Female preference for size-matched males in an assortative mating frog: evidence from acoustic playback experiments
by Jiajun Hao | Yuxiao Qiu | Xiaonan Zhuang | Guohua Ding | Lishui University | Lishui University | Lishui University | Lishui University
Abstract ID: 190
Event: The 3rd AsiaEvo Conference
Topic: Behavioral evolution in vertebrates: diversity, genomics and mechanisms
Presenter Name: Guohua Ding

Abstract: Amplexus is a distinctive mating strategy in the reproductive life cycle of amphibians, encompassing both assortative and random mating strategies. Prior to amplexus, male frogs commonly emit acoustic signals to attract females, emphasizing the significant role of acoustic communication in the anuran reproductive process. However, it has remained unclear whether males' acoustic signals significantly affect the female choice of male size. In our study, we examined the mating strategy of a paddy frog, Fejervarya multistriata, and whether females can use acoustic signals to locate appropriately sized males. This investigation entailed an examination of the relationships between amplexus pairs’ sizes, the acoustic properties of male frogs, and phonotaxis experiments. The results showed that: (1) F. multistriata employed size-assortative mating as a reproductive strategy. (2) The first frequency band and note interval in male advertisement calls can serve as key indicators of individual male size. (3) Through phonotaxis experiments, female frogs preferred acoustic signals that matched male size. Therefore, we suggested that F. multistriata females can use acoustic signals to select size-matched males, thus achieving assortative mating.

Keywords: acoustic properties; assortative mating; Fejervarya multistriata; female mate-choice; male size