[The larval ecdysial glands of Tenebrio molitor L. (Tenebrionidae, Coleoptera) and their changes within a moulting cycle].

@article{Romer1971TheLE,
  title={[The larval ecdysial glands of Tenebrio molitor L. (Tenebrionidae, Coleoptera) and their changes within a moulting cycle].},
  author={Franz Romer},
  journal={Zeitschrift fur Zellforschung und mikroskopische Anatomie},
  year={1971},
  volume={122 4},
  pages={
          425-55
        }
}
  • F. Romer
  • Published 1971
  • Biology, Medicine
  • Zeitschrift fur Zellforschung und mikroskopische Anatomie
1. Die Ecdysialdrusen der Larve vonTenebrio liegen in 2 Bandern entlang der dorsalen Tracheenaste und deren Verzweigungen im Prothorax. 2. Mit histochemischen Methoden konnten in den Drusenzellen Glykogen, Cholesterin und Lipidtropfchen nachgewiesen werden. Versuche mit tritiummarkiertem Cholesterin zeigten, das dieses mit den Lipidtropfchen in die Zellen der Prothorakaldrusen gelangt. 3. Mit Hilfe der Methylenblaufarbung wurde eine Innervation der Prothorakaldrusen… 
Veränderungen der Oenozyten und ihre Funktion während der Metamorphose bei Schwärmern und Zahnspinnern
SummaryOenocytes of the last larval instar and the pupa ofCerura vinula andSpinx ligustri have been examined, and their structure described. The activity phases of the oenocytes at the time of both
Topographie und ultrastruktur der endokrinen kopfdrüsen (Glandulae capitis) von Scutigera coleoptrata L. (Chilopoda, Notostigmophora)
  • J. Rosenberg
  • Biology
    Zeitschrift für Morphologie der Tiere
  • 2004
Summarry1.The paired endocrine gland of Scutigera coleoptrata is located in the head laterally behind the brain. It is attached to a small haemolymph vessel above the foregut and between muscles and
Structure and function of prothoracic glands and oenocytes in embryos and last larval instars of Oncopeltus fasciatus Dallas (Insecta, Heteroptera)
TLDR
The fine structure of embryonic oenocytes corresponds after blastokinesis with that of active larval and adult cells, and Oenocytes are proposed as the source of ecdysone during late embryonic development.
Structure and function of the prothoracic gland in honey bee (Apis mellifera L.) development
TLDR
Developmental profiles for hormone production in prothoracic glands of queen and worker larvae showed a high correlation to caste-specific differences in hemo...
An ultrastructural analysis of the ecdysoneless ((l(3)ecd1ts) ring gland during the third larval instar of Drosophila melanogaster
TLDR
In the late third larval instar of Drosophila melanogaster, the prothoracic gland, an endocrine portion of the ring gland, synthesizes ecdysteroids at an accelerated rate and the direct involvement of the ecd gene product in Ecdysteroid synthesis is indicated and a role for the gene in the proper transport of precursors to the site where they can be utilized in ecdySTERoid biosynthesis is suggested.
[Changes of oenocytes and their function during metamorphosis of sphingidae and notodontidae].
TLDR
Physiological experiments demonstrated that oenocytes as well as prothoracic glands, when active, secrete the moulting and metamorphosis hormone and both glands initiate the process of colour change.
Elektronenmikroskopische und experimentelle Untersuchungen über die Kragendrüse von Polyxenus lagurus (L.) (Diplopoda, Penicillata)
TLDR
In animals in experimentally-induced molting, the gland cells are activated: the numbers of mitochondria, Golgi complexes, lysosome-like structures and free ribosomes are increased and the endoplasmic reticulum is conspicuous; it is tubular, often swollen, and filled with floccular material.
Crystalloid structures within giant mitochondria of the prothoracic glands of Spodoptera littoralis (Bois) (Lepidoptera)
TLDR
The fine structure of the prothoracic glands of Spodoptera littoralis was investigated during the first half of the last larval instar to show honeycomb and parallel membranes increase in number as the size of the macromitochondria increases.
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References

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Prothoracic Glands in Tenebrio molitor L. (Coleoptera: Tenebrionidae)
TLDR
Closer examination of these relatively conspicuous structures in mature larvæ of T. molitor has shown that each is continued anteriorly into a separate duct; the two ducts open separately, one on each side of the hypopharynx.
Über die Isolierung eines Metamorphose-Hormons der Insekten in kristallisierter Form
Aus Seidenspinner-Puppen wurde durch Methanolextraktion und Anreicherung in Bezug auf das im Test am abgeschnürten Abdomen von Calliphora-Larven wirksame Prinzip ein kristallisierter einheitlicher
[A study of the structure and activity of the endocrine organs in Cerura vinula L. (Lepidoptera) during the pupation].
  • Christina Hintze
  • Biology
    Wilhelm Roux' Archiv fur Entwicklungsmechanik der Organismen
  • 1968
TLDR
The neurosecretory cells of the brain, the prothoracic gland, and the corpora allata of Cerura vinula L. undergo phases of secretory activity in every larval instar, with the assumption that all of the processes involved in pupation are brought about by the prohormone ecdysone.
MODIFICATIONS ULTRASTRUCTURALES DES CELLULES SÉCRÉTRICES DE LA GLANDE PROTHORACIQUE DE VERS À SOIE AU COURS DES DEUX DERNIERS ÂGES LARVAIRES
TLDR
The correlation revealed between mitochondrial transformations and the cyclical release of ecdysone leads to the conclusion that a prominent fraction of chondriosomes is involved, in relation to the agranular reticulum, in the elaboration of steroid hormones such as ecDysone.
Physiology of insect diapause interaction between the pupal brain and prothoracic glands in the metamorphosis of the giant silkworm, Platysamia cecropia.
TLDR
The mechanism that initiates adult development after pupal diapause has been studied in a total of 282 experiments, supplementary to those reported previously, and the effectiveness of the "prothoracic glands" revealed.
The Prothoracic Glands of some Coleopteran Larvae
TLDR
The paired prothoracic glands of the larvae of 15 species of Coleoptera have been described and no relationship seems to exist between the morphological and histological nature of the gland and the taxonomic position of the insect, but there seems to be a direct relation between the volume of the whole gland and its total nuclear volume.
DYNAMICS OF ECDYSONE SECRETION AND ACTION IN THE FLESHFLY SARCOPHAGA PEREGRINA.
TLDR
The role of the blood is to serve, not as a reservoir, but as a pipeline through which ecdysone flows from the ring-gland to its sites of action and swift inactivation, which can account for its low titer in both the blood and tissues.
Control of moulting in an insect.
TLDR
The experiments reported here show that the head and thorax of Calpodes larvae isolated with intact activated prothoracic glands do not moult; they can only do so if moulting hormone is injected or if at least part of the abdomen is present.
PHYSIOLOGY OF INSECT DIAPAUSE. IV. THE BRAIN AND PROTHORACIC GLANDS AS AN ENDOCRINE SYSTEM IN THE CECROPIA SILKWORM
TLDR
The pupal diapause is a state of endocrine deficiency resulting from a temporary failure of the brain in secreting its tropic hormone following pupation, and the pupal tissues require is the prothoracic glands' growth and differentiation hormone.
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