What is Paedomorphic?
What is Paedomorphic?
paedomorphosis, also spelled Pedomorphosis, retention by an organism of juvenile or even larval traits into later life.
What is an example of Paedomorphosis?
Amphibians are the known best example of paedomorphosis. They will arrest the development in larval. So, some aquatic species will continue their sexual maturity inside the organism, they are capable to reproduce. In some other species, few morphological features are retarded.
Are humans Paedomorphic?
It has been proposed that some of the differences between bonobos and chimpanzees (and, in fact, humans and other apes ), can be explained by paedomorphism — the retention of juvenile traits into adulthood.
What is Paedomorphosis in evolution?
paedomorphosis The evolutionary process in which larval or juvenile features of an ancestral organism are displaced to the adult forms of its descendants. It can arise by neoteny or progenesis.
What animals are Paedomorphic?
Paedomorphosis is an alternative process to metamorphosis in which adults retain larval traits at the adult stage. It is frequent in newts and salamanders, where larvae reach sexual maturity without losing their gills.
What is the difference between Paedomorphosis and Peramorphosis?
Classifying Heterochrony. Heterochrony can be separated into two different types: paedomorphosis (literally “child-shape”) and peramorphosis (literally “beyond-shape”).
What are benefits of Paedomorphosis?
Newts that never grow up – paedomorphosis in salamanders The advantage of this life history is that it allows adults to exploit different habitats to larvae, utilise a wider range of ecological niches and escape from potentially hostile environments e.g. a desiccating pond.
How many types of Paedomorphosis are there?
There are two types of paedomorphosis found in urodeles. i. Obligatory Paedomorphosis: Some species of urodeles or larval stages always remain mature permanent larval stages.
What is Paedomorphosis quizlet?
what is paedomorphosis? if the rate of reproductive development accelerates compared to somatic development, then a sexually mature stage can retain juvenile structures. so, it is retention of ancestral juvenile character by later ontogenetic stages of descendants.
What is the difference between Paedomorphosis and neoteny?
One way to classify these terms might be as follows: I) Paedomorphosis = retention of juvenile characters by adults. A) Neoteny = retention of juvenile characters by adults.
What is the difference between neoteny and Paedomorphosis?
Paedomorphosis and neoteny represent two qualitatively different phenomena: neoteny is an adaptive modification of ontogeny, whereas paedomorphosis is its transformation in the course of evolution.
What is the meaning of paedomorphic?
Definition of paedomorphic : of, relating to, involving, or exhibiting paedomorphosis or paedomorphism : of, relating to, or involving paedomorphosis or paedomorphism
What is a paedomorphic condition in porpoises?
(2011) described a paedomorphic condition in Porpoises based on some skeletal characters such as short rostrum and scarce closure of cranial sutures. 2001: Paedomorphic features and allometric growth in the skull of Elephas falconeri from Spinagallo (Middle Pleistocene, Sicily).
What is the evolutionary significance of paedomorphosis?
Such shifts of reproductive capability would appear to have adaptive significance to organisms that exhibit it. In terms of evolutionary theory, the process of paedomorphosis suggests that larval stages and developmental phases of existing organisms may give rise, under certain circumstances, to wholly new organisms.
Do paedomorphic facial expressions give dogs an advantage?
Paedomorphic facial expressions give dogs a selective advantage. A new species of subterranean blind salamander from Austin, Texas, and a systematic revision of central Texas paedomorphic salamanders.