Bryan R Helm
Bryan R Helm
Statistical Geneticist @ Vanderbilt University Medical Center
Verified email at
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Metamorphosis is induced by food absence rather than a critical weight in the solitary bee, Osmia lignaria
BR Helm, JP Rinehart, GD Yocum, KJ Greenlee, JH Bowsher
Proceedings of the National Academy of Sciences 114 (41), 10924-10929, 2017
Mass and volume growth of an insect tracheal system within a single instar
BR Helm, G Davidowitz
Journal of Experimental Biology 216 (24), 4703-4711, 2013
Percent lipid is associated with body size but not task in the bumble bee Bombus impatiens
MJ Couvillon, JM Jandt, J Bonds, BR Helm, A Dornhaus
Journal of Comparative Physiology A 197 (11), 1097-1104, 2011
The geometric framework for nutrition reveals interactions between protein and carbohydrate during larval growth in honey bees
BR Helm, GP Slater, A Rajamohan, GD Yocum, KJ Greenlee, JH Bowsher
Biology open 6 (6), 872-880, 2017
Extended hypoxia in the alfalfa leafcutting bee, Megachile rotundata, increases survival but causes sub-lethal effects
H Abdelrahman, JP Rinehart, GD Yocum, KJ Greenlee, BR Helm, ...
Journal of insect physiology 64, 81-89, 2014
Predicting performance and plasticity in the development of respiratory structures and metabolic systems
KJ Greenlee, KL Montooth, BR Helm
Integrative and comparative biology 54 (2), 307-322, 2014
Micro-computed tomography of pupal metamorphosis in the solitary bee Megachile rotundata
BR Helm, S Payne, JP Rinehart, GD Yocum, JH Bowsher, KJ Greenlee
Arthropod structure & development 47 (5), 521-528, 2018
Comparison of the chemical compositions of the cuticle and dufour’s gland of two solitary bee species from laboratory and field conditions
TL Pitts-Singer, MM Hagen, BR Helm, S Highland, JS Buckner, WP Kemp
Journal of chemical ecology 43 (5), 451-468, 2017
Evidence of a hemolymph-born factor that induces onset of maturation in Manduca sexta larvae
BR Helm, G Davidowitz
Journal of insect physiology 78, 78-86, 2015
A common framework for the regulation of growth and size: Stepping away from the trees to see the forest
G Davidowitz, BR Helm
Integrative Organismal Biology, 207-218, 2015
Phenotypic integration in an extended phenotype: among‐individual variation in nest‐building traits of the alfalfa leafcutting bee (Megachile rotundata)
R Royauté, ES Wilson, BR Helm, RE Mallinger, J Prasifka, KJ Greenlee, ...
Journal of evolutionary biology 31 (7), 944-956, 2018
Nutrient effects on energy allocation among body parts within an individual
G Davidowitz, AD Daws, AF Moore, BR Helm, RC Stillwell
Integrative and Comparative Biology 54, E48-E48, 2014
An Ontogenetic Perspective on the Timing of Maturation in Insects with Special Consideration of Physical and Resource Thresholds
BR Helm
The University of Arizona., 2013
Do resource thresholds play a role in the onset of maturation-a key life history transition?
BR Helm, G Davidowitz
Integrative and Comparative Biology 52, E76-E76, 2012
Body and Wing Allometries Reveal Flight-Fecundity Tradeoff in Response to Larval Provisioning in Osmia lignaria (Hymenoptera: Megachilidae)
BR Helm, MA Baldwin, JP Rinehart, GD Yocum, KJ Greenlee, ...
Journal of Insect Science 21 (3), 11, 2021
Sublethal effects of neonicotinoids on nesting in the alfalfa leafcutter bee (Megachile rotundata)
M Palmersheim, MG Park, BR Helm, J Bowsher, JP Rinehart
Entomology 2018, 2018
Building a bigger, better bee: Insights from developmental studies and implications for pollination
BR Helm
2018 North Central Branch Meeting, 2018
Flight biomechanics of developmentally-induced size variation in the solitary bee Osmia lignaria
BR Helm, JP Rinehart, GD Yocum, KJ Greenlee, JH Bowsher
Meeting Abstract, 3-7, 2018
Physiological and molecular regulation of metamorphic commitment in the solitary bee Osmia lignaria
LM Agosto, VL Bentley, BR Helm, JE Holthusen, JP Rinehart, GD Yocum, ...
Meeting Abstract, 3-7, 2018
Sub-lethal effects of neonicitinoids on the alfalfa leafcutter bee, Megachile rotundata
MC Palmersheim, BR Helm, R Royaute, R Mallinger, GD Yocum
Meeting Abstract, 3-7, 2018
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