Coexistence effects on behavioral and reproductive characteristics of invaders dung beetles

Some invasive dung beetles have a high biological plasticity, so they modify some characteristics of life story to persist in the ecosystems. We evaluated the coexistence effects on <em>Euoniticellus intermedius</em> and <em>Digitonthophagus gazella </em>under natural and laboratory conditions. The response variables that we measure were: number and weight of brood balls in the field, the number of emerged beetles, pronotum width of females emerged and the horn size of emerged beetles on laboratory.