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.
National Wildlife Federation has launched a comprehensive campaign to help save the monarch, and there are many ways you can get involved. One of the biggest factors in monarch decline is the increasing scarcity of its only caterpillar host plant: milkweed. Without milkweed, monarchs canât successfully reproduce and the species declines.