Peripheral hearing sensitivity is similar between the sexes in a benthic turtle species despite the larger body size of males

Autor: Tongliang Wang, Jinxia Yang, Jinhong Lei, Jingdeng Huang, Haitao Shi, Jichao Wang
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Ecology and Evolution, Vol 14, Iss 8, Pp n/a-n/a (2024)
Druh dokumentu: article
ISSN: 2045-7758
DOI: 10.1002/ece3.70130
Popis: Abstract Sexually dimorphic hearing sensitivity has evolved in many vertebrate species, and the sex with a larger body size typically shows more sensitive hearing. However, generalizing this association is controversial. Research on sexually dimorphic hearing sensitivity contributes to an understanding of auditory sense functions, adaptations, and evolution among species. Therefore, the hypothesized association between body size and hearing needs further validation, especially in specific animal groups. In this study, we assessed hearing sensitivity by measuring auditory brainstem responses (ABRs) in both sexes of 3‐year‐old Chinese softshell turtles (Pelodiscus sinensis). In this species, male bodies are larger than those of female, and individuals spend most of their lives in the mud at the bottom of freshwater habitats. We found that for both sexes, the hearing sensitivity bandwidth was 0.2–0.9 kHz. Although males were significantly larger than females, no significant differences in ABR thresholds or latencies were found between males and females at the same stimulus frequency. These results indicate that P. sinensis hearing is only sensitive to low‐frequency (typically
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