Document Type

Article

Author ORCID Identifier

Jackson Phillips https://orcid.org/0000-0001-9831-6609

Jens Reissig https://orcid.org/0000-0002-1514-8433

Gary Kyle Nicolau https://orcid.org/0000-0001-8867-3709

Journal/Book Title/Conference

African Journal of Herpetology

Volume

72

Issue

1

Publisher

Taylor & Francis

Publication Date

4-25-2023

First Page

81

Last Page

90

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Abstract

Lungs are a prototypical trait of most tetrapods, but some amphibians have become secondarily lungless over evolutionary time. Anuran (frog) tadpoles offer an opportunity to examine lung loss from an evolutionary perspective, because there are many independent instances where lungs are not inflated until adulthood, and so are functionally lost. Lung loss is typically associated with living in fast-flowing streams, and so we examined larval lung development in the stream specialist family Heleophrynidae. We find that one genus, Hadromophryne Van Dijk, 2008, has large lungs as tadpole, while the other genus, Heleophryne Sclater, 1898, has much smaller, stunted lung buds. We further speculate how this information changes our understanding of how the specialised torrent form has evolved in this specialised group.

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