Original paper
Feinstruktur und Funktion der Analpapillen aquatischer Schwebfliegenlarven (Diptera: Syrphidae)
[Fine Structure and Function of the Anal Papillae of Aquatic Hovering-Fly Larvae (Diptera: Syrphidae)]
Wichard, Wolfgang; Komnick, Hans
Entomologica Germanica Band 1 Heft 1 (1974), p. 1 - 10
28 references
published: Nov 29, 1974
DOI: 10.1127/entom.germ/1/1974/1
ArtNo. ESP346000101000, Price: 29.00 €
Abstract
The aquatic larvae of the hovering fly Eristalinus sepulcralis Linné 1758 (Diptera: Syrphidae) have 12 anal papillae. Their epithelium is fine-structurally characterized by dense infoldings of the apical plasma membrane which is studded with particles, by deep infoldings of the basal plasma membrane and by a high content of mitochondria, which possess densely packed cristae and occupy nearly 50% of the cytoplasmic volume. Detectable amounts of chloride ions are histochemically localized in the epicuticule and the zone of apical plasma membrane infoldings. These fine-structural and histochemical results suggest in agreement with Kroghs (1943) interpretation that the anal papillae are the site of osmoregulatory salt absorption.