Origin and distribution of glycogen during vitellogenesis of the scorpion fly, Panorpa communis

Ramamurty, P. S.

doi:10.1016/0022-1910(68)90025-5

Cited by 37 publications

(14 citation statements)

References 13 publications

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“…This shows the presence of glycogen chemically bonded with proteins (muco-or glycoproteins), which is resistant to these enzymes. Such muco-or glycoprotein nature of the yolk bodies has also been derived in the oocytes of Oncopeltus fasciatus (Bonhag 1955), Anisolabis mari tima (Bonhag 1956) and Panorpa communis (Ramamurty 1968). Ramamurty has postulated the synthesis of glycogen taking place in the oocyte itself.…”

Section: Discussionmentioning

confidence: 82%

“…These show that synthesis of glycogen in the oocytes of later stages is not confined to the peri pheral ooplasm. In the case of Panorpa, however, Ramamurty (1968) reports the synthesis of glycogen granules takes place only in the periplasma, whence they shift to the interior of the ooplasm in later stages. The CY2 bodies of the present insect also contain acid mucopolysaccharides, which is established by their positive reaction with Alcian blue, Toluidine blue and Dialysed iron.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Histochemical analysis of origin and composition of compound yolks of Chrotogonus trachypterus (Orthoptera).

Verma

Mohanty²

1978

CYTOLOGIA

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Section: Discussionmentioning

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Histochemical analysis of origin and composition of compound yolks of Chrotogonus trachypterus (Orthoptera).

Verma

Mohanty²

1978

CYTOLOGIA

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“…In most of these insects, however, yolk deposition also started with incorporation of PAS-positive substances or carbohydrates [ 24,25). Best's carmine-positive granules occurred in the follicular epithelium of stages 6 and 7, suggesting that the synthesis and deposition of glycogen was occurring as reported in other insects [24,[26][27][28][29].…”

Section: Resultsmentioning

confidence: 94%

Cytology and histochemistry of the ovary in the buffalo-fly,Lyperosia exigua(De Meijere) (Diptera: Muscidae)

Khurad¹,

Thakare

1980

International Journal of Invertebrate Reproduction

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297ioles. The follicle consists_ <;>fan o~cyte, 15 nurs_e cells a~d an envelope o! follicular epitheioles. The follicle consists of an oocyte, 15 nurse cell and an envelope of follicular epithelium. The oocyte and the nurse cells are interconnected by a system of ring canals. During vitellogenesis, the oocyte shows changes in its shape, size and cytological organization. The process of egg maturation has been divided into a series of 10 consecutive stages. PAS-positive material appeared first in the oocyte periphery during stage 9, and later on migrated towards the center. The nurse and follicular epithelial cells were PAS-negative. DNA was abundant in the nuclei of both the nurse and follicular epithelial cells during stages 3-7 but was not detectable with Feulgen's test in the oocyte nucleus at any stage. RNA was present in the ooplasm during stages 6-8 but in subsequent stages gradually decreased. During stages 4-7, high concentration of RNA was found in the follicular epithelium. The protein yolk appeared first towards the periphery of the oocyte adjacent to the follicular epithelium during stages 5 and 6, and then migrated towards the center of the oocyte. The sudanophilic lipid droplets, first seen in the nurse cells during stage 5, increased in numbers during stages 6 and 7. These droplets subsequently migrated from nurse cells to the oocyte via ring canal.

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“…NS = not significant, * significant (P < 0.05) and **significant (P < 0.01) when treated groups were compared with controls. Data analyzed through Student's t-test A sharp decline in the glycogen content of ovaries due to Citrus oil volatile, which presumably, adversely, affects the synthesis of glycogen in the oocytes, inactivating glycogen synthetase and / or by blocking the passage of raw materials for glycogen synthesis into the oocytes [40][41][42] . (Table 4).…”

Section: Resultsmentioning

confidence: 99%

Effects of Citrus Oil Volatiles on the Reproductive Biology of the Rice Moth, Corcyra Cephalonica (Stainton) (Lepidoptera: Pyralidae)

Kiran¹,

Pathak²

2014

J Pharm Sci Innov.

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Rice moth, Corcyra cephalonica (Stainton) (Lepidoptera: Pyralidae) is an important pest of stored food such as cereals, cereal products, oil seeds pulses dried fruits nuts and spices. A sharp reduction in percent egg hatchability was noticed at 72 hours exposure of the volatiles in comparison to 6, 12, 24 or 48 hours exposure period to the vapor action of 20, 40, 80, or 160 µl volume of Citrus oil. There was a marked decline in egg output and egg hatchability in reproductive pairs, whose larval development for the first 15 days/from 16 th day till 30 days/continuous till 30 days took place in an environment emanating from 20, 40, 80 or 160 µl volume of this oil. Appreciable reduction in egg laying capacity and egg viability was noticed at 6 hour exposure of the volatiles in comparison to 3 hour exposure period to the action of different volumes of this oil. There was significant reduction in Glycogen level, Total lipids, Total protein and Total free amino acids level in testes and ovaries of adults following their exposure to the action of selected volatiles for 6 hours, emanating from 20, 40, 80 or 160 µl volume of Citrus oil.

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Origin and distribution of glycogen during vitellogenesis of the scorpion fly, Panorpa communis

Cited by 37 publications

References 13 publications

Histochemical analysis of origin and composition of compound yolks of Chrotogonus trachypterus (Orthoptera).

Histochemical analysis of origin and composition of compound yolks of Chrotogonus trachypterus (Orthoptera).

Cytology and histochemistry of the ovary in the buffalo-fly,Lyperosia exigua(De Meijere) (Diptera: Muscidae)

Effects of Citrus Oil Volatiles on the Reproductive Biology of the Rice Moth, Corcyra Cephalonica (Stainton) (Lepidoptera: Pyralidae)

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