Buscar
Mostrando ítems 3421-3430 de 7562
Impacts on well-being and health by excessive rainfall and floods in Paraguay, Uruguay and Bolivia
(Springer, 2016-03-25)
Hydro-climatic anomalies are impacting the well-being of populations and increasing vector-, rodent- and water-borne diseases (H-ID) in Bolivia, Paraguay and Uruguay where extreme ENSO- linked floods have been frequent ...
Differences in population parameters of Rattus norvegicus in urban and rural habitats of central Argentina
(De Gruyter, 2013-05)
Life history characteristics are influenced by both biotic and abiotic factors of the environment. The aim of this study was to compare the life history strategies of Rattus norvegicus populations in urban and rural habitats ...
Species identification of a suspected bone found in blood sausage
(OAT, 2016-12)
The case of an identification for a small bone found in a blood sausage is described. The similitude with a rodent bone leads the consumer to demand the government organism responsible of food quality control. Bone and ...
Two new species of Neotyphloceras (Siphonaptera: Ctenophthalmidae) from Argentinean Patagonia
(Magnolia Press, 2014-03)
Two new species of Neotyphloceras Rothschild, parasites of sigmodontine rodents from Argentinean Patagonia, are described and illustrated: N. crackensis n. sp. and N. pardinasi n. sp. These species are compared with their ...
Open field exposure facilitates recovery from an aversive emotional event: Involvement of adrenergic and cholinergic transmitter systems
(Elsevier Ireland, 2016-10)
Successive negative contrast (SNC) is an incentive relativity procedure that has been widely used to model emotional reactivity in rodents. The reward downshift experienced during SNC is thought to result in frustration. ...
Effect of the photoperiod and administration of melatonin on folliculostellate cells of the pituitary pars distalis of adult male viscacha (Lagostomus maximus maximus)
(Elsevier Gmbh, Urban & Fischer Verlag, 2011-06)
Numerous reports have shown the effect of photoperiod and melatonin administration on the different hormone secreting cell types in the pituitary pars distalis. The viscacha (Lagostomus maximus maximus) is a rodent with ...
Incentive relativity in middle aged rats
(Elsevier Ireland, 2014-01)
Response to a reinforcer is affected by prior experience with different reward values of that reward, a phenomenon known as incentive relativity. Two different procedures to study this phenomenon are the incentive downshift ...
Pharmacotherapy with 17β-estradiol and progesterone prevents development of mouse experimental autoimmune encephalomyelitis
(De Gruyter, 2010-01-01)
Pregnant women with multiple sclerosis (MS) show disease remission in the third trimester concomitant with high circulating levels of sex steroids. Rodent experimental autoimmune encephalomyelitis (EAE) is an accepted model ...
First record of Abrothrix jelskii (Thomas, 1894) (Mammalia: Rodentia: Cricetidae) in Salta province, northwestern Argentina: Filling gaps and distribution map
(Check List, 2013-09)
Abrothrix jelskii is one of the lesser-known species in the genus Abrothrix, and it has only been recorded in a few localities in highland environments along the central Andean range. In Argentina, existing records are ...