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首页> 外文期刊>Journal of Fish Biology >New insights into patterns and rates of tooth replacement in serrasalmid and characid fishes, with implications for the subsistence fishery of Peru's remote riberenos villages
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New insights into patterns and rates of tooth replacement in serrasalmid and characid fishes, with implications for the subsistence fishery of Peru's remote riberenos villages

机译：塞尔碱和夏状鱼类牙齿替代品模式和速度的新见解，对秘鲁偏远莱伯纳斯村的生存渔业有影响

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摘要

We explored patterns, rates and unexpected socio-ecological consequences of tooth replacement in serrasalmids and characids of the Peruvian Amazon using microcomputed tomography. Of 24 specimens collected in February 2019, representing a mix of red-bellied piranha Pygocentrus nattereri, redeye piranha Serrasalmus rhombeus, silver dollar fish Ctenobrycon hauxwellianus and mojara Astyanax abramis, six individuals possessed edentulous jaw quadrants. On average, 22.9% of fish collected per day from these species featured incomplete dentition, a value three to five times higher than anticipated based on replacement rates estimated from captive fish, differences that may be driven by ontogeny, seasonality or environmental quality.
机译：我们利用微计算机断层扫描技术，探索了秘鲁亚马逊地区的锯齿状齿类和齿类牙齿替换的模式、比率和意外的社会生态后果。在2019年2月采集的24个标本中，有6个个体拥有无牙颌象限，其中包括红腹食人鱼Pygocentrus nattereri、红腹食人鱼Serrasalmus rhombeus、银元鱼Ctenobrycon hauxwellianus和mojara Astyanax abramis。平均而言，每天从这些物种采集的鱼类中有22.9%的牙齿不完整，这一数值比根据圈养鱼类的替换率估计的预期值高出三到五倍，这种差异可能由个体发育、季节性或环境质量驱动。

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