Histology of the neurosecretory system and the retrocerebral endocrine glands of the adult migratory grasshopper, <i>Melanoplus sanguinipes</i> (Fab.) (Orthoptera: Acrididae)

Dogra, C. S.; Ewen, Al B.

doi:10.1002/jmor.1051300405

Cited by 17 publications

(3 citation statements)

References 33 publications

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“…In fact, the overall mean of radioactivity per unit area is somewhat higher in the experimental animals as compared to the controls. These results support the suggestion that the CA in this insect are not stimulated by cerebral neurosecretion transported to the CA via the CC (Dogra and Ewen 1970b). Neither is the volume of the CA affected by removal of the FG in Melanoplus; the differences between the volumes of the CA in normal and experimental insects were not significant.…”

Section: Discussionsupporting

confidence: 85%

AN AUTORADIOGRAPHIC STUDY OF ENDOCRINE ACTIVITY FOLLOWING FRONTAL GANGLIONECTOMY IN VIRGIN FEMALES OFMELANOPLUS SANGUINIPES(ORTHOPTERA: ACRIDIDAE)

1970

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Can. Ent. 102: 1083-1088 (1970) The synthetic ability of type-A neurosecretory cells (NSC) and corpus allatum (CA) was investigated autoradiographically in both normal virgin females and those from which the frontal ganglion had been removed. Incorporation of 3H-cystine and 'H-uridine into the hTSC was significantly lower in frontal ganglionectomized insects than in controls. There appeared to be no relationship between the level of isotope uptake and the amount of stainable material in the NSC. Ability of the CA to incorporate 3H-uridine seemed unaffected by the operation.

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Section: Discussionsupporting

confidence: 85%

AN AUTORADIOGRAPHIC STUDY OF ENDOCRINE ACTIVITY FOLLOWING FRONTAL GANGLIONECTOMY IN VIRGIN FEMALES OFMELANOPLUS SANGUINIPES(ORTHOPTERA: ACRIDIDAE)

1970

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“…These products might be released into the general circulation or more directly to adjacent target tissues. Neurosecretory axons in oesophageal nerves have been reported also in A. aegypti (Burgess and Rempel1966), Calliphora (Thomsen 1954), Locusta (Strong 1966), and Melanoplus (Dogra and Ewen 1970). No information was obtained in this study on the possible function of the neurosecretory pathways through the oesophageal nerves.…”

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confidence: 83%

“…Laboratory-reared C. inornata that originated from the prairie and parkland of western Canada were used in this and Tandan (1964) to reveal neurosecretory cell bodies and axons. Extremely dilute aldehyde-fuchsin staining solutions were used because the 0.5% solution (Cameron and Steele 1959) gave too much background staining.…”

Section: Methodsmentioning

confidence: 99%

Neurosecretory cells and their axon pathways in Culiseta inornata (Williston) (Diptera: Culicidae)

Burgess¹

1971

Can. J. Zool.

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B m o~s s , L. 1971. Neurosecretory cells and their axon pathways in Culiseta inornata (Williston) (Diptera: Culicidae). Can. J. Zool. 49: 889-901. Paired medial, intermediate, and anterior groups of neurosecretory cells are present in the protocerebrum of Culiseta inornata (Williston). The medial and intermediate cells seem to persist through larval, pupal, and adult stages; the anterior cells become inconspicuous about the time of adult emergence.Axons of the intermediate neurosecretory cells could not be traced for an appreciable distance, but axons of the medial cells could be traced to a neurohaemal organ on the aorta, and they appear to constitute the NCC I. Branches of the anterior-cell axons seem to constitute the NCC 11, and other branches of these axons in fourth-instar larvae and young pupae can be traced into the ventral nerve chain. From the neurohaemal organ some neurosecretory axons pass into the oesophageal nerves, and the expanded posterior portion of each oesophageal nerve in adults may be a storage and release organ of neurosecretory material. A neurosecretory pathway can be traced from the neurohaemal organ to the corpora allata in adults; it is probably present also in larvae. Conspicuous neurosecretory axons of uncertain origin, which are distinct from the anterior-cell axons, can be traced from the protocerebrup fhrough the circumoesophageal connectives and along the whole length of the ventral nerve cham m fourth-lnstar larvae; these axons are present, probably in a similar form, also in younger larvae, in pupae, and in newly emerged adults.

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Metamorphosis of the cerebral neuroendocrine system in the moth Manduca sexta

Copenhaver

Truman

1986

J of Comparative Neurology

116

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We have examined the morphology and neuronal elements of the cerebral neuroendocrine system in the larval, pupal, and adult stages of the moth Manduca sexta with a variety of neuroanatomical techniques. The larval brain contains several discrete groups of neurosecretory and non-neurosecretory cells that project to the associated neurohemal organs (the corpora cardiaca-allata complex, or CC-CA) and to a variety of more peripheral structures. A previously undescribed set of cells in the subesophageal ganglion have also been found that project out the neurosecretory nerves. During metamorphosis, the cerebral neuroendocrine system undergoes a dramatic structural reorganization, including the reduction or loss of many larval nerves and a repositioning of the cell groups and their dendritic fields. Despite these changes, most of its central elements are retained. In addition, by the completion of adult development a new cluster of cells can be found on either side of the dorsal midline of the brain. We have also determined the relative contributions of the different cell groups to the moth neuroendocrine system by intracellular iontophoresis of dye into individual cells. Within the dorsal protocerebrum, five separate morphological types of cells can be recognized, each with a distinctive pattern of dendritic arborization in the brain and terminal neurohemal processes that project to the CC, the CA, the aorta, or to a combination of these regions. The large intrinsic cells of the CC have also been filled, revealing an unusual set of morphological features in these peripheral neurosecretory cells.

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Histology of the neurosecretory system and the retrocerebral endocrine glands of the adult migratory grasshopper, Melanoplus sanguinipes (Fab.) (Orthoptera: Acrididae)

Cited by 17 publications

References 33 publications

AN AUTORADIOGRAPHIC STUDY OF ENDOCRINE ACTIVITY FOLLOWING FRONTAL GANGLIONECTOMY IN VIRGIN FEMALES OFMELANOPLUS SANGUINIPES(ORTHOPTERA: ACRIDIDAE)

AN AUTORADIOGRAPHIC STUDY OF ENDOCRINE ACTIVITY FOLLOWING FRONTAL GANGLIONECTOMY IN VIRGIN FEMALES OFMELANOPLUS SANGUINIPES(ORTHOPTERA: ACRIDIDAE)

Neurosecretory cells and their axon pathways in Culiseta inornata (Williston) (Diptera: Culicidae)

Metamorphosis of the cerebral neuroendocrine system in the moth Manduca sexta

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