DOI: 10.5061/dryad.jdfn2z3kd
title: Data for: Anthropogenic light impacts life-history traits and induces a trade-off in female field crickets

description: Human-induced rapid environmental changes introduce animals to novel
 selection pressures that may impact how individuals allocate resources to
 life-history traits. One pervasive anthropogenic stressor, artificial
 light at night (ALAN), extends into remote areas and masks the day:night
 cycles to which animals are attuned. Here we ask how animals use this
 environmental input to dictate their investment in survival and
 reproductive traits and whether they must trade off investment in these
 traits in female Gryllus veletis field crickets. Using the second
 generation of field-collected individuals from a location absent from
 ALAN, we reared females from the antepenultimate instar through adulthood
 in either a control environment or one with ALAN. We then measured their
 investment in survival through two aspects of immunity, encapsulation and
 lysozyme activity, and their reproductive investment as the number of eggs
 within a female. We found that ALAN reduced one aspect of immunity,
 lysozyme activity, and reproductive investment. Further, there was a
 negative trade-off in investment in encapsulation and reproduction, an
 investment cost that was not present in females reared without ALAN. Our
 results suggest a two-fold cost of ALAN on females: one on investment in
 individual traits and another on a trade-off between them. These
 maladaptive responses to ALAN could substantially impact natural
 populations in the short term, and whether populations could respond in
 the long term remains an open question.
description: # Data for: Anthropogenic light impacts life-history traits and induces a
 trade-off in female field crickets This README_ALANfemaletrade-off.txt
 file was generated on 2024-07-16 by Darren Rebar ## GENERAL INFORMATION 1.
 Title of Dataset: Data for: Anthropogenic light impacts life-history
 traits and induces a trade-off in female field crickets 2. Author
 Information A. Principal Investigator Contact Information Name: Darren
 Rebar Institution: Emporia State University Address: 1 Kellogg Circle,
 Campus Box 4050, Emporia KS 66801 Email:
 [drebar@emporia.edu](mailto:drebar@emporia.edu) 3. Data collected from
 2020-08-01 to 2021-04-01 4. Information about the geographic location of
 data collection: data generated from the second generation of laboratory
 population established from individuals collected at the Ross Natural
 History Reservation (38° 29´ N, 96° 20´ W) ## DATA & FILE OVERVIEW 1.
 File List: [ALAN female trade-off.csv] contains all data that support the
 findings in "Anthropogenic light impacts life-history traits and
 induces a trade-off in female field crickets" by Rebar, Xiao, and
 Murdock. 2. Date that file was created: 2024-07-16 ## SHARING/ACCESS
 INFORMATION 1. Licenses/restrictions placed on the data: There are no
 restrictions ## METHODOLOGICAL INFORMATION 1. Description of methods used
 for collection/generation of data: All details on data collection can be
 found in the paper "Anthropogenic light impacts life-history traits
 and induces a trade-off in female field crickets" by Rebar, Xiao, and
 Murdock. 2. Methods for processing the data: Data come from behavioral
 assays, imuunoassays, body measurements, and counts. Units of each
 variable below. ## DATA-SPECIFIC INFORMATION FOR: \[Female anthro
 data.csv] 1. Variable List: * Environment: treatment in which an
 individual was reared * Replicate: replicated chamber for each treatment *
 Female: identity attributed by experimenters to each female * Morph: wing
 phenotype of female (S = short-winged) * Pro width: width in mm of the
 pronotum of the adult female * Encapsulation response: the mean darkness
 score of an implant inserted into a female for 48 hours (0-255
 light-to-dark) * Lysozyme activity: lysozyme-like activity of haemolymph,
 measured turbidimetrically as the change in absorbance at 490 nm of a
 solution of the bacteria Micrococcus lysodeikticus over a period of 60 min
 * Number of eggs: number of eggs present within a female at 22-d
 post-adult molt 2. Missing data: cells left blank where data were not
 collected