larval stage - définition. Qu'est-ce que larval stage
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Qu'est-ce (qui) est larval stage - définition

JUVENILE FORM OF DISTINCT ANIMALS BEFORE METAMORPHOSIS
Larvas; Larval; Larval forms; Larva (zoology); Larval stage; Larval Forms; Lavriform; Larvule; Larvae; Nepionic stage; Nectochaete
  • ''[[Eurosta]] solidaginis'' Goldenrod Gall Fly larva
  • The larvae of the [[Hercules beetle]] (''Dynastes hercules'') are among the largest of any species of insect
  • Campodeiform larva of ''[[Micromus]]'' sp.
  • Larva of the ''[[Papilio xuthus]]'' [[butterfly]]

larval stage         
Describes a period of monomaniacal concentration on coding apparently passed through by all fledgling hackers. Common symptoms include the perpetration of more than one 36-hour hacking run in a given week; neglect of all other activities including usual basics like food, sleep, and personal hygiene; and a chronic case of advanced bleary-eye. Can last from 6 months to 2 years, the apparent median being around 18 months. A few so afflicted never resume a more "normal" life, but the ordeal seems to be necessary to produce really wizardly (as opposed to merely competent) programmers. See also wannabee. A less protracted and intense version of larval stage (typically lasting about a month) may recur when one is learning a new OS or programming language. [Jargon File]
Larva         
A larva (; plural larvae ) is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle.
larva         
(larvae)
A larva is an insect at the stage of its life after it has developed from an egg and before it changes into its adult form.
The eggs quickly hatch into larvae.
N-COUNT

Wikipédia

Larva

A larva (; plural larvae ) is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle.

The larva's appearance is generally very different from the adult form (e.g. caterpillars and butterflies) including different unique structures and organs that do not occur in the adult form. Their diet may also be considerably different.

Larvae are frequently adapted to different environments than adults. For example, some larvae such as tadpoles live almost exclusively in aquatic environments, but can live outside water as adult frogs. By living in a distinct environment, larvae may be given shelter from predators and reduce competition for resources with the adult population.

Animals in the larval stage will consume food to fuel their transition into the adult form. In some organisms like polychaetes and barnacles, adults are immobile but their larvae are mobile, and use their mobile larval form to distribute themselves. These larvae used for dispersal are either planktotrophic (feeding) or lecithotrophic (non-feeding).

Some larvae are dependent on adults to feed them. In many eusocial Hymenoptera species, the larvae are fed by female workers. In Ropalidia marginata (a paper wasp) the males are also capable of feeding larvae but they are much less efficient, spending more time and getting less food to the larvae.

The larvae of some organisms (for example, some newts) can become pubescent and do not develop further into the adult form. This is a type of neoteny.

It is a misunderstanding that the larval form always reflects the group's evolutionary history. This could be the case, but often the larval stage has evolved secondarily, as in insects. In these cases the larval form may differ more than the adult form from the group's common origin.

Exemples du corpus de texte pour larval stage
1. Caterpillars are the larval stage of insects from the order Lepidoptera, which include butterflies and moths.