Snetsinger Butterfly Garden
  • Home
  • Visit
  • Volunteer
  • Butterfly Directory
  • Birds of the SBG
  • Plant Directory
  • Activities
  • Support the Project
  • Blog
  • Contact
  • Events
  • Master Gardener Projects
SBG KS

A Monarch's Proboscis

9/16/2021

0 Comments

 
Picture
We know that a good supply of nectar is essential for monarchs who are making the long journey to Mexico. And we know that native plants such as milkweed, aster and goldenrod are excellent sources of this all-important food. But just how do butterflies consume it?
Butterflies eat with their proboscis. This long, narrow mouthpart has coevolved with the flowers a butterfly relies on for nectar, so not surprisingly the length of the proboscis is usually correlated with the depth of the corolla tube of the flower species on which it feeds. Because it looks rather like a drinking straw, it was always assumed that it works like one, too. But in science, assumptions can be dangerous!
Not long ago, an engineer who was watching his young daughters chasing butterflies became curious. How could butterflies suck liquid through a straw that might be several times their body length? According to the physics of fluid transport, this would expend more energy than it delivered—not a recipe for success!
Once the question was raised, other scientists became interested and further studies ensued. As a result, we now know that a proboscis works more like a sponge—soaking up the nectar via capillary action, aided by a suction pump in the head of the butterfly.
So the next time you observe a monarch fueling up on your milkweed plant, remember—there’s more to it than meets the eye!
Author: Lisa Schneider
Photo credit: Pam Ford
Snetsinger Butterfly Garden Knowledge Series
0 Comments



Leave a Reply.

    Archives

    May 2022
    March 2022
    February 2022
    January 2022
    December 2021
    November 2021
    September 2021
    June 2021
    March 2021
    February 2021
    January 2021
    December 2020
    November 2020
    October 2020

    Categories

    All
    Bugs
    Invasive Plants And Bugs
    Knowledge Series
    Seeds And Planning
    Sights And Sounds
    Spotted Lantern Fly

    RSS Feed

Proudly powered by Weebly