Lek mating females away from the hotshot. A manipulative experiment using the little bustard, "Tetrax tetrax", was done to test the various lek evolution models. The experiment involved varying the size and sex ratio of leks using decoys. To test whether or not the presence of a hotshot determined lek formation, a hotshot little bustard decoy was placed within a lek. After the fake hotshot was added to the lek, both male and female visitation to the lek increased. The hotspot model considers the female density to be the catalyst for the clustering of males. This model predicts that leks will form
Ben 10: Secret of the Omnitrix exclusively at Walmart stores. However, neither of the alternate versions were on the disc, merely the original with Heatblast, but the fourth season DVD contains all four versions, plus the pop up trivia version. The film comprises the three episodes of the fourth season, and is a finale to the series canonically. During a battle with Dr. Animo, Ben Tennyson's destruction of the scientist's "DNA bomb" accidentally sets off a self-destruct protocol in the Omnitrix. Its activation alerts Tetrax Shard, a bounty hunter and ally, who travels with his alien slime -like pilot Gluto to Earth in order to retrieve