Results 11 to 20 of about 2,586 (170)

Behavioural Indicators of Intra- and Inter-Specific Competition: Sheep Co-Grazing with Guanaco in the Patagonian Steppe [PDF]

Animals, 2021
In extensive livestock production, high densities may inhibit regulation processes, maintaining high levels of intraspecific competition over time. During competition, individuals typically modify their behaviours, particularly feeding and bite rates ...
Tomás Fernández, Alex Lancaster, Claudio A. Moraga, Sergio Radic-Schilling, Achaz von Hardenberg, Paulo Corti   +5 more
doaj   +4 more sources

Dental Microwear Evidence of Holocene Dietary Variability in the Argentinian Pampas and Paraná Delta [PDF]

American Journal of Biological Anthropology, Volume 191, Issue 1, September 2026.
ABSTRACT Objectives This study explores the subsistence strategies of Middle‐to‐Late Holocene human populations in the Argentinean Pampas and Paraná River Delta by analyzing dental microwear patterns. Materials and Methods We examined occlusal molar microwear textures of individuals from the Middle and Late Holocene recovered from 12 archaeological ...
Maria Rita Guedes Carvalho, Pablo G. Messineo, María Agustina Ramos van Raap, Gustavo Flensborg, Gustavo Martínez, Nahuel A. Scheifler, Mariela E. Gonzalez, María Clara Álvarez, Cristian A. Kaufmann, Mariano Bonomo, Clara Scabuzzo, Gustavo G. Politis, Sireen El Zaatari, Katerina Harvati   +13 more
wiley   +2 more sources

Prevalence study of Echinococcus granulosus in guanaco (Lama guanicoe) from the Chilean Patagonia unexpectedly reveals the southernmost limit of Taenia omissa [PDF]

Parasitology
This study presents the first detection of Taenia omissa metacestodes in guanaco (Lama guanicoe) within the Chilean Patagonia, marking the southernmost record of natural infection in an intermediate host on the continent.
Cristian A. Alvarez Rojas, Juan Francisco Alvarez, Juliana Iglesias, Anson V. Koehler, Cristian Bonacic   +4 more
doaj   +2 more sources

Conflict between Farmers and Guanacos (Lama guanicoe cacsilensis): Field Surveys, Remote Sensing, and Interviews Provide Information for Conservation of a Critically Endangered Species in Southern Peru [PDF]

Animals
The Peruvian guanaco (Lama guanicoe cacsilensis) is classified as being “in critical danger of extinction” by the government. In this study, we evaluate how the conflict between farmers and guanacos in the Susapaya and Estique Districts, Tacna Department
Hugo Castillo-Doloriert, Daniela Velasquez, Yumi Matsuno, Domingo Hoces, Jane C. Wheeler   +4 more
doaj   +2 more sources

Genome-wide scan for runs of homozygosity in South American Camelids [PDF]

BMC Genomics, 2023
Background Alpaca (Vicugna pacos), llama (Lama glama), vicugna (Vicugna vicugna) and guanaco (Lama guanicoe), are the camelid species distributed over the Andean high-altitude grasslands, the Altiplano, and the Patagonian arid steppes.
Stefano Pallotti, Matteo Picciolini, Marco Antonini, Carlo Renieri, Valerio Napolioni   +4 more
doaj   +2 more sources

Seroprevalence of Neospora caninum in Camelids of the New and Old World: A Global Systematic Review and Meta‐Analysis [PDF]

Veterinary Medicine and Science, Volume 12, Issue 3, May 2026.
Based on the present systematic review and meta‑analysis, the pooled prevalence of N. caninum in camelids was 10% (95% CI: 7%–12%) with significant heterogeneity (I2 = 93.75%, p < 0.0001). The highest rate was detected in Old World camelids, 14% (95% CI: 10%–19%), indicating that this group is more susceptible to N. caninum exposure.
Nashmin Mohemmi, Seyed Ahmad Karamati, Ronak Miladi, Mohammad Taghi Khodayari, Helia Bashiri, Reza Faraji, Shahab Falahi, Somayeh Jalilian, Arezoo Bozorgomid, Yazdan Hamzavi   +9 more
wiley   +2 more sources

Sarcoptic mange in a guanaco (Lama guanicoe) of northwestern Argentina: Clinical, histopathological and molecular studies [PDF]

International Journal for Parasitology: Parasites and Wildlife
Sarcoptic mange, caused by the mite Sarcoptes scabiei, is a highly contagious and potentially fatal skin disease that affects a wide range of mammals, including South American Camelids (SAC).
Fabiana E. Sosa, Melina Anello, Hebe del Valle Ferreyra, Diego M. Medina, Juan F. Micheloud, Hugo M. Borsetti, Nancy Hernández, Mónica Florin-Christensen, Sandra R. Romero   +8 more
doaj   +2 more sources

Molecular analysis of Sarcoptes scabiei infecting wild and domestic South American camelids in Argentina [PDF]

Parasitology
Sarcoptic mange, caused by the Sarcoptes scabiei mite, is a highly transmissible skin condition affecting many mammalian species worldwide. South American camelids (SAC) have the highest reported prevalence of mange in South America, causing economic ...
Melina Anello, Fabiana Sosa, Hebe Ferreyra, Rebeca Lobo Allende, Mariana Mastromatey, Marcela Uhart, Sandra Romero, Mónica Florin-Christensen, Barbara Moroni, Anna Rita Molinar, Luca Rossi, Florencia Di Rocco   +11 more
doaj   +2 more sources

Changes in foraging behaviour suggest competition between wild and domestic ungulates: Guanaco and domestic sheep in southern Patagonia [PDF]

, 2022
Previous attempts to address the presence of interspecific competition between domestic livestock and wild ungulates have focused largely on habitat or dietary overlaps.
T. Fernández, Hardenberg, A., P. Corti, Fernández, T., Radic Schilling, Sergio Javier, Moraga, C. A., Corti, P., C. A. Moraga, A. von Hardenberg, von Hardenberg, A., Radic‐Schilling, S., Lancaster, A., A. Lancaster, S. Radic‐Schilling   +13 more
core   +2 more sources

Spatial and seasonal dynamic of abundance and distribution of guanaco and livestock: insights from using density surface and null models. [PDF]

PLoS ONE, 2014
Monitoring species abundance and distribution is a prerequisite when assessing species status and population viability, a difficult task to achieve for large herbivores at ecologically meaningful scales.
Natalia M Schroeder, Silvia D Matteucci, Pablo G Moreno, Pablo Gregorio, Ramiro Ovejero, Paula Taraborelli, Pablo D Carmanchahi   +6 more
doaj   +1 more source