Malpighian Tubules


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Malpighian Tubules

 

excretory organs in the majority of arachnids, myriopods, and insects; they are blind tubular appendages of the intestine, on the boundary between the mesenteron (midgut) and proctodeum (hindgut). In arachnids and myriopods there is one pair of Malpighian tubules, in orthopterous insects up to 120 pairs, and in hymenopterous insects up to 150 pairs. In the wall of the Malpighian tubules there is a muscle layer which enables them to contract. In arachnids the Malpighian tubules excrete primarily guanine; in insects and myriopods, uric acid. In aquatic insects the Malpighian tubules perform an osmoregulatory function.

References in periodicals archive ?
exigua larvae, Tre2 was found highly expressed in the midgut, Malpighian tubules and fat body, but much less so in the brain, cuticle, trachea and testes (Tang et al.
After several attempts, I did not see any staining in the midgut, Malpighian tubules and fat body where Cyp6g1 is expressed.
The passage of the midgut to the hindgut is characterized by the insertion of Malpighian tubules.
popilliae infections were diagnosed by removing a small portion of Malpighian tubule from each beetle and examining them microscopically for sporophorous vesicles (Andreadis & Hanula 1987).