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Mostrando ítems 1-20 de 515
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13C‐labeling shows the effect of hierarchy on the carbon gain of individuals and functional groups in dense field stands
(Ecological Society of America, 2012-01)Measurements of resource capture by individuals, species, or functional groups coexisting in field stands improve our ability to investigate the ecophysiological basis of plant competition. But methodological and technical ... -
A comparison of two in vitro bioassays to detect resistance of the cattle tick Rhipicephalus microplus to fipronil
(Elsevier, 2023-01)The aim of this work is to compare the sensitivity of two in vitro bioassays to detect resistant to fipronil in Argentinean populations of the cattle tick Rhipicephalus microplus. Two different larval bioassays prepared ... -
A long-term sustainability assessment of an Argentinian agricultural system based on emergy synthesis
(2015-06-24)By tracking the different flows of emergy (the total amount of solar energy that was directly or indirectly required in a production process) it is possible to account for all environmental work previously involved in ... -
A meta‐analysis on the effectiveness of homofermentative and heterofermentative lactic acid bacteria for corn silage
(2018-08)Aims: This meta‐analysis aims to assess the effect of lactic acid bacteria (LAB) inoculation on fermentation parameters, microbiological composition and aerobic stability of corn silage. Methods and Results: Databases ... -
A morphological and phylogenetic analysis of Ornithodoros marinkellei (Acari: Argasidae), with additional notes on habitat and host usage
(Springer, 2018-10)Ornithodoros marinkellei was described from larvae collected on Pteronotus spp. bats in Colombia and Panama. More recently, this tick was reported in the Brazilian Amazon. Because some morphometric differences were observed ... -
A new argasid tick species (Acari: Argasidae) associated with the rock cavy, Kerodon rupestris Wied-Neuwied (Rodentia: Caviidae), in a semiarid region of Brazil
(BioMed Central, 2016)Background: The rock cavy Kerodon rupestris (Wied-Neuwied, 1820) is a rodent species endemic to northeastern Brazil. Earlier studies have associated the argasid tick Ornithodoros talaje (Guérin-Méneville, 1849) with rocky ... -
A new species of Ornithodoros (Acari: Argasidae) from desert areas of northern Chile
(2016-07)Ornithodoros atacamensis n. sp. is described from larvae collected on the lizard Liolaemus bisignatus and from free-living adults collected in desert areas from the Pan de Azúcar and Llanos de Challe National Parks, in ... -
A new species of Ornithodoros (Acari: Argasidae), parasite of Microlophus spp. (Reptilia: Tropiduridae) from northern Chile
(2013-02)A new species, Ornithodoros microlophi (Acari: Argasidae), belonging to the subgenus Alectorobius is described from larvae collected on the lizards Microlophus atacamensis (Donoso-Barros, 1966) and Microlophus quadrivittatus ... -
A novel spotted fever group Rickettsia infecting Amblyomma parvitarsum (Acari: Ixodidae) in highlands of Argentina and Chile
(2016)The tick Amblyomma parvitarsum (Acari: Ixodidae) has established populations in Andean and Patagonic environments of South America. For the present study, adults of A. parvitarsum were collected in highland areas (elevation ... -
A pictorial key to differentiate the recently detected exotic Haemaphysalis longicornis Neumann, 1901 (Acari, Ixodidae) from native congeners in North America
(Pensoft Publishers, 2019-01)Until recently, only two haemaphysaline species, Haemaphysalis chordeilis (Packard, 1869) and Haemaphysalis leporispalustris (Packard, 1869), were known to occur in the United States, and neither was considered to be of ... -
A safe and effective vaccine against bovine leukemia virus
(Frontiers Media, 2022-08)Previous attempts to develop a vaccine against bovine leukemia virus (BLV) have not been successful because of inadequate or short-lived stimulation of all immunity components. In this study, we designed an approach based ... -
A silicon-membrane based artificial feeding system for Amblyomma sculptum nymphs
(Springer, 2025-05)The aim of the study was to establish an artificial feeding system (AFS), based on silicon membranes, for Amblyomma sculptum nymphs and compare it to classical feeding systems using laboratory animals. Three cohorts of 60 ... -
A spatiotemporal analysis of bovine brucellosis cases in dairy herds from Argentina, from 2014 to 2023
(Springer, 2025-09)Brucellosis is a bacterial infection that causes abortion in cattle, poses a significant public health risk, and causes economic losses in livestock production. This study analyzed passive epidemiological surveillance data ... -
A Trypanosoma species detected in Rhipicephalus (Boophilus) microplus ticks from Argentina
(Elsevier, 2020-09)Specimens of a Trypanosoma sp. were found in a haemolymph sample of Rhipicephalus microplus from Argentina. Polymerase chain reaction (PCR) was done targeting the SSU rRNA gene of Trypanosoma spp. and a fragment of 2300 ... -
Abortion associated with Brucella abortus strain RB51 vaccination during gestation in a dairy cow immunized with strain 19 as a calf
(Elsevier, 2025-12)Bovine brucellosis, caused by Brucella abortus, is a zoonotic disease that leads to abortions in cattle and poses a public health risk. Vaccination with live attenuated strains, including S19 and RB51, is part of control ... -
Accidents in farming in Santa Fe province, Argentina
(Universidad de Buenos Aires, 2014)Background: frequency of occupational accidents tends to be high in rural areas. Objectives: to characterize accidents and injuries, risk perception and adoption of protective elements on livestock workers in Sarmiento, ... -
Una actualización sobre el meteorismo espumoso bovino = An update on frothy bloat in cattle
(Facultad de Ciencias Veterinarias, Universidad Austral de Chile, 2010)El meteorismo espumoso bovino es un trastorno digestivo que limita la producción en los bovinos para carne y leche. Muchos factores han sido involucrados como causales del mismo, sin conocerse a ciencia cierta su influencia ... -
Alternative applications of the strategic control against the cattle tick Rhipicephalus (Boophilus) microplus in a subtropical area
(Springer, 2021-09)Although different evaluations on the efficacy of the strategic control against Rhipicephalus microplus have been performed, the effects of successive applications of these schemes on the abundance of cattle ticks have not ... -
Amblyomma aureolatum (Acari: Ixodidae): nuevos registros en las provincias de Buenos Aires y Santa Fe, Argentina
(2016-06)En los meses de julio de 2015 y enero de 2016 se colectaron garrapatas de un gato montés (Leopardus geoffroyi) localizado en la provincia de Buenos Aires y de un canino doméstico (Canis lupus familiaris) en la provincia ... -
Amblyomma cajennense (Fabricius, 1787) (Acari: Ixodidae), the Cayenne tick: phylogeography and evidence for allopatric speciation
(2013-12)Background: Amblyomma cajennense F. is one of the best known and studied ticks in the New World because of its very wide distribution, its economical importance as pest of domestic ungulates, and its association with a ...