Competition between the larvae of the introduced cane toad Bufo marinus (Anura: Bufonidae) and native anurans from the Darling Downs area of southern Queensland
- 1 December 1999
- journal article
- research article
- Published by Wiley in Australian Journal of Ecology
- Vol. 24 (6) , 636-643
- https://doi.org/10.1046/j.1442-9993.1999.00993.x
Abstract
Bufo marinus (L) has been present in the northern edge of the Darling River catchment for more than 25 years and the species currently occupies an area north of Chinchilla on the northern Darling Downs. This paper reports on preliminary findings of competition trials between larvae of B. marinus and native anurans in the Darling Downs area. Trials conducted in artificial ponds (1.4 × 1.2 × 0.2 m) indicated that Bufo reduced the growth of three native species (Limnodynastes tasmaniensis (Gunther), Limnodynastes terraereginae (Fry) and Notaden bennetti (Gunther)), and in some trials reduced the survival of two species (L. tasmaniensis and L. terraereginae). A fourth species (Limnodynastes ornatus (Grey)) showed higher growth rates with Bufo resulting from a non‐significant reduction in survival in those treatments. One of two trials conducted in enclosures (1.0 × 0.5 × 0.4 m) placed in a permanent water body indicated that B. marinus had a negative effect on growth of L. tasmaniensis. A survey of 30 breeding sites in the area found that Bufo used only a small number of water bodies in one breeding season and showed little overlap of pool use with most native species. Therefore, although B. marinus may negatively affect growth and survival of native anurans under some circumstances, the potential impact of B. marinus may be minimal if there are always many breeding sites where native anurans can breed in the absence of B. marinus. A more extensive assessment of temporal and spatial overlap of water body use by B. marinus and native anurans is needed to understand the exact impact of B. marinus in this region.Keywords
This publication has 13 references indexed in Scilit:
- Evaluation of the toxicity of eggs, hatchlings and tadpoles of the introduced toad Bufo marinus (Anura: Bufonidae) to native Australian aquatic predatorsAustralian Journal of Ecology, 1998
- A comparison of cane toad and native tadpoles as predators of native anuran eggs, hatchlings and larvaeWildlife Research, 1998
- The Potential Geographical Distribution of the Cane Toad, Bufo marinus L. in AustraliaConservation Biology, 1996
- Biological invasions: Lessons for ecologyTrends in Ecology & Evolution, 1993
- Range expansion of the introduced cane toadBufo marinusin New South WalesAustralian Zoologist, 1991
- Guilds of Anuran Larvae: Relationships among Developmental Modes, Morphologies, and HabitatsHerpetological Monographs, 1989
- Within-Habitat Relationships Between Invading Bufo-Marinus and Australian Species of Frog During the Tropical Dry SeasonWildlife Research, 1988
- Continuing Geographical Spread of Bufo marinus in Australia: Range Expansion between 1974 and 1980Journal of Herpetology, 1985
- The Rate of RAnge Expansion by Bufo marinus in Northern Australia, 1980-84Wildlife Research, 1985
- Water movements, tadpole competition and limits to the distribution of the frogs Ranidella riparia and R. signiferaOecologia, 1983