Molecular Epidemiology of Parasitic Infection in Wild and Domestic Animals

A special issue of Veterinary Sciences (ISSN 2306-7381). This special issue belongs to the section "Veterinary Microbiology, Parasitology and Immunology".

Deadline for manuscript submissions: 25 September 2026 | Viewed by 830

Editor

Special Issue Information

Dear Colleagues,

Wild and domestic animals are reservoirs of a wide range of parasites, including nematodes, trematodes, cestodes, protozoa, as well as ectoparasites of veterinary importance. Some of these parasites potentially pose significant public health concerns. Increased urbanization and the introduction of exotic species act as drivers for the transmission of zoonotic parasites through the environment. In addition, as part of the human diet, domestic animals can be a source of life-threatening parasitoses.

Awareness of wild and domestic animal-borne zoonotic parasitoses is essential for the control, prevention, and surveillance of these diseases. Therefore, this Special Issue focuses on significant advances in epidemiological and genetic diversity studies of parasites in wild and domestic animals, including both endoparasites and ectoparasites. Epidemiological studies include the etiology and surveillance of parasitic diseases using fecal or gross examination and immunological, molecular, or meta-analysis tools. Genetic diversity studies include genetic variants within parasite populations and genetic variants in response to environmental or host factors revealed by genome sequencing and bioinformatic analysis using cutting-edge tools.

We invite original research papers that improve our understanding of parasite epidemiology and genetic variants driven by climate change, anthelmintic treatment, and host immune responses. Areas of interest include the epidemiology and population genetics of parasites contributing to the better management and welfare of domestic and wild animals, as well as ectoparasites relevant to veterinary medicine, along with studies under the One Health concept aimed at preventing the transmission of parasites from animals to human beings.

Dr. Wei Liu
Guest Editor

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Keywords

  • molecular epidemiology
  • infection
  • genetic polymorphism
  • nematode
  • tapeworm
  • trematode
  • protozoon

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Published Papers (1 paper)

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30 pages, 19588 KB  
Systematic Review
Reproductive Impacts of African Animal Trypanosomiasis in West African Dwarf Goats—Mechanistic Insights into Trypanotolerance Survival–Fertility Trade-Off: A Systematic Review
by Ugochinyere J. Njoga, Emmanuel O. Njoga, Izuchukwu S. Ochiogu, John I. Ihedioha and James W. Oguttu
Vet. Sci. 2026, 13(6), 535; https://doi.org/10.3390/vetsci13060535 - 29 May 2026
Viewed by 556
Abstract
Trypanosomiasis remains a major constraint to small ruminant production in sub-Saharan Africa, particularly among smallholder farmers. Although WAD goats are considered trypanotolerant because of their relatively low mortality during chronic infection, recent findings show that this survival is at the expense of reproductive [...] Read more.
Trypanosomiasis remains a major constraint to small ruminant production in sub-Saharan Africa, particularly among smallholder farmers. Although WAD goats are considered trypanotolerant because of their relatively low mortality during chronic infection, recent findings show that this survival is at the expense of reproductive efficiency. To back up this claim with scientific evidence, this review followed PRISMA guidelines and systematically searched PubMed, Scopus, and Web of Science for important studies published between January 1980 and February 2026. Search terms included African animal trypanosomiasis, Trypanosoma spp., WAD goats, reproductive dysfunction, trypanotolerance, oxidative stress, and hypothalamic–pituitary–gonadal axis. Of the 1245 retrieved articles, 14 met the inclusion criteria. Evidence from the included studies indicates that chronic trypanosome infection disrupts reproduction through interconnected mechanisms involving systemic inflammation, oxidative stress, endocrine imbalance, and impaired gonadal function. Available evidence suggests that T. brucei is frequently associated with ovarian dysfunction and embryonic loss, whereas T. congolense has been linked in some studies to uterine pathology and gestational reproductive disturbances. Female goats commonly exhibit irregular oestrous cycles, embryonic loss, and prolonged kidding intervals, while males develop impaired spermatogenesis, abnormal sperm morphology, and reduced testosterone levels. These reproductive impairments reduce kid output, milk yield, herd productivity, and household livelihood resilience. Integrated control strategies combining vector control, targeted chemotherapy, nutritional support, and selective breeding are essential for preserving both fertility and survival in trypanosome-endemic areas. Full article
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