Morphometric comparisons and novel observations of diurnal and low-light-foraging bees

Low-light adapted bees are substantially understudied components of the bee fauna, particularly in Australia. Whilst several species in Australia are thought to be adapted to low-light conditions, explicit records of these taxa actually foraging at twilight or night are absent from the scientific li...

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Main Authors: James B. Dorey, Erinn P. Fagan-Jeffries, Mark I. Stevens, Michael P. Schwarz
Format: Article
Language:English
Published: Pensoft Publishers 2020-10-01
Series:Journal of Hymenoptera Research
Online Access:https://jhr.pensoft.net/article/57308/download/pdf/
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author James B. Dorey
Erinn P. Fagan-Jeffries
Mark I. Stevens
Michael P. Schwarz
author_facet James B. Dorey
Erinn P. Fagan-Jeffries
Mark I. Stevens
Michael P. Schwarz
author_sort James B. Dorey
collection DOAJ
description Low-light adapted bees are substantially understudied components of the bee fauna, particularly in Australia. Whilst several species in Australia are thought to be adapted to low-light conditions, explicit records of these taxa actually foraging at twilight or night are absent from the scientific literature. We present the first observations of Australian bees foraging in low-light conditions as well as the first evidence of low-light foraging behaviour in the colletid bee subfamily, Hylaeinae. Using morphometrics of Australian and more broadly-distributed diurnal, facultative low-light and obligate low-light adapted bees, we explore the use of morphological traits to objectively assess possible low-light behaviour and corroborate low-light collection events. Our results show that it is possible to morphologically distinguish between diurnal and low-light adapted bees, and that there is a spectrum of characters that are associated with low light conditions. We use GIS to show that low-light adapted species occur mostly in the tropics, but that some species have subtropical, arid and even temperate distributions. As low-light foraging behaviour in bees is infrequently reported, it appears that low-light foraging behaviour is more common than currently appreciated, highlighting the need for extended bee-sampling periods and more consistent collection data to increase the understanding of this little-understood aspect of bee behaviour.
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spelling doaj.art-5d450b958bbc4f5fa45daf998a848c4a2022-12-22T00:36:21ZengPensoft PublishersJournal of Hymenoptera Research1314-26072020-10-017911714410.3897/jhr.79.5730857308Morphometric comparisons and novel observations of diurnal and low-light-foraging beesJames B. Dorey0Erinn P. Fagan-Jeffries1Mark I. Stevens2Michael P. Schwarz3Flinders UniversityUniversity of AdelaideUniversity of South AustraliaFlinders UniversityLow-light adapted bees are substantially understudied components of the bee fauna, particularly in Australia. Whilst several species in Australia are thought to be adapted to low-light conditions, explicit records of these taxa actually foraging at twilight or night are absent from the scientific literature. We present the first observations of Australian bees foraging in low-light conditions as well as the first evidence of low-light foraging behaviour in the colletid bee subfamily, Hylaeinae. Using morphometrics of Australian and more broadly-distributed diurnal, facultative low-light and obligate low-light adapted bees, we explore the use of morphological traits to objectively assess possible low-light behaviour and corroborate low-light collection events. Our results show that it is possible to morphologically distinguish between diurnal and low-light adapted bees, and that there is a spectrum of characters that are associated with low light conditions. We use GIS to show that low-light adapted species occur mostly in the tropics, but that some species have subtropical, arid and even temperate distributions. As low-light foraging behaviour in bees is infrequently reported, it appears that low-light foraging behaviour is more common than currently appreciated, highlighting the need for extended bee-sampling periods and more consistent collection data to increase the understanding of this little-understood aspect of bee behaviour.https://jhr.pensoft.net/article/57308/download/pdf/
spellingShingle James B. Dorey
Erinn P. Fagan-Jeffries
Mark I. Stevens
Michael P. Schwarz
Morphometric comparisons and novel observations of diurnal and low-light-foraging bees
Journal of Hymenoptera Research
title Morphometric comparisons and novel observations of diurnal and low-light-foraging bees
title_full Morphometric comparisons and novel observations of diurnal and low-light-foraging bees
title_fullStr Morphometric comparisons and novel observations of diurnal and low-light-foraging bees
title_full_unstemmed Morphometric comparisons and novel observations of diurnal and low-light-foraging bees
title_short Morphometric comparisons and novel observations of diurnal and low-light-foraging bees
title_sort morphometric comparisons and novel observations of diurnal and low light foraging bees
url https://jhr.pensoft.net/article/57308/download/pdf/
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