飼育下におけるスケトウダラの繁殖行動に伴う鳴音

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タイトル別名
  • Sound Production Related to the Reproductive Behavior of Captive Walleye Pollock Theragra chalcogramma (Pallas).
  • スケトウダラの音響生態学的研究　Ｉ　飼育下におけるスケトウダラの繁殖行動に伴う鳴音
  • シイクカ ニ オケル スケトウダラ ノ ハンショク コウドウ ニ トモナウ メ

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抄録

In the spawing season, sound production of captive walleye pollock Theragra chalcogramma (Pallas) was examined by the grunt call projection method. The pollock emitted four patterns of grunt calls, namely threatening call, aggressive-attacking call, courting call, and mating call. The sound frequency of these grunt calls is less than 800 Hz. The characteristics of walleye pollock behaviour matching each grunt call are as follows:<br> (1) Only one threatening grunt call was emitted by the superior male to threaten other males encountered.<br> (2) Aggressive-attacking grunt calls were emitted from two to five times in order to drive out other males from the male's occupied space. Behaviour included chasing, dorsal mounting and lateral mounting.<br> (3) Courting calls were emitted from six to twelve times in order to court other males and females which are characterized by swimming faster than usual. The behaviour included chasing, dorsal mounting and lateral mounting.<br> (4) Mating grunt calls were made more than thirteen times in order to mate with mature females. Behaviour included chasing, and dorsal, lateral and ventral mounting.

収録刊行物

  • 日本水産学会誌

    日本水産学会誌 60 (4), 467-472, 1994

    公益社団法人 日本水産学会

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