Ambush predators depend on appendage speed more than body speed

Evidence

The success of all of these ambush and stalking predators hinges on a quick strike with a weapon that immediately incapacitates its victim. Speed matters, but it’s not the sprint speed of the whole animal that determines the success or failure of these hunts. Instead, it’s the speed of the appendage that matters—how fast it springs out from the body. Here, bigger weapons are almost always better: longer claspers or jaws can reach out farther from the body; bigger appendages can house stronger, thicker skeletal elements incorporating greater elastic recoil and bigger, faster muscles; and hooks or claws at the ends of these appendages move faster the farther they are from a joint or hinge; longer appendages fly through air or water faster than shorter ones. — Emlen, Douglas J, Animal Weapons_ The Evolution of Battle, 123

Categorization

  • XREF: connects to: Ambush predators evolve large weapons because they strike rather than chase prey — Emlen, Douglas J, Animal Weapons_ The Evolution of Battle, 956; Ambush predation releases predators from chasing speed, allowing extreme weapon evolution.; Ambush predators sacrifice locomotion speed for close-range striking power — Emlen, Douglas J, Animal Weapons_ The Evolution of Battle, 113 (+1 more)

Broader Connections