Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract Full Text

Relationship between ants Pheidole megacephala (Hymenoptera: Formicidae) and some dead animals tissue.


An ants Pheidole megacephala is a highly invasive insect, although the degree of invasiveness differs geographically. Collection of Pheidole megacephala (Hymenoptera: Formicidae) was obtained and their behavior towards decomposed animal tissues was investigated. This study focused on three parameters: Use of animal grazing chickens, cow liver, chicken gizzard, and sardine. After calculating the number of ants that colonized on each of the mentioned bait, chickens attracted the largest number of ants followed by the tissue of chicken gizzard. The other side of the study was done by place the carcass of hens in a cage for three days. By observing the behavior of the attracted ants, large numbers of ants (371) were found to transport the fly eggs in the body out. The other (78) fed on the body's discharge, while another bitten the body and another died on the body. Thirdly, three bodies of chickens were placed closed to the ant's nests and three others were placed away from them. Decomposition speed in both cases was calculated and temperature and humidity were recorded. Showing that the rate of decomposition of the carcass in the presence of ants was slower than none. This is due to the effectiveness of ants that hinder the effectiveness of other insect larvae feeding on this carcass. Ants feed on eggs and other insect larvae, especially dipteran insects. This led to reduces the consumption rate of the carcass by those infected insects (Necrophagous species). This due to misleading the calculation of the real death time of a body by criminal investigators.