The aim of this study was to assess, whether a sublethal dose of gamma-rays will influence the avoidance behaviour and anxiety in rats and whether the response to radiation depends on time of day of its application. Adult male Wistar rats were tested in elevated plus-maze, in hot plate test and in the light/dark box in 4 regular intervals during a day. After two weeks the animals were irradiated with a whole-body dose 6 Gy of gamma-rays. One day after irradiation the animals were repeatedly tested in the same way, as before irradiation. In the plus-maze test an increased level of anxiety was established. The irradiation significantly decreased the locomotor activity of rats, but the extent of exploratory and comfortable behaviour were not altered. After irradiation, an elevated aversion to the thermal stimulus was observed in the hot plate test. The effects of radiation were more pronounced in the light period of the day, than in the dark one. No significant differences in aversion to light were detected after irradiation. The obtained results indicate, that sublethal doses of ionizing radiation can markedly influence the reactivity of animals to adverse stimuli, their motoric activity and emotional status, as well.
Inappropriate elimination is common in SH ( Lord et al., 2008 ). In many shelters, dogs are confined to kennels with limited or no access to an outdoor area. In many instances, walks may be limited due to the lack of staff or
Authors:Sz. Naderi, Á. Miklósi, A. Dóka, and et al
Leading a blind or blindfolded person is a complex cooperative task influenced by many factors. The aim of this study was to determine if quality of attachment affects the performance of dog and owner dyads showed on an Obstacle Course. Modified Ainsworth's Strange Situation Test was used for assessing attachment quality. Only one dimension of the attachment, the 'anxiety' factor was found to correlate with behavioural measures of the Obstacle Course (e.g. number of mistakes, initialisation index that reflects which participant initiates more actions in a dyad). We found significant differences of performance between the three groups of dog-owner pairs (pet dog, guide dog and police dog dyads), but we could not show significant differences in the 'attachment' factor among these groups. We concluded that it is not the attachment type that causes the main differences in the leading behaviour of our three study groups. Dogs have an innate ability for cooperation with humans that was enhanced by selective breeding during domestication and this basic ability can be modified by training but seem to be less affected by the relationship with the owner.
Authors:Cosme Alvarado-Esquivel, Luis Francisco Sánchez-Anguiano, Jesús Hernández-Tinoco, Edwin Adiel Calzada-Torres, Sergio Estrada-Martínez, Alma Rosa Pérez-Álamos, Raquel Vaquera-Enriquez, Arturo Díaz-Herrera, Raúl Segura-Moreno, María de Lourdes Guerrero-Carbajal, María Guadalupe Rentería-López, Isabel Beristain García, Elizabeth Rábago-Sánchez, and Oliver Liesenfeld
, Yolken RH , Xiao JC , Beckstead JW , Fuchs D , Mohapatra SS , Seyfang A , Postolache TT : Prenatal depression and anxiety in Toxoplasma gondii
Authors:Cosme Alvarado-Esquivel, Luis Francisco Sánchez-Anguiano, Jesús Hernández-Tinoco, Luis Omar Berumen-Segovia, Yazmin Elizabeth Torres-Prieto, Sergio Estrada-Martínez, Alma Rosa Pérez-Álamos, María Nalleli Ortiz-Jurado, Gabriel Molotla-de-León, Isabel Beristain-García, Elizabeth Rábago-Sánchez, and Oliver Liesenfeld
, Yolken RH , Xiao JC , Beckstead JW , Fuchs D , Mohapatra SS , Seyfang A , Postolache TT : Prenatal depres sion and anxiety in Toxoplasma gondii-positive women . Am J Obstet Gynecol 204 , 433 ( 2011
Authors:V. Posevitz, C. Vizler, S. Benyhe, E. Duda, and Anna Borsodi
Roy, V., Belzung, C., Delarue, C., Chapillon, P. (2001) Environmental enrichment in BALB/c mice: effects in classical tests of anxiety and exposure to a predatory odor. Physiol. Behav. 74 , 313-320.