DOI: 10.5061/dryad.94r31
title: Data from: Quantifying dispersal of a non-aggressive saprophytic bark beetle

description: We performed a mark-recapture experiment to examine patterns of adult
 dispersal in Hylurgus ligniperda (F.) (Coleoptera: Scolytinae), a
 non-aggressive, saprophytic bark beetle. The experiment took place in a
 clearcut pine, Pinus radiata D. Don forest in the central North Island,
 New Zealand, during February to May 2014. Both flight-naïve and
 flight-experienced H. ligniperda were released in the center of a circular
 trap grid that extended to 960 m with 170 or 200 panel traps baited with
 alpha-pinene and ethanol. Of the 18,464 marked H. ligniperda in 12
 releases, 9,209 (49.9%) of the released beetles flew, and 96 (1.04%) of
 the beetles that flew were recaptured. Males and females were recaptured
 at all distances. The recapture of flight-experienced beetles declined
 with dispersal distance, and mechanistic diffusion models showed
 heterogeneous dispersal tendencies within the population. Our best model
 estimates that 46% (CI95: 19% - 63%) of flight-experienced beetles
 disperse &gt; 1 km, and 1.6% &gt; 5 km (CI95: 0.02% - 11%). Equal
 recapture of flight-naive beetles at all distances suggests that emerging
 H. ligniperda may require a period of flight to initiate chemotropic
 orientation behavior and subsequent attraction to traps. Quantitative
 estimation of the distribution of dispersal distances can be used to model
 the dispersal process of bark beetles and contributes to the management of
 phytosanitary risks. For instance, combining landscape knowledge of source
 populations with dispersal processes facilitates estimation of pest
 pressure at economically sensitive areas such as harvests and timber
 storage sites. Quantitative dispersal estimates also inform pest risk
 assessments by predicting spread rates for H. ligniperda that has proven
 establishment capabilities in other countries.
description: Meteorological
 DataAll weather data
 recorded at time of release-recapture experimentsMetData.txtHylurgus ligniperda release-recapture experiment - dataThis file contains all the raw data relative to the release-recapture experiment performed with marked Hylurgus ligniperda (Coleoptera:Scolytinae), in 2014 in Kaingaroa, New Zealand.Nth_Island_Dispersal_Trial_Data_Sheet.xlsxImport of dispersal dataThis R script imports the raw data relative to the release-recapture experiment performed with marked Hylurgus ligniperda (Coleoptera:Scolytinae), in 2014 in Kaingaroa, New Zealand. From an excel spreadsheet (insect collections) and a text file (weather data), also available on this repository.Dispersal import - Commented version for repository.RAnalysis of dispersal dataThis R script analyses the data relative to the release-recapture experiment performed with marked Hylurgus ligniperda (Coleoptera:Scolytinae), in 2014 in Kaingaroa, New Zealand. Data is imported from other R script "Dispersal import", also available on this repository.Dispersal analysis and prediction - Commented version for repository.RScripts run 23 Feb 2017This file contains all output generated by the R scripts "Import of dispersal data" and "Analysis of dispersal".