Lawson Katelyn M, Talbert Hannah G, Hill Jeffrey E
Program in Fisheries and Aquatic Sciences, Tropical Aquaculture Laboratory, School of Forest, Fisheries, and Geomatics Sciences, University of Florida, 1408 24th Street SE, Ruskin, FL 33570, USA.
Department of Crop, Soil, and Environmental Sciences, 201 Funchess Hall, Auburn University, Auburn, AL 36849, USA.
Biology (Basel). 2025 Feb 12;14(2):189. doi: 10.3390/biology14020189.
The spread of non-native species plays a substantial role in the designation of a species as invasive, yet the determination and measurement of non-native-species spread is challenging, particularly for fishes, which are limited by aquatic connectivity. Spread has been quantified for fishes in a variety of ways and exact methods vary by region and taxonomic group. In this study, we quantified fish spread in peninsular Florida and used life history traits to understand what factors contribute to the rate at which fish species spread. Using a variety of statistical analyses, we found that fast spreaders in peninsular Florida tend to have a larger body size, narrow diet, shorter time to hatch, greater salinity tolerance, and higher fecundity. However, some variables like parental care, egg diameter, and reproductive guild were the same or very similar across all established species that were included in the analyses. Predicting whether an established species will spread quickly or slowly in Florida may be more challenging than predicting whether an introduced fish species will establish, yet there is support across regions for the use of life history traits in the risk assessment process.
非本地物种的扩散在将一个物种认定为入侵物种方面起着重要作用，然而，确定和衡量非本地物种的扩散具有挑战性，特别是对于受水生连通性限制的鱼类而言。鱼类扩散已通过多种方式进行了量化，具体方法因地区和分类群而异。在本研究中，我们量化了佛罗里达半岛鱼类的扩散情况，并利用生活史特征来了解哪些因素会影响鱼类物种的扩散速度。通过各种统计分析，我们发现佛罗里达半岛扩散速度快的鱼类往往体型更大、食性窄、孵化时间短、耐盐性强且繁殖力高。然而，在分析中纳入的所有已建立种群的物种中，一些变量如亲代抚育、卵径和繁殖类群是相同或非常相似的。预测一个已建立种群的物种在佛罗里达的扩散速度是快还是慢可能比预测一个引入的鱼类物种是否会建立种群更具挑战性，不过在不同地区都支持在风险评估过程中使用生活史特征。
