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[Histologische Untersuchungen Zum Hormonsystem Terrestrischer Isopoden (Porcellio Scaber Latr. Und Oniscus Asellus L. ) in Beziehung Zur Häutung, Histologische Untersuchungen Zum Hormonsystem Terrestrischer Isopoden (Porcellio Scaber Latr. Und Oniscus Asellus L. ) in Beziehung Zur Häutung]

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[In the whole central nervous system of Porcellio scaber Latr. and Oniscus asellus L. four neurosecretory cell types and their secretion activity are described in relation to the moult cycle. A transference of secretory material between the β-cells of the protocerebrum and the sinus gland was proved and the absence of an X-organ was established. As far as the sinus gland is concerned, evidence is given of a basophilic and an acidophilic substance, produced in the β-cells on the one hand and in the A- and B-cells on the other hand. The sinus gland, corresponding to the moult cycle, also exhibits a secretion cycle. For the thickened axon-endings, forming the sinus gland, a distinct ramification within the glandular lumen could be proved for the first time. The Y-Organ, situated in the maxillary ganglion, shows a secretory cycle corresponding with the two-phase moult cycle. The dorsal nerve of the maxillulary ganglion, supplying the Y-organ, together with the dorsal nerve of the maxillary ganglion forms a nerve-ramification over this organ, which may be designated a neurohaemal organ. For the first time the ganglion ventriculi, as a part of the stomato-gastric nervous system, is described as a neurohaemal organ., In the whole central nervous system of Porcellio scaber Latr. and Oniscus asellus L. four neurosecretory cell types and their secretion activity are described in relation to the moult cycle. A transference of secretory material between the β-cells of the protocerebrum and the sinus gland was proved and the absence of an X-organ was established. As far as the sinus gland is concerned, evidence is given of a basophilic and an acidophilic substance, produced in the β-cells on the one hand and in the A- and B-cells on the other hand. The sinus gland, corresponding to the moult cycle, also exhibits a secretion cycle. For the thickened axon-endings, forming the sinus gland, a distinct ramification within the glandular lumen could be proved for the first time. The Y-Organ, situated in the maxillary ganglion, shows a secretory cycle corresponding with the two-phase moult cycle. The dorsal nerve of the maxillulary ganglion, supplying the Y-organ, together with the dorsal nerve of the maxillary ganglion forms a nerve-ramification over this organ, which may be designated a neurohaemal organ. For the first time the ganglion ventriculi, as a part of the stomato-gastric nervous system, is described as a neurohaemal organ.]

Affiliations: 1: Zoologisches Institut, Greifswald, Deutschland

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/content/journals/10.1163/156854066x00144
1966-01-01
2016-12-07

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