Invasive crayfish wreck havoc on amphibians in southern California, and now its clear they also increase mosquito larvae.

By: Bucciarelli GM; Suh D; Davis A; Roberts D; Sharpton D; Shaffer HB; Fisher RN; Kats LB; August 20, 2018
Previous work by ARMI scientists have shown the important impact of invasive crayfish (Procambarus clarkii) on endangered and threatened amphibian species in southern California ( ). New published research has shown that these non-native predators may increase disease vectors (e.g. mosquitoes) through predation on native predators of these vectors such as dragonfly nymphs ( This work has also been highlighted in a recent National Geographic report on the study (

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