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 ?
The development of the Malpighian tubules of Carausius morosus (Orthoptera).
However, the increase in frequency of heterochromatin decondensation in Malpighian tubules of the infected specimens subjected to heat shock may be in agreement with this hypothesis.
With regard to the analysis of the nuclear phenotypes in the Malpighian tubules of infected P.
After several attempts, I did not see any staining in the midgut, Malpighian tubules and fat body where Cyp6g1 is expressed.
The genital arch area and malpighian tubules area data showed significant deviations from normality (W = 0.
Wing length, tibia length, the area of the posterior lobe of the genital arch, testes length and area, and malpighian tubules length and area were analyzed.
Trehalase2 activity found in the midgut, Malpighian tubules and fat body was 0.
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.
1995); in distal duct cells of the cockroach salivary glands (Just and Walz, 1994); in the midgut, Malpighian tubules, and silk glands of lepidopterans (Schweikel et al.
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).