カエルの鳴き声のリズムを市民科学が解明(Ribbiting rhythms: citizen science reveals new information about frog calls)

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2023-06-16 ニューサウスウェールズ大学(UNSW)

◆市民科学者によって収集されたデータを使用し、オーストラリアの研究者が約700匹のカエルの鳴き声を分析しました。カエルの鳴き声は個体ごとに異なるアクセントを持っていることがわかりました。従来の理論とは異なり、生息地の構造と鳴き声の変化は強く関連していないことが明らかになりました。
◆バンジョーカエルの広告鳴き声の進化は、他の動物や人為的な騒音など、複数の要素の相互作用に影響を受けている可能性があります。市民科学のデータは、広範な地理的多様性を捉えるための貴重な機会を提供しています。

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大規模市民科学データを用いたカエルにおける音響適応仮説の評価 Assessment of the acoustic adaptation hypothesis in frogs using large-scale citizen science data

G. L. GillardJ. J. L. Rowley
Journal of Zoology  Published: 06 June 2023
DOI:https://doi.org/10.1111/jzo.13088

カエルの鳴き声のリズムを市民科学が解明(Ribbiting rhythms: citizen science reveals new information about frog calls)

Abstract

Acoustic communication is vital to the survival and fitness of many vertebrates. While successful communication is reliant on acoustic signals reaching an intended receiver and maintaining content fidelity, propagating signals are attenuated by environmental factors such as habitat type. The acoustic adaptation hypothesis (AAH) predicts that the acoustic properties of signals are selected for optimal transmission in the habitats in which they propagate. To date, consistent evidence to support the theory is lacking, but studies have typically been primarily based on localized datasets with small sample sizes. Citizen science is emerging as a potential means to overcome the challenges associated with broad-scale sampling, allowing us to assess the validity of the AAH in frogs on a continental scale. We analysed the male advertisement calls of 674 individual banjo frogs (Limnodynastes dorsalis, L. dumerilii, L. interioris and L. terraereginae) from across their range, pairing these citizen science data with remotely sensed measures of habitat complexity. While we detected considerable variation in acoustic structure within and among banjo frog species, this was not strongly correlated with habitat complexity. Thus, we found no support for the AAH. However, with our study spanning an area of over 1.7 million km2, we conducted the largest-scale test of the AAH in frogs to date, contributing to the global understanding of acoustic signal evolution.

生物環境工学
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