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  • Miniatura
    Item type: Artículo ,
    Hunting and Faunal Consumption Among Herders of Northwestern Patagonia: A Zooarchaeological Perspective
    (Society of Ethnobiology, 2024-06)
    Otaola, Clara
    ;
    Wolverton, Steve
    ;
    Giardina, Miguel Angel
    ;
    Neme, Gustavo Adolfo
    ;
    Franchetti, Fernando Ricardo
    This article examines the dietary patterns of herders in central-western Argentina, known as puesteros (local herders). We investigate how changes in land use, urbanization, and hunting restrictions have affected traditional puestero herding practices and the contributions of wild and domesticated animals to their diets. The study focuses on two research questions: (1) Has the growth of urban economies and transportation infrastructure in central-western Argentina during the past several decades influenced puestero domesticate and wild animal meat consumption? (2) Does the consumption of large domesticates (e.g., beef from cattle) today decrease when the distance to cities increases and connectivity with markets decreases? We examine the differences in faunal assemblages between high-elevation summer puestos and low-elevation permanent puestos. We expected that puesteros in more remote areas would rely more on wild animals as a food source. However, the results showed that wild faunas were more common in permanent puestos compared to comparatively remote, summer puestos. This can be explained by the different activities carried out in each puesto and the animal biodiversity of each ecoregion. The study also highlights the impact of land use changes and conservation policies on puesteros. New employment opportunities, rural–urban migration, and changes in land ownership have influenced ranching and pastoralism practices as well. We emphasize the need to understand the puestero lifestyle in a broader framework that considers economic, social, and political processes and the importance of zooarchaeology in this study, which provides a valuable tool for documenting and preserving aspects of puestero culture.
  • Miniatura
    Item type: Artículo ,
    Infestation of Lithodes santolla by Eremitione tuberculata: spatial and temporal variations in parasite prevalence and effect on host growth
    (Inter-Research, 2024-06)
    Colombo, Julia Soledad
    ;
    Varisco, Martin Alejandro
    The southern king crab (SKC) Lithodes santolla is a crustacean parasitised by the bopyrid Eremitione tuberculata. This study aimed to analyse spatial and temporal variations in E. tuberculata prevalence in the juvenile SKC population of San Jorge Gulf (SJG) and adjacent waters (Argentine Patagonia), and evaluate the effects of the parasite on SKC juveniles to improve our understanding of its impact as a disease on SKC health condition. Moult increment and body weight were compared between parasitised and unparasitised individuals. The prevalence of E. tuberculata in SKC juveniles varied both spatially and temporally. In the south of SJG, the prevalence was 54.5% (n = 11). Temporal prevalence analysis revealed values lower than 17.4% in mid SJG during May and September 2015. No significant differences were observed in E. tuberculata prevalence between sexes or among seasons. Eremitione tuberculata had a negative effect on SKC growth (lower body dry mass, moult increment and relative increment rate) in parasitised individuals. We hypothesised that the higher prevalence of E. tuberculata in the south SJG could be attributed to the retention of parasite larvae and the presence of the frontal system in this part of the gulf. The temporal variations could reflect host mortality. Our results suggest that bopyrid infestation may have a more important role than previously believed in the dynamics of the SKC population in mid-Patagonia.
  • Miniatura
    Item type: Artículo ,
    Returning the dragon to its cave: the spinosaurid nature of the purported ornithopod materials from the ‘Middle’ Cretaceous Alcântara Formation, northeastern Brazil
    (Elsevier Science, 2024-06)
    Fabianelli, Maximiliano
    ;
    Juarez Valieri, Ruben Dario
    ;
    Lindoso, Rafael
    ;
    Meso, Jorge Gustavo
    ;
    Salinas, Guillermo
    Hemos llevado a cabo una reevaluación taxonómica de vértebras caudales de dinosaurios de la Formación Alcânta ra del Cenomaniano en el estado de Maranhão, noreste de Brasil. Estos elementos fueron descritos originalmente como pertenecientes al terópodo africano contemporáneo Sigilmassasaurus. Posteriormente, fueron reasignados como un ornitópodo grande similar a Ouranosaurus, un poco más antiguo, representando entonces la primera aparición de un hadrosauriforme basal en América del Sur. Aquí revisamos los materiales publicados más vérte bras caudales adicionales inéditas de la Formación Alcântara. Además, se realizaron comparaciones con terópodos espinosáuridos y ornitópodos hadrosauriformes para dilucidar su asignación taxonómica entre estos dos grupos de dinosaurios distantemente relacionados. Los rasgos anatómicos observados en las vértebras caudales, incluidos los centros con paredes laterales subrectangulares, la superficie ventral que presenta una depresión longitudinal, la base baja de los arcos neurales, una espina neural en forma de varilla y una apófisis transversal que no alcanza los bordes anterior y posterior del centro vertebral, entre otras características, permiten asignar los especíme nes a terópodos espinosáuridos, particularmente Spinosaurinae. El único espinosáurido nominal descrito para la Formación Alcântara es Oxalaia quilombensis, aunque su asignación a los especímenes aquí estudiados está excluida por la ausencia de elementos comparables y la existencia de múltiples morfotipos dentales en esta unidad litoestratigráfica, lo que sugiere una mayor diversidad de espinosáuridos. La asignación actual anula la evidencia de restos de ornitópodos en la Formación Alcântara y limita su registro en el noreste de América del Sur a huellas de depósitos cenomanianos.
  • Miniatura
    Item type: Artículo ,
    Buenos Aires Breast Cancer Symposium 2024: Bridging basic and clinical research in breast cancer
    (Fundación Revista Medicina, 2025-05)
    Abba, Martín Carlos
    ;
    Behbod, Fariba
    ;
    Ceppi, Paolo
    ;
    Chammas, Roger
    ;
    Robert Clarke
    The second edition of the Buenos Aires Breast Cancer Symposium (BA-BCS), the first to be held in person, took place from September 3rd to 6th, 2024, in Buenos Aires, Argentina. Nineteen scientists from Brazil, Canada, the United States, the United Kingdom, Denmark, Germany, and Spain, along with six Argentine experts, shared and discussed their recent findings with the audience. Young researchers had the opportunity to present their results through either mini-oral presentations or posters, facilitating oneon-one interactions and the potential for new collaborations. This article summarizes each talk presented at the symposium.
  • Miniatura
    Item type: Artículo ,
    Quantifying the enzootic leukosis virus threat: how prevalent is the natural infection in Crioulo Lageano cattle in southern Brazil?
    (Instituto Internacional de Ecología, 2025-02)
    Fonteque, G. V.
    ;
    Casa, M. S.
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    Ribeiro, G. S. N.
    ;
    Silva, Z.
    ;
    Vogel, C. I. G.
    Enzootic Bovine Leukosis (EBL), is infectious disease affecting especially older animals, although animals of all ages can be infected with the Bovine Leukemia Virus (BLV). Crioula Lageana is a locally adapted, rustic and long-lived bovine breed, important as a genetic resource. However, little is known about its health status, making it difficult to preserve the breed. In this sense, this study aims to assess the prevalence of EBL/BLV in different animal categories of Crioula Lageana cattle. Then, blood samples were collected from 308 animals from different categories: bulls, cows, heifers and male and female calves, whereby these animals were derived from six farms located in nuclei of in situ conservation for the Crioula Lageana breed in Planalto Serrano de Santa Catarina, Brazil and the blood samples were analyzed with hemogram, ELISA and PCR tests. There was a prevalence of 6.82% (21/308) for the ELISA test and 36.69% (113/308) for the PCR technique. There was no association between categories and natural infection or BLV positivity in PCR by the Chi-square test (P<0.05). Leukocytosis with lymphocytosis was observed in 11% (18/113) of PCR-positive animals. None of the evaluated animals presented bovine lymphosarcoma. We conclude that the BLV is present in all animal categories of the Crioula Lageana cattle, requiring the establishment of prevention and control measures to avoid the spread of the disease within herds.