Trophic preferences in an assemblage of mammal herbivores from Andean Puna (Northern Chile)

Tirado, Carlos; Cortés, Arturo; Miranda-Urbina, E.; Carretero, Miguel Á.

doi:10.1016/j.jaridenv.2011.12.003

Cited by 12 publications

(19 citation statements)

References 33 publications

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“…As reported for other areas (Cortés et al 2006, Cassini et al 2009, Puig et al 2011, Tirado et al 2012, grasses were the main component of V. vicugna and L. guanicoe diet, which were also preferred. The fact that both species consumed high amount of grasses is clearly associated with the different adaptations for digesting fi ber of camelids such as: 1) stomach compartments, which allow them to increase fermentation, water and salts absorption (San Martín 1987), 2) their long times of retention compared to other artiodactyls (Sponheimer et al 2003), 3) their ability to reduce urea excretion at a renal level (Engelhardt & Holler 1982).…”

Section: Botanical Composition Of the Dietsupporting

confidence: 62%

“…Studies of the trophic ecology of V. vicugna are scarce in Chile (Tirado et al 2012), although there is comparative information on this topic for populations from other countries (Cajal 1989, Aguilar et al 1995, Borgnia et al 2008, Cassini et al 2009). V. vicugna has been considered a strict grazer (Ménard 1984, Aguilar et al 1999, whereas other studies also report their consumption of shrubs (Aguilar et al 1995, Cajal 1989, Borgnia et al 2008, Borgnia et al 2010, Tirado et al 2012. On the other hand, L. guanicoe has a larger body mass (90 -140 kg).…”

Section: Study Speciesmentioning

confidence: 99%

“…From a feces pool made from each sample, a microhistological preparation was composed through Williams's technique (Williams 1962, Dizeo de Strittmatter 1984. This method was repeated for each of the samples collected, obtaining a total of 10 preparations per species (Cortés et al 2003, Cortés et al 2006, Tirado et al 2012.…”

Section: Study Speciesmentioning

confidence: 99%

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Does the presence of livestock alter the trophic behaviour of sympatric populations of wild camelids Vicugna vicugna Molina 1782 and Lama guanicoe Müller 1976 (Artiodactyla: Camelidae)?: Evidence from Central Andes

Tirado

Cortés²,

Carretero

et al. 2016

Gayana (Concepc.)

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We described and compared the diets of two sympatric Andean camelids, during the humid season (austral summer) in a site of Northern Chile, in presence of domestic livestock. Results indicate that: 1) grasses and shrubs are the main component in the diet of both camelids, 2) shrubs were more consumed by V. vicugna; 3) V. vicugna and L. guanicoe used the same trophic resources but in different proportions; 4) in mountain environments, wetlands exploitation by wild camelids seems restricted by domestic cattle, which would cause the displacement of Vicuñas and Guanacos to suboptimal habitat for feeding. KEYWORDS:Guanaco, Vicuña, livestock, diet, herbivory. RESUMENDescribimos y comparamos la dieta de dos poblaciones simpátricas de camélidos silvestres, durante la estación húmeda (verano) en un sector del norte de Chile en presencia de ganado domesticado. Nuestros resultados indican que: 1) gramíneas y arbustos son el principal componente de la dieta de ambos camélidos; 2) arbustos fueron consumidos principalmente por V. vicugna; 3) V. vicugna and L. guanicoe utilizan los mismos recursos trófi cos pero en diferentes proporciones; 4) en ambientes de montaña, el uso de vegas altoandinas por parte de camélidos silvestres estaría siendo restringido por la presencia de ganado domesticado, el cual provocaría el desplazamiento de ambos camélidos a zonas subóptimas de alimentación.

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Section: Botanical Composition Of the Dietsupporting

confidence: 62%

Section: Study Speciesmentioning

confidence: 99%

See 1 more Smart Citation

Does the presence of livestock alter the trophic behaviour of sympatric populations of wild camelids Vicugna vicugna Molina 1782 and Lama guanicoe Müller 1976 (Artiodactyla: Camelidae)?: Evidence from Central Andes

Tirado

Cortés²,

Carretero

et al. 2016

Gayana (Concepc.)

Self Cite

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“…Jiménez 1987Jiménez , 1989Jiménez , 1994Jiménez , 1995Jiménez , 1996Spotorno et al 1998;Cortés et al 2002;Spotorno et al 2004a,b;Valladares 2012;Valladares et al 2012;Tirado et al 2012) and technical and public reports. In other hand, we took fi eld data to assess the vegetation associated with the colonies of chinchillas, as well as the sympatric species of rodents and predators (Valladares et al 2014).…”

Section: Methodsmentioning

confidence: 99%

“…Studies conducted during the last few decades have been restricted to ecophysiology (Cortés et al 2000;Ostojic et al 2002;Cortés et al 2003), diet (Cortés et al 2002;Tirado et al 2012) and distribution (Valladares 2012;Valladares et al 2012;Valladares et al 2014). There are little information about social behavior, predators, competitive species and null information about temporal abundance.…”

Section: Introductionmentioning

confidence: 99%

Natural history of the Chinchilla genus (Bennett 1829): Considerations of their ecology, taxonomy and conservation status

2014

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Over the last years there has been new and valuable information in both wild chinchillas, however this is still insuffi cient for effective protection. In this paper we review some fundamental aspects of its natural history, synthesizing and delivering new information about their ecology, taxonomy and conservation status, based on the review of available literature, and fi eld data collection. In relation to their ecology we have been identifi ed new colonies of both species, for scientifi c research as well as environmental technical reports. For most of these colonies we identifi ed vegetation to which they are associated, predators and other sympatric rodent species. The taxonomy of these species is controversial. A proposal was submitted to ICZN in 2003, and the recommendations were to describe a neotype for genus and species, but the original specimens described by Bennett (1829), Lichtenstein (1830) and Waterhouse (1844) are in museums from Europe and should be considered as syntypes. Conservation status of both species is critically endangered because most colonies are threatened by mining exploitation. Therefore, it is essential to explore new regions to identify new colonies and compare them with modern methods such as molecular markers. Finally, with this information we argue the need to develop a conservation programs for both species; it should consider critical areas of their biology, such as ecology, genetics and reproduction. KEYWORDS:Chinchilla, conservation plans, critical endangered, distribution, endemism, new colonies. RESUMENEn los últimos años se ha generado nueva y valiosa información de las dos especies silvestres de chinchillas; sin embargo ésta sigue siendo insufi ciente para una protección efectiva. En este trabajo hacemos una revisión de algunos aspectos fundamentales de su historia natural, sintetizando y entregando nuevos antecedentes de su ecología, taxonomía y estado de conservación, en base a la revisión de la literatura disponible, y toma de datos en el campo. En relación a su ecología, hemos identifi cado nuevas colonias de ambas especies, tanto por investigación científi ca como por reportes técnicos ambientales. Para la mayoría de esas colonias se ha identifi cado la vegetación a la que están asociadas, depredadores y otras especies de roedores simpátridos. La taxonomía de ambas especies ha sido controversial. Una propuesta fue sometida a la ICZN en el 2003 y las recomendaciones fueron describir un neotipo para el género y ambas especies; sin embargo, los especímenes originales descritos por Bennett (1829), Lichtenstein (1830) y Waterhouse (1844) existen en museos de Europa y deben ser considerados como los respectivos sintipos. Finalmente, el estado de conservación de estas especies ha sido catalogado como críticamente en peligro tanto por instituciones nacionales como internacionales, esto debido a que la mayoría de las colonias son pequeñas, fragmentadas y aisladas, sin embargo, ahora la mayor amenaza es la relación geográfi ca de las nuevas colonias con áreas de e...

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Tracing the Paleobiology of Paedotherium and Tremacyllus (Pachyrukhinae, Notoungulata), the Latest Sciuromorph South American Native Ungulates – Part I: Snout and Masticatory Apparatus

et al. 2020

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Trophic preferences in an assemblage of mammal herbivores from Andean Puna (Northern Chile)

Cited by 12 publications

References 33 publications

Does the presence of livestock alter the trophic behaviour of sympatric populations of wild camelids Vicugna vicugna Molina 1782 and Lama guanicoe Müller 1976 (Artiodactyla: Camelidae)?: Evidence from Central Andes

Does the presence of livestock alter the trophic behaviour of sympatric populations of wild camelids Vicugna vicugna Molina 1782 and Lama guanicoe Müller 1976 (Artiodactyla: Camelidae)?: Evidence from Central Andes

Natural history of the Chinchilla genus (Bennett 1829): Considerations of their ecology, taxonomy and conservation status

Tracing the Paleobiology of Paedotherium and Tremacyllus (Pachyrukhinae, Notoungulata), the Latest Sciuromorph South American Native Ungulates – Part I: Snout and Masticatory Apparatus

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