Insensitivity to road salt

An advantage for the American bullfrog?

Research output: Contribution to journalArticle

Abstract

The health of freshwater ecosystems is negatively affected by a multitude of pollutants. In northern latitudes, road deicing agents enter nearby ponds and waterways elevating chloride concentrations in winter and spring. Few studies have examined how amphibians respond to road salt contamination and no study has focused on the response of an invasive amphibian. We examined the effects of NaCl, the most commonly used deicing agent, on the embryos and tadpoles of the American bullfrog, Lithobates catesbeianus, a species that is invasive in many regions around the world. In the first experiment, we exposed L. catesbeianus embryos to ecologically relevant levels of chloride for 60 days. The second experiment examined the indirect consequences of chloride contamination by exposing L. catesbeianus tadpoles to dragonfly larvae. Lithobates catesbeianus did not experience reduced survival, growth, or ability to evade predation in elevated chloride concentrations compared to controls. The lack of a response by L. catesbeianus suggests that its population growth will not be negatively impacted by road salt contamination. This result may be good news for L. catesbeianus, but raises concern for sympatric amphibians that have to contend with negative impacts of both chloride contamination and non-native L. catesbeianus.

Original languageEnglish (US)
Pages (from-to)1-8
Number of pages8
JournalHydrobiologia
Volume721
Issue number1
DOIs
StatePublished - Jan 1 2014

Fingerprint

Lithobates catesbeianus
roads
chloride
salts
amphibian
chlorides
deicing agents
embryo
amphibians
tadpoles
dragonfly
freshwater ecosystem
embryo (animal)
population growth
pond
predation
experiment
waterways
road salt
Anisoptera (Odonata)

Keywords

  • Amphibian
  • Deicing agents
  • Dragonfly larvae
  • Lithobates catesbeianus
  • Sublethal effects
  • Survival

ASJC Scopus subject areas

  • Aquatic Science

Cite this

Insensitivity to road salt : An advantage for the American bullfrog? / Matlaga, Tanya Hawley; Phillips, Christopher A; Riecks-Soucek, David John.

In: Hydrobiologia, Vol. 721, No. 1, 01.01.2014, p. 1-8.

Research output: Contribution to journalArticle

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