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- Elofsson, Rolf, et al.
(author)
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Localization of monoaminergic neurons in the central nervous system of Astacus astacus Linne (Crustacea, Decapoda)
- 1966
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In: Zeitschrift für Zellforschung und mikroskopische Anatomie. ; 74, s. 464-473
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Journal article (peer-reviewed)abstract
- The cellular localization of biogenic monoamines in crustaceans was studied by means of a highly specific and sensitive fluorescence method devised by Falck and Hillarp. It was found that neurons displaying specific fluorescence in the central nervous system were confined to the protocerebrum, the medulla externa and interna and the ventral nerve cord. The method allows a distinction between the fluorophores of 5-hydroxytryptamine (and 5-hydroxytryptophan), which emit the yellow light, and the fluorophores deriving from the catecholamines (and DOPA), which emit the green light. Green-fluorescent neurons occurred abundantly in the aforementioned parts of the central nervous system while yellow-fluorescent neurons were sparsely present in the same parts.
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| 3. |
- Elofsson, Rolf, et al.
(author)
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The ultrastructure of the chromatophores of Crangon and Pandalus (Crustacea)
- 1971
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In: Journal of Ultrastructure Research. - 0022-5320. ; 36, s. 263-270
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Journal article (peer-reviewed)abstract
- The ultrastructure of the chromatophores of two decapod crustaceans, Crangon crangon and Pandalus borealis, is investigated. The pigment appears macroscopically as small units, so-called chromatosomes. These contain separate chromatophores of different colors, and each color is composed of several chromatophores. Each chromatophore contains pigment granules, tubuli (ca. 210 Å), a network of cisternae of the endoplasmic reticulum, and mitochondria. A close contact exists between the cisternae and the pigment granules. The tubuli are arranged in thick bundles in the chromatophore extensions. The pigment granules of chromatophores of different colors are found to be structurally different. This phenomenon, as well as the structure of the whole chromatophore, is related to the vertebrate chromatophores.
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