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Rhizaria are a diverse group of unicellular protists characterized by their threadlike cytoplasmic extensions known as pseudopodia. These structures aid in both locomotion and feeding, giving Rhizaria an amoeboid appearance. Their amoeboid morphology once led to taxonomic confusion, but molecular phylogenetics has clarified their evolutionary placement and emphasized their shared use of pseudopodia despite divergent lineages.This clade comprises diverse lineages such as Chlorarachniophyta,...
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Related Experiment Video

Updated: Nov 21, 2025

A Concoction Pipeline for Generating Molecular Operational Taxonomic Units (MOTUs) Among Riparian and Aquatic Beetles
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Takeoff diversity in Diptera.

Alexandra M Yarger1, Katherine A Jordan1, Alexa J Smith1

  • 1Department of Biology, Case Western Reserve University, Cleveland, OH 44106-7080, USA.

Proceedings. Biological Sciences
|January 12, 2021
PubMed
Summary
This summary is machine-generated.

Calyptratae flies, including house flies, use specialized hindwings called halteres for faster, more stable takeoffs. Haltere removal impairs takeoff speed and stability in these flies, unlike other fly groups.

Keywords:
Dipteraflighthaltereinsectstabilitytakeoff

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Area of Science:

  • Insect flight mechanics
  • Dipteran evolution
  • Sensory-motor integration

Background:

  • The order Diptera (true flies) possess two wings, with hindwings modified into halteres used for flight stability.
  • The Calyptratae, a successful monophyletic subsection of Diptera, exhibit unique haltere oscillation during locomotion.
  • Previous research established halteres' role in flight stability, but their specific function in takeoff remains less understood.

Purpose of the Study:

  • To investigate the role of halteres in the takeoff mechanics of Calyptratae flies compared to non-Calyptratae flies.
  • To determine if haltere use influences takeoff velocity and stability in Calyptratae.
  • To elucidate the impact of haltere removal on leg extension speed during takeoff.

Main Methods:

  • Comparative analysis of takeoff performance in Calyptratae and non-Calyptratae flies.
  • Experimental manipulation involving haltere removal in both groups.
  • High-speed kinematic analysis to measure takeoff velocity, stability, and leg extension speed.

Main Results:

  • Calyptratae flies utilize halteres for takeoff stabilization, achieving higher velocities than non-Calyptratae flies.
  • Haltere removal significantly reduced takeoff velocity and stability in Calyptratae, linked to decreased leg extension speed.
  • Haltere removal did not affect takeoff performance in non-Calyptratae species, including *D. melanogaster*.

Conclusions:

  • Haltere function is crucial for rapid and stable takeoff in the Calyptratae clade.
  • This specialized use of halteres provides a significant advantage for escape maneuvers in these flies.
  • Haltere-mediated takeoff enhancement is a derived trait within the Calyptratae.