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Interactions between intruders and residents in the mole vole Ellobius talpinus

动物学报 2004年第1期50卷 19-26页

作者： Eugene NOVIKOV Dmitry PETROVSKI irene kolosova Stephan STEINLECHNER Mikhail MOSHKIN Institute of Animal Systematics and Ecology Siberian Branch of Russian Academy of SciencesFrunze Street 11630091Novosibirsk Russia Department of Zoology School of Veterinary MedicineHannoverGermany

We studied the behavioral and endocrine responses of the fossorial s ocial rodent, mole vole Ellobius talpinus Pall., to intrusions of strangers int o burrow systems that were occupied by intact families. Both in reproductive and non-reproductive seasons, all intruders disappeared from the burrow systems of residents within two days of introduction, whereas 4 of 7 individuals introduced into empty burrows remained there at least for two days. Introduction of strang ers led to the concentration of residents at the point of release and to an incr ease of plasma corticosterone in both residents and intruders. During the breedi ng season, introduction of strangers was also accompanied by an increase of plas ma testosterone of residents on the day of introduction. Thus, simulation of int rusion of strangers demonstrated the efficient social fence of resident mole vol es that seems to be an important mechanism of stabilization of size and structur e of mole vole families. Encounters of residents and intruders resulted in activ ation of physiological mechanisms of stress, especially during the breeding seas on .

关键词： Fossorial rodents Mole vole Familiarity Social fence Stress

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Endocrine status and scent attractiveness in male dwarf hamsters Phodopus sungorus injected with thymus-dependent and thymus-independent antigens

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动物学报 2004年第5期50卷 714-722页

作者： Ekaterina KONDRATYUK Ekaterina LITVINOVA Eugene NOVIKOV Dmitry PETROVSKI irene kolosova Mikhail MOSHKIN Institute of Animal Systematics and Ecology Siberian Branch of Russian Academy of SciencesFrunze Street 11Novosibirsk 630091Russia

We studied the influences of immune activation by thymus-dependent(sheep red blood cells,SRBC)and independent(bacterial lipopolysaccharide,LPS)antigens on odor signals and endocrine status in dwarf *** of SRBS to mature males resulted in a drop of sexual scent attractiveness of soiled bedding collected during 5 days after *** effect was accompanied with a decline of fecal *** of the male scent attractiveness after SRBC treatment had maximum manifestation in males of dwarf hamsters with low humoral immune response to this *** to the effects of SRBC,males injected with LPS showed an increase of scent *** in the time that mature females spent sniffing olfactory stimuli(LPS vs control),correlated positively with differences in concentration of testosterone in feces collected from LPS and saline treated *** discuss the adaptive meaning of the opposite olfactory effects,which induced by activation of the nonspecific innate immunity with LPS and by activation of specific acquired immunity with SRBC.

关键词： Dwarf hamster Phodopus sungorus Non-replicated antigens Scent attractiveness Testosterone Cortisol

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