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Evolution of Ant-Mimicking Beetles

Part of a phylogenetic tree with many branches. Some branches are black, and others are orange.

Topic

  • Anatomy & Physiology
  • Animal Behavior
  • Evolution
  • Phylogeny
  • Math & Computational Skills
  • Graph Interpretation

Resource Type

  • Activities
  • Data Points

Level

High School — GeneralHigh School — AP/IBCollege
Saved By
8 Users
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Description

This activity guides the analysis of a published scientific figure from a study that explored the evolutionary origins of parasitic beetles that mimic army ants.

Many beetle species in the subfamily Aleocharinae have developed bodies, behaviors, and chemical signals similar to those of army ants. This allows the beetles to live as social parasites within the ants’ colonies, where they secretly steal the ants’ food and eat their eggs. In this study, scientists used DNA sequencing to investigate the evolutionary relationships among these parasitic, ant-mimicking beetles. The figures show examples of ant-mimicking beetles and the ant species they parasitize, as well as a phylogenetic tree for Aleocharinae beetle species.

The “Educator Materials” document includes captioned figures, background information, figure interpretation, and discussion questions. The “Student Handout” includes captioned figures and background information.
 

Student Learning Targets

  • Analyze and interpret data from a scientific figure. 
  • Describe the symbiotic relationship of parasitism.
  • Interpret a phylogenetic tree to analyze patterns of evolution, convergent evolution in particular.
     

Estimated Time

Within one 50-minute class period.

Key Terms

adaptive radiation, army ant, cladogram, convergent evolution, evolutionary tree, mimicry, most recent common ancestor (MRCA), phylogenetic tree, social parasite, symbiosis

Primary Literature

Maruyama, Munetoshi and Joseph Parker. “Deep-time convergence in rove beetle symbionts of army ants.” Current Biology 27, 6 (2017): 920–926. https://doi.org/10.1016/j.cub.2017.02.030

Terms of Use

Please see the Terms of Use for information on how this resource can be used.

Accessibility Level (WCAG compliance)

PDF files meet criteria.

Version History

Date Published 11.07.19

NGSS (2013)

HS-LS4-1; SEP2, SEP4, SEP5

AP Biology (2019)

EVO-3.C, ENE-4.B; SP1, SP4

IB Biology (2016)

5.4

Common Core (2010)

ELA.RST.9–12.7 
MP2, MP5

Vision and Change (2009)

CC1; DP2, DP3

Materials

Educator Materials (PDF) 698 KB
Student Handout (PDF) 611 KB
Figure 1 (JPG) 574 KB
Figure 2 (JPG) 266 KB

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