Results 41 to 50 of about 1,125 (165)
Sarcocystis spp. of New and Old World Camelids: Ancient Origin, Present Challenges
PathogensSarcocystis spp. are coccidian protozoans belonging to the Apicomplexa phylum. As with other members of this phylum, they are obligate intracellular parasites with complex cellular machinery for the invasion of host cells. Sarcocystis spp.
Sarah N. Wieser +7 more
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The Journal of Latin American and Caribbean Anthropology, Volume 31, Issue 1, March 2026.ABSTRACT Pastoralism worldwide faces a complex landscape of increased pressures and exclusion. Beyond ecological and economic challenges, pastoralists suffer eroding cultural identity, limited generational renewal, and political marginalization. Yet pastoral livelihoods are increasingly recognized as stewards of sustainable futures and amongst the best
Greta Semplici, Pablo Manzano
wiley +1 more source
Advances in the Development of Lipid Nanoparticles for mRNA Delivery
Small Structures, Volume 7, Issue 2, February 2026.This review provides an integrated overview of mRNA–lipid nanoparticle (LNP) design, including lipid composition, scalable manufacturing, and structure–activity relationships. We highlight strategies for targeted delivery, physicochemical tuning, and high‐throughput screening such as DNA barcoding.
Xing Wang +6 more
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Parasites & Vectors, 2018 Background Gastrointestinal nematodes (GINs) frequently infect South American camelids (alpacas and llamas) and cause economic losses due to reduced production of fiber, meat and/or leather.
Mohammed H. Rashid +2 more
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Challenges and opportunities in mitigating sarcoptic mange in wild South American camelids
The Journal of Wildlife Management, Volume 90, Issue 1, January 2026.Wild South American camelids—vicuña and guanaco—face threats from sarcoptic mange, a contagious skin disease linked to severe population declines. Despite its impact, major gaps remain in understanding disease dynamics. This review summarizes current knowledge, identifies key data and management gaps, and outlines urgent actions for effective ...
Alynn M. Martin +13 more
wiley +1 more source
Global Ecology and Biogeography, Volume 35, Issue 1, January 2026.ABSTRACT Aim Large herbivores play key roles in ecosystems by promoting plant diversity, dispersing seeds, regulating nutrient cycling, and shaping vegetation structure. Since the Late Pleistocene, their declines have led to profound ecosystem changes. While often viewed as problematic, alien herbivores may partly compensate for these losses; yet their
Ming Ni +5 more
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ultrasonography of kidney and spleen in clinically healthy llamas and alpacas
Acta Veterinaria Scandinavica, 2021 Background The ultrasonographic examination technique is a well-established, non-invasive diagnostic tool for diverse conditions in humans and different animal species.
Cassandra Eibl, Sonja Franz
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International Journal of Zoology, Volume 2026, Issue 1, 2026.This study explores the scope of sexual and age‐related discrimination in the hemipelvises of Lama guanicoe guanicoe (Müller 1776), a species that lacks postcranial secondary sexual characteristics. Using two‐dimensional geometric morphometric techniques, changes in shape and size of the coxae bones from 50 individuals of both sexes and varying ...
Anahí Hernández +3 more
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Effect of Cooling and Freezing on Llama (Lama glama) Sperm Ultrastructure
Frontiers in Veterinary Science, 2020 Semen cryopreservation in South American camelids has a low efficiency. Post-thaw viability of sperm is low, and poor results are obtained when artificial insemination is performed with cryopreserved semen, impeding advances both in accelerated genetic ...
Renato Zampini +10 more
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Berliner und Münchener Tierärztliche Wochenschrift, 2022 South American camelids (SAC) are increasingly popular in Germany. Although frequently in close contact to livestock and humans, data on the prevalence of epizootic and zoonotic bacteria and of bacteria exhibiting antimicrobial resistance (AMR) in SAC is
B González-Santamarina +7 more
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