Role of male accessory glands in spermatodesm reorganization in Orthoptera Tettigonioidea

2001 ◽  
Vol 33 (1) ◽  
pp. 33-39 ◽  
Author(s):  
R. Viscuso ◽  
L. Narcisi ◽  
L. Sottile ◽  
M. Violetta Brundo
Autoimmunity ◽  
1991 ◽  
Vol 9 (3) ◽  
pp. 193-200
Author(s):  
Maria Elena Ferro ◽  
Marta Romero-Piffiguer ◽  
Virginia Rivero ◽  
Nora Yranzo-Volonte ◽  
Silvia Correa ◽  
...  

1959 ◽  
Vol 100 (3) ◽  
pp. 540-543 ◽  
Author(s):  
S. C. Lyster ◽  
G. H. Lund ◽  
W. E. Dulin ◽  
R. O. Stafford

2001 ◽  
Vol 267 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Pedro P. López ◽  
Juán F. Santarén ◽  
M.Fernanda Ruiz ◽  
Pedro Esponda ◽  
Lucas Sánchez

1953 ◽  
Vol 43 (3) ◽  
pp. 343-347 ◽  
Author(s):  
T. Mann ◽  
A. Walton

1. A study was made of the effect of underfeeding on the genital functions in the bull. Regular weekly collections of semen were made during (1) a 5-week pre-experimental period of normal feeding, (2) a 23-week experimental period of under-feeding, and (3) a 25-week post-experimental period of recovery.2. Although the food intake was reduced to such an extent that the bull began to lose weight at a rate of 6·5 kg. (1 stone) per week, the volume and density of semen and the motility and morphology of the spermatozoa were not significantly changed.3. In contrast to the testes, the secretory function of the male accessory glands was markedly affected by under-feeding. The concentration of fructose and citric acid in semen decreased to about 30 and 60% respectively of the original levels. During the recovery period the values for fructose and citric acid gradually returned to normal.


1965 ◽  
Vol 42 (3) ◽  
pp. 373-378
Author(s):  
K. G. DAVEY

1. Mated females of Rhodnius prolixus lay eggs at approximately twice the rate of unmated females. 2. Males which have had their seminal vesicles or opaque accessory glands removed produce spermatophores at mating, but no spermatozoa appear in the spermathecae of the females. The females involved in such matings do not exhibit an increase in egg-production. 3. When females lacking their spermathecae are mated to normal males, the increase in egg production which follows normal matings does not materialize. 4. Implanting spermathecae from mated females into virgin females increases the egg-production of the host. Implanting spermathecae from virgin females or seminal vesicles or transparent accessory glands from males has no effect on the egg-production of the donor. 5. It is tentatively concluded that a blood-borne factor from the spermathecae containing spermatozoa is the primary stimulus to increased egg production in a mated female.


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