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AoB Plants

Title:		Intraspecific variation of scent and its impact on pollinators' preferences
Author(s):		Vega-Polanco M; Solis-Montero L; Rojas JC; Cruz-Lopez L; Alavez-Rosas D; Vallejo-Marin M;
Address:		"El Colegio de la Frontera Sur (ECOSUR), Unidad Tapachula, Carretera Antiguo Aeropuerto km 2.5, AP 36, Tapachula C.P. 30700, Chiapas, Mexico. Consejo Nacional de Humanidades, Ciencias y Tecnologias (CONAHCYT), Av. Insurgentes Sur 1582, Colonia Credito Constructor, Delegacion Benito Juarez, Ciudad de Mexico C.P. 03940, Mexico. Laboratorio de Ecologia de la Conducta de Artropodos, Instituto de Ecologia, Universidad Nacional Autonoma de Mexico, Circuito exterior s/n anexo al Jardin Botanico, Ciudad Universitaria, Ciudad de Mexico C.P. 04510, Mexico. Division of Plant Ecology and Evolution, Department of Ecology and Genetics, Evolutionary Biology Centre, Uppsala University, Norbyvagen 18 D, 752 36 Uppsala, Sweden"
Journal Title:		AoB Plants
Year:		2023
Volume:		20230721
Issue:		4
Page Number:		lad049 -
DOI:		10.1093/aobpla/plad049
ISSN/ISBN:		2041-2851 (Print) 2041-2851 (Electronic)
Abstract:		"Floral scents shape plant-pollinator interactions. Although populations of the same species can vary in their floral scent, little is known about how this variation affects pollinator visitation. In this study, we compare the scents emitted by buzz-pollinated Solanum rostratum (Solanaceae) in two areas of its distribution (Mexico and USA) and investigate how these differences in scent affect pollinator preferences and attraction. We determined the variation of floral volatile compounds using hexane extraction followed by gas chromatography coupled with spectrometry. We also performed a field cage multiple-choice bioassay and a Y-tube behavioural bioassay using Bombus impatiens. We recorded 13 volatile compounds in floral extracts for plants from both ranges that varied qualitative and semi-quantitatively among populations. We found that in the field cage experiment, bumble bees visited plants from the US populations more frequently than plants from Mexican populations. However, bees showed no difference in preference between extracts from Mexican or US flowers. We conclude that although bees show differential visitation to whole plants of different regions, variation in floral extract alone does not translate into differences in preference by B. impatiens. The potential effects of variation in floral scent on the other native bee pollinators remain to be assessed"
Keywords:		Bombus impatiens chemical composition pollinators population variation volatile compound;
Notes:		"PubMed-not-MEDLINEVega-Polanco, Mayumi Solis-Montero, Lislie Rojas, Julio C Cruz-Lopez, Leopoldo Alavez-Rosas, David Vallejo-Marin, Mario eng England 2023/08/10 AoB Plants. 2023 Jul 21; 15(4):plad049. doi: 10.1093/aobpla/plad049. eCollection 2023 Jul"