Social odours, hormone modulation and resistance to disease in male laboratory mice, Mus musculus

Article Abstract:

Exposure to unfamiliar male and female odors reduces immunocompetence and resistance to infection in Babesia microti (protozoan blood parasite), and modulates immunodepressive hormone secretion in male mice. Social rank- dependence effects reveal that low ranking rats have less severe infection compared to high ranking rats. Combining female odors with those of a male leads to marked reduction in resistance in socially high ranking rats. Elevated corticosterone, rather than testosterone levels, after exposure to odors reduces resistance to infection.

Research, Analysis, Hormones, Odors, Natural immunity

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Mus spretus lataste: a hygienic house mouse?

Article Abstract:

A study of the behavior of Mus spretus revealed fecal manipulation in the species to be a hygienic effort to clear their pathways and habitations of sticky, fresh feces. The mice either carried or rolled and re-sited their feces. Studies on the composition of the feces provide valuable insight on the food habits of the species.

Health aspects, Behavior, Feces

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