More on Cocoon
Pupa - name for the third stage in the life of an insect that undergoes complete metamorphosis, i.e., develops from the egg through the larva and the pupa stages to the adult. A complete metamorphosis is ch...
COCOON
A cocoon is a protective covering, made of silk, which protects a moth pupa (and some other insects). The cocoon is spun from the abdomen of the larva (caterpillar) before it pupates.
The cocoon is made of a single continuous thread of raw silk from 300 to 900 meters (1000 to 3000 feet) long. The fibers are very fine and lustrous, about 10 micrometers (1/2500th of an inch) in diameter.
The cocoons are soaked in hot water to soften the sticky gum that holds the threads together. Each cocoon is brushed to find the end of the single thread. The threads of eight cocoons are unwound at the same time by reeling machines.
co, Cocoon. an, Antenna. ex, Exuvium.
(From Cheshire's Bees and Bee-keeping.) are degraded maggots; they have no legs, but possess fairly well-developed heads.
In the cocoon stage you begin to "make-believe." You read as much as you can about the career. You imagine yourself practicing it.
Fish make cocoons to sleep safely Parrotfish make sleeping cocoons to "tuck themselves in" and remain protected from parasites, scientists say.
Elsewhere on the web
Animal Diversity Web (animaldiversity.ummz.umich.edu) ...
The egg-shaped cocoons of silk that incorporate leaves may remain attached to branch or fall with leaves in autumn. Adults will emerge the following June.
Cocoon The silken case spun by many moth larvae as a protection for their pupae. Compound Eye Eye composed of many units, each with a lens or facet.
The cocoon, or egg case, is secreted by the clitellum, the external glandular band which is near the front of the worm, but behind the spermathecae.
The period in which adults emerge from cocoons extends over 2 months [10,11,14]. Adult barrens dagger moths are typically active from June to August [9,10] but have been documented from late May to September in New Jersey and Missouri [14].
The clitellum secretes a tough gelatinous cocoon which contains nutrients, and it is in this that the eggs are deposited. The leech shrugs itself free of the cocoon, sealing it as it passes over the head.
It is protected by the mud it has burrowed into, as well as a mucous cocoon which becomes hard once it dries.
Searching is done at random, with the woodpecker looking for likely spots for cocoons or locating the exact spot by tapping with the beak.
It makes a dry, watertight cocoon for itself, which prevents the evaporation of body fluids; it loses approximately half of the water that a frog without a cocoon looses.
When I dig him out of the substrate, you can see that he is wrapped in a cocoon and looks as shriveled as a prune. When I place him in shallow water, he expands like a balloon and I better have plenty of food ready -- he is HUNGRY! ...
The Yucca Moth, emerging from her cocoon, flies at night to a Yucca flower and collects pollen from the stamens, holding a little ball of it in her mouth-parts. She then visits another flower and lays an egg in the seed-box.
Silk threads, plucked from the cocoon of the mulberry caterpillar, have been woven into luxurious fabrics for more than 4,000 years. More than 10 million farmers raise silkworms today in China, producing about one-half of the world's supply.
Some species of parrotfish secrete a mucus cocoon around them before they rest, protecting them from predators that hunt by smell (morays) or by touch (crustaceans).
These spiders spin large webs in which females suspend a cocoon with hundreds of eggs. Spiderlings disperse soon after they leave their eggs, but the web remains.
Some species do both: they lay cocoons and also shield the cocoon with their body and wait for the babies to hatch. The young then cling to the underside of that parent for several weeks, until they are able to venture into the world on their own.
Its caterpillars spin large brown cocoons that change to gray with age. The cocoon is attached along one entire side to a branch, sometimes incorporating the branch and even twigs into its structure.
After the last shedding, the caterpillar fastens to a branch and enters the pupa or chrysalis stage; moth caterpillars use a silk thread from their silk glands to spin a protective cocoon.
Most of the frog’s life is spent underground, lying dormant in a cocoon of its shed skin, living off fat reserves.
These include: feather, hair, wool, spider cocoons, strips of bark, rootlets, moss, and trash. The male wren finds dry sticks, which he adds to the nest.
During the dry season the African bullfrog buries itself deep in the soil and covers itself with a cocoon. The cocoon is made up of layers of dead skin and prevents water loss.
Parrotfish secrete mucus from their skin, creating a "cocoon" to wrap themselves in during the night. This cocoon serves to hide their scent from the nocturnal predators that are patrolling the coral reefs looking for a meal.
Puss moths start life as caterpillars which eventually fortify themselves in a cocoon where they transform into the adult moth. The puss moth cocoon is known to be one of the hardest of all moth species.
Both sexes build a cup shaped nest from a variety of plant material including mosses, lichen, leaves as well as cocoon silk. The nest is built in the horizontal forks of a tree or shrub.
If the siren's body of water dries up it can burrow in the mud bottom and secrete a cocoon of mucus and shed skin that covers its body to prevent water loss.
Gourd-shaped hanging pocket, woven around and supported by twigs; of moss, lichen, leaves, cocoons, grass, flowers, secured by spider web, lined with plant down, hair, feathers. Built in 13-51 days.
EGGS:
White, unmarked. 0.6" (14 mm).
Spider - A predatory arachnid that usually has silk-spinning organs at the back end of the body; they spin silk to make cocoons for eggs or traps for prey.
Life Cycle Caterpillar usually black with rows of yellow or reddish spots; overwinters in decayed leaf litter and pupates in thin silken cocoon in spring.
The materials are usually the bark of the grape-vine, the silk of large cocoons, some lichens, particles of hornets' or wasps' nests, and decayed worm-eaten leaves.
In most circumstances, they need a permanent or semi-permanent body of water but they are able to move short distances over land or stay encased in a cocoon of slime if drought occurs.
The bowl-shaped nest is made of twigs, grass, lichen, moss and bark fastened together with spider webs and insect cocoons. The nest is lined with grass, moss, fur and feathers. The female will help build the nest.
When the larvae are ready, they become pupae (like cocoons) and are moved by their parents to a separate part of the gallery, where they rest until becoming adults.
After mating, the female lays up to 80 eggs in a cocoon in her burrow during the summer and guards them until the spiderlings hatch in July or August.
Males patrol habitat to find females; after mating they attach a pouch to female to prevent multiple matings. Females lay single eggs scattered on the host plant. Caterpillars feed at night at the base of host plant and pupate in a loose silk cocoon ...
Turbellarians are simultaneous hermaphrodites and lay eggs bundled into cocoons. The young undergo direct development and hatch as juveniles. Spiral cleavage is prevalent. Some turbellarians can reproduce asexually by fission.
They transform multiple layers of shed skin and mucous into a cocoon that protects their bodies from water loss. Wrapped up in these watertight layers, the frogs can remain in a hibernation-like state until conditions improve-up to 10 months.
During the dry season they taking refuge in tree hollows or cover themselves in a cocoon to keep moist.
They spin mats on which they rest and make pathways of silken threads to feeding sites. Pupation takes place in white, silken cocoons, often within rolled leaves. Adults emerge in July, mate, and lay eggs.
The siren is able survive periods of drought by burrowing into the muddy substrate and forming a cocoon of mucus and shed skin. Because it its secretive habits, little is known about the ecology of this species.
Other materials are added as lining and camouflage, including plant fibers, seed plumes, feathers, animal hair, insect cocoons, and fern hairs. Female may remove materials from old nests to use in new nests.
Plant material may include roots, tubers, buds, stems, leaves, flowers, fruits, seeds, as well as other portions of the plants. Animals may include adults, larvae, pupae, eggs, and cocoons.
The pupa is not made within a cocoon. Pupation may be extremely fast: after 4 days only the new adult enters life. Usually pupation takes longer, but rarily over 4 weeks. The Alder Fly is common over much of Britain and continental Europe.
 See also: Caterpillar, Moth, Spider, Burro, Pupa
|
