Destruction of the Telencephalic Archistriatum on Feminine Sexual Behavior in Hens

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  • 雌鶏の終脳旧線条体の破壊による性行動の変化
  • メンドリ ノ シュウノウ キュウ センジョウタイ ノ ハカイ ニ ヨル セイ

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Abstract

Significant changes in fear, agonistic and sexual or copulatory behaviors were observed in hens after electrolytic destruction of the postero-medial portion of the archistriatum, corresponding to the amygdala in mammals. The lesioned hens did not become panic but avoided quietly the hand of an observer thrusted into the home cage. They did not attack but escaped from another bird invading into the home cage and from a strange bird in the initial paired contest. They did not reject the approach of cocks and also did not exhibit the acceptive crouching posture. They did not also exhibit tail-up (lordosis) when they were mounted and treaded. Ovarian function was evaluated nearly normal even in the hens which had lost the sexual behavior activity. In conclusion, the functions of the postero-medial portion of the archistriatum in female chickens may be focussed on the facilitation of the emotionality and the sexual recognition as well as acceptive and reflexive responses in the sexual behavior.

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