Final answer:
Semelparity describes the reproductive strategy where animals mate only once and then die after the single reproductive event.
Step-by-step explanation:
The term that describes animals that mate only once during their entire life is semelparity. Organisms exhibiting semelparity employ a life history strategy characterized by a single reproductive event followed by death. This is opposed to iteroparity, which is where species can reproduce multiple times throughout their lives. Semelparous species devote most of their resources to a sole reproductive effort, often at the expense of their own survival post-reproduction. Examples include certain plants like bamboo and animals such as the Chinook salmon, which uses its energy reserves to migrate and reproduce, and then dies shortly after.
Animals that mate only once during their entire life are described as semelparous species. Semelparity occurs when a species reproduces only once during its lifetime and then dies. Examples of semelparous species include bamboo, which flowers once and then dies, and the Chinook salmon, which reproduces once and then dies after migrating from the ocean to its freshwater nesting area.