We explored patterns, rates, and unexpected socio-ecological consequences of tooth replacement in serrasalmids and characids of the Peruvian Amazon using microCT. 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. This article is protected by copyright. All rights reserved.

中文翻译：

---

对 serrasalmid 和 characid 鱼类牙齿更换模式和速率的新见解，对秘鲁偏远的 ribereños 村庄的自给渔业产生影响

我们使用 microCT 探索了秘鲁亚马逊的 serrasalmids 和 characids 中牙齿更换的模式、比率和意外的社会生态后果。在 2019 年 2 月收集的 24 个标本中——代表了红腹食人鱼 Pygocentrus nattereri、红眼食人鱼 Serrasalmus rhombeus、银元鱼 Ctenobrycon hauxwellianus 和 mojara Astyanax abramis 的混合体——六个个体拥有无牙象限。平均而言，每天从这些物种中收集的鱼中有 22.9% 具有不完整的牙列，该值比根据可能由个体发育、季节性或环境质量驱动的圈养鱼差异估计的替代率估计的替代率高出三到五倍。本文受版权保护。版权所有。