Interactions of the ring gland, ovaries, and juvenile hormone with brain neurosecretory cells in Musca domestica

Adams, T.S.; Grugel, Sharon; Ittycheriah, P.I.; Olstad, G.; Caldwell, J. D.

doi:10.1016/0022-1910(75)90113-4

Cited by 19 publications

(4 citation statements)

References 29 publications

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“…As we did not use azan staining, it is not possible to say whether similar cells exist also in the PI of Glossina. Adams et al (1975) and Adams (1976) confirmed Ramade's data regarding at least some NSC types, having found eight A-cells and four A'-cells in the whole PI of Musca.…”

Section: Discussionsupporting

confidence: 84%

“…It is possible that in various members of higher Diptera, the NSCs of homologous types control different processes related to their reproduction; e.g. in Musca domestica, a close relationship was established between the activity of A-cells (= A1 -cells of Glossina) and vitellogenesis (Adams et al, 1975 ;Adams, 1976), whereas in Glossina fuscipes fuscipes, these cells lost their NSM during ovulation, hatching of the 1st instar larva, and, particularly, at the time of parturition of the mature larva (N'kouka, 1976).…”

Section: Discussionmentioning

confidence: 99%

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Comparison between pars intercerebralis neurosecretory cells of Glossina and those of other higher Diptera

Panov

1979

Journal of Zoology

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Three types of the A‐neurosecretory cells (NSCs) were found in the pars intercerebralis (PI) of the adult brain of four species of tsetse flies (Glossina palpalis, G. pallidipes, G. austeni and G. morsitans). The typical formula of their composition is: 8 A1‐, 14 A2‐ and 4 A3‐cells. After permanganate oxidation, the neurosecretory materials (NSMs) of Al‐ and A3‐cells are rich in strong acid groups. The A2‐NSM contains both strong and weak acid groups after this treatment; besides, it retains a weak affinity to acid dyes. In addition to the A‐cells, the PI of Glossina species seems to include a number of NSCs of the type B. The data obtained indicate a great similarity of the NSC composition in the PI of Glossina and other related higher dipterans. In addition to the NSCs, giant neurons and particular cells with large cytoplasmic inclusions were also found in the PI of Glossina. The cells with large cytoplasmic inclusions correspond apparently to vacuolated cells previously observed in the brain of some flies. It is suggested that the considerable complication in reproductive biology which took place in tsetse flies had no effect on the composition of the NSCs in their PI when compared to that in related species with more ordinary cycles of reproduction.

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Section: Discussionsupporting

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Comparison between pars intercerebralis neurosecretory cells of Glossina and those of other higher Diptera

Panov

1979

Journal of Zoology

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“…Later allatectomy, however, led to the maturation of up to three eggs. The suggestion is made that the ca is essential for early egg development but not for vitellogenesis and in this respect the situation is similar to that in M. domestica (Adams, 1974;Adams et al, 1975). Replacement therapy by topical application of C 16 juvenile hormone to allatectomised female G. austeni apparently restores ovarian development and leads to normal pregnancies (Ejezie & Davey, 1976).…”

Section: Developmental Events Ovarian Developmentmentioning

confidence: 98%

Physiology of tsetse flies (Glossinaspp.) (Diptera: Glossinidae): a review

Langley

1977

Bull. Entomol. Res.

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Since no major review of the literature on tsetse physiology has hitherto been undertaken, relevant papers up to the beginning of 1977 are included in the present work. The physiology of Glossina is dealt with under three major headings; reproductive, developmental and nutritional events in the life of this haematophagous and viviparous insect are discussed in relation to general principles of insect physiology gained from the study of other genera. The role of adult maturation and the possible involvement of a sex pheromone in successful mating are considered. The difficulties of studying neuroendocrine function in relation to reproductive physiology in a viviparous insect, where reproductive and developmental events are not always separated chronologically, are emphasised. Nevertheless, the role of the neuroendocrine system in the control of such events as ovarian development, ovulation, parturition, pupariation and metamorphosis is considered, and the contribution that recent work on Glossina has made to an increased understanding of general principles in this field is discussed. Laboratory observations have demonstrated circadian components of behaviour in Glossina that can influence interpretation of field observations and likewise should influence the design of physiological experiments. Utilisation of nutritional reserves for larval growth and for flight activity has received considerable attention recently. The general pattern seems to be one of rapid mobilisation of blood-meal amino acids and the involvement of a large lipid reserve. The combined haematophagous and viviparous habit of Glossina has led to some interesting modifications of basic physiology particularly in regard to flight metabolism, female accessory gland function and Malpighian tubule activity. The relevance of physiological studies to current developments in the field of tsetse control is discussed and the importance of exploiting our knowledge in the quest for novel insecticidal techniques emphasised.

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“…In order to point out the changes in the intensity of NSM on the experiment days, the paraldehyde fuchsin positive granules in CA were counted. The NSM in the gland was numbered 0 to 5 increasingly according to its staining intensity (Adams et al, 1975). An average value for each day investigated was obtained by dividing the sum of the staining intensity of each CA into the number of CA of each the day.…”

Section: Measurementsmentioning

confidence: 99%

The Variation of the Amount of the Neurosecretory Materials in the Corpus Allatum of Pimpla turionellae L. (Hymenoptera: Ichneumonidae) During Oocyte Maturation

Özlük

2010

Pakistan J. of Biological Sciences

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The purpose of this study is to examine the effects of neurosecretory material (NSM) in Corpus Allatum (CA) of endoparasitic Pimpla turionellae L. on reproduction. For this purpose, the egg maturation of the insect and the amount of the NSM in CA of the serial section of the brain were studied. Egg maturation was determined by measuring the terminal oocyte length. In order to determine the amount of the NSM in CA the neurosecretory granules of which were stained by paraldehyde fuchsin are considered. The egg maturation of P. turionellae have performed twice. The NSM intensity in CA continued increasingly from the first day of egg development until the first oviposition days; and reached the maximum level before the second egg maturation phase. These observations showed that the NSM in CA of this insect may be related to egg development.

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Interactions of the ring gland, ovaries, and juvenile hormone with brain neurosecretory cells in Musca domestica

Cited by 19 publications

References 29 publications

Comparison between pars intercerebralis neurosecretory cells of Glossina and those of other higher Diptera

Comparison between pars intercerebralis neurosecretory cells of Glossina and those of other higher Diptera

Physiology of tsetse flies (Glossinaspp.) (Diptera: Glossinidae): a review

The Variation of the Amount of the Neurosecretory Materials in the Corpus Allatum of Pimpla turionellae L. (Hymenoptera: Ichneumonidae) During Oocyte Maturation

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