Biochemical and Physiological Studies of Certain Ticks (Ixodoidea). Cycle of Nitrogenous Excretion in Argas (Persicargas) Arboreus Kaiser, Hoogstraal & Kohls (Argasidae)1
- 31 January 1973
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Medical Entomology
- Vol. 10 (1) , 53-57
- https://doi.org/10.1093/jmedent/10.1.53
Abstract
Guanine is the major excretory product of the 3rd-instar nymph and adult of Argas (Persicargas) arboreus. It comprises 59.2–97.3% of excreta weight and 70.0–100.0% of the nitrogen excreted. Hematin constitutes 1.2–8.6% of excreta weight and 0.23–1.45% of the nitrogen excreted. No excreted proteins or amino acids were detected. Not all ingested nitrogen and hematin is excreted during active digestion. Excretion occurs in a definite cycle with maximum quantity produced 3 or 4 days after feeding. In the nymph, excretion stops almost completely 4 or 5 days before molting to the adult, and resumes thereafter. The excretory rhythm does not change seasonally but quantities vary in different seasons.Keywords
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