Thermally moderated firefly activity is delayed by precipitation extremes

The timing of events in the life history of temperate insects is most typically primarily cued by one of two drivers: photoperiod or temperature accumulation over the growing season. However, an insect's phenology can also be moderated by other drivers like rainfall or the phenology of its host...

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Main Authors: Sara L. Hermann, Saisi Xue, Logan Rowe, Elizabeth Davidson-Lowe, Andrew Myers, Bahodir Eshchanov, Christie A. Bahlai
Format: Article
Language:English
Published: The Royal Society 2016-01-01
Series:Royal Society Open Science
Subjects:
Online Access:https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.160712
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author Sara L. Hermann
Saisi Xue
Logan Rowe
Elizabeth Davidson-Lowe
Andrew Myers
Bahodir Eshchanov
Christie A. Bahlai
author_facet Sara L. Hermann
Saisi Xue
Logan Rowe
Elizabeth Davidson-Lowe
Andrew Myers
Bahodir Eshchanov
Christie A. Bahlai
author_sort Sara L. Hermann
collection DOAJ
description The timing of events in the life history of temperate insects is most typically primarily cued by one of two drivers: photoperiod or temperature accumulation over the growing season. However, an insect's phenology can also be moderated by other drivers like rainfall or the phenology of its host plants. When multiple drivers of phenology interact, there is greater potential for phenological asynchronies to arise between an organism and those with which it interacts. We examined the phenological patterns of a highly seasonal group of fireflies (Photinus spp., predominantly P. pyralis) over a 12-year period (2004–2015) across 10 plant communities to determine whether interacting drivers could explain the variability observed in the adult flight activity density (i.e. mating season) of this species. We found that temperature accumulation was the primary driver of phenology, with activity peaks usually occurring at a temperature accumulation of approximately 800 degree days (base 10°C); however, our model found this peak varied by nearly 180 degree-day units among years. This variation could be explained by a quadratic relationship with the accumulation of precipitation in the growing season; in years with either high or low precipitation extremes at our study site, flight activity was delayed. More fireflies were captured in general in herbaceous plant communities with minimal soil disturbance (alfalfa and no-till field crop rotations), but only weak interactions occurred between within-season responses to climatic variables and plant community. The interaction we observed between temperature and precipitation accumulation suggests that, although climate warming has the potential to disrupt phenology of many organisms, changes to regional precipitation patterns can magnify these disruptions.
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spelling doaj.art-96bf9ecbb5f14454bb82f0296ae44a272022-12-21T18:00:33ZengThe Royal SocietyRoyal Society Open Science2054-57032016-01-0131210.1098/rsos.160712160712Thermally moderated firefly activity is delayed by precipitation extremesSara L. HermannSaisi XueLogan RoweElizabeth Davidson-LoweAndrew MyersBahodir EshchanovChristie A. BahlaiThe timing of events in the life history of temperate insects is most typically primarily cued by one of two drivers: photoperiod or temperature accumulation over the growing season. However, an insect's phenology can also be moderated by other drivers like rainfall or the phenology of its host plants. When multiple drivers of phenology interact, there is greater potential for phenological asynchronies to arise between an organism and those with which it interacts. We examined the phenological patterns of a highly seasonal group of fireflies (Photinus spp., predominantly P. pyralis) over a 12-year period (2004–2015) across 10 plant communities to determine whether interacting drivers could explain the variability observed in the adult flight activity density (i.e. mating season) of this species. We found that temperature accumulation was the primary driver of phenology, with activity peaks usually occurring at a temperature accumulation of approximately 800 degree days (base 10°C); however, our model found this peak varied by nearly 180 degree-day units among years. This variation could be explained by a quadratic relationship with the accumulation of precipitation in the growing season; in years with either high or low precipitation extremes at our study site, flight activity was delayed. More fireflies were captured in general in herbaceous plant communities with minimal soil disturbance (alfalfa and no-till field crop rotations), but only weak interactions occurred between within-season responses to climatic variables and plant community. The interaction we observed between temperature and precipitation accumulation suggests that, although climate warming has the potential to disrupt phenology of many organisms, changes to regional precipitation patterns can magnify these disruptions.https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.160712lightning buglampyridaephenologyecoinformaticslong-term ecological research
spellingShingle Sara L. Hermann
Saisi Xue
Logan Rowe
Elizabeth Davidson-Lowe
Andrew Myers
Bahodir Eshchanov
Christie A. Bahlai
Thermally moderated firefly activity is delayed by precipitation extremes
Royal Society Open Science
lightning bug
lampyridae
phenology
ecoinformatics
long-term ecological research
title Thermally moderated firefly activity is delayed by precipitation extremes
title_full Thermally moderated firefly activity is delayed by precipitation extremes
title_fullStr Thermally moderated firefly activity is delayed by precipitation extremes
title_full_unstemmed Thermally moderated firefly activity is delayed by precipitation extremes
title_short Thermally moderated firefly activity is delayed by precipitation extremes
title_sort thermally moderated firefly activity is delayed by precipitation extremes
topic lightning bug
lampyridae
phenology
ecoinformatics
long-term ecological research
url https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.160712
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