Keystone species mussel population explodes uncontrollably, driving out most other species. These creatures need not be apex predators. Sea stars are prey for sharks, rays, and sea anemones. Sea otters are prey for orca. The jaguar, whose numbers in Central and South America have been classified as near threatened, acts as a keystone predator by its widely varied diet, helping to balance the mammalian jungle ecosystem with its consumption of 87 different species of prey. The lion is another keystone species. Keystone mutualists are organisms that participate in mutually beneficial interaction and the loss of which would have a profound impact upon
Barbary dove This class of muscles is usually found in high speed tissue such as a rattlesnake's tail. Barbary doves are the first bird species to have been found to have this class of muscle. Feral populations of Barbary doves establish themselves readily as a result of escapes or releases from captivity, but they will merge with local populations of Eurasian collared doves if they exist. Barbary dove The Barbary dove, ringed turtle dove, ringneck dove, ring-necked turtle dove, or ring dove ("Streptopelia risoria") is a domestic member of the dove family (Columbidae). Although the Barbary dove is normally assigned its own