Data and code from: Parasites alter host community structure in a natural experiment

Parasites can profoundly alter host communities. However, the impact of parasites can vary from one community to another. Understanding why the impact of parasites varies across communities is challenging because it requires (i) separating the direct effects of the parasite on the host species from the indirect effects it exerts through the ecological interactions among the hosts, and (ii) identifying how the presence of one host alters rates of infection in another. Freshwater fish communities in Trinidad have recently been invaded by a generalist parasitic nematode. This event, combined with our long-term mark-recapture studies of these communities, which began long before the invasion, presented a replicated natural experiment. In this experiment, we measured how host demographic rates responded to two “treatments”: stage of parasite establishment (before, and 1-2 years, 3-5 years, and 6-8 years after invasion) and type of community (killifish-guppy communities and killifish-only com..., , # Data and code from: Parasites alter host community structure in a natural experiment

Data and code to reproduce the analyses and figures presented in the manuscript \"Parasites alter host community structure in a natural experiment,\" published in the Journal of Animal Ecology.  The datasets include mark-recapture observations of guppies and killifish from four streams in Trinidad. There is another dataset that includes dissection data from guppies and killifish from several more streams in Trinidad. Please see the READ-ME.txt file for details on the contents of the code and data files.

### OVERVIEW

The zip file: killifish-guppy-parasite-mark-recapture-final.zip

contains the data and R code to reproduce the analyses in the manuscript:

##### “Parasites alter host community structure in a natural experiment”

published in the Journal of Animal Ecology

by Tomos Potter, Ryan S. Mohammed, Joshua F. Goldberg, Joseph Travis, David N. Reznick, and Ron D. Bassar

...which is a paper about ..., ,

寄生虫可显著改变宿主群落。然而，寄生虫的影响因群落而异。阐明寄生虫的影响在不同群落间存在差异的原因颇具挑战，因为这需要（i）将寄生虫对宿主物种的直接效应，与其通过宿主间生态互作产生的间接效应区分开来；（ii）明确某一宿主的存在如何改变另一宿主的感染率。近期，特立尼达的淡水鱼群落被一种广食性寄生线虫（parasitic nematode）入侵。这一事件，加上我们在入侵前就已开展的针对这些群落的长期标记重捕（mark-recapture）研究，构成了一个可重复的自然实验。在该实验中，我们测定了宿主种群动态率对两种"处理"的响应：寄生虫定植阶段（入侵前、入侵后1-2年、3-5年及6-8年）与群落类型（鳉鱼（killifish）-孔雀鱼（guppy）群落，以及仅含鳉鱼的群落……）。

# 数据与代码来源：《一项自然实验中寄生虫改变宿主群落结构》
本数据集包含发表于《动物生态学杂志》的论文《一项自然实验中寄生虫改变宿主群落结构》的分析与图表复现所需的数据及代码。数据集涵盖特立尼达四条溪流中孔雀鱼与鳉鱼的标记重捕观测数据。另有一套数据集包含特立尼达更多溪流中孔雀鱼与鳉鱼的解剖数据。有关代码与数据文件的详细内容，请参阅READ-ME.txt文件。

### 概览
压缩包killifish-guppy-parasite-mark-recapture-final.zip包含复现该论文分析所需的数据与R代码：

##### 《一项自然实验中寄生虫改变宿主群落结构》
发表于《动物生态学杂志》
作者：Tomos Potter、Ryan S. Mohammed、Joshua F. Goldberg、Joseph Travis、David N. Reznick及Ron D. Bassar

……这是一篇关于……的论文，