This readme.txt file was generated on Jan 12, 2022 by DRUM Recommended citation for the data: Bulgarella, M; Heimpel, George E; Lincango, MP; Lahuatte, PF; Oliver, JD; Cahuana, A; Ramírez, IE; Sage, R; Colwitz, AJ; Freund, DA; Miksanek, JR; Moon, RD; Causton, CE. (2022). Bulgarella et al. Philornis Pterin Data. Retrieved from the Data Repository for the University of Minnesota, https://doi.org/10.13020/7zyy-0125. ------------------- GENERAL INFORMATION ------------------- 1. Title of Dataset: Bulgarella et al. Philornis Pterin Data 2. Author Information Principal Investigator Contact Information Name: George E Heimpel Institution: Department of Entomology, University of Minnesota Address: 1980 Folwell Ave. St. Paul, MN 55108 Email: heimp001@umn.edu ORCID: Associate or Co-investigator Contact Information Name: M Bulgarella Institution: School of Biological Sciences, Victoria University of Wellington Address: 21 Kelburn Parade, Wellington, 6012, New Zealand Email: ORCID: 0000-0002-7582-8529 3. Date published or finalized for release: January 12, 2022 4. Date of data collection: 2015-02-01 to 2020-02-18 5. Geographic location of data collection (where was data collected?): Galapagos Islands, Ecuador 6. Information about funding sources that supported the collection of the data: Sponsorship: Galapagos Conservancy, International Community Foundation (with a grant awarded by the Leona M. and Harry B. Helmsley Charitable Trust), Lindblad Expeditions-National Geographic Fund 7. Overview of the data (abstract): Parasites of seasonally available hosts must persist through times of the year when hosts are unavailable. In tropical environments, host availability is often linked to rainfall, and adaptations of parasites to dry periods remain understudied. The bird-parasitic fly Philornis downsi has invaded the Galapagos Islands and is causing high mortality of Darwin’s finches and other bird species, and the mechanisms by which it was able to invade the islands successfully are of great interest to conservationists. In the dry lowlands, this fly persists over a seven-month cool season when availability of hosts is very limited. We tested the hypothesis that adult flies could survive from one bird-breeding season until the next by using a pterin-based age-grading method to estimate the age of P. downsi captured during and between bird-breeding seasons. This study showed that significantly older flies were present towards the end of the cool season, with ~5% of captured females exhibiting estimated ages greater than seven months. However, younger flies also occurred during the cool season suggesting that some reproduction occurs when host availability is low. We discuss the possible ecological mechanisms that could allow for a such a mixed strategy. -------------------------- SHARING/ACCESS INFORMATION -------------------------- 1. Licenses/restrictions placed on the data: Attribution-NonCommercial-NoDerivs 3.0 United States http://creativecommons.org/licenses/by-nc-nd/3.0/us/ 2. Links to publications that cite or use the data: Bulgarella M, Lincango MP, Lahuatte PF, Oliver JD, Cahuana A, Ramírez IE, Sage R, Colwitz AJ, Freund DA, Miksanek JR, Moon RD, Causton CE & Heimpel GE. 2022. Persistence of the invasive bird-parasitic fly Philornis downsi over the host interbreeding period in the Galapagos Islands. Scientific Reports https://doi.org/10.1038/s41598-022-06208-5 3. Was data derived from another source? No If yes, list source(s): 4. Terms of Use: Data Repository for the U of Minnesota (DRUM) By using these files, users agree to the Terms of Use. https://conservancy.umn.edu/pages/drum/policies/#terms-of-use --------------------- DATA & FILE OVERVIEW --------------------- This submission contains 7 CSV or text files with data presented and analyzed in the manuscript by Bulgarella et al. titled, 'Persistence of the invasive bird-parasitic fly Philornis downsi over the host interbreeding period in the Galapagos Islands'. 1. File List A. Filename: Bulgarella et al. pupal categories.csv Short description: Organization of collected puparia into categories Size: 12.47Kb Type: CSV file B. Filename: Bulgarella et al. pupal dissections.csv Short description: Organization of dissected puparia into categories Size: 53.69Kb Type: CSV file C. Filename: Bulgarella et al. pterin LabvField.csv Short description: Data showing pterin calibration in a lab versus field setting Size: 1.235Kb Type: CSV file D. Filename: Bulgarella et al. pterin Fig 3a.csv Short description: Data on estimates for age of field-caught flies for Fig. 3a Size: 21.81KB Type: CSV file E. Filename: Bulgarella et al. pterin field ages.csv Short description: Data on estimates for for age of field-caught flies for generalized additive modeling (GAM) analyses Size: 52.25Kb Type: CSV file F. Filename: Bulgarella et al. pterin dissection data.csv Short description: Data on egg loads and spermathecal fullness of female flies Size: 15.52Kb Type: CSV file G. Filename: WeekyPrecipsForR.txt Short description: Precipitation data at field site in Santa Cruz Island, Galapagos Islands Size: 6.838Kb Type: Text file 2. Relationship between files: 3. Description of methods used for collection/generation of data: ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: Bulgarella et al. pupal dissections.csv ----------------------------------------- 1. Number of variables: 19 2. Number of cases/rows: 149 3. Missing data codes: Code/symbol Definition Code/symbol Definition 4. Variable List Date Day Month jd MonthCode Sample Absorbance Abs1000 Age_Est Head Locality MatEggs ImEggs FullSp Mated Mate01 Comments lnMatEggs jd2