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Patitucci L.D.,CONICET | Patitucci L.D.,Museo Argentino de Ciencias Naturales Bernardino Rivadavia | Mulieri P.R.,CONICET | Mulieri P.R.,Museo Argentino de Ciencias Naturales Bernardino Rivadavia | And 4 more authors.
Zootaxa | Year: 2015

The type material of species of Calyptratae Diptera belonging to Anthomyiidae, Calliphoridae, Fanniidae, Muscidae, Sarcophagidae, and Tachinidae, housed in the collections of non-traditional institutions in Argentina were examined. These collections were included in the recently created "Sistema Nacional de Datos Biológicos" (National Biological Data System). We examined four collections: "Administración Nacional de Laboratorios e Institutos de Salud 'Dr. Carlos G. Malbrán'" (ANLIS), "Instituto Nacional de Tecnología Agropecuaria, Castelar, Buenos Aires" (INTA), "Instituto Argentino de Investigaciones de las Zonas Áridas" (IADIZA); and "Fundación Félix de Azara" (CFA). Comparison of the original descriptions of these species with the label information revealed the existence of 24 holotypes, 5 lectotypes, 11 syntypes, and 441 paratypes/paralectotypes. Complete information is given for each type, including reference to the original description, label data, and preservation condition. Copyright © 2015 Magnolia Press. Source

Periago M.E.,National University of Cordoba | Periago M.E.,Instituto Argentino Of Investigaciones Of Zonas Aridas Iadiza | Chillo V.,CONICET | Ojeda R.A.,CONICET
Mammal Review | Year: 2015

The Gran Chaco in central South America is a major savanna woodland ecosystem. Accelerated changes in land use within it have resulted in a complex matrix of areas with varying capabilities for sustaining wildlife. Furthermore, hunting and habitat loss increasingly threaten the functional diversity of mammals found there. We assess the potential consequences of the loss of large and medium-sized native mammalian herbivores and frugivores on Chacoan ecosystem functioning, focusing on their role and conservation status in the Argentine Chaco. Our review shows that almost 50% of the largest frugivorous mammals present in the Argentine Chaco are threatened and exhibit declining population trends. Their decline may cause changes in vegetation composition, since almost 53% of the Chacoan woody plant species display endozoochory as their seed dispersal mechanism. Moreover, 80% of the largest herbivores are threatened, which may also lead to a compositional change in savanna vegetation. There is a significant void of information regarding the population status of native mammals in the Argentine Chaco and the functional roles they play in the ecosystem, and there are few studies examining the consequences of their potential loss. We express our concern with the major changes taking place in this subtropical region due to significant and rapid habitat transformations and emphasize the important role of ecological functionality in restoration and conservation planning in the Gran Chaco. © 2014 The Mammal Society and John Wiley & Sons Ltd. Source

Chillo V.,Instituto Argentino Of Investigaciones Of Zonas Aridas Iadiza | Chillo V.,University of Guelph | Ojeda R.A.,Instituto Argentino Of Investigaciones Of Zonas Aridas Iadiza | Anand M.,University of Guelph | Reynolds J.F.,Duke University
Ecological Indicators | Year: 2015

In drylands livestock grazing is the main production activity, but overgrazing due to mismanagement is a major cause of biodiversity loss. Continuous grazing around water sources generates a radial gradient of grazing intensity called the piosphere. The ecological sustainability of this system is questionable and alternative management needs to be evaluated. We apply simple indicators of species response to grazing gradients, and we propose a novel methodological approach to compare community response to grazing gradients (double reciprocal analysis). We assessed degradation gradients of biodiversity under different management strategies in semiarid rangelands of the Monte desert (Argentina) by analyzing changes in vegetation, ants and small mammal richness and diversity, and variation due to seasonality. At the species level, we determined the trend in abundance of each species along the gradient, and the potential cross-taxa surrogacy. At the community level, the new methodological consists of assessing the magnitude of biodiversity degradation along different piospheres by comparing the slopes of linear functions obtained by the double reciprocal analysis. We found that most species showed a decreasing trend along the gradient under continuous grazing; while under rotational grazing fewer species showed a decreasing trend, and a neutral trend (no change in the abundance along the gradient of grazing intensity) was the most common. We found that vegetation cannot be used as a surrogacy taxon of animal response. Moreover, weak cross-taxa surrogacy was found only for animal assemblages during the wet season. The double reciprocal analysis allowed for comparison of multi-taxa response under different seasons and management types. By its application, we found that constrains in precipitation interacted with disturbance by increasing the negative effect of grazing on vegetation, but not on animal assemblages. Continuous grazing causes biodiversity loss in all situations. Rotational grazing prevents the occurrence of vegetation degradation and maintains higher levels of animal diversity, acting as an opportunity for biodiversity conservation under current scenarios of land use extensification. Our approach highlights the importance of considering multi-taxa and intrinsic variability in the analysis, and should be of value to managers concerned with biodiversity conservation. © 2014, Elsevier Ltd. All rights reserved. Source

Remedios-De Leon M.,University of the Republic of Uruguay | Aballay F.H.,Instituto Argentino Of Investigaciones Of Zonas Aridas Iadiza | Cecilia Dominguez M.,Instituto Argentino Of Investigaciones Of Zonas Aridas Iadiza | Gonzalez-Vainer P.,University of the Republic of Uruguay
Check List | Year: 2015

Fannia fusconotata (Rondani, 1868) and Fannia sanihue Domínguez & Aballay, 2008 are recorded for the first time in Uruguay, extending the Neotropical distribution of these taxa eastward in South America. The specimens were collected using modified Malaise traps located above pig carcasses in Pando, Canelones, Uruguay, from February to April 2011. This contribution is a part of the first study to be undertaken into forensic entomology in Uruguay. © 2015 Check List and Authors. Source

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