Sugars in Hemolymph of Ticks

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Abstract
Is glucose the only sugar in ticks? When several species of ticks were analyzed, glucose and inositol but no trehalose were found by Tatchell (1969, J. Ins. Physiol. 15: 1421–31), Řeháček & Brzostowski (1969, J. Ins. Physiol. 15: 1431–36), and Aboul-Nasr & Bassal (1971, J. Med. Ent. 8: 521–24). Because trehalose is generally present in hemolymph of arthropods, Aboul-Nasr suggested that the absence of trehalose may be a general characteristic of tick hemolymph. However, Wyss-Huber, Striebel, Weiss & Geigy (1961, Acta Trop. 18: 46–56) extracted trehalose from whole body homogenates of Ornithodoros moubata (Murray). Trehalose is present in vertebrate blood, so it seems unlikely that the trehalose was obtained from a vertebrate host. How a disaccharide such as trehalose could be present in tick tissues but be absent in the hemolymph remained an enigma. Furthermore, no trehalose was found in hemolymph by Frayha, Dajani, Almaz & Sweatman (1974, J. Med. Ent. 11: 168–72). They discovered sucrose in the coxal fluid of O. savignyi (Audouin) by using an alkaline anthrone reagent which is supposed to be selective for furanosides.

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