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Maturation is the increase in the state of maturity. The dynamic energy budget theory uses this concept to quantify changes in the life history of individuals. If the investment into maturation exceeds a threshold value, a life history event is triggered. This investment of reserve into maturation technically represents an accumulation of information, but not of mass or energy. So the material products of this investment leave the organism, mostly in the form of carbon dioxide, nitrogen-waste and water. Maturity may refer to: Sexual maturity Maturity, a geological term describing hydrocarbon generation Maturity, a financial term indicating the end of payments of principal or interest Look up Maturity in Wiktionary, the free dictionary. ... Dynamic Energy Budget (DEB) theory aims to identify simple quantitative rules for metabolic organisation of individual organisms that can be understood from basic physical chemical principles, such as conservation of mass, energy and time, relationships between surface area and volume, and stoichiometric constraints on production. ... Carbon dioxide is a chemical compound composed of one carbon and two oxygen atoms. ...

Examples of life history events are

• Birth: food acquisition is initiated. Individuals leave the embryonic stage and enter the juvenile stage.
• Puberty: allocation to reproduction is initiated, while that to maturation is ceased. Individuals leave the juvenile stage and enter the adult stage
• Division of unicellular organisms. Cells divide into two (or more) daughter cells. This frequently follows after an early trigger to duplicate DNA (yet another life history event).

In practice these events take some time, but for simplicity's sake they are represented as point events in the DEB theory. Birth is the process in animals by which an offspring is expelled from the body of its mother. ... Puberty refers to the process of physical changes by which a childs body becomes an adult body capable of reproduction. ... This article or section does not cite its references or sources. ... The general structure of a section of DNA Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions for the biological development of a cellular form of life or a virus. ... Deb can mean: .deb, Debians package format A debutante, a young lady entering high society particularly at a ball Deb, a shortened form of Deborah This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ...

Birth typically precedes puberty, but not so in aphids, which have (formally) a negative juvenile period. In Oikopleura birth and puberty coincide, so they have a juvenile period of length zero. Families Adelgidae Aphididae Pemphigidae Phylloxeridae and several more Aphids (superfamily Aphidoidea) are small plant-sucking insects. ... Species Oikopleura dioica Oikopleura fusiformis Oikopleura labradoriensis Oikopleura vanhoeffeni Oikopleura is a genus of urchordates in the class Appendicularia. ...

Some organisms (most mammals, some sharks, peripatus) do not producs eggs but have foetuses that receive reserve from the mother via a placenta.This does not count as feeding in the context of the DEB theory; because the gut system is not active and no transformation from food to reserve takes place, only a transfer of reserve from the mother to the foetus. Orders Multituberculata (extinct) Palaeoryctoides (extinct) Triconodonta (extinct) Subclass Australosphenida Ausktribosphenida Monotremata Subclass Eutheria (excludes extinct ancestors) Afrosoricida Anagaloidea (extinct) Arctostylopida (extinct) Artiodactyla Carnivora Cetacea Chiroptera Cimolesta (extinct) Cingulata Creodonta (extinct) Condylarthra (extinct) Dermoptera Desmostylia (extinct) Dinocerata (extinct) Embrithopoda (extinct) Hyracoidea Insectivora Lagomorpha Leptictida (extinct) Litopterna (extinct) Macroscelidea Mesonychia (extinct) Notoungulata... Orders Carcharhiniformes Heterodontiformes Hexanchiformes Lamniformes Orectolobiformes Pristiophoriformes Squaliformes Squatiniformes Sharks are groups (superorder Selachimorpha) of fish, with a full cartilaginous skeleton and a streamlined body. ... Peripatus is a genus of Onychophora. ... Foetus can refer to: a fetus, an embryo in later stages of development Foetus, a band fronted by industrial music pioneer J.G. Thirlwell. ... The placenta is an ephemeral (temporary) organ present only in female placental mammals during gestation (pregnancy). ... Deb can mean: .deb, Debians package format A debutante, a young lady entering high society particularly at a ball Deb, a shortened form of Deborah This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ...