論文公開（博士3年級生網野海先生）

投稿者: insects 投稿日: 2023年5月10日2023年5月10日

博士3年級生網野海先生的論文刊登在雑誌「Ethology」上。

論文URL: https://doi.org/10.1111/eth.13375

<概要>

【標題】

過去的沖突經歷對於攻擊性果蠅配偶後續衝突結果的影響

Effects of a past contest on the future winning probability in a hyper-aggressive fruit fly

【摘要】

眾所周知，許多動物具有“贏家效應/輸家效應”，即過去的勝利/失敗使下一場比賽更容易贏/輸。

另一方面，在具有攻擊性的果蠅中，人們發現過去的贏家和輸家一樣有可能輸掉。此外，通過調整對手的大小來改變戰鬥強度的實驗揭示了贏家之所以失敗的原因更有可能是鬥爭的次數。這項研究表明，經驗在動物鬥爭中的作用是多種多樣的，不能僅用贏家/輸家效應來解釋。

In many animals, the “winner/loser effect” is known to make individuals more likely to win/lose the next fight based on their past victories or defeats. However, in Drosophila prolongata, we found that past winners are just as likely to lose as losers. Moreover, by the experiments that manipulated the intensity of fights by adjusting the size of opposing individuals, we found that the intensity of fights may be the cause of why winners are more likely to lose. This study demonstrates that the role of experience in animal fights is diverse and cannot be solely explained by the winner/loser effect.