Impact of a Chytrid-related mortality event on a population of the Green and Golden Bell Frog<i>Litoria aurea</i>

Penman, Trent D.; Muir, GW; Magarey, ER; Burns, EL

doi:10.7882/az.2008.009

Cited by 25 publications

(19 citation statements)

References 11 publications

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“…There is an accumulating body of evidence that indicates that some species of frog live with the disease and act as a reservoir for the fungus (Hunter et al 2006;Kriger and Hero 2006). This has implications for our project because L. aurea appears to be sensitive to the disease (DEC 2005;Penman et al 2008) and may not be able to recolonise areas inland from the release site.…”

Section: Frog Species Detected During Pre-release and Post Release Sumentioning

confidence: 99%

Reintroduction of the Green and Golden Bell FrogLitoria aureato Pambula on the south coast of New South Wales

Daly

Johnson²,

Malolakis³

et al. 2008

Australian Zoologist

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Captive bred Green and Golden Bell Frog Litoria aurea tadpoles were introduced to a coastal wetland near Pambula on the far south coast of New South Wales. The reintroduction involved the release of approximately 5000 captive-bred tadpoles and subsequent monitoring. Before the reintroduction could take place several requirements had to be satisfied. A re-introduction proposal was prepared for the Department of Environment and Conservation (DEC) and independently reviewed by two referees, pre-release surveys of frogs were undertaken to determine if L. aurea existed on the site and to ascertain if the pathogen Bactrachochytrium dendrobatiodis (chytrid) was present within the endemic frog population. The captive bred tadpoles were tested for the presence of chytrid prior to release. The water quality was tested at the proposed release site and potential predators were removed. The project required maintenance and breeding of the captive population, and post release surveys. The project took 4.5 years from submission of the proposal to the first release of tadpoles and to date has cost approximately $190K, of which only $37K was funded. It is anticipated that ongoing costs will be in the order of $25K per year for the next four years . Details of the project costs and chronology of actions are given in order to assist others who wish to undertake similar projects. So far two adults have been detected 13 months post-release.

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Section: Frog Species Detected During Pre-release and Post Release Sumentioning

confidence: 99%

Reintroduction of the Green and Golden Bell FrogLitoria aureato Pambula on the south coast of New South Wales

Daly

Johnson²,

Malolakis³

et al. 2008

Australian Zoologist

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“…The population experiences high annual mortality (Pickett et al in press), probably in part due to Batrachochytrium dendrobatidis (Penman et al 2008, Stockwell et al 2008. The compensatory high fecundity and growth rate of L. aurea allows the population to persist with high turnover and size variability (Hamer & Mahony 2007, Pickett et al in press).…”

Section: Introductionmentioning

confidence: 99%

Diet of a threatened pond frog differs over a small spatial scale

Bower¹,

Pickett²,

Garnham³

et al. 2014

Endang. Species. Res.

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Suitability of habitat patches affects demographic processes and consequently influences the viability of populations. In order for managers to consider the potential of resources on a scale appropriate to their use, it is important to understand the processes that influence the ecology of threatened species. Differential growth rates of Litoria aurea (green and golden bell frog) at Sydney Olympic Park, Australia, may be explained by prey availability and diet. We tested: (1) whether food availability differed among precincts at Sydney Olympic Park and (2) whether the diet of L. aurea was influenced by availability of invertebrate prey. Diets were distinct among precincts and reflected the variation in biomass and richness of invertebrate assemblages. Precincts with greater biomass corresponded to areas with faster individual growth rates and greater habitat structure. The differences in diet and individual growth rates of L. aurea among precincts at Sydney Olympic Park demonstrate how caution must be applied to generalising population function, even within a small area.

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“…It rapidly declined through most of its range in a pattern consistent with exposure to the chytrid fungus (Berger et al 1999;Penman et al 2008). It rapidly declined through most of its range in a pattern consistent with exposure to the chytrid fungus (Berger et al 1999;Penman et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Life stage specific variation in the occupancy of ponds byLitoria aurea, a threatened amphibian

et al. 2012

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Breeding aggregations are a reproductive strategy to increase mate finding opportunity. However, because aggregations skew the distribution of mature animals through conspecific attraction, rather than resource availability, the distribution of breeding sites may be reduced, so that not all suitable breeding sites are used. To examine the relationship between landscape and reproductive strategies of a threatened frog, Litoria aurea, we studied its distribution at Sydney Olympic Park over two breeding seasons. We aimed to: (i) determine the distribution and predictors of breeding ponds; and (ii) assess the significance of dispersal in the juvenile age-class. We found that the distribution of the calling males was highly skewed and occurred in large, well-connected ponds. Despite this, breeding ponds were not aggregated; pond size was the single factor explaining the distribution of breeding ponds. Juvenile frogs dispersed from breeding ponds and were not associated with a specific pond characteristic. Less breeding occurred in the second season during which fewer ponds were used for breeding including many different ponds from the previous year. These changes suggest that breeding effort and breeding pond choice are dynamic and therefore knowledge of the factors that drive breeding events will be a powerful tool in managing species, particularly in light of changing climatic regimes.

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Impact of a Chytrid-related mortality event on a population of the Green and Golden Bell FrogLitoria aurea

Cited by 25 publications

References 11 publications

Reintroduction of the Green and Golden Bell FrogLitoria aureato Pambula on the south coast of New South Wales

Reintroduction of the Green and Golden Bell FrogLitoria aureato Pambula on the south coast of New South Wales

Diet of a threatened pond frog differs over a small spatial scale

Life stage specific variation in the occupancy of ponds byLitoria aurea, a threatened amphibian

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