (obtainable from: Executive Secretary C.I.O.M.S., c/o W.H.O., Via Appia, CH-1211 Geneva 27, Switzerland).