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Hybrid Zones

Hybrid Zones

Hybrid zones are narrow regions where two closely related species interact, mate, and produce hybrids. Relative to either parent species, hybrids may possess distinct phenotypic or genetic differences that impact their survival and reproductive success. The genetic variances introduced by hybridization influence species diversity and speciation processes within the hybrid zone.

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Related Experiment Video

Updated: Dec 9, 2025

Zebra II as A Novel System to Record Electrophysiological Signals in Zebrafish

Zebra II as A Novel System to Record Electrophysiological Signals in Zebrafish

Published on: August 16, 2024

Zebra stripes.

¹Department of Biological Sciences, University of Bristol, Bristol BS8 4PJ, UK.

Current Biology : CB

|September 8, 2020

Summary

This summary is machine-generated.

Zebras have stripes to deter biting insects like tsetse flies and horseflies. This striped pattern is a key adaptation for zebra survival in fly-infested regions.

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Last Updated: Dec 9, 2025

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Area of Science:

Zoology
Evolutionary Biology
Animal Behavior

Background:

The distinctive striped coat of zebras has long intrigued scientists.
Previous hypotheses for zebra striping included predator confusion and thermoregulation.

Purpose of the Study:

To investigate the primary adaptive function of zebra stripes.
To test the hypothesis that stripes serve as a defense against biting insects.

Main Methods:

Observational studies of zebra behavior in natural habitats.
Comparative analysis of zebra striping patterns across different geographic locations.
Field experiments involving artificial striped and unstriped surfaces.

Main Results:

Significantly fewer horseflies and tsetse flies landed on striped surfaces compared to unstriped ones.
Zebra striping intensity correlates with local biting fly density.
No significant evidence supporting predator confusion or thermoregulation as primary drivers.

Conclusions:

Zebra stripes function as a crucial defense mechanism against biting insects.
The evolution of zebra striping is strongly linked to reducing insect harassment and associated disease transmission.