Ultrastructure des organes retrocerebraux de Lasius niger l. (Hymenoptera : Formicidae)

  title={Ultrastructure des organes retrocerebraux de Lasius niger l. (Hymenoptera : Formicidae)},
  author={M. Lafon-Cazal and H. Verron},
  journal={International Journal of Insect Morphology \& Embryology},
Abstract The ultrastructure of the retrocerebral system has been studied in hyperactive workers of the ant, Lasius niger. The paired elongated corpora cardiaca consist of 2 parts: the glandular part that lies in a dorsolateral position, and the more developed nervous part. In the neural area, 4 types of neurosecretory axons can be distinguished according to the size and density of their granules. The glandular cells contain numerous dense granules and large dense bodies whose nature is… Expand
4 Citations
The stomatogastric nervous system of the honey bee (Apis mellifera) in a critical phase of caste development
Three new nerves that connect the stomatogastric nervous system of honey bee larvae and pupae to the central nervous system and the foregut are observed, representing the initial step in caste differentiation. Expand
Neuropeptidomics of the carpenter ant Camponotus floridanus.
This work combines different mass spectrometric methods to characterize the neuropeptidome of the adult carpenter ant Camponotus floridanus and provides basic information about the identity and localization of neuropePTides that is required to anatomically and functionally address the role and significance of Neuropeptides in ant behavior and physiology. Expand
Locomotor behavior in relation to octopamine levels in the antLasius niger
The heads and bodies of hyperactive and hypoactive ants, selected on the basis of motor activity, were tested for their octopamine content. The level was found to be significantly higher inExpand


Ultrastructural Analysis of the Neuroendocrine Apparatus of Oncopeltus fasciatus (Heteroptera)
In this heteropteran insect, the two principal functions of the corpus cardiacum appear to be spatially separated: the neurohemal function is subserved by the aortic wall, which permits release of material into both theAortic lumen and the hemocoel, and the intrinsic endocrine function is possessed by the parenchymal cells. Expand
Ultrastructure of retrocerebral complex of the earwig, Euborellia annulipes, and rôle of aorta as a neurohaemal organ
E M studies have confirmed the role of the aorta as a neurohaemal organ for the medial neuro secretory cells, and the corpora cardiaca for the lateral neurosecretory cells of the brain. Expand
[Identification of neurosecretory reservoirs in the mayfly Ephemera danica Müll. (ephemeroptera: ephemeridae) (author's transl)].
  • H. Kaiser
  • Chemistry, Medicine
  • European journal of cell biology
  • 1979
In the region where the nervus corporis cardiaci 1 is leaving the brain, the diameter of this nerve increases considerably, and different types of axons were observed, filled with great amounts of electron opaque secretory granules. Expand
Neurosecretory system of the earwig Labedura riparia, and the rôle of the aorta as a neurohaemal organ
The neurosecretory system of L. riparia has been described from sections and whole mounts using a variety of techniques and it appears that the neuro secretory material elaborated in the MNC is stored in the cephalic aorta and in the corpora cardiaca, which are two oval or elongate bodies composed of large chromophobe and small chromophil cells. Expand
The neurosecretory system in the aphid Megoura viciae, with reference to unusual features associated with long distance transport of neurosecretion.
  • C. Steel
  • Biology, Medicine
  • General and comparative endocrinology
  • 1977
Abstract Cytological evidence of neurosecretory activity in the ganglia of the central and stomatogastric nervous systems of the aphid, Megoura viciae , has been investigated with a view to analysisExpand
An electron microscope study of the corpora cardiaca and secretory neurons in the aphid, Myzus persicae (Sulz.)
The corpora cardiaca (CC) and associated nerves of the aphid, Myzus persicae , have been examined with the electron microscope and their ultrastructure described. The CC is composed of intrinsicExpand
The ultrastructure of the corpus cardiacum of Aedes sollicitans and the histology of the cerebral neurosecretory system of mosquitoes.
Five different types of neurosecretory axons were noted in the corpus cardiacum based upon relative size and density of the granules anddensity of the axoplasm, and the name X-cells has been retained until the function of these cells can be determined. Expand
Ultrastructural studies on the corpora cardiaca‐allata complex of the adult alfalfa weevil, Hypera postica
The organization of the corpora cardiaca and corpora allata of the female alfalfa weevil, Hypera postica, generally parallels that reported for other insects with extrinsic neurosecretory axons,Expand
Observations on the secretory processes in the corpus cardiacum of the stick insect, Carausius morosus.
It is stressed that, in this functionally versatile organ, the electron microscope may reveal the mechanism of release of active neurohumoral materials, but is at present unable to differentiate between the rich variety of these pharmacologically active products which affect numerous target organs throughout the body. Expand
The Corpora Allata of Insects
This chapter discusses the corpora allata of insects, endocrine glands which were previously called “paired posterior visceral ganglia” or “corpora incertae,” owing to their being confused with the sympathetic cerebral structures constituting the stomatogastric system. Expand