| Project/Area Number |
11410021
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
実験系心理学
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| Research Institution | University of Tsukuba |
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Principal Investigator |
MAKINO Junshiro University of Tsukuba, Institute of Psychology, Professor, 心理学系, 教授 (60015443)
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| Co-Investigator(Kenkyū-buntansha) |
WADA Yumiko The Institute of Physical and Chemical Research, Genomic Sciences Center, Researcher, ゲノム科学総合研究センター, 研究員 (70302362)
TOMIHARA Kazuya Kagoshima Univ., Faculty of Law, Economics, and Humanities, Associate Professor, 法文学部, 助教授 (00272146)
KATO Katsunori University of Tsukuba, Institute of Psychology, Assistant Professor, 心理学系, 講師 (50261764)
MORI Toshiyuki Jin-ai Women's College, Department of Infant Education, Associate Professor, 幼児教育学科, 助教授 (00301078)
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| Project Period (FY) |
1999 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥15,000,000 (Direct Cost: ¥15,000,000)
Fiscal Year 2001: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2000: ¥5,100,000 (Direct Cost: ¥5,100,000)
Fiscal Year 1999: ¥9,200,000 (Direct Cost: ¥9,200,000)
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| Keywords | behavior genetics / coping strategies / inbred strains of mice / selected lines for behavior / open field activity / emotionality / experimental situations / behavior systems / 近交系マウス・ラット / 事態対処 / 近交系ラット・マウス / 行動の遺伝 |
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| Research Abstract |
Coping strategies of laboratory rodents were investigated with appetitive, aversive, and social situations. The influences of developmental factors were also examined.
Appetitive situations : (1) Choice behavior between immediate-small and delayed-large rewards was investigated in inbred strains of mice. BALB/c more preferred immediate-small rewards than C57BU6 and DBA/2, suggesting that BALB/c is more impulsive. (2) Basic findings on coping strategies with food were obtained in rats. When rats find food, they eat it eitheron the spot orafter bringing it home. Such a choicemight be made on the basis of estimated eating time. (3) Strain differences for hoarding behavior were shown in hamsters.
Aversive situations : (l) In aversive situations characterized by novelty and/or openness, the coping strategies of high and low-active lines of mice and Tsukuba high- and low-emotional lines of rats were evaluated. Although brain monoaminergic systems were important in control of coping strategies,
… More
buspirone, a serotonergic anxiolytic, were effective only in the low-emotional line. (2) Coping strategies of inbred strains of mice in aversive situations involving fear conditioning were analyzed. Avoidance performance depended on the coping strategies and the coping behavior changed following the acquisition of avoidance responses. (3) The.responses of Tsukuba high- and low-emotional lines of rats to a novel taste were different from those to a novel environment.
Social situations : (1) Coping strategies used between adult male mice were similar to those in aversive situations, specifically for freezing response. (2) Aggression of male mice was facilitated by the presence of females. Female mice preferred dominant males and chose them as a mating partner. (3) Maternal behavior was affected by audible and ultrasonic vocalization of pups in mice.
Developmental factors : In gerbils, a monogamous species, paternal influences on coping strategies in aversive and social situations were evaluated. The coping strategy in agonistic interactions was affected. Less
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