larva
active, immature stage of development; contrast with pupa
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
Larva
A larva (Latin; plural larvae) is a juvenile form of animal with indirect development, undergoing metamorphosis (for example, insects or amphibians).
Bipinnaria larva
In the class Asteroidea, the free-swimming, ciliated stage of larval development.
larva -- Among invertebrates, an immature stage in the life cycle which usually is much smaller than, and morphologically different from, the adult. In insects with metamorphosis, the larva must become a pupa before reaching adulthood.
larva pl. larvae
(lar-vuh) [L. ghost]
A free-living, sexually immature form in some animal life cycles that may differ from the adult in morphology, nutrition, and habitat.
lateral line system ...
larva A stage in the development of many insects and other organisms including sea urchins and sponges. In sponges, sexual reproduction results in the production of motile ciliated larvae.
Larva, Larvae (pl.): The immature stage between the egg and pupa of insects having complete metamorphosis where the immature differs radically from the adult (e.g., caterpillars, grubs).
Leafy greens: Lettuces and other leaf vegetables.
larva - immature (non-reproductive) post-embryonic form of many animals, which hatches from an egg and may look significantly different than the adult (reproductive) form.
Larvacea: A group of planktonic tunicates that secrete a gelatinous house, used to strain unsuitable particles (large particles are rejected).
larva - the growing immature stage of holometabolous insects; the neonate six-legged stage of mites and ticks; nematode immatures between the embryo and the adult ...
Larvacea The class of urochordates whose members are planktonic and whose adults retain a tail and notochord. With a gelatinous covering of the body.
larvaceans Tunicates that retain the body of a tadpole larva throughout life.
Larval stages of endoparasites often infect sites in the host other than the blood or gastrointestinal tract.
The larva of beetles of the genus tenebrio; both larvae and adults are important pests, destroying flour, meal, and other cereal products; they are also intermediate hosts of nematodes of the genus gongylonema, ...
The larvae are tended and fed by workers for 6 days — first with a protein-rich secretion called brood food, then with honey and a pollen/honey mixture called bee bread.
instar. The larval or nymph stage of an immature insect between successive molts.
Geneticists working on Drosophila melanogaster carried out genetic screens to find all the genes that played a role in setting up the early embryonic pattern of the larvae.
The larvae are bilaterally symmetrical and have the three chordate characteristics. Tunicate larva metamorphose into the sessile adult. Beating of numerous cilia lining the inside of the pharynx creates a current to move water through a tunicate.
However, their free-swimming larvae (embryos) are distinctly chordate and look similar to their relatives, the lancelets. The larvae have both a notochord and dorsal nervous system. The lancelets are members of the sub-phylum, cephalochordata.
There was a time in their lives when they were little larvae that they were swimming around the water all by themselves. The word larva is another way to describe them when they are babies.
Developmental stages in the larva are associated with the appearance of chromosomal puffs. These are where DNA is unwound and actively being transcribed.
- They are abundant in gardens, orchards and field crops such as cotton and soybeans, where they feed on caterpillar eggs, small larvae, aphids, fleahoppers, lygus bugs, leafhoppers, treehoppers and spider mites.
: Observations on Living, Growing Lymphatics in the Tail of the Frog Larva, Anat. Rec., 1909, iii.
2
HUNTINGTON, G.: The Genetic Principles of the Development of the Systemic Lymphatic Vessels in the Mammalian Embryo, Anat. Rec., 1910, iv.
complete metamorphosis
The change in an organism from larval to adult from where the larval stages look entirely different from the adult stage.
Ordered from the back pages of magazines, and rehydrated with salt water for just a few hours, the embryos begin hatching as nauplius larvae. See them hatch, and see the nauplii swim, bob and dart.
Problem 8: Embryonic origin of the segments of the adult fruit fly
During development of the fruit fly, the segments of the adult body, including head, three thoracic, and eight abdominal segments, derive from undifferentiated cells in the larva ...
The zebrafish is a model organism used to study the development of vertebrates. In this regard, zebrafish are useful because the embryo is transparent, it develops outside of its mother, and its development from eggs to larvae happens in just three ...
 See also: Organ, Animal, Trans, Plant, Animals
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