State-wide survey of amphibian pathogens in green frog (lithobates clamitans melanota) reveals high chytrid infection intensities in constructed wetlands

James Thomas Julian, Robert P. Brooks, Gavin W. Glenney, John A. Coll

Research output: Contribution to journalArticle

Abstract

We screened populations of larval Green Frogs (Lithobates clamitans melanota) for Ranavirus spp. and Batrachochytrium dendrobatidis (Bd) in naturally occurring reference wetlands (n = 12) and wetlands constructed for loss of habitat elsewhere (n = 12) throughout Pennsylvania, USA. We detected the ranavirus, Frog Virus 3, in one natural and one constructed wetland, and Bd occurred in 11 natural wetlands and 10 constructed wetlands. Infection intensities of Bd (zoospores per infected individual) were significantly higher in constructed (median = 771, mean ± SE = 1514 ± 450) than reference wetlands (median = 242, mean = 487 ± 216), and constructed wetlands contained four of the six highest Bd prevalence values. Our results suggest that infection intensity decreased with increasing forest cover, but only among wetlands with few anthropogenic disturbances and that best management practices for forested riparian zones may differ along gradients of human disturbance. If constructed wetlands are to replace and mitigate the loss of the ecological functions of natural wetlands, wetland-dependent wildlife need to withstand stressors like disease. To achieve this, resource managers should understand the role constructed wetlands play in the persistence and spread of emergent infectious disease.

Original languageEnglish (US)
Pages (from-to)199-211
Number of pages13
JournalHerpetological Conservation and Biology
Volume14
Issue number1
StatePublished - Apr 1 2019

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Lithobates
constructed wetlands
constructed wetland
frog
amphibian
amphibians
frogs
wetlands
pathogen
wetland
pathogens
Ranavirus
infection
Frog virus 3
disturbance
best management practices
ecological function
riparian zone
riparian areas
zoospores

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology

Cite this

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State-wide survey of amphibian pathogens in green frog (lithobates clamitans melanota) reveals high chytrid infection intensities in constructed wetlands. / Julian, James Thomas; Brooks, Robert P.; Glenney, Gavin W.; Coll, John A.

In: Herpetological Conservation and Biology, Vol. 14, No. 1, 01.04.2019, p. 199-211.

Research output: Contribution to journalArticle

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