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Bioassay For Evaluating Toxicity and Repellency of Essential Oils To the Red Imported Fire Ant (Hymenoptera: Formicidae)

The growing concern of consumers about the use of traditional insecticides has increased need for development of safe, effective, and natural insecticides and repellents. Plant extracts containing essential oils have been used for centuries to kill and repel a variety of insect pests including cockr...

Distribution and Population Dynamics of Blattella Asahinai in Southern Alabama and Georgia, USA

The Asian cockroach, Mizukubo, was discovered in large numbers in southeast Alabama in 2003. We surveyed southern Alabama and Georgia to determine the distribution of this species. We found that was established in 7 counties in Georgia and 8 counties in Alabama. Basic ecology and behavior studies we...

Factors Affecting Coprophagy and Necrophagy by the German Cockroach (Dictyoptera: Blattellidae)

Modern bait formulations have been used successfully to control infestations of the German cockroach, Blattella germanica (L.) since the mid 1980s. Because of the slow-acting insecticides used in most bait formulations, unmetabolized insecticide may be excreted in the feces and oral secretions, and ...

CONTAMINATION of BAIT DEPOSITS and BAITED SUBSTRATES AFFECTS PERFORMANCE of INSECTICIDAL BAITS USED for GERMAN COCKROACH (DICTYOPTERA: BLATTELLIDAE) CONTROL

Most manufacturers warn applicators to avoid contaminating cockroach baits with conventional aerosol or liquid insecticides. However, at least one study has concluded that small amounts of insecticides do not affect bait performance. In this study we use mint oil, a relatively nontoxic — yet highly ...

TOXICITY, REPELLENCY, and PERFORMANCE of an INDOXACARB BAIT for CONTROL of GERMAN COCKROACHES (DICTYOPTERA: BLATTELLIDAE)

Experimental gel and powder bait formulations containing 0.25, 0.5, and 1.0% Indoxacarb were evaluated in a series of laboratory and field studies against the German cockroach,Blattella germanica (L.). Mortality was first determined in 18 by 31 by 10 cm plastic boxes with loosely fitting covers. Twe...

LABORATORY AND FIELD EVALUATIONS OF AN IMIDACLOPRID BAIT AGAINST GERMAN COCKROACHES (DICTYOPTERA: BLATTELLIDAE)

An experimental 2.15% imidacloprid-based gel bait containing »44% water was evaluated in laboratory and field studies against the German cockroach, Blattella germanica (L.). In continuous exposure tests, toxicity and presumably bait consumption varied with cockroach stage, deprivation of competitive...

REPELLENCY OF MOVING AIR TO COCKROACHES (DICTYOPTERA: BLATTELLIDAE AND BLATTIDAE): A NONCHEMICAL IPM TACTIC

A modified Ebeling choice box was designed to evaluate the repellency of moving ambient air to American, Periplaneta americana (L.), German, Blattella germanica (L.), and smokybrown, Periplaneta fuliginosa (Serville), cockroaches using air velocities of 0 - 4.75 m/s. The modified choice box tested t...

PERFORMANCE OF AVERMECTIN BAIT FORMULATIONS AGAINST THE GERMAN COCKROACH (DICTYOPTERA: BLATTELLIDAE)

Commercial formulations of avermectin based baits were evaluated in laboratory and field studies against the German cockroach, Blattella germanica (L.). In continuous exposure tests with adult males, LT50s ranged from ca. 2.5 to >200d for Roach Ender and an experimental aerosol gel formulation, r...