Vital staining of the stick insect digestive system identifies appendices of the midgut as novel system of excretion

  title={Vital staining of the stick insect digestive system identifies appendices of the midgut as novel system of excretion},
  author={Matan Shelomi and Lynn Siri Kimsey},
  journal={Journal of Morphology},
The stick insects or phasmids (Phamsatodea) have a series of pyriform ampulles with long, thin filaments on the posterior end of their midgut referred to as the “appendices of the midgut.” Found only in phasmids, their function had never been determined until now. Their similarity to the Malpighian tubules, which are ubiquitous insect organs of excretion, suggested a similar function. To differentiate between the appendices and the Malpighian tubules and compare functional differences between… 
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    Annals of Colorectal Research
  • 2019
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Review of the Gross Anatomy and Microbiology of the Phasmatodea Digestive Tract
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The regulatory powers of the excretory system have been tested by injecting NaCl and KCl into the haemolymph and are shown to be relatively feeble.
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The Embioptera are rather generalized insects whose internal anatomy is simple and not subject to great modifications. For this reason these insects form an ideal group for elementary anatomical and
Active Transport of Water by the Malpighian Tubules of the Stick Insect, Dixippus Morosus (Orthoptera, Phasmidae)
Single Malpighian tubules of the stick insect have been studied as preparations isolated in drops of haemolymph under liquid paraffin and it is concluded that water must be actively transported across the wall of the tubule.
Excretory role of the midgut in larvae of the tobacco hornworm, Manduca sexta (L.).
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  • Medicine
    The Journal of experimental biology
  • 1975
Evidence is presented that hippuric acid competes with acid dyes for excretion by both midgut and Malpighian tubules and after the final-instar larva purges its gut the ability to excrete dyes gradually decreases.
Ultrastructural Changes in the Midgut Epithelium of Acheta domesticus (Orthoptera: Gryllidae) During Degeneration and Regeneration
Differences at the ultrastructural level between digestive and regenerative cells of the anterior and posterior midgut are described, and regeneration in this species proceeds in a continuous manner.
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In adult beetles, midgut epithelial cells are continually replaced by cells recruited from populations of mitotic regenerative cells that are interspersed among the differentiated epithelial monolayer, and some of these proliferating populations have adopted evaginated configurations of cells that extend for varying distances from the basal surface of the monolayers.
Midgut pseudotumors and the maintenance of tissue homeostasis: Studies on aging and manipulated stick insects
It is concluded that the stomatogastric nervous system plays a decisive role in the regulatory mechanism maintaining midgut tissue homoeostasis and provides a valuable tool for the exploration of extrinsic factors involved into the feedback circuitry of tissue homeostasis.
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Microbial symbioses in the midgut of insects
Micro-organisms are ubiquitous, and the guts of animals are particularly favoured sites for microbial colonization. Gut symbionts are those micro-organisms which persist for extended periods in the