DOI: 10.5061/dryad.931zcrjvg
title: Data from: Form-assortative mating behaviors of individuals from parasitic and non-parasitic populations of Arctic lamprey (Lethenteron camtschaticum)

description: Evolutionary theory predicts that assortative mating is crucial for
 sympatric speciation by generating reproductive isolation between
 diverging populations. Here, we investigate the potential of
 form-assortative mating, an assumed mating pattern in lampreys, for
 sympatric speciation. By continuously recording mating activity between
 anadromous and freshwater-resident forms of L. camtschaticum that
 greatly differ in body size, we show that lampreys tend to mate with
 individuals of similar size in experimental conditions. However, we
 highlight that this pattern does not result from a choice of same-form
 partner but is the result of the simultaneous action of a preference of
 males – whatever their size – for large anadromous females, a higher
 competitive ability of aggressive males and physical constraints on
 heteroform pairs. Moreover, we do not advocate that sympatric speciation,
 as the sole consequence of form-assortative mating through sexual
 selection, is a plausible mechanism for the diversification of lampreys as
 a significant number of sneaking behaviors were observed in
 freshwater-resident males toward large anadromous females. Broader
 attention should be given to mechanisms other than sexual selection that
 may lead to form-assortative mating, such as variations in spatial or
 temporal distribution of alternative forms during reproductive season.
description: We provide the raw data files
 ("Ind.xlsx","data_pair.xlsx") and script file
 ("BE_script.R") to process the raw data, make plots, and run the
 statistics.
description: # Data from: Form-assortative mating behaviors of individuals from
 parasitic and non-parasitic populations of Arctic lamprey (Lethenteron
 camtschaticum)
 [https://doi.org/10.5061/dryad.931zcrjvg](https://doi.org/10.5061/dryad.931zcrjvg) ## Description of the data and file structure R script, and data used to run the plots and analysis presented in: Daupagne, L., Furusawa, C., Mieda, H., Kishida, O., Lasne, E., Tentelier, C. & I. Koizumi. Form-assortative mating behaviors of individuals from parasitic and non-parasitic populations of Arctic lamprey (*Lethenteron camtschaticum*). *Behavioral Ecology*. ### Files and variables #### File: BE\_script.R **Description:** the only file that you need to open. Loads datasets and formats data for running the analysis and plotting figures. All of the files in must be within your working directory for the analysis to work. #### File: Ind.xlsx **Description:** file containing data on individual ID **Variables:** Subject= code used to identify the individuals. Lieu= mating group  (G1/G2), Origin= sampling site (L1/L2), Sexe (M/F), Type= anadromous vs resident (A/R), Weight (g), Length (cm). #### File: data\_pair.xlsx **Description:** file containing raw data on individual behavior. Each row is a behavior. Please refer to the BORIS user guide if precisions about the variables computed are needed: [https://www.boris.unito.it/user_guide/export_events/#export-aggregated-events](https://www.boris.unito.it/user_guide/export_events/#export-aggregated-events). **Variables:**  Observation id. Observation date (and time). Media file. Total length (in seconds, the duration of observation in base of the selected time interval).  FPS (frame/s, for video file, number of images per second). Lieu= mating group  (G1/G2), Behavior. Behavioral category. Modifiers (ind that perform the behavior). Behavior type (STATE/POINT). Start(seconds). Stop(seconds). Duration (seconds, duration of the event for STATE events). Comment start (empty cells). Comment stop (empty cells). data_start (date and time of start of behavior). date_end (date and time of end of behavior). hour (hour of start of behavior). Subject (ind to whom the behavior is directed), Subject2 (ind that perform the behavior), SexeFocal (sexe of the Subject, 0=male,1=female), Sexe2 (sexe of the Subject2/Modifer, 0=male,1=female).