Structure and chemical composition of the cuticle ofCirolaua fluviatilis, Sphaeroma walked andSphaeroma terebrans

Vallabhan, D Leela

doi:10.1007/bf03186060

Cited by 6 publications

(1 citation statement)

References 5 publications

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“…Generally, this layer has been reported in the carapace of decapod crustaceans. In several reports this layer is neither mentioned nor visible in cuticle sections (Halcrow 1976, 1978, Schultz and Kennedy 1977, Vallabahn 1982, Arsenault et al 1984, Powell and Halcrow 1984, Cameron 1985, Cuzin-Roudy and Tchernigovtzeff 1985. Moreover, the membranous layer has also been found in some copepods and one ostracod (Okada 1982), but is reported to be missing in other ostracods (Bate and East 1972).…”

Section: Membranous Layermentioning

confidence: 96%

Comparative ultrastructure of the cuticle of some pelagic, nektobenthic and benthic malacostracan crustaceans

Pütz

Búchholz

1991

Mar. Biol.

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The ultrastructure of malacostracan integument was examined and compared in 11 species collected primarily from the western Baltic Sea in 1989, of which eight species were studied for the first time (indicated below by an asterisk). We attempted to relate cuticle structure and thickness to swimming aptitude. The pelagic euphausiid Meganyctiphanes norvegia and the mysids Praunus flexuosus* and Neomysis integer* displayed a thin, little-mineralized, and thus light-weight cuticle. Laminae of the endocuticle were very thin (0.1/~m) relative to those of the exocuticle (1/~m). In contrast, laminae in the procuticles of the benthic amphipods Gammarus locusta, Caprella linearis*, Corophiurn volutator*, Orchestia garnrnarellus*, and the isopod Idotea baltica were evenly distributed, comparatively thick (1 to 2/~m), and more heavily mineralized. The nektobenthic amphipod Hyperia galba*, the cumacean Diastylis rathkei* and the decapod Crangon crangon* migrate between pelagic and benthic regions. Only near the hypodermis did these organisms exhibit the characteristically pelagic fine-layered endocuticle. A membranous layer was lacking in all species investigated. In contrast to the less-mineralized cuticles of the species analyzed here, a membranous layer appears to be restricted to crustaceans with heavily calcified shells. Ultrastructural results were substantiated by morphometric calculations, which indicated differences in thickness of the total cuticle relative to body volume. In the pelagic malacostracans, thickness of the cuticle did not increase with body volume over the size range investigated.

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