Ecomorphological variations in the guanaco population of Patagonia (Argentina)

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This paper studies the body sizes of modern, continental and insular Patagonian (Argentina) Lama guanicoe populations based on the osteometric analysis of four forelimb bones (humerus, radio-ulnae, metacarpus and first phalanx). A sample of more than 100 individuals from the Provinces of Río Negro (...

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Autores principales:	L’Heureux, G. Lorena, Cornaglia Fernández, Jimena
Formato:	Artículo publishedVersion
Lenguaje:	Español
Publicado:	Instituto de Arqueología, Facultad de Filosofía y Letras, Universidad de Buenos Aires 2016
Materias:	Lama guanicoe Patagonia Body size Latitudinal variation Environmental variables Osteometry Tamaño corporal Variación latitudinal Variables ambientales Osteometría
Acceso en línea:	https://revistascientificas.filo.uba.ar/index.php/Arqueologia/article/view/3280 https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=arqueo&d=3280_oai
Aporte de:	Repositorio Digital de la Universidad de Buenos Aires (UBA) de Universidad de Buenos Aires

id	I28-R145-3280_oai
record_format	dspace
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-145
collection	Repositorio Digital de la Universidad de Buenos Aires (UBA)
language	Español
orig_language_str_mv	spa
topic	Lama guanicoe Patagonia Body size Latitudinal variation Environmental variables Osteometry Lama guanicoe Patagonia Tamaño corporal Variación latitudinal Variables ambientales Osteometría
spellingShingle	Lama guanicoe Patagonia Body size Latitudinal variation Environmental variables Osteometry Lama guanicoe Patagonia Tamaño corporal Variación latitudinal Variables ambientales Osteometría L’Heureux, G. Lorena Cornaglia Fernández, Jimena Ecomorphological variations in the guanaco population of Patagonia (Argentina)
topic_facet	Lama guanicoe Patagonia Body size Latitudinal variation Environmental variables Osteometry Lama guanicoe Patagonia Tamaño corporal Variación latitudinal Variables ambientales Osteometría
description	This paper studies the body sizes of modern, continental and insular Patagonian (Argentina) Lama guanicoe populations based on the osteometric analysis of four forelimb bones (humerus, radio-ulnae, metacarpus and first phalanx). A sample of more than 100 individuals from the Provinces of Río Negro (40°S), Santa Cruz (48-52°S) and Tierra del Fuego (53-54.5°S) were analyzed. The morphological size variations were evaluated considering the eco-environmental variables of temperature (maximum/ minimum), precipitation (summer, winter and annual), aerial net primary productivity (ANPP) and normalized difference vegetation index (NDVI). The data was analyzed using a number of uni and multivariate statistical models. The results show that, at a macro-regional scale, there was a clinal variation in the body sizes of guanaco populations (with individuals from Tierra del Fuego being significantly bigger than those from Santa Cruz, with the latter in turn being larger than those from Río Negro). All eco-environmental factors strongly associated with bone sizes (maximum temperature, ANPP, NDVI) co-vary, in the study region depending on latitude. The clinal pattern observed was, in principle, consistent with the expectations of Bergmann’s Rule. Also different environmental and biogeographic variables influenced the size patterns of modern Patagonian guanacos, thereby underscoring that the relationship between body size and environment is of a complex nature - and cannot be explained simply and directly by a single factor.
format	Artículo publishedVersion
author	L’Heureux, G. Lorena Cornaglia Fernández, Jimena
author_facet	L’Heureux, G. Lorena Cornaglia Fernández, Jimena
author_sort	L’Heureux, G. Lorena
title	Ecomorphological variations in the guanaco population of Patagonia (Argentina)
title_short	Ecomorphological variations in the guanaco population of Patagonia (Argentina)
title_full	Ecomorphological variations in the guanaco population of Patagonia (Argentina)
title_fullStr	Ecomorphological variations in the guanaco population of Patagonia (Argentina)
title_full_unstemmed	Ecomorphological variations in the guanaco population of Patagonia (Argentina)
title_sort	ecomorphological variations in the guanaco population of patagonia (argentina)
publisher	Instituto de Arqueología, Facultad de Filosofía y Letras, Universidad de Buenos Aires
publishDate	2016
url	https://revistascientificas.filo.uba.ar/index.php/Arqueologia/article/view/3280 https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=arqueo&d=3280_oai
work_keys_str_mv	AT lheureuxglorena ecomorphologicalvariationsintheguanacopopulationofpatagoniaargentina AT cornagliafernandezjimena ecomorphologicalvariationsintheguanacopopulationofpatagoniaargentina AT lheureuxglorena variacionesecomorfologicasdelaspoblacionesdeguanacodepatagoniaargentina AT cornagliafernandezjimena variacionesecomorfologicasdelaspoblacionesdeguanacodepatagoniaargentina
_version_	1851374608555442176
spelling	I28-R145-3280_oai2025-11-17 L’Heureux, G. Lorena Cornaglia Fernández, Jimena 2016-10-01 This paper studies the body sizes of modern, continental and insular Patagonian (Argentina) Lama guanicoe populations based on the osteometric analysis of four forelimb bones (humerus, radio-ulnae, metacarpus and first phalanx). A sample of more than 100 individuals from the Provinces of Río Negro (40°S), Santa Cruz (48-52°S) and Tierra del Fuego (53-54.5°S) were analyzed. The morphological size variations were evaluated considering the eco-environmental variables of temperature (maximum/ minimum), precipitation (summer, winter and annual), aerial net primary productivity (ANPP) and normalized difference vegetation index (NDVI). The data was analyzed using a number of uni and multivariate statistical models. The results show that, at a macro-regional scale, there was a clinal variation in the body sizes of guanaco populations (with individuals from Tierra del Fuego being significantly bigger than those from Santa Cruz, with the latter in turn being larger than those from Río Negro). All eco-environmental factors strongly associated with bone sizes (maximum temperature, ANPP, NDVI) co-vary, in the study region depending on latitude. The clinal pattern observed was, in principle, consistent with the expectations of Bergmann’s Rule. Also different environmental and biogeographic variables influenced the size patterns of modern Patagonian guanacos, thereby underscoring that the relationship between body size and environment is of a complex nature - and cannot be explained simply and directly by a single factor. Este trabajo estudia los tamaños corporales de las poblaciones modernas de Lama guanicoe de Patagonia continental e insular (Argentina), a partir del análisis osteométrico de cuatro huesos largos delanteros (húmero, radiocúbito, metacarpo y primera falange). Se analizó una muestra de más de 100 individuos procedentes de las provincias de Río Negro (40°S), Santa Cruz (48-52°S) y Tierra del Fuego (53-54.5°S). Las variaciones morfológicas de los tamaños se evaluaron en función de las variables ecoambientales de: temperatura (máxima/mínima), precipitación (estival, invernal y anual), productividad primaria neta aérea (PPNA) e índice de vegetación diferencial normalizado (NDVI). Los datos fueron procesados mediante diferentes análisis uni y multivariados. Los resultados demostraron que, en una escala macroregional, se registra un gradiente clinal de los tamaños corporales de las poblaciones de guanacos (los individuos de Tierra del Fuego son significativamente más grandes que los de Santa Cruz y éstos más grandes que los de Río Negro). Todos los factores ecoambientales que se asocian fuertemente con los tamaños óseos (temperatura máxima, PPNA, NDVI) covarían en la región de estudio con la latitud. El patrón clinal observado es, en principio, consistente con las expectativas derivadas de la Regla de Bergmann. Igualmente las diferentes variables ambientales y biogeográficas que influyen sobre los patrones de los tamaños de los guanacos modernos de Patagonia, exponen que la relación entre el tamaño corporal y el ambiente es de naturaleza compleja y no se puede explicar de forma simple y directa por un solo factor. application/pdf https://revistascientificas.filo.uba.ar/index.php/Arqueologia/article/view/3280 10.34096/arqueologia.t22.n0.3280 spa Instituto de Arqueología, Facultad de Filosofía y Letras, Universidad de Buenos Aires https://revistascientificas.filo.uba.ar/index.php/Arqueologia/article/view/3280/3020 Arqueología; Vol. 22 No. 3 (2016): September-December; 125-144 Arqueología; Vol. 22 Núm. 3 (2016): septiembre-diciembre; 125-144 1853-8126 0327-5159 Lama guanicoe Patagonia Body size Latitudinal variation Environmental variables Osteometry Lama guanicoe Patagonia Tamaño corporal Variación latitudinal Variables ambientales Osteometría Ecomorphological variations in the guanaco population of Patagonia (Argentina) Variaciones ecomorfológicas de las poblaciones de guanaco de Patagonia (Argentina) info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=arqueo&d=3280_oai

Ecomorphological variations in the guanaco population of Patagonia (Argentina)

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