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Most spinnerets are not simple structures with a single orifice producing a single thread, but complex structures of many microscopic spigots, each producing one filament. This produces the necessary orientation of the protein molecules, without which the silk would be weak and useless. Spigots can
174:) led to questions about the origins of spinnerets. It was hypothesised that spinnerets in spiders were originally used as climbing aids on the feet and evolved and were used for webmaking at a later time.
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Pechmann, Matthias; Khadjeh, Sara; Sprenger, Frederik; Prpic, Nikola-Michael (2010). "Patterning mechanisms and morphological diversity of spider appendages and their importance for spider evolution".
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115:, and another kind of spigot found in sets of three, referred to as cylindrical gland spots, are found only in females and used for making egg sacs. The desert grass spider,
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be singular or found in groups, which also permits spiders to combine multiple filaments in different ways to produce many kinds of silk for various purposes. Spinneret
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330:"Spinneret Silk Spigot Morphology: Evidence for the Monophyly of Orbweaving Spiders, Cyrtophorinae (Araneidae), and the Group Theridiidae Plus Nesticidae"
95:, and are typically segmented. While most spiders have six spinnerets, some have two, four, or eight. They can move both independently and in concert.
133:, to transfer sperm, to entrap insects by wrapping it around them, to make egg-cases, to manipulate static electricity in the air, and to fly (
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of a specimen and the specific morphology of a spigot can determine its use as well. For example, flagelliform spigot is unique to
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Imms' General
Textbook of Entomology: Volume 1: Structure, Physiology and Development Volume 2: Classification and Biology
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weave silken galleries for protection from predators and the elements while foraging and breeding.
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Gorb, SN; Niederegger S; Hayashi CY; Summers AP; Votsch W; Walther P (September 28, 2006).
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A barn spider encases her prey in silk emanating from her spinneret seen in the foreground.
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Observations suggesting that there might be silk-producing organs on the feet of the zebra
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has especially prominent spinnerets that extend out of the end of their abdomen.
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Ventral aspect of spinnerets of spider species with unusually long spinnerets.
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This article is about the spider or insect organ. For other uses, see
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435:"Bio materials: silk-like secretion from tarantula feet"
91:. Spinnerets are usually on the underside of a spider's
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of spiders use silk extruded from spinnerets to build
374:, University of California Press, pp. 105–106,
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256:"Gardening to Distraction: Along came a spider"
494:Electron microscope image of spider spinnerets
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340:(1). American Arachological Society: 71–95.
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316:Spider Identification – Types of Spiders
328:Coddington, Jonathan A. (Spring 1989).
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192:; placed ventrally below the posterior.
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408:Richards, O. W.; Davies, R.G. (1977).
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144:) extrude silk to make a protective
283:Arthropod Structure and Development
254:Wiggins, Charlotte (Nov 10, 2013).
43:Australian garden orb weaver spider
820:. You can help Knowledge (XXG) by
368:"FAMILY CLUBIONIDAE • Sac Spiders"
366:Bradley, Richard A. (2012-12-18),
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372:Common Spiders of North America
235:INSECTA: EMBIOPTERA (EMBIIDINA)
140:Some insect larvae (including
27:External body part of a spider
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318:, Retrieved December 1, 2013
244:, Retrieved December 1, 2013
618:List of families of spiders
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334:The Journal of Arachnology
186:The compact spinnerets of
32:Spinneret (disambiguation)
29:
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295:10.1016/j.asd.2010.07.007
59:visible below red abdomen
623:Lists of spider species
262:. Therolladailynews.com
152:. The insects known as
816:-related article is a
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41:The spinnerets of an
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412:. Berlin: Springer.
260:The Rolla Daily News
171:Aphonopelma seemanni
56:Phidippus adumbratus
737:Cultural depictions
451:2006Natur.443..407G
53:Black spinneret of
240:2013-12-03 at the
189:Argiope bruennichi
118:Agelenopsis aperta
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154:web spinners
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742:Spider bite
696:Palpal bulb
686:Opisthosoma
651:Calamistrum
556:Cannibalism
538:Arachnology
266:December 1,
93:opisthosoma
861:Categories
763:Spider web
661:Chelicerae
603:Mesothelae
546:Ballooning
395:2020-12-08
222:References
148:for their
135:ballooning
113:Araneoidea
101:morphology
89:Embioptera
71:-spinning
18:Spinnerets
711:Spinneret
671:Cribellum
646:Book lung
561:Evolution
351:31 August
166:tarantula
160:Evolution
142:silkworms
103:can help
65:spinneret
786:Category
701:Scopulae
691:Pedipalp
590:Taxonomy
571:Glossary
551:Behavior
469:17006505
303:20696272
238:Archived
137:), etc.
125:Various
681:Exuviae
676:Epigyne
633:Anatomy
530:Spiders
477:4415648
447:Bibcode
346:3705406
127:species
79:or the
814:spider
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439:Nature
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344:
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146:cocoon
85:insect
83:of an
77:spider
812:This
473:S2CID
342:JSTOR
109:taxon
81:larva
75:of a
73:organ
67:is a
818:stub
756:Webs
706:Silk
465:PMID
414:ISBN
384:ISBN
353:2020
299:PMID
268:2013
131:webs
69:silk
455:doi
443:443
376:doi
291:doi
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