ハンプバッククジラの歌

R S Payne, S McVay

Science (New York, N.Y.)

|August 13, 1971

まとめ

ハンプバッククジラ (Megaptera novaeangliae) は複雑な歌う行動を示し,正確な歌のパターンを何時間も繰り返します. 歌うクジラの機能と性別は不明である.

科学分野:

マリン・バイオロジーの海洋生物学
バイオアコースティクスバイオアコースティクス
動物の行動動物の行動

背景:

ハンプバッククジラ (Megaptera novaeangliae) は"ソング"と呼ばれる長時間,構造的な音の配列を生成します.
これらの歌は,個々のクジラが異なる歌のタイプに固執する,繰り返し続く一連の音によって特徴付けられています.

研究の目的:

ハンプバッククジラの歌の構造的特徴と繰り返しのパターンを記述する.
曲の構造に及ぼす潜在的な影響を調査し,これらの発声の機能を特定する.

主な方法:

ハンプバッククジラの発声に関する観察的研究.
録音された音のパターンを分析して,曲の構造,繰り返し,バリエーションを特定する.
曲のパターンの比較は,個人と曲セッションの間で行われました.

主要な成果:

ハンプバッククジラの歌は,精密に繰り返される一連の音であり,各シリーズは7〜30分であり,潜在的に数時間続く可能性があります.
各個別のクジラには独特の歌の種類があり,種の特定のパターンのまわりにバリエーションがあります.
テーマのシーケンスを含む曲の構造は,個人に一貫性がありますが,フレーズの数は異なります.
ダイナマイトの爆発などの外部からの大きな騒音は,曲に影響を与えないようでした.
歌うクジラの性別と歌の機能は現在不明です.

結論:

ハンプバッククジラの歌は複雑で,個別に特異的で,高度に構造化された声のパフォーマンスです.
曲の繰り返しとテーマシーケンスの一貫性は,重要な生物学的な役割を示唆しますが,その機能は曖昧です.
歌うクジラの性別を判定し,その複雑な歌の目的を明らかにするために,さらなる研究が必要である.

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