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A Temperature Gradient Assay to Determine Thermal Preferences of Drosophila Larvae

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Published on: June 25, 2018

Phylogenetic signal in floral temperature patterns.

Sean A Rands¹, Michael J M Harrap²

¹School of Biological Sciences, University of Bristol, Life Sciences Building, Tyndall Avenue, Bristol, BS8 1TQ, UK. sean.rands@bristol.ac.uk.

BMC Research Notes

|January 29, 2021

Summary

Floral temperature patterns show some phylogenetic signal but vary widely, suggesting adaptation to pollinators and environment. This research explores thermal patterning in flowers and its biological significance.

Keywords:

Flowering plants Phylogenetic signal Pollinator-flower interactions Temperature patterns Thermography

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Area of Science:

Ecology
Plant Biology
Evolutionary Biology

Background:

Floral structures can exhibit temperatures above ambient and display thermal patterning.
Pollinators can distinguish artificial flowers mimicking these thermal traits, but biological relevance is unproven.

Purpose of the Study:

To investigate the diversity of floral thermal patterning.
To determine if thermal patterns are influenced by phylogenetic constraints or ecological factors like pollinators and environment.

Main Methods:

Analysis of a dataset comprising 97 plant species.
Examination for phylogenetic signal in intrafloral temperature differences.

Main Results:

A phylogenetic signal was detected in some groups (Asteraceae, Pelargonium), indicating related species share thermal patterns.
Other species lacked signal, suggesting thermal patterns are not solely due to ancestry.
Asteraceae exhibit significant thermal differences, potentially linked to floral architecture.

Conclusions:

Floral thermal patterning is not exclusively constrained by phylogeny.
Variation in thermal patterns suggests adaptation to specific pollinator interactions and environmental conditions.