Noun:

நாடுலஸை,

nauplius தமிழ் அர்த்தத்தின் உதாரணம்:

None

nauplius's Usage Examples:

The development begins with a free nauplius stage.

Development begins with a nauplius stage.

In those Copepods in which the palps of the mandibles as well as the antennae are biramous and natatory, the first three pairs of appendages retain throughout life, with little modification, the shape and function which they have in the nauplius stage, and must, in all likelihood, be regarded as approximating to those of the primitive Crustacea.

The mandibles, like the antennae, have, in the nauplius, the form of biramous swimming limbs, with a masticatory process originating from the proximal part of the protopodite.

The three pairs of appendages present in the " nauplius " larva show certain peculiarities of structure and development which seem to place them in a different category from the other limbs, and there is some ground for regarding the three corresponding somites as constituting a " primary cephalon.

Dr Bather justifiably anticipates further discoveries, but if, already in Silurian as in modern times, the members of these families had to pass through nauplius and cypris stages to maturity, there is one " enormous gap " between them and the common ancestor of the crustacean class that will not be easily filled.

The development usually begins with a nauplius stage (Sars, 1896, 1900).

In the nauplius larva they lie rather at the sides than in front of the mouth, and their basal portion carries a hook-like masticatory process which assists the similar processes of the mandibles in seizing food.

The antennules (or first antennae) are almost universally regarded as true appendages, though they differ from all the other appendages in the fact that they are always innervated from the " brain " (or preoral ganglia), and that they are uniramous in the nauplius larva and in all the Entomostracan orders.

As development proceeds, the body of the nauplius elongates, and indications of segmentation begin to appear in its posterior part.

They are absent in the earliest and most primitive B larval forms (nauplius), and appear only late in the course of development, after many of the trunk-limbs are fully formed.

Only the embryos of Leptodora are known to hatch out in the nauplius stage.