The effect of corpora allata on the plasma membrane of the symbiotic bacteria of the oocyte surface of Periplaneta americana L

1974 ◽  
Vol 23 (1) ◽  
pp. 118-123 ◽  
Author(s):  
T.P. Liu
Keyword(s):  
Plasma Membrane ◽  
Periplaneta Americana ◽  
Corpora Allata ◽  
Symbiotic Bacteria

Levels of tryptophan, 5-hydroxytryptamine, and dopamine in some tissues of the cockroach Periplaneta americana

1986 ◽  
Vol 64 (12) ◽  
pp. 2669-2673 ◽  
Author(s):  
B. Duff Sloley ◽  
Roger G. H. Downer ◽  
Cedric Gillott
Keyword(s):  
Nervous Tissue ◽  
High Performance ◽  
Periplaneta Americana ◽  
Corpora Allata ◽  
Suboesophageal Ganglion ◽  
Corpora Cardiaca ◽  
Thoracic Ganglia ◽  
Frontal Ganglion ◽  
Low Levels ◽  
Immunohistochemical Studies

Tryptophan, 5-hydroxytryptamine, and dopamine were measured in the frontal ganglion, corpora cardiaca, corpora allata, nerves of the suboesophageal ganglion, nerves of the thoracic ganglia, gut, testes, and ovaries of the cockroach Periplaneta americana using high performance liquid chromatography with electrochemical detection. 5-Hydroxytryptamine was demonstrated in the frontal ganglion, corpora cardiaca, corpora allata, and nerves of the suboesophageal ganglion but not in the gut, testes, ovaries, or nerves of the thoracic ganglia. These results quantitatively confirm immunohistochemical studies of 5-hydroxytryptamine in neurohaemal and nonneuronal tissues of the cockroach. Dopamine was found in all neurohaemal and nervous tissue examined. Dopamine was also found at low levels in the rectum. Tryptophan was found in all tissues examined.

The Hormonal Control of Colleterial Gland Secretion

1966 ◽  
Vol 44 (2) ◽  
pp. 363-378
Author(s):  
J. H. WILLIS ◽  
P. C. J. BRUNET
Keyword(s):  
Periplaneta Americana ◽  
Protocatechuic Acid ◽  
Hormonal Control ◽  
Corpora Allata ◽  
Gland Secretion ◽  
Quantitative Assay ◽  
Chromogenic Substrate ◽  
Spectrophotometric Measurement ◽  
Left And Right ◽  
Colleterial Gland

1. Methods for the quantitative assay of the activities of the left and right colleterial glands of adult cockroaches (Periplaneta americana) are reported. The former involves the spectrophotometric measurement of the content of protocatechuic acid glucoside of the gland; the latter the measurement of glucosidase activity by orthodox use of a chromogenic substrate. 2. Glucoside and glucosidase have been studied in terms of accumulation and turnover. 3. The accumulation of the glucoside requires the presence of active corpora allata, but glucosidase synthesis is seemingly independent of this.

Hormonal control of spermatogenesis in the cockroach, Periplaneta americana (L.)

1970 ◽  
Vol 48 (2) ◽  
pp. 283-287 ◽  
Author(s):  
W. D. Blaine ◽  
S. E. Dixon
Keyword(s):  
Surgical Approach ◽  
Periplaneta Americana ◽  
Neurosecretory Cells ◽  
Hormonal Control ◽  
Corpora Allata ◽  
Testicular Development ◽  
Prothoracic Glands ◽  
Humoral Regulation

A surgical approach was made to the question of humoral regulation of testicular development. Neither the neurosecretory cells nor the prothoracic glands retarded or accelerated development of the testes. The corpora allata maintained the testes in a juvenile state by retarding their development.

scholarly journals Effects of Inhibitors on Juvenile Hormone III Biosynthesis in Corpora Allata of the Cockroach Periplaneta americana L., in Vitro

1984 ◽  
Vol 9 (4) ◽  
pp. 755-758 ◽  
Author(s):  
Gerald T. BROOKS ◽  
Grahame E. PRATT ◽  
Anthony P. OTTRIDGE ◽  
John A. COCKS
Keyword(s):  
Juvenile Hormone ◽  
Periplaneta Americana ◽  
Corpora Allata ◽  
Juvenile Hormone Iii
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