San Diego Management & Monitoring Program

Threats and Stressors
Argentine Ant Study

in progress

Project description

The USGS conducted the experimental implementation of sampling MSP sites during wet year conditions. The project utilized a stratified sampling design and a protocol developed in 2014. A combination of GIS and field measured covariates were used to identify drivers that impact Argentine ant population dynamics. The project also included developing potential measures to make the site less or unsuitable for Argentine ants. The outcome of this study will inform management actions for experimental implementation.

Project groups


Project Group: Urban Runoff Studies

Project protocol

Name: Assessing Presence of Argentine Ants Using the Bait Method

Description: This protocol is geared towards recruiting Argentine ants to bait locations. Preferences for timing of sampling are recommended for optimizing collection of Argentine ants. Results from this type of bait study will not provide an accurate measure of what native ants are present, as many ants will not be attracted to the bait, may not be active during the baiting period, or will be competitively excluded once dominance over the bait is established.

Project Data - Files

Project focus

Project type: Monitoring-Animals

Target species: Argentine ant

Data steward: Tritia Matsuda

Investigator: Robert N. Fisher

Main implementing entity: U.S. Geological Survey, Western Ecological Research Center

Point of contact: Tritia Matsuda

SDMMP lead: Emily Perkins

Study lead: Cheryl Brehme

Files and Documents

2015 Assessing Presence of Argentine Ants Using the Bait Method

Author(s):Matsuda, Tritia; Brehme, Cheryl; Fisher, Robert N.

2016 Determining Presence of Argentine Ants Using the Rapid Assessment Protocol

Author(s):Matsuda, Tritia; Brehme, Cheryl; Fisher, Robert N.

2021 Predictability of invasive Argentine ant distribution across Mediterranean ecoregions of southern California

Author(s):Richmond, Jonathan; Matsuda, Tritia; Brehme, Cheryl; Perkins, Emily; Fisher, Robert N.