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Mouthpart conduit sizes of fluid-feeding insects determine the ability to feed from pores

Journal Article · · Proceedings of the Royal Society B: Biological Sciences
Fluid-feeding insects, such as butterflies, moths, and flies (20% of all animal species), are faced with the common selection pressure of having to remove and feed on trace amounts of fluids from porous surfaces. Insects able to acquire fluids that are confined to pores during drought conditions would have an adaptive advantage and increased fitness over other individuals. Here we performed feeding trials using solutions with magnetic nanoparticles to show that butterflies and flies have mouthparts adapted to pull liquids from porous surfaces using capillary action as the governing principle. In addition, the ability to feed on the liquids collected from pores depends on a relationship between the diameter of the mouthpart conduits and substrate pore size diameter; insects with mouthpart conduit diameters larger than the pores cannot successfully feed, thus there is a limiting substrate pore size from which each species can acquire liquids for fluid uptake. In conclusion, given that natural selection independently favored mouthpart architectures that support these methods of fluid uptake (Diptera and Lepidoptera share a common ancestor 280 mya that had chewing mouthparts), we suggest that the convergence of this mechanism advocates this as an optimal strategy for pulling trace amounts of fluids from porous surfaces.
Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1341685
Report Number(s):
BNL--113414-2017-JA
Journal Information:
Proceedings of the Royal Society B: Biological Sciences, Journal Name: Proceedings of the Royal Society B: Biological Sciences Journal Issue: 1846 Vol. 284; ISSN 0962-8452
Publisher:
The Royal Society PublishingCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (4)

Sperm transfer through hyper-elongated beetle penises – morphology and theoretical approaches journal July 2019
An augmented wood-penetrating structure: Cicada ovipositors enhanced with metals and other inorganic elements journal December 2019
Data from: Mouthpart conduit sizes of fluid-feeding insects determine the ability to feed from pores dataset December 2016
A quick tongue: older honey bees dip nectar faster to compensate for mouthpart structure deterioration journal October 2019


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