Myxosporean parasites in Australian frogs: Importance, implications and future directions

Abstract

Graphical abstract

Highlights

► Australian frog species have been shown to be affected by myxosporidiosis. ► It is suggested that Myxosporea threaten amphibian health and conservation. ► Information gained in Australia is transferable to amphibians around the world.

Abstract

Myxosporean parasites have been identified in amphibians around the world yet very little is known about their diversity, biology and host impact. Several species of Australian frogs have recently been shown to be affected by myxosporidiosis caused by two new Cystodiscus species. In this manuscript, we review what is known about the myxosporean parasites Cystodiscus australis and Cystodiscus axonis that produce myxospores in gallbladders of Australian frogs and Myxobolus fallax and Myxobolus hylae that produce spores in gonads and the potential impact of these parasites on the conservation of Australian frogs. By doing so, we aim to highlight the importance of amphibian myxosporean parasites, suggest directions for future research and argue that the lessons learned about these parasites in Australia are directly transferable to amphibians around the world.