This study aimed to provide an overview of the methodological approach used for the species determination of big cats. The molecular system described herein employs mitochondrial DNA control region (CR-mtDNA)-length polymorphism in combination with highly sensitive and precise capillary electrophoresis. We demonstrated that the described CR-mtDNA barcoding system can be utilized for species determination where the presence of biological material from big cats is expected or used as a confirmatory test alongside Sanger or massive parallel sequencing (MPS). We have also addressed the fact that species barcoding, when based on the analysis of mtDNA targets, can be biased by nuclear inserts of the mitochondrial genome (NUMTs). The CR-mtDNA barcoding system is suitable even for problematic and challenging samples, such as hair. CR-mtDNA-length polymorphisms can also distinguish hybrids from pure breeds.
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http://dx.doi.org/10.3390/life14040497 | DOI Listing |
Naturwissenschaften
January 2025
Training & Education), Advanced Institute for Wildlife Conservation (Research, Vandalur, Chennai, Tamil Nadu, India.
Eurybiomic big cats are facing significant threats from poaching, which is driven by recreation, taxidermy and wildlife trade. Species identification and age estimation are important for effective conservation management and enforcement of wildlife protection regulations. In this study, we present novel comprehensive morphometric methods for species identification and age estimation in leopards (Panthera pardus fusca) using canine and claw, the major trade articles.
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December 2024
College of Big Data, Yunnan Agricultural University, Kunming, China.
Introduction: Monitoring the heart rate (HR) of pets is challenging when contact with a conscious pet is inconvenient, difficult, injurious, distressing, or dangerous for veterinarians or pet owners. However, few established, simple, and non-invasive techniques for HR measurement in pets exist.
Methods: To address this gap, we propose a novel, contactless approach for HR monitoring in pet dogs and cats, utilizing facial videos and imaging photoplethysmography (iPPG).
PLoS One
November 2024
Department of Conservation Biology, Estación Biológica de Doñana CSIC, Seville, Spain.
Livestock predation constitutes the primary source of conflict between humans and large carnivores. Moreover, human factors, such as attitudes and emotions, can affect people's tolerance towards carnivores, exacerbating the conflict. Such conflicts often lead to retaliatory killing of carnivores, which not only poses significant threats to species conservation but also to ecosystem functioning and services.
View Article and Find Full Text PDFAnimals (Basel)
September 2024
Department of Anatomy and Comparative Pathological Anatomy, Veterinary Faculty, University of Murcia, 30100 Murcia, Spain.
This study aims to develop three-dimensional printing models of the bony nasal cavity and paranasal sinuses of big and domestic cats using reconstructed computed tomographic images. This work included an exhaustive study of the osseous nasal anatomy of the domestic cat carried out through dissections, bone trepanations and sectional anatomy. With the use of OsiriX viewer, the DICOM images were postprocessed to obtaining maximum-intensity projection and volume-rendering reconstructions, which allowed for the visualization of the nasal cavity structures and the paranasal sinuses, providing an improvement in the future anatomical studies and diagnosis of pathologies.
View Article and Find Full Text PDFPLoS One
May 2024
Institute of Zoology, Zoological Society of London, London, United Kingdom.
Unsustainable trade in big cats affects all species in the genus, Panthera, and is one of the foremost threats to their conservation. To provide further insight into the impact of policy interventions intended to address this issue, we examine the case study of the Republic of Korea (South Korea), which in the early 1990s was one of the world's largest importers of tiger (Panthera tigris) bone and a major manufacturer of tiger-derived medicinal products. In 1993, South Korea became a Party to the Convention on International Trade in Endangered Species (CITES) and introduced a ban on commercial trade in CITES Appendix I-listed big cats a year later.
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