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松果とバクテリアのピロゲンの独立した効果が,トカゲの行動温度調節に起因する

B T Firth, C L Ralph, T J Boardman

|June 5, 1980

まとめ

首輪の松葉切除術は,熱調節のためにより低い温度を選択するようにします. この効果は, parietal eye removal効果とは対照的に,行動的な発熱誘導とは独立しています.

科学分野:

ヘルペトロジーヘルペトロジー
神経内分泌学の神経内分泌学
行動生態学行動生態学

背景:

ワニの桃体複合体には,眼と頭蓋内臓器が含まれています.
パリエタル・アイの除去により,トカゲはより高い温度調節温度を選択します.
熱調節における桃器官の役割はあまり理解されていないが,フィールドデータでは,桃切除術に対する敵対的効果を示唆している.

研究の目的:

臓器切除 (pinealectomy) がの行動温度調節に及ぼす影響を調査する.
パニアレクトミーが誘発行動性発熱とは無関係に温度選択に影響するかどうかを判断する.

主な方法:

皮内切除手術は,首輪 (Crotaphytus collaris) で行われた.
Lizards は,好みの体温を評価するために,熱グラデーションに置かれました.
ピネアレクトミーの効果は,行動性発熱物質の有無と有無で評価されました.

主要な成果:

松葉切除されたトカゲは,対照トカゲと比較して,著しく低い温度を選択しました.
松葉切除と対照の間の温度選択の差は,発熱誘導に関係なく一貫したままでした.
手術による治療効果は,行動性発熱物質とは無関係でした.

結論:

松果器は,の行動温度調節を調節する上で重要な役割を果たし,好ましい体温に影響を与えます.
松葉切除術の結果,温度選択の低温的シフトが発生し, parietal eye removal の後に見られる高温的シフトと対照的です.
桃器官の温度調節機能は,行動的な発熱反応を媒介する役割とは異なる.

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