Ligature Strangulation. Strangulation is that form of asphyxia which is caused from constriction of the neck by ligature without suspending the body. Pulling a U-shaped ligature against the front and sides of the neck while standing at the back can cause death. It is of two types: [1] Strangulation by a ligature, and [2] manual strangulation or throttling.
What are the enemies of the monarch butterfly? The biggest threat to the monarch butterfly are wasps, bees, frogs, and especially people. Insects like to eat the eggs of monarch butterflies.
Monarch eggs and small larvae face considerable dangers of predation, and only about 5% of monarchs reach the last larval instar. Ants, spiders, true bugs, beetles, and lacewing larvae are some known predators of monarch eggs and larvae. In a laboratory experiment, one lacewing larva was observed consuming 40 monarch eggs. Chinese mantids and paper wasps have also been observed preying on immature monarchs.