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Brief Summary

Comprehensive Description

Distribution

    Distribution and Habitat
    provided by AmphibiaWeb text

    This species inhabits grasslands, open savannas and some areas with rocky soils. Widespread in Pampas grasslands (South America).

Trends

    Life History, Abundance, Activity, and Special Behaviors
    provided by AmphibiaWeb text

    These diurnal toads are active throughout the year and they are explosive breeders. They reproduce in temporary ponds, following heavy rains. The advertisements calls have two components: a repeated whistle, followed by a train of vibrations. During amplexus females release about one hundred eggs in several immersion events. This species exhibits a defensive behaviour ("Unkenreflex").

Threats

    Life History, Abundance, Activity, and Special Behaviors
    provided by AmphibiaWeb text

    M. atroluteus is a common species in Uruguay in habitats with extensive cattle raising. Intensive livestock could affect reproductive habitat quality (i.e. hard soils - compactation).