生物学杂志

Journal of Biology ›› 2025, Vol. 42 ›› Issue (1): 87-.doi: 10.3969/j.issn.2095-1736.2025.01.087

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Differences in respiratory behavior between female and male Chinese giant salamanders (Andrias davidianus) during the pre-reproductive period

TIAN He1,2, WANG Pei1, LUO Shouliang1, ZHANG Yifang1, WANG Ziteng1, LUO Qinghua1,2   

  1. 1. Hunan Engineering Laboratory for Chinese Giant Salamander’s Resource Protection and Comprehensive Utilization,
    School of Biological Resources and Environmental Sciences, Jishou University, Zhangjiajie 427000, China; 2. Hunan
    Engineering Technology Research Center for Amphibian and Reptile Resource Protection and Product Processing,
    College of Biological and Chemical Engineering, Changsha University, Changsha 410022, China
  • Online:2025-02-18 Published:2025-02-12

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Abstract: To explore the differences in respiratory behavior between different genders of Chinese giant salamanders (Andrias davidianus) and the adaptation of breathing behavior to their special physiological stages, and to enrich the research on the breathing behavior characteristics ofA. davidianus, the infrared image monitoring system was used to monitor the breathing behavior of female and maleA. davidianusin the pre-reproductive period, and the water quality monitoring system was used to monitor the water temperature (WT) and dissolved oxygen (DO) in the stream ofA. davidianus’s breeding pool for 45 days. The indicators of breathing behavior such as single breathing duration (SBD), breathing interval (BI), breathing frequency (BF), and total breathing duration (TBD) were counted, and the circadian rhythm and the change trend of breathing behavior in the pre-reproductive period, as well as the relationship between breathing behavior indicators and WT and DO were analyzed. The results showed that in the pre-reproductive period, female and maleA. davidianushad longer SBD at night, shorter BI, more BF, and longer TBD than during the daytime. The SBD of femaleA. davidianuswas about （8.52±7.13）s shorter than that of maleA. davidianus, and its BI was about （431.74±171.52）s smaller than that of maleA. davidianus.Its BF was about （2.50±1.21）times/h more than that of maleA. davidianus, and its TBD over a hour was about （46.18±51.17）s larger than that of maleA. davidianus. The BD, BF and TBD were positively correlated with WT and negatively correlated with DO. BI was negatively correlated with WT and positively correlated with DO. In the pre-reproductive period,A. davidianushad an obvious circadian rhythm, and the respiratory metabolism of femaleA. davidianuswas stronger than that of maleA. davidianus, and they could actively regulate its breathing behavior to accommodate the changes in the water environment.

Key words: Chinese giant salamander (Andrias davidianus), respiratory behavior, pre-reproductive period, water temperature, dissolved oxygen

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