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Comparative sensitivities of larval stages of the cane toad, Rhinella marina, and the striped marsh frog, Limnodynastes peronii, to atrazine

journal contribution
posted on 06.12.2017, 00:00 authored by Khurshida SiddiquaKhurshida Siddiqua, Ralph AlquezarRalph Alquezar, Scott WilsonScott Wilson
Variations in larval sensitivities to atrazine were determined in the Australian native striped marsh frog, Limnodynastes peronii, and the introduced cane toad, Rhinella marina. The static acute test design involved six nominal concentrations of atrazine, including control, solvent control, 3, 6, 12, and 24 mg L–1. Gosner stages 22–23 as hatchlings, stages 25–26, 28–29, and 32–33 as premetamorphic, 36–37 as prometamorphic and 40–41 as metamorphic climax stages of cane toads and the first four sets of Gosner stages of striped marsh frogs were exposed to atrazine treatments for 96 h. Results showed that late larval stages were more sensitive than early stages and different premetamorphic stages showed variations in sensitivities in both test species. The striped marsh frog showed a stronger concentration- and stage-dependent response and greater sensitivity to atrazine than the cane toad. In both experimental species, Gosner stages 28–29 showed better concentration-dependent increase in sensitivities to atrazine compared with other larval stages. It can be concluded that inter- and intra-species variations in sensitivities to atrazine may occur in Australian anurans and native species may show greater sensitivity to acute concentrations of atrazine than the introduced cane toad.

Funding

Category 3 - Industry and Other Research Income

History

Volume

61

Issue

4

Start Page

320

End Page

327

Number of Pages

8

eISSN

1446-5698

ISSN

0004-959X

Location

Australia

Publisher

CSIRO

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Institute for Resource Industries and Sustainability (IRIS); School of Medical and Applied Sciences (2013- ); Vision Environment Queensland;

Era Eligible

Yes

Journal

Australian journal of zoology.