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.
Twelve Native Milkweeds for Monarchs. The monarch butterfly population in North America has plummeted by over 90% in just the last 20 years. Destruction of Americaâs grasslands ecosystems, commercial agricultural practices and even conventional gardening have all contributed to the precipitous decline of this iconic species.