Crossing experiment and mating trial data for New Zealand Dolomedes undergoing introgression

Introgression is a highly influential process in evolution, where genes flow between species that are not fully reproductively isolated. Studies on introgression often focus on describing gene transfer and environmental changes that facilitate the meeting of species. However, the impact of mating systems and behaviour that facilitate gene transfer is less well-known. Dolomedes aquaticus and D. minor are sister species of fishing spiders undergoing one-way, geographically limited mitochondrial introgression, making them an excellent case study for the factors that promote and limit introgression. We used a combination of field observations and crossing experiments to systematically investigate potential pre-fertilisation barriers that could limit introgression and explain the one-way and geographic barriers to introgression in these species. We found that habitat overlap and timing of reproductive maturity were not likely to be important limiting factors to introgression. However, behavi..., , , # Crossing experiment and mating trial data for New Zealand dDolomedes undergoing introgression

[https://doi.org/10.5061/dryad.66t1g1kb3](https://doi.org/10.5061/dryad.66t1g1kb3)

## Description of the data and file structure

Included here are crossing experiment and mating trial results from the accompanying paper. Also included are the data for the subset of weighed spiders, and the field data from the Waipara monitoring site. Metadata files have been included for all data files.

Crossing_Experiments_Southland_Merged.csv = Data from crossing experiments with spiders collected from Southland (Introgression Zone)

Minor_mating_trials_Merged.csv = Data from mating trials of Dolomedes minor

Canterbury_Crossing_Experiment_Merged.csv = Data from crossing experiments with spiders collected from Cantuerbury (Outside Introgression Zone)

Aqauticus_Mating_Trials_Merged.csv = Data from mating trials of Dolomedes aquaticus

\"mating_trial___crossing_experiment_metadata\" = Metadata for above f...