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Updated: Jun 10, 2026

Manipulation of Color Patterns in Jumping Spiders for Use in Behavioral Experiments

Manipulation of Color Patterns in Jumping Spiders for Use in Behavioral Experiments

Published on: May 21, 2019

Evolution of cryptic coloration in ectoparasites.

Sarah E Bush¹, Dukgun Kim, Michelle Reed

¹Biodiversity Institute, University of Kansas, Lawrence, 66045, USA. bush@biology.utah.edu

The American Naturalist

|August 21, 2010

Summary

Ectoparasites like feather lice evolve cryptic coloration to match their hosts, aiding survival against host grooming. This camouflage evolves both within and between species, demonstrating natural selection in diverse ecological interactions.

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Area of Science:

Evolutionary Biology
Ecology
Zoology

Background:

Cryptic coloration is a well-studied evolutionary adaptation primarily observed in predator-prey dynamics.
Ectoparasites face host defenses, including visually-cued grooming behaviors.
The potential for cryptic coloration to evolve in host-parasite systems remains underexplored.

Purpose of the Study:

To investigate the evolution of cryptic coloration in avian feather lice (Phthiraptera: Ischnocera).
To determine if feather lice coloration matches host plumage as a mechanism to evade host grooming.
To explore the evolution of crypsis within and between parasite species.

Main Methods:

Comparative analysis of sister taxa to assess evolutionary patterns of coloration.
Examination of feather louse coloration in relation to host bird plumage.
Analysis of covariation in color between parasite and host within a single louse species.

Main Results:

Avian feather lice exhibit coloration matching their host's plumage, indicating evolved crypsis.
An exception was observed in head lice, which are less susceptible to grooming, suggesting reduced selection for camouflage.
Covariation of parasite and host color was demonstrated within a single louse species, supporting localized adaptation.

Conclusions:

Cryptic coloration has evolved in feather lice as a strategy to avoid host grooming, demonstrating natural selection in host-parasite interactions.
The findings highlight that cryptic coloration can evolve in diverse ecological contexts beyond predator-prey systems.
This study suggests that cryptic coloration may be widespread among the vast diversity of ectoparasites.