Continuous exposure to ozone (O-3, 1.2 ppm) in adult CD-1 male mice for 20 consecutive days markedly influenced a number of items of aggressive behavior induced by 59 days of individual housing. The behavior of mice was videotaped on days 1, 3, and 5 of five consecutive daily encounters (10 min each; isolation days 55, 57, and 59). Ozone exposure caused an abatement of aggressive behavior and enhanced fear-associated displays shown by a significant decrease in the frequency of attacking and digging and an increase in freezing. Moreover, O-3 induced a decrease of time spent in attacking and exploration/activity. Nonexposed animals exhibited a day-dependent increase in self-grooming frequency which was not observed in O-3 mice; by contrast, freezing was higher in O-3 mice on day 5 of the test. Data suggest that O-3 exposure produces a remarkable reduction of mouse aggression, indirectly confirming previous findings on physical and neurobehavioral effects of O-3. (C) 1995 Wiley-Liss, Inc.

Exposure to ozone inhibits isolation-induced aggressive behavior of adult CD-1 male mice

Fiore M
Writing – Original Draft Preparation
;
1995

Abstract

Continuous exposure to ozone (O-3, 1.2 ppm) in adult CD-1 male mice for 20 consecutive days markedly influenced a number of items of aggressive behavior induced by 59 days of individual housing. The behavior of mice was videotaped on days 1, 3, and 5 of five consecutive daily encounters (10 min each; isolation days 55, 57, and 59). Ozone exposure caused an abatement of aggressive behavior and enhanced fear-associated displays shown by a significant decrease in the frequency of attacking and digging and an increase in freezing. Moreover, O-3 induced a decrease of time spent in attacking and exploration/activity. Nonexposed animals exhibited a day-dependent increase in self-grooming frequency which was not observed in O-3 mice; by contrast, freezing was higher in O-3 mice on day 5 of the test. Data suggest that O-3 exposure produces a remarkable reduction of mouse aggression, indirectly confirming previous findings on physical and neurobehavioral effects of O-3. (C) 1995 Wiley-Liss, Inc.
1995
Istituto di Biochimica e Biologia Cellulare - IBBC
aggressive behavior
ozone
mouse
fear-associated displays
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14243/269987
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