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Spider silk structure: crystalline beta-sheets separated by amorphous linkages. Silks have a hierarchical structure. The primary structure is the amino acid sequence of its proteins (), mainly consisting of highly repetitive glycine and alanine blocks, [4] [5] which is why silks are often referred to as a block co-polymer.
Spiders make spider silk for various purposes such as weaving their webs, protecting their eggs or as a safety line. The amphipod Peramphithoe femorata uses silk to make a nest out of kelp blades. Another amphipod, Crassicorophium bonellii, use silk to build shelter. Carp produce fibroin units, a component of silk, to attach their eggs to rocks ...
Sericulture, or silk farming, is the cultivation of silkworms to produce silk. Although there are several commercial species of silkworms, the caterpillar of the domestic silkmoth is the most widely used and intensively studied silkworm.
The silk generated by the male P. mira is rather versatile; when courting a female nursery web spider, the male spider offers her a "nuptial gift," usually a prey wrapped up in the male's silk. This act of gift-giving serves as the first stage of mating, preceding copulation.
Silkhenge structures are a means of spider reproduction used by one or more currently-unknown species of spider. It typically consists of a central " spire " constructed of spider silk , containing one to two eggs, surrounded by a sort of fence of silk in a circle.
The Tajima Yahei Sericulture Farm (旧田島弥平旧宅, Tajima Yahei kyū-taku) is located in the Sakaishima neighbored of the city of Isesaki, Gunma. It was the former home of an influential silk farmer in the early Meiji period , known for writing a new sericulture theory which laid the foundations for modern sericultural production.
A spinneret is a silk-spinning organ of a spider or the larva of an insect. Some adult insects also have spinnerets, such as those borne on the forelegs of Embioptera. [1] Spinnerets are usually on the underside of a spider's opisthosoma, and are typically segmented. [2] [3] While most spiders have six spinnerets, some have two, four, or eight. [4]
A classic circular form spider's web Infographic illustrating the process of constructing an orb web. A spider web, spiderweb, spider's web, or cobweb (from the archaic word coppe, meaning 'spider') [1] is a structure created by a spider out of proteinaceous spider silk extruded from its spinnerets, generally meant to catch its prey.