The principles of rapid response for amphibian conservation, using the programmes in Panama as an example

Gagliardo, Ronald W.; Crump, Paul; Griffith, Edgardo; Mendelson, Joseph R.; Ross, Heidi; Zippel, Kevin C.

doi:10.1111/j.1748-1090.2008.00043.x

Cited by 71 publications

(77 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Amphibian declines associated with Bd were well documented at three sites where amphibian diversity (richness and abundance) remains low: Fortuna, Omar Torrijos, and El Valle (Lips, 1999;Lips et al, 2006;Gagliardo et al, 2008). Our sampling revealed that Bd persists at Fortuna 11 years after disease emergence, and is now enzootic at these sites (Table 1).…”

mentioning

confidence: 88%

“…Captive breeding programs such as at the El Valle Amphibian Conservation Center in Panama and at zoos associated with the amphibian ark project (http:// www.amphibianark.org, March 5, 2008) have already been successful at preserving some species in captivity (Gagliardo et al, 2008). However, repatriation is complicated by enzootic Bd at all sites with a history of disease.…”

mentioning

confidence: 99%

“…Central mountain range in Central America Gagliardo et al, 2008). We continued long-term monitoring of two sites in western Panama: Fortuna Forest Reserve (Fortuna) and General de Division Omar Torrijos Herrera National Park (Omar Torrijos) (Lips, 1999;Lips et al, 2006).…”

mentioning

confidence: 99%

See 2 more Smart Citations

Chytridiomycosis and Amphibian Population Declines Continue to Spread Eastward in Panama

et al. 2008

View full text Add to dashboard Cite

Chytridiomycosis is a globally emerging disease of amphibians and the leading cause of population declines and extirpations at species-diverse montane sites in Central America. We continued long-term monitoring efforts for the presence of the fungal pathogen Batrachochytrium dendrobatidis (Bd) and for amphibian populations at two sites in western Panama, and we began monitoring at three new sites to the east.Population declines associated with chytridiomycosis emergence were detected at Altos de Campana National Park. We also detected Bd in three species east of the Panama Canal at Soberania National Park, and prevalence data suggests that Bd may be enzootic in the lowlands of the park. However, no infected frogs were found further east at Torti (prevalence <7.5% with 95% confidence). Our results suggest that Panama's diverse and not fully described amphibian communities east of the canal are at risk. Precise predictions of future disease emergence events are not possible until factors underlying disease emergence, such as dispersal, are understood.

show abstract

mentioning

confidence: 88%

mentioning

confidence: 99%

See 1 more Smart Citation

Chytridiomycosis and Amphibian Population Declines Continue to Spread Eastward in Panama

et al. 2008

View full text Add to dashboard Cite

show abstract

“…Bd causes the disease chytridiomycosis and is responsible for hundreds of amphibian declines and extinctions, including extirpation of the emblematic Panamanian golden frog, Atelopus zeteki [14,15]. This species was historically present in central-western Panamá until Bd arrived.…”

Section: Introductionmentioning

confidence: 99%

Composition of symbiotic bacteria predicts survival in Panamanian golden frogs infected with a lethal fungus

et al. 2015

View full text Add to dashboard Cite

Symbiotic microbes can dramatically impact host health and fitness, and recent research in a diversity of systems suggests that different symbiont community structures may result in distinct outcomes for the host. In amphibians, some symbiotic skin bacteria produce metabolites that inhibit the growth of Batrachochytrium dendrobatidis (Bd), a cutaneous fungal pathogen that has caused many amphibian population declines and extinctions. Treatment with beneficial bacteria (probiotics) prevents Bd infection in some amphibian species and creates optimism for conservation of species that are highly susceptible to chytridiomycosis, the disease caused by Bd. In a laboratory experiment, we used Bd-inhibitory bacteria from Bd-tolerant Panamanian amphibians in a probiotic development trial with Panamanian golden frogs, Atelopus zeteki, a species currently surviving only in captive assurance colonies. Approximately 30% of infected golden frogs survived Bd exposure by either clearing infection or maintaining low Bd loads, but this was not associated with probiotic treatment. Survival was instead related to initial composition of the skin bacterial community and metabolites present on the skin. These results suggest a strong link between the structure of these symbiotic microbial communities and amphibian host health in the face of Bd exposure and also suggest a new approach for developing amphibian probiotics.

show abstract

“…The latter two options have been used successfully as a last resort to prevent extinctions (Mendelson et al 2006, Gagliardo et al 2008. These intensive options are essential for critically endangered species and are currently underway for some Australian frog species at various scales.…”

Section: Introductionmentioning

confidence: 99%

Using site-occupancy models to prepare for the spread of chytridiomyosis and identify factors affecting detectability of a cryptic susceptible species, the Tasmanian tree frog

2015

View full text Add to dashboard Cite

Context The global reduction of amphibian biodiversity as a result of the disease chytridiomycosis (caused by the fungus Batrachochytrium dendrobatidis; Bd) has highlighted the need to accurately detect local population declines in association with Bd presence. Although Bd has spread globally, some remote regions such as the Tasmanian Wilderness World Heritage Area (1.40 million ha; TWWHA) in Australia, remain largely, but not entirely, disease free. The Tasmanian tree frog (Litoria burrowsae) resides primarily within TWWHA boundaries, and is believed to be susceptible to chytridiomycosis. Aims In the absence of historical abundance data, we used a single-season multi-state site-occupancy model to investigate the impact of Bd on L. burrowsae populations, on factors affecting species detection and to inform ongoing surveillance and conservation. Methods We recorded frog detection and ranked call intensity (estimation of population size) from repeated independent surveys within a season to estimate the role of covariates, such as presence of Bd and environmental variables, on species occupancy and detection probability. Key results Modelling revealed large frog populations are more likely to be present at naturally formed than human-formed ponds, strong winds negatively affect detection of populations, and time after sunset affects detection of large populations. Large frog populations were more likely to be Bd-negative; however, models including Bd presence were not well supported, in part a result of the small number of Bd-positive sites recorded. Conclusions and Implications The utility of site-occupancy modelling in understanding the impact of disease on populations is little known, but has the potential to improve the accuracy and efficiency of many conservation programs.

show abstract

The principles of rapid response for amphibian conservation, using the programmes in Panama as an example

Cited by 71 publications

References 7 publications

Chytridiomycosis and Amphibian Population Declines Continue to Spread Eastward in Panama

Chytridiomycosis and Amphibian Population Declines Continue to Spread Eastward in Panama

Composition of symbiotic bacteria predicts survival in Panamanian golden frogs infected with a lethal fungus

Using site-occupancy models to prepare for the spread of chytridiomyosis and identify factors affecting detectability of a cryptic susceptible species, the Tasmanian tree frog

Contact Info

Product

Resources

About