Cell differentiation during the ontogeny of larval salivary glands of the fly, Telmatoscopus albipunctatus

Simões, L. C. G.; Jurand, A.; Sehgal, S. S.

doi:10.1016/0022-1910(77)90009-9

Cited by 7 publications

(2 citation statements)

References 18 publications

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“…4). Salivary glands of treated larvae were not suitable for squash preparations like those in young control larvae (Sim6es, Jurand & Sehgal, 1977). In successful preparations, chromosomes in treated larvae of the 4th instar and prepupa were of very low polyteny (Figs 5 and 6).…”

Section: Effect On Salivary Gland Chromosomesmentioning

confidence: 98%

EFFECTS OF CAFFEINE ON GROWTH AND METAMORPHOSIS OF MOTH FLY TELMATOSCOPUS ALBIPUNCTATUS (DIPTERA, PSYCHODIDAE

Sehgal

Simões

Jurand

1977

Entomologia Exp Applicata

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Caffeine causes severe retardation of growth and development and high mortality of larvae Telmatoscopus albipunctatus. In general, sensitivity to caffeine is inversely proportional to the age of the treated larvae. Adults originating from treated larvae show lower fertility. Treatment of pupae results in elongated abdomens, abnormal wings and reduced fertility in adults. Caffeine also affects adversely polytenization of chromosomes. It is suggested that effects on larval growth and polytenization of chromosomes are due to retardation of DNA synthesis. Other possible mechanisms of action of caffeine are discussed. ZUSAMMENFASSUNG WIRKUNGEN VON KOFFEIN AUF WACHSTUM UND METAMORPHOSE DER SCHMETTERLINGSMÜCKE TELMATOSCOPUS ALBIPUNCTATUS (DIPTERA, PSYCHODIDAE) Koffein verursacht starke Verzögerung von Wachstum und Entwicklung sowie hohe Mortalität der Larven von Telmatoscopus albipunctatus. Im allgemeinen ist die Empfindlichkeit gegenüber Koffein umgekehrt proportional zum Alter der behandelten Larven. Adulte, die als Larven damit behandelt wurden, zeigen verminderte Fertilität. Behandlung von Puppen ergibt Adulte mit verlängertem Abdomen, anormalen Flügeln und verminderter Fertilität. Koffein beeinflußt auch die Polytänisierung der Chromosomen ungünstig. Es wird angenommen, daß die Beeinflussung des Larvenwachstums und der Polytänisierung der Chromosomen zurückzuführen ist auf verzögerte DNS‐Synthese. Es werden sodann andere mögliche Mechanismen der Wirkung des Koffeins diskutiert.

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Section: Effect On Salivary Gland Chromosomesmentioning

confidence: 98%

EFFECTS OF CAFFEINE ON GROWTH AND METAMORPHOSIS OF MOTH FLY TELMATOSCOPUS ALBIPUNCTATUS (DIPTERA, PSYCHODIDAE

Sehgal

Simões

Jurand

1977

Entomologia Exp Applicata

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“…Rising temperature and humidity affect the life cycle period and accelerate their growth. A female can lay from 200 to 300 eggs in her lifetime in sludge around sewage and drainage areas [ 2 , 6 ]. Eggs are small and transparent, no larger than 1 mm and hatch within 32–48 h [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Clogmia albipunctata (Nematocera; Psychodidae) as the Etiologic Agent of Myiasis: True or False?

et al. 2022

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Clogmia albipunctata, known as drain fly, is a non-hematophagous insect of the Psychodidae family with worldwide distribution, particularly in tropical and temperate areas. It can be found near sewer drains, sewage treatment plants, plant pots, swamps, and any other place containing decaying or moist organic matter. It has been introduced in several publications as the causative agent of myiasis in humans. A case presentation, together with a compilation of findings from a database, including 51 scientific publications in the literature, allowed us to overview critically in detail the variable aspects of epidemiology, life cycle, biology, and medical importance of this insect and its probable role in human myiasis. The absence of a precise definition of myiasis and the lack of incontestable epidemiological, entomological, and clinical evidence in the articles introducing C. albipunctata as a causative agent led us to interrogate its role in human myiasis. It is necessary to take into account this misinterpretation and make an accurate diagnosis based on the isolation of insect larvae from the corresponding lesion.

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Cytodiffrentiation in the accessory glands of Tenebrio molitor. VI. A congruent map of cells and their secretions in the layered elastic product of the male bean‐shaped gland

Dailey¹,

Gadzama²,

Happ³

1980

Journal of Morphology

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The morphology of the bean-shaped accessory glands (BAGs) of males of Tenebrio molitor is described. All cells in the secretory epithelium are long and narrow (300-400 mμ × 5 mμ). The seven types of secretory cells are distinguished from one another by the morphology of their secretory granules. Granule substructure varies from simple spheres with homogeneous electrondense contents to complex forms with thickened exterior walls or with crystalline and membranous contents. Individual cell types were mapped by staining whole glands with Oil Red O, and the cell distributions were confirmed by wax histology and ultramicroscopy. The secretions of all seven cell types form a secretory plug composed of seven layers. During mating, the secretory plug from each BAG is forced into the ejaculatory duct by contractions of a sheath of circular muscle. The mirror image plugs from symmetrical BAGs fuse and are transformed into the wall of the spermatophore.

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Cell differentiation during the ontogeny of larval salivary glands of the fly, Telmatoscopus albipunctatus

Cited by 7 publications

References 18 publications

EFFECTS OF CAFFEINE ON GROWTH AND METAMORPHOSIS OF MOTH FLY TELMATOSCOPUS ALBIPUNCTATUS (DIPTERA, PSYCHODIDAE

EFFECTS OF CAFFEINE ON GROWTH AND METAMORPHOSIS OF MOTH FLY TELMATOSCOPUS ALBIPUNCTATUS (DIPTERA, PSYCHODIDAE

Clogmia albipunctata (Nematocera; Psychodidae) as the Etiologic Agent of Myiasis: True or False?

Cytodiffrentiation in the accessory glands of Tenebrio molitor. VI. A congruent map of cells and their secretions in the layered elastic product of the male bean‐shaped gland

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