The Reproductive System of Some Florida Mosquitoes. II. The Male Accessory Glands and Their Role1

The grasshoppers of the subfamily Morabinae (Orthoptera: Eumastacidae) differ substantially from the better-known Acrididae in their internal anatomy. Two additional sets of diverticula are present on the gut. One set, of taxonomic interest in that some species have 12 diverticula whereas others have 18, issues from the midgut. Another set of six diverticula issues from the ileum and is brightly coloured according to the nature of the food in the gut. The gastric caeca, which in Acrididae have posterior and anterior segments, lack the posterior segment in morabines. The proventriculus differs in structure from the acridid type, having a cardiac valve of two flaps without V-shaped sclerotizations. The pyloric sphincter, however, has 12 V-shaped sclerotizations which are absent in acridids. The male accessory glands are long and generally unconvoluted. They can be classified according to appearance and function into eight distinct types. The female spermatheca is uniformly shaped throughout the Morabinae studied, but is relatively large compared with the spermatheca of acridids, and in morabines is larger than the few known spermathecae of other Eumastacidae. The number of ovarioles in each ovary is small (2-10, according to the species), and the tracheation of the internal reproductive system in both sexes differs considerably from the arrangement found in Acrididae.

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On some ultrastructural features of the reproductive system of the monogenean parasite Macrogyrodactylus congolensis from Clarias gariepinus inhabiting the River Nile in Egypt

Acta Parasitologica ◽

10.2478/s11686-014-0236-0 ◽

2014 ◽

Vol 59 (2) ◽

Cited By ~ 2

Author(s):

Safaa Arafa ◽

Mohammed El-Naggar ◽

Graham Kearn

Keyword(s):

Reproductive System ◽

Clarias Gariepinus ◽

Circular Muscle ◽

Egg Cell ◽

Muscle Fibres ◽

Male Accessory Glands ◽

Accessory Glands ◽

Large Oocyte ◽

Mature Spermatozoa ◽

Macrogyrodactylus Congolensis

AbstractSome organs of the reproductive system of the protogynous monogenean skin parasite Macrogyrodactylus congolensis (Prudhoe, 1957) Yamaguti, 1963 have been studied using transmission electron microscopy. The vesicula seminalis is enclosed by a prominent layer of circular muscle fibres and has inner syncytial protrusions. The penis bulb is a highly muscular organ with prominent radial and circular muscle fibres, a gutter-shaped large spine and 16 small spines. Two syncytial male accessory glands, and a single reservoir for male accessory secretion were identified. The secretory bodies in the male accessory glands and male accessory reservoir have a unique structure. A large oocyte is situated in a chamber, previously referred to as the “ootype” or “egg-cell-forming region” (ECFR), which also contains one or two small undifferentiated cells and vacuolated tissue. Mature spermatozoa were abundant in the receptaculum seminis and dispersed in the vacuolated tissue in the ECFR and appeared to be attached to the membrane of the large oocyte. Mature spermatozoa were also seen in the parenchymal tissue near the chamber containing embryos and even in the tissues of the embryo.

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Ability of Some Progestational Steroids to Stimulate Male Accessory Glands of Reproduction in the Rat

Experimental Biology and Medicine ◽

10.3181/00379727-100-24690 ◽

1959 ◽

Vol 100 (3) ◽

pp. 540-543 ◽

Cited By ~ 11

Author(s):

S. C. Lyster ◽

G. H. Lund ◽

W. E. Dulin ◽

R. O. Stafford

Keyword(s):

Male Accessory Glands ◽

Accessory Glands

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The Drosophila melanogaster X-Linked mfs(1)6E Locus Is Required for Production of Normal Seminal Fluid by the Male Accessory Glands

Experimental Cell Research ◽

10.1006/excr.2001.5246 ◽

2001 ◽

Vol 267 (1) ◽

pp. 1-12 ◽

Cited By ~ 2

Author(s):

Pedro P. López ◽

Juán F. Santarén ◽

M.Fernanda Ruiz ◽

Pedro Esponda ◽

Lucas Sánchez

Keyword(s):

Drosophila Melanogaster ◽

Seminal Fluid ◽

Male Accessory Glands ◽

Accessory Glands

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The effect of under-feeding on the genital functions of a bull

The Journal of Agricultural Science ◽

10.1017/s0021859600057531 ◽

1953 ◽

Vol 43 (3) ◽

pp. 343-347 ◽

Cited By ~ 24

Author(s):

T. Mann ◽

A. Walton

Keyword(s):

Citric Acid ◽

Food Intake ◽

Recovery Period ◽

Experimental Period ◽

Secretory Function ◽

Male Accessory Glands ◽

Accessory Glands ◽

Normal Feeding

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.

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