Are r-selected species humans?
Are r-selected species humans?
r-selection: On one extreme are the species that are highly r-selected. r is for reproduction. Such a species puts only a small investment of resources into each offspring, but produces many such low effort babies….r- and K-selection.
| Characteristic | r | K |
|---|---|---|
| Early mortality | high | low |
Are humans R strategists or K strategists?
Bacteria, insects and corals are few examples of r strategists while human, primates, and elephants are few examples of K strategists. One other notable difference between r strategist and K strategist is their sizes. The r strategist is smaller in size while the K strategist is larger.
What reproductive strategy do humans have?
While males generally pursue a short-term mating strategy when possible, females typically pursue a long-term mating strategy. Long-term strategies are characterized by extended courtships, high investment, and few sexual partners.
Are humans generalists or specialists?
sapiens are often highlighted as a classic example of a generalist species in this regard, local populations of our species are also able to specialize in the use of different food webs through time; hence, the generalist specialist.
What characteristics do humans share with R-selected species?
K and r Reproductive Strategies
| Characteristics of r- and K-selected organisms | |
|---|---|
| r-organisms | K-organisms |
| have large litters | have small litters |
| reproduce at an early age | reproduce at a late age |
| fast maturation | slow maturation |
How do humans breed?
Humans mate through a process called sexual intercourse. Human reproduction depends on the fertilization of a woman’s ova (egg) by a man’s sperm.
What is R and K reproductive strategy?
The symbols r and K originate in the mathematics of population biology and refer to 2 ends of a continuum in which a compensatory exchange occurs between gamete production (the r-strategy) and longevity (the K-strategy).
Are humans invasive species?
1) An invasive species is widespread: Humans, which can be found on every continent, floating on every ocean and even circling the skies above certainly meet this aspect of invasiveness.
What is an example of a generalist species?
Raccoons (Procyon lotor) are an example of a generalist species. They can live in a wide variety of environments, including forests, mountains, and large cities, which they do throughout North America.
Are humans semelparous?
An example of an iteroparous organism is a human—humans are biologically capable of having offspring many times over the course of their lives. Iteroparous vertebrates include all birds, most reptiles, virtually all mammals, and most fish.