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Updated: Jun 23, 2026

Environmental Screening of Aeromonas hydrophila, Mycobacterium spp., and Pseudocapillaria tomentosa in Zebrafish Systems

Environmental Screening of Aeromonas hydrophila, Mycobacterium spp., and Pseudocapillaria tomentosa in Zebrafish Systems

Published on: December 8, 2017

Cleaner fish are potential super-spreaders.

Pauline Narvaez^1,2,3, Renato A Morais^1,2, David B Vaughan^4,5

¹ARC Centre of Excellence for Coral Reef Studies, James Cook University, 1 James Cook Drive, Townsville, QLD 4810, Australia.

The Journal of Experimental Biology

|July 20, 2022

Summary

This summary is machine-generated.

Bluestreak cleaner wrasse (Labroides dimidiatus) can get infected by some parasites but resists others. This cleaner fish may also act as a temporary carrier for adult parasites, potentially spreading them to new hosts.

Keywords:

Cleaning symbiosis Parasite Transmission

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Area of Science:

Marine biology
Ecology
Parasitology

Background:

Cleaning symbiosis is vital for tropical marine ecosystems.
The negative impacts of mutualistic interactions, like parasite transmission during cleaning, are understudied.

Purpose of the Study:

To investigate the susceptibility of bluestreak cleaner wrasse (Labroides dimidiatus) to generalist ectoparasites.
To determine if L. dimidiatus can transmit these parasites between client fish.

Main Methods:

Laboratory experiments exposing L. dimidiatus to infective stages of three ectoparasite species.
Comparing infection rates of L. dimidiatus with control host species.
Simulating parasite transmission by transplanting adult monogenean flatworms onto L. dimidiatus.

Main Results:

L. dimidiatus showed susceptibility to Gnathia aureamaculosa but resistance to Cryptocaryon irritans and Neobenedenia girellae.
Transplanted adult monogenean flatworms remained on L. dimidiatus for approximately two days, continuing to produce eggs.
Cleaner wrasse interactions present opportunities for mobile parasites to be transported.

Conclusions:

L. dimidiatus exhibits resistance to some parasite life stages but can act as a temporary vector for adult parasites.
Parasites may exploit cleaning interactions for transmission and spread, especially those evading predation by cleaner fish.