DOI: 10.5061/dryad.b0ck8
title: Data from: Delayed dispersal and prolonged brood care in a family-living beetle

description: Delayed juvenile dispersal is an important prerequisite for the evolution
 of family-based social systems, such as cooperative breeding and
 eusociality. In general, young adults forego dispersal if there are
 substantial benefits to remaining in the natal nest and/or the likelihood
 of dispersing and breeding successfully is low. We investigate some
 general factors thought to drive delayed juvenile dispersal in the horned
 passalus beetle, a family-living beetle in which young adults remain with
 their families in their natal nest for several months before dispersing.
 Fine scale population genetic structure indicated high gene flow between
 nest sites, suggesting that constraints on mobility are unlikely to
 explain philopatry. Young adults do not breed in their natal log and
 likely disperse before reaching breeding age, suggesting that they do not
 gain direct reproductive benefits from delayed dispersal. We also examined
 several ways in which parents might incentivize delayed dispersal by
 providing prolonged care to adult offspring. Although adult beetles
 inhibit fungal growth in the colony by manipulating both the nest-site and
 deceased conspecifics, this is unlikely to be a major explanation for
 family living since both parents and adult offspring seem capable of
 controlling fungal growth. Adult offspring that stayed with their family
 groups also neither gained more mass nor experienced faster exoskeleton
 development than those experimentally removed from their families. The
 results of these experiments suggest that our current understanding of the
 factors underlying prolonged family living may be insufficient to explain
 delayed dispersal in at least some taxa, particularly insects.
description: Relatedness_OdisjunctusThis spreadsheet contains a summary sheet of all relatedness values between all individuals sequenced (first sheet). All other sheets contain the data that was used in the R-script “LogRelatedness_wilcoxon_sim.R” to compare relatedness between individuals residing in the same log vs those residing in different logs across different categories of individuals. Simply copy and paste each sheet in a separate .csv document and rename the file appropriately to analyze data and replicate the results of the paper.LogRelatedness_wilcoxon_simThis file contains the R script used to analyze relatedness between different categories of individuals within and between logs using permuted Wilcoxon Rank Sum test following the methods of Wolf & Trillmich (2008). Use data from “Relatedness_Odisjunctus.xls” to create .csv files to run with this code to replicate results.figure4dataData used to create figure 4 (within and between log relatedness)figure4_RCODER-code used to create figure 4 – use with “figure4data.csv”beetleweightLongitudinal data of beetle weight through time. Individuals identified by solitary treatment or by group and leg modification (e.g., G1LMT would indicate a beetle from group 1 that has had its left mesal tarsus clipped).beetlespecLongitudinal data of beetle reflectance (spec) through time. Like “beetleweight.xls”, individuals identified by solitary treatment or by group and leg modification (e.g., G1LMT would indicate a beetle from group 1 that has had its left mesal tarsus clipped).fungal growth summarySummary of fungal growth in petri dish experiment containing a frass and a deceased beetle either alone or with a living beetle.Odontotaenius_SNPdataAll SNPs which passed our filtering processes are contained in this file, which is in SPAGeDi format and includes a distance matrix in meters at the end of the file.Odontotaenius_GPScoordsThis file contains GPS coordinates for each of the six logs we sampled in the field.