Effects of isolation and transplantation of the corpus cardiacum on hormone release from its glandular cells after flight in Locusta migratoria

1977 ◽  
Vol 184 (2) ◽  
Author(s):  
L.H.P.M. Rademakers
Keyword(s):  
Locusta Migratoria ◽  
Hormone Release ◽  
Corpus Cardiacum ◽  
Glandular Cells

ULTRASTRUCTURAL STUDIES ON FORMAMIDINE-INDUCED RELEASE OF NEUROSECRETION IN LOCUSTA MIGRATORIA (ORTHOPTERA: LOCUSTIDAE)

1983 ◽  
Vol 115 (9) ◽  
pp. 1147-1153 ◽  
Author(s):  
Gur Jai Pal Singh ◽  
John F. Barker
Keyword(s):  
Plasma Membrane ◽  
Locusta Migratoria ◽  
Glandular Cell ◽  
Neurosecretory Material ◽  
Hormone Release ◽  
Corpus Cardiacum ◽  
Ultrastructural Studies ◽  
Glandular Cells

AbstractThe action of a formamidine pesticide on the ultrastructure of hormone release from the glandular lobe of the corpus cardiacum (CC) of the locust, Locusta migratoria (L.), has been studied. Treatment of the isolated CC with 5 μM desmethylchlordimeform (DCDM) caused depletion of neurosecretory material from the intrinsic cells of the glandular lobe without affecting the nervus corpus cardiacum II axons. Pretreatment of isolated CC with the α-aminergic antagonist (5 μM) phentolamine blocked DCDM-induced release of neurosecretory material from the glandular cells. DCDM-induced release of neurosecretion from the glandular cell axons occurred via exocytosis. DCDM treatment also affected the distribution of mitochondria. Mitochondria from adjacent cells lined up along the plasma membrane, forming pairs in juxtaposition.

The Control of Changes in Peripheral Sensilla Associated with Feeding in Locusta Migratoria (L.)

1972 ◽  
Vol 57 (3) ◽  
pp. 755-763
Author(s):  
E. A. BERNAYS ◽  
R. F. CHAPMAN
Keyword(s):  
Normal Level ◽  
Electrical Resistance ◽  
Locusta Migratoria ◽  
Corpus Cardiacum ◽  
Corpora Cardiaca ◽  
Diuretic Hormone ◽  
Stretch Receptors ◽  
The Brain ◽  
Maxillary Palps ◽  
Stimulation Of

1. The electrical resistance across the tips of the maxillary palps is not affected by stimulation of the palps, but increases to the normal level found after feeding as a result of distension of the foregut with agar or injection of corpus cardiacum homogenates into the haemolymph. 2. No increase in resistance occurs if the posterior pharyngeal nerves or the frontal connectives are cut. 3. It is inferred that distension of the foregut stimulates stretch receptors which, acting via the posterior pharyngeal nerves, the frontal connectives and the brain, cause the release of hormone from the storage lobes of the corpora cardiaca. This hormone acts on the terminal sensilla of the palps, causing them to close and so increasing the resistance across the palps. 4. Release of the diuretic hormone is controlled via the same pathway.

Peptide profiling of a single Locusta migratoria corpus cardiacum by nano-LC tandem mass spectrometry

Peptides ◽  
2003 ◽  
Vol 24 (10) ◽  
pp. 1475-1485 ◽  
Author(s):  
G. Baggerman ◽  
E. Clynen ◽  
J. Huybrechts ◽  
P. Verleyen ◽  
S. Clerens ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Locusta Migratoria ◽  
Tandem Mass ◽  
Corpus Cardiacum
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