Global patterns of nuclear and mitochondrial genetic diversity in marine fishes

Genetic diversity is a fundamental component of biodiversity. Examination of global patterns of genetic diversity can help highlight mechanisms underlying species diversity, though a recurring challenge has been that patterns may vary by molecular marker. Here, we compiled 6862 observations of genetic diversity from 492 species of marine fish and tested among hypotheses for diversity gradients: the founder effect hypothesis, the kinetic energy hypothesis, and the productivity-diversity hypothesis. We fit generalized linear mixed effect models (GLMMs) and explored the extent to which various macroecological drivers (latitude, longitude, temperature (SST), and chlorophyll-a concentration) explained variation in genetic diversity. We found that mitochondrial genetic diversity followed geographic gradients similar to those of species diversity, being highest near the Equator, particularly in the Coral Triangle, while nuclear genetic diversity did not follow clear geographic patterns. Despit..., This dataset was collected via a literature search in Web of Science with the following keywords: fish microsatellite (marine OR ocean OR sea) and fish mtDNA (marine OR ocean OR sea). Only studies published before January 5, 2020, were included.
We retained studies that recorded genetic diversity (mitochondrial or nuclear) from wild marine fish populations. To do this, we first conducted a title/abstract filter by hand and then recorded data for each paper, following the guidelines listed in either msat_data_entry_instructions.md or mtDNA_data_entry_instructions.md., , # Global patterns of nuclear and mitochondrial genetic diversity in marine fishes

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This repository provides the data and scripts for all analyses in the associated paper. Data was gathered from a literature search in the Web of Science.

A complete list of all necessary software and packages (with version numbers) can be found at the bottom of this README.

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## Data

A list of the files read into R scripts for analyses. These include the CSV files where data from the literature search was originally recorded. Cells with missing information are infilled with *NA*.

* To respect the licenses and conditions of data reuse outlined by the data creators and managers of the primary data publications, as well as limit data reduplication, we have excluded the genetic diversity estimates (He, Hd, and pi) in each of the following datasets. All genetic diversity estimates are provided and freely accessible in the original publications (cited within each dataset), or upon request. Associa...