Morphology and Fine structure of the Accessory Glands in the Female Reproductive System of Saduria Entomon (Linnaeus, 1758) (Isopoda, Valvifera)

Crustaceana ◽  
2004 ◽  
Vol 77 (10) ◽  
pp. 1213-1222
Author(s):  
Zofia Hryniewiecka-Szyfter ◽  
Adam Babula
Keyword(s):  
Fine Structure ◽  
Reproductive System ◽  
Female Reproductive System ◽  
Accessory Glands ◽  
Saduria Entomon

Fine structure of the female reproductive system in a viviparous insect, Glossina morsitans morsitans (Diptera, Glossinidae)

2011 ◽  
Vol 43 (1) ◽  
pp. 1-7 ◽  
Author(s):  
A. Pellegrini ◽  
E. Bigliardi ◽  
N. Bechi ◽  
L. Paulesu ◽  
M.J. Lehane ◽  
...  
Keyword(s):  
Fine Structure ◽  
Reproductive System ◽  
Glossina Morsitans Morsitans ◽  
Female Reproductive System ◽  
Glossina Morsitans

scholarly journals Ovary Structure and Oogenesis of Trypophloeus klimeschi (Coleoptera: Curculionidae: Scolytinae)

Insects ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1099
Author(s):  
Jing Gao ◽  
Jiaxing Wang ◽  
Hui Chen
Keyword(s):  
Electron Microscopy ◽  
Reproductive System ◽  
Secretory Cells ◽  
Female Reproductive System ◽  
Transition Stage ◽  
Accessory Glands ◽  
Transmission Electron ◽  
Secondary Stage ◽  
Terminal Filament ◽  
Structure And Ultrastructure

The female reproductive system, ovary structure and ultrastructure of Trypophloeus klimeschi (Coleoptera: Curculionidae: Scolytinae) were investigated using light microscopy, scanning electron microscopy, and transmission electron microscopy. Its female reproductive system is comprised of two ovaries (each ovary has two ovarioles), lateral oviducts, common oviduct, spermathecal sac, spermathecal pump, two accessory glands and bursa copulatrix. Well-developed endoplasmic reticulum can be clearly seen in the secretory cells of spermathecal sac. This species has telotrophic meroistic ovarioles that are comprised of terminal filament, tropharium, vitellarium and pedicel. The terminal filaments are simple; each is comprised of cellular peritoneal sheath. The presence of several clusters of nurse cells in the tropharium is indicative that its ovarioles conform to the transition stage. This indicates that there are at least two different types (transition stage and secondary stage) of ovarioles in Curculionidae.

The fine structure of the female reproductive system of Zorotypus caudelli Karny (Zoraptera)

2012 ◽  
Vol 41 (1) ◽  
pp. 51-63 ◽  
Author(s):  
R. Dallai ◽  
D. Mercati ◽  
M. Gottardo ◽  
R. Machida ◽  
Y. Mashimo ◽  
...  
Keyword(s):  
Fine Structure ◽  
Reproductive System ◽  
Female Reproductive System

scholarly journals Morfología del sistema reproductor de la hembra de Comadia redtenbacheri (Hammerschmidt) (Lepidoptera: Cossidae). Morphology of the female reproductive system of Comadia redtenbacheri (Hammerschmidt)

2015 ◽  
Vol 31 (3) ◽  
Author(s):  
Arturo Ramírez-Cruz ◽  
Celina Llanderal-Cázares
Keyword(s):  
Reproductive Biology ◽  
Reproductive System ◽  
Bursa Copulatrix ◽  
Female Reproductive System ◽  
Potential Fecundity ◽  
Accessory Glands ◽  
Economic Significance ◽  
Average Potential ◽  
Glandular Portion

RESUMEN. Debido a su importancia económica y con la finalidad de profundizar en el conocimiento sobre la biología reproductiva del  gusano rojo del maguey Comadia redtenbacheri (Hammerschmidt) (Lepidoptera: Cossidae), se determinó la morfología del sistema reproductor de la hembra de esta especie, el cual presenta en general las características básicas de otros Lepidoptera, con algunas particularidades  específicas. La fecundidad potencial tuvo un valor promedio de 104 ovocitos por hembra. En la base de la bursa copulatrix se presentó un pequeño divertículo o lóbulo, y dentro de ella se encontró un solo espermatóforo. La espermateca presentó tanto un utrículo como una lagena. La porción glandular de las glándulas accesorias es inusualmente larga en comparación a otros Lepidoptera.ABSTRACT. Due to the economic significance of the agave red worm Comadia redtenbacheri (Hammerschmidt) (Lepidoptera: Cossidae), and with the objective of increasing the knowledge about its reproductive biology, the morphology of the female reproductive system was studied. In general, it is similar to that of other Lepidoptera, with a few differences. The average potential fecundity was 104 oocytes per female. A small diverticulum or lobe was present in the base of the bursa copulatrix; inside the bursa, a single spermatophore was found. The spermatheca has a utriculus and a lagena. The glandular portion of the accessory glands is unusually long compared with other Lepidoptera.

scholarly journals Microtubule and microfilament distribution during the secretory activity of an insect gland

1988 ◽  
Vol 91 (4) ◽  
pp. 563-570
Author(s):  
R. DALLAI ◽  
D. MARCHINI ◽  
G. CALLAINI
Keyword(s):  
Reproductive System ◽  
Ceratitis Capitata ◽  
Early Stage ◽  
Secretory Activity ◽  
Secretory Cells ◽  
Female Reproductive System ◽  
Heavy Meromyosin ◽  
Secretory Cycle ◽  
Rhodamine Phalloidin ◽  
Accessory Glands

The distribution of microfilaments and microtubules was studied in the secretory cells of the accessory glands of the medfly (Ceratitis capitata) female reproductive system. Actin, demonstrated by rhodamine-phalloidin and heavy meromyosin decoration, is present around the extracellular storage cavity at the level of microvilli and the subapical cytoplasm of the cell. The size of such a cavity varies in relation to the secretory cycle of the cells and also the distribution of microfilaments. In the early stage of activity microtubules detected using an antibody against α-tubulin are distributed at the periphery of the cell and around the extracellular cavity. During secretion they occupy the whole of the cytoplasm and disappear at the end of the secretory cycle. The mechanism of the discharge of the secretion from the extracellular cavity is discussed.

FEMALE ENDOCRINE CONTROL MECHANISMS DURING THE NEONATAL PERIOD

1972 ◽  
Vol 70 (2) ◽  
pp. 396-408 ◽  
Author(s):  
K.-D. Schulz ◽  
H. Haarmann ◽  
A. Harland
Keyword(s):  
Protein Synthesis ◽  
Reproductive System ◽  
Rna Synthesis ◽  
Neonatal Period ◽  
High Dose ◽  
Female Reproductive System ◽  
Endocrine Control ◽  
Hypothalamic Region ◽  
Rna And Protein Synthesis ◽  
Physiological Dose

ABSTRACT The present investigation deals with the oestrogen-sensitivity of the female reproductive system during the neonatal period. Newborn female guinea pigs were used as test animals. At different times after a single subcutaneous injection of a physiological dose of 0.1 μg or an unphysiologically high dose of 10 μg 17β-oestradiol/100 g body weight, the RNA- and protein-synthesis was examined in the hypothalamic region, pituitary, cerebral cortex, liver, adrenal gland, ovary and uterus. With a physiological dose an increase in organ weight, protein content, RNA-and protein-synthesis was found only in the uterus. These alterations turned out to be dose-dependent. In addition to the findings in the uterus an inhibition of the aminoacid incorporation rate occurred in the liver following the injection of the high oestradiol dose. As early as 1 hour after the administration of 0.1 μg 17β-oestradiol an almost 100% increase in uterine protein synthesis was detectable. This result demonstrates a high oestrogen-sensitivity of this organ during the neonatal period. All the other organs of the female reproductive system such as the hypothalamus, pituitary and ovary did not show any oestrogen response. Therefore the functional immaturity of the uterus during post partem life is not the result of a deficient hormone sensitivity but is correlated with the absence of a sufficient hormonal stimulus at this time. The investigation on the effects of actinomycin resulted in different reactions in the uterus and liver. In contrast to the liver a paradoxical actinomycin effect was found in the uterus after treatment with actinomycin alone. This effect is characterized by a small inhibition of RNA-synthesis and a 50% increase in protein synthesis. The treatment of the newborn test animals with actinomycin and 17β-oestradiol together abolished the oestrogen-induced stimulation of the uterine RNA-and protein-synthesis. Consequently, the effect of oestrogens during the neonatal period is also connected with the formation of new proteins via an increased DNA-directed RNA-synthesis.

Sign in / Sign up

Export Citation Format

Share Document