Faculdade de Medicina Veterinária, Universidade Estadual Paulista (UNESP), Araçatuba 16050-680, SP, Brazil.
Published: August 2024
AI Article Synopsis
Article Abstract
Although previous studies have characterized the helminth fauna of wild boars kept in captivity in Brazil, records on these helminths in free-ranging animals are still scarce. In view of this, we aimed in our work to investigate the occurrence and morphological and morphometric characteristics of gastrointestinal helminths in wild Sus scrofa from the northwest region of the State of São Paulo, Brazil. The digestive systems of 10 animals (5 males and 5 females of different ages) were used in this study. Each anatomical segment was washed and sieved under running water, and the helminths were separated and identified using light and scanning electron microscopy, according to their morphological characteristics. A total of 2750 (1152 males and 1598 females) nematode specimens were collected from the small intestine of these wild boars, and all of them presented the morphological characteristics of . However, one characteristic is of particular interest because it has not yet been reported in the literature: a marked asymmetry between the lobes and their respective rays of the copulatory bursa, with the left one being larger than the right one. In this research, we identified the presence of in all the examined free-ranging wild boars and reported for the first time in the literature the asymmetry in the copulatory bursa.
Population density is a valuable metric used to manage wildlife populations. In the Russian Far East, managers use the Formozov- Malyushev-Pereleshin (FMP) snow tracking method to estimate densities of ungulates for hunting management. The FMP also informs Amur tiger () conservation since estimates of prey density and biomass help inform conservation interventions.
Body mass index (BMI) can serve as a reasonable indicator of overall body fat content in pigs. This study aimed to identify underlying variants and candidate genes associated with BMI in Yunong-black pigs. A single-step genome-wide association analysis (GWAS) was performed on 1405 BMI records and 924 Yunong-black pigs genotyped using a 50 K SNP Chip.
Using a prion amplification assay, we identified prions in tissues from wild pigs (Sus scrofa) living in areas of the United States with variable chronic wasting disease (CWD) epidemiology. Our findings indicate that scavenging swine could play a role in disseminating CWD and could therefore influence its epidemiology, geographic distribution, and interspecies spread.
African swine fever (ASF) is currently the largest threat to world pork production. The complexity of the virus, its persistence in the environment, the particular immune response it elicits without significant neutralising antibodies, its capacity for transmission by several routes and the presentation of different clinical forms, from acute with high mortality to attenuated to chronic, all pose significant challenges. This article provides an overview of the epidemiological situation of ASF across five continents, the role of wild boar in virus transmission, the development of new immunological tools that aim to enhance protection against this complicated virus in wild boar, and the protection studies that are under way.
African swine fever (ASF) has become a major focus of research after spreading to four continents besides Africa. In its natural African ecosystem, the causative ASF virus (ASFV) is maintained by indigenous Suidae as natural reservoirs and hard tick vectors. However, in Sus scrofa domesticated breeds and wild boar, ASFV causes devastating disease, with mortalities reaching over 90%.
