# The Sensory Ecology of Tsetse Flies: Neuroscience Perspectives on a Disease Vector

## TL;DR

This paper reviews the sensory systems of tsetse flies, highlighting how they find hosts and mate, and connects this to broader understanding of insect neurobiology.

## Contribution

The paper synthesizes over 100 years of tsetse sensory research and links it to insights from model organisms like Drosophila.

## Key findings

- Tsetse flies use a combination of sensory systems, including olfaction and vision, for host-seeking behavior.
- Comparing tsetse sensory systems to those of Drosophila provides insights into the evolution of their unique behaviors.
- Understanding tsetse sensory ecology can lead to improved disease control strategies.

## Abstract

Tsetse flies (Glossina sp.) are important disease vectors with unique biology that makes them fascinating models to study the evolution of behaviour and its underlying neural circuits. They evolved blood‐feeding in an independent event from mosquitoes, and unlike most insects, give birth to a single live offspring—rather than laying eggs. Given their impact on public health, they have been extensively studied with a strong focus on vector control. However, information on their sensory ecology and neurobiology is thinly spread across the literature. Here, we review over a hundred years of literature on tsetse sensory systems, including olfaction, vision, audition, taste, thermosensation and mechanosensation, in the context of the behaviours they drive, including host‐finding, blood‐feeding and mating. We embed the available data within our more detailed understanding of the sensory systems of the vinegar fly
Drosophila melanogaster
and other diptera. This sets the stage for future work on how tsetse find their hosts and reproduce, opening new avenues to understand how their sensory systems function and evolve, which in turn will inform better control strategies to reduce the burden of the diseases they transmit.

Tsetse flies (Glossina sp.) are important disease vectors that feed on vertebrate blood. Host‐seeking depends on a combination of sensory systems, from long‐range senses like olfaction and vision, to shorter‐range senses such as audition, mechanosensation, thermosensation and taste. We embed over 100 years of tsetse research in our more detailed understanding of the sensory systems of
Drosophila melanogaster
and other diptera, to explore how tsetse behaviours evolved and function.