Wild cane toads (Rhinella marina) expel foreign matter from the coelom via the urinary bladder in response to internal injury, endoparasites and disease

Crystal Kelehear, Hugh I. Jones, Benjamin A. Wood, Richard Shine

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1 Citation (Scopus)
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Abstract

Dissections of >1,200 wild-caught cane toads (Rhinella marina) in tropical Australia confirm a laboratory report that anurans can expel foreign objects from the coelom by incorporating them into the urinary bladder. The foreign objects that we found inside bladders included a diverse array of items (e.g., grass seeds, twigs, insect prey, parasites), many of which may have entered the coelom via rupture of the gut wall. In some cases, the urinary bladder was fused to other organs including liver, fat bodies, ovaries, Bidder's organs, lungs, mesentery, stomach wall, gall bladder, and the abdominal wall. Acanthocephalan parasites (of a range of developmental stages) were identified from the walls of the urinary bladders of three cane toads. This organ may play a significant role in destroying or excreting metazoan parasites, as well as inanimate objects.

Original languageEnglish
Article numbere0134036
Number of pages9
JournalPLoS ONE
Volume10
Issue number8
DOIs
Publication statusPublished - 12 Aug 2015
Externally publishedYes

Bibliographical note

Copyright the Author(s) 2015. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

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