Semelparity and iteroparity are two reproductive strategies available to living organisms. A species is semelparous if it is characterized by a single reproductive episode before death, and iteroparous if it is characterized by multiple reproductive cycles. Iteroparity can be further divided into continuous iteroparity (e.g., primates, including humans and chimpanzees) and seasonal iteroparity ...
Here are 17 semelparous animals. In this article we look at each species and learn some interesting facts about them.
Semelparity versus Iteroparity Semelparity and iteroparity are two contrasting reproductive strategies available to living organisms. A species is considered semelparous if it is characterized by a single reproductive episode before death, and iteroparous if it is characterized by multiple reproductive cycles over the course of its lifetime. In truly semelparous species, death after ...
Examples of short-lived semelparous species include annual and biennial plants (including all grain crops, and many herbaceous vegetables), and certain invertebrate species, including many spiders ...
Some animal species are also semelparous, for example, Pacific salmon die after spawning. Male kalutas, Australian marsupials, are also semelparous. As the NYT describes it: “During these brief, frenzied breeding seasons, male kalutas mate with several females -- for up to 14 hours at a time -- until they succumb to exhaustion and die.”
Bamboos are typical examples of highly synchronized semelparous species. Inoue Mizuki, Ayaka Sato, Ayumi Matsuo, Yoshihisa Suyama, Jun-Ichirou Suzuki, Akifumi Makita 2014, 'Clonal Structure, Seed Set, and Self-Pollination Rate in Mass-Flowering Bamboo Species during Off-Year Flowering Events', PLoS ONE.
Many species are facultatively semelparous, others reproduce irregularly or opportunistically, and many comparisons between related iteroparous and semelparous species do not show measurable differences in factors affecting intrinsic rates of increase, including age‐specific rates of mortality. These situations are not uncommon in nature.