What type of survivorship curve do elephants have?Įlephants have a Type I survivorship curve (mortality increases with age), and fecundity decreases with age. Finally, Type III curves show a population that loses most of its population early on and then a smaller percentage live to the end of the life cycle.
Trees and marine invertebrates exhibit a type III survivorship curve because very few of these organisms survive their younger years, but those that do make it to an old age are more likely to survive for a relatively long period of time. They are typical of species that produce few offspring but care for them well, including humans and many other large mammals.Īlso to know, which organism is most likely to have a type III survivorship curve? Certain lizards, perching birds, and rodents exhibit this type of survivorship curve.Īlso Know, which type of survivorship curve applies to humans? Type I or convex curves are characterized by high age-specific survival probability in early and middle life, followed by a rapid decline in survival in later life. In contrast, the Type II curve considers birds, mice, and other organisms characterized by a relatively constant mortality or survivorship rate throughout their life expectancies. In respect to this, what organisms have a Type 2 survivorship curve? survivorship curve, which starts out as type III, but becomes type I later in life, indicating high juvenile mortality followed by low adult mortality and. Organisms with this type of survivorship curve may also have relatively few offspring and provide significant parental care. In a Type II curve, organisms die more or less equally at each age interval. Many bird species have a Type II survivorship curve.