Developmental plasticity does not improve performance during a species interaction: implications for species turnover

Species interactions can contribute to species turnover when the outcomes of the interactions are context dependent (e.g. change along environmental gradients). Plasticity may change this dynamic by altering the environmental tolerances of the species interacting. Here, we explored how the competitive interaction between two euryhaline fish, Poecilia reticulata and Poecilia picta, is influenced by acute and developmental responses to salinity. In Trinidad, P. reticulata is confined to freshwater despite being tolerant of brackish water. Poecilia reticulata may fail to occupy brackish water because of reduced tolerance to salinity or because P. picta competitively excludes them, and developing in brackish water could alter the dynamics of either scenario. To test this, we compared the salinity tolerances of both species in the absence of competition, reared P. reticulata individuals in freshwater or brackish water, and tested the consequences of developmental plasticity in experiments in..., This dataset includes an excel file containing all the data needed to carry out the analyses detailed in the manuscript and shown in full in Appendix S1 of the manuscript. The data is the raw input into the analyses conducted in the analysis. The first sheet in the excel file is a key and the other sheets contain data and are labeled according to the tables they relate to in Appendix S1 of the manuscript., , # Developmental plasticity does not improve performance during a species interaction: implications for species turnover

[https://doi.org/10.5061/dryad.vmcvdnd23](https://doi.org/10.5061/dryad.vmcvdnd23)

This dataset contains the input data for analyses examining specific growth rate in juvenile *Poecilia reticulata* and *Poecilia picta* (sheet entitled \"TablesS1-3\"), change in body condition in *P. reticulata* during competition experiments (sheets entitled \"TablesS4-6\" and \"TableS7\"), difference in aggressive behaviors between *P. reticulata* and *P. picta* competitors (sheets entitled \"TablesS8-10\" and \"TableS11\"), and total aggressive behavior counts in *P. reticulata* (sheet entitled \"TableS12\") and in *P. picta* (sheet entitled \"TableS13\").

## Description of the data and file structure

The first sheet of the excel file is a key explaining any non-obvious terms that relate to the various factors used in our analyses. The other sheets include the data and are organized by their c...

当物种互作（species interaction）的结果依赖于环境背景（例如沿环境梯度发生变化）时，物种互作可推动物种周转（species turnover）。表型可塑性（plasticity）可通过改变参与互作物种的环境耐受能力，改变这一动态过程。本研究探讨了两种广盐性鱼类（euryhaline fish）：孔雀鱼（*Poecilia reticulata*）与斑纹花鳉（*Poecilia picta*）之间的种间竞争互作如何受盐度急性响应与发育响应的影响。在特立尼达岛，尽管孔雀鱼能够耐受半咸水（brackish water）环境，但其自然分布仅局限于淡水水域。孔雀鱼无法占据半咸水水域的原因可能为其盐度耐受能力下降，或是受到斑纹花鳉的竞争排斥；而在半咸水中发育可改变这两种情境下的种群动态。为验证这一假说，我们在无竞争条件下比较了两种鱼类的盐度耐受能力，将孔雀鱼个体分别饲养于淡水或半咸水环境中，并通过实验探究发育可塑性（developmental plasticity）对上述两种情境的影响……

本数据集包含一个Excel文件，其中涵盖了论文中详述、并在论文附录S1中完整展示的所有分析所需数据。该数据为论文中所开展各项分析的原始输入数据集。Excel文件的首个工作表为数据说明表，其余工作表包含具体数据，并根据其对应论文附录S1中的表格进行命名。

# 《发育可塑性未提升物种互作中的适合度：对物种周转的启示》
[https://doi.org/10.5061/dryad.vmcvdnd23](https://doi.org/10.5061/dryad.vmcvdnd23)

本数据集包含以下分析所需的原始数据：检测幼龄孔雀鱼与斑纹花鳉的特定生长率的分析（对应工作表"TablesS1-3"）、竞争实验中孔雀鱼的身体状况变化分析（对应工作表"TablesS4-6"与"TableS7"）、孔雀鱼与斑纹花鳉竞争者间的攻击行为差异分析（对应工作表"TablesS8-10"与"TableS11"），以及孔雀鱼（对应工作表"TableS12"）与斑纹花鳉（对应工作表"TableS13"）的总攻击行为计数数据。

## 数据与文件结构说明
Excel文件的首个工作表为术语说明表，对本研究分析中所使用的各类非直观相关因子进行解释；其余工作表包含具体数据，并按……