Mechanical Attachment Devices

Wolff, Jonas; Gorb, Stanislav N.

doi:10.1007/978-3-319-45713-0_2

Cited by 1 publication

(3 citation statements)

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“…Many arthropod groups such as arachnids and insects, also show a wide variety of inflatable and adhesive soft protuberances, called "arolia", which are extended by internal hemolymph pressure and can be retracted by a flexor muscle. These structures are normally localized in the legs as, e.g., in scorpion prenymphs to attach to their mother's back (Wolf & Gorb 2016). However, they have also been described in the anal region in some parasitic species of mites, utilized to attach to their hosts (Wolf & Gorb 2016).…”

Section: Tablementioning

confidence: 99%

“…These structures are normally localized in the legs as, e.g., in scorpion prenymphs to attach to their mother's back (Wolf & Gorb 2016). However, they have also been described in the anal region in some parasitic species of mites, utilized to attach to their hosts (Wolf & Gorb 2016).…”

Section: Tablementioning

confidence: 99%

“…Mechanical adhesive methods based on interlocking or anchoring and increasing friction against a substrate are universal among metazoans because of their low biological cost (no need of material discharge), simplicity and efficiency (Wolf & Gorb 2016). These methods work in both aquatic and terrestrial environments with equivalent efficiency despite the different forces involved in each habitat (Ditsche & Summers 2014), and are, therefore, present in a broad variety of animal groups.…”

Section: Hydrophobicity and Adhesionmentioning

confidence: 99%

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The enigmatic kinorhynch Cateria styx Gerlach, 1956 – A sticky son of a beach

Herranz

Domênico

Sørensen

et al. 2019

Zoologischer Anzeiger

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Since its discovery in the mid-1950'ies, Cateria has been an enigmatic kinorhynch genus due to its aberrant worm-like shape and extremely thin cuticle. However, the rare occurrence of the species, only found in sandy intertidal habitats, and the poor preservation of the type material have hampered detailed studies of the genus over time. Now, sixty years after the original description of Cateria styx, we present an extensive morphological and functional study based on new material collected from its type locality in Maca e, Brazil. We combine live observations with detailed scanning electron microscopy data, new light microscopy material, confocal laser scanning microscopy and three-dimensional rendering. These observations show that C. styx displays a complex array of cuticular structures (spines, spinoscalids and extraordinarily complex cuticular ornamentation) that we interpret to be adaptations for mechanical adhesion, through friction and interlocking, in an interstitial habitat; the enigmatic dorsal organ, is a hydrostatic structure which function is inferred to be adhesive. Additional morphological traits in C. styx include: extremely elongated primary spinoscalids that cannot be completely retracted in the trunk; a reduced number of spinoscalids; sixteen elongated hairy patches in the introvert; fifteen trichoscalids that vary in length; the absence of a neck; dorsal spines being alternatingly displaced to either left or right side paradorsal positions; and high intraspecific variation in the number and position of glandular openings in the trunk.

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Section: Tablementioning

confidence: 99%

Section: Tablementioning

confidence: 99%