不致命的老化是许多鱼类所需的方法。佛罗里达社会价值的低音Micropterus floridanus,大嘴鲈鱼Micropterus salmoides,和他们的中间级使其总理候选人。释放率在80 - 90%之间,TrophyCatch允许低音垂钓者提交他们捕获的公民科学数据库。这些不会杀理想和合作项目提供动力发展的非致命性老化方法收集更多的数据在佛罗里达低音种群动态。从历史上看,背刺衰老的水平精度提供了变量,根据纬度,方法、经验水平等因素。我们比较年龄从三个读者来自低音脊柱部分水体中六个不同的增长率(沼泽水库,Fellsmere水库,格里芬湖,阿巴拉契科拉河,Escambia河沼泽,运河和l - 67 a)。进一步评估脊柱老化显示变量在水体水平的准确度和精密度,读者,和使用参考集。然而,老化的错误没有明显不同的跨三个读者和六个水体,除了l - 67之间的运河和沼泽水库,根据我们的线性模型之一。这渺小一年内可能是因为协议高在所有水体和读者(范围= 71−93%)。我们将使用参考集到一个新的模型; wherein we detected improved accuracy of dorsal spine ages in L-67A Canal and Fellsmere Reservoir. In some instances, dorsal spines would be useful for aging Largemouth Bass in a nonlethal fashion, particularly when incorporating a reference set during aging and if estimating fish age within a year is acceptable. This is promising especially for long or old fish which are rarely seen, and if encountered, not often sacrificed. Dorsal spines could provide managers viable and uncommon age information about trophy bass without the need to sacrifice this socially and biologically important segment of the population.