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Die Geißelorgane des Geißelskorpions Mastigoproctus giganteus (Lucas) (Arachnida: Uropygi): Transportepithel

The whip organs of the whip scorpion mastigoproctus giganteus (Lucas): Transporting-epithelia

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Summary

The whip organs are situated proximally on the ventral side of most segments of the whip scorpion's whip. As the cuticular layer covering these organs is much thinner than the usual cuticle, the whip organs may be recognized easily under the light microscope as oval regions. The study of the ultrastructure reveals an epithelium characterized by apical and basal invaginations of the cell membrane with numerous mitochondria and prominent whorls of smooth endoplasmic reticulum. Thus, the whip organs possess the characteristics required for transepithelial transport processes. The possible function is discussed, based on experimental study.

Zusammenfassung

Die Geißelorgane (Kaudalorgane) liegen jeweils proximal an der Ventralseite der meisten Geißelglieder. Da die Cuticula über diesen Organen wesentlich dünner ist, sind sie bereits lichtmikroskopisch als hellere, ovale Regionen erkennbar. Die Untersuchung der Ultrastruktur zeigt ein Epithel, das durch apikale und basale Einfaltungen der Zellmembran, zahlreiche Mitochondrien und konzentrische Komplexe von glattem endoplasmatischem Reticulum gekennzeichnet ist. Diese ultrastrukturellen Merkmale sprechen für transepitheliale Transportprozesse. Die mögliche Funktion der Geißelorgane wird unter Berücksichtigung experimenteller Befunde diskutiert.

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Für die Anfertigung der Zeichnung danken wir Herrn P. Adam

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Haupt, J., Emde, W. & Weygoldt, P. Die Geißelorgane des Geißelskorpions Mastigoproctus giganteus (Lucas) (Arachnida: Uropygi): Transportepithel. Zoomorphology 96, 205–213 (1980). https://doi.org/10.1007/BF00310286

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  • DOI: https://doi.org/10.1007/BF00310286

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