Ovarian development and vitellogenesis in the sawfly,<i>Athalia rosae ruficornis</i>Jakovlev (Hymenoptera, Tenthredinidae)

Hatakeyama, Masatsugu; Sawa, Masami; Oishi, Kugao

doi:10.1080/07924259.1990.9672116

Cited by 37 publications

(14 citation statements)

References 14 publications

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“…Ultrastructural and histochemical observations have proved that follicle cells are synthetically active during both vitellogenesis and egg envelope formation (Mathew & Rai, 1975;Mazzini & Giorgi, 1984, 1985Gaino & Mazzini, 1990;Hatakeyama et al, 1990;Mouzaki & Margaritis, 1991;Raikhel & Dhadialle, 1992;Rosciszewska, 1995).…”

Section: Discussionmentioning

confidence: 99%

Fine structure of the egg envelopes inSilo mediterraneus saturniae(Trichoptera, Goeridae)

Bicchierai

Gaino

2000

Italian Journal of Zoology

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The temporal sequence of eggshell organization (vitelline envelope and chorion) in Silo mediterraneus saturniae (Trichoptera, Goeridae) is highlighted by means of ultrastructural investigation on ovarioles of newly emerged females. Precursors of the vitelline envelope, initially accumulating in the space around egg microvilli, merge together to give rise to a striated border. Discrete striae fuse into the final electron-dense vitelline envelope. Choriogenesis takes place along the apical region of the follicle cells facing the egg, throughout the progressive release of precursor material synthesized by the follicular epithelium. The onset of chorionic layer deposition is marked by irregular patches which gradually interconnect. As choriogenesis progresses, the follicular epithelium reduces in thickness. An epichorion, with a fibrillar texture, becomes gradually distinct from the follicle cell cytoplasmic matrix and is superimposed on the chorion. At the end of choriogenesis (chorion and epichorion synthesis) the follicular epithelium progressively separates from the egg and folds markedly, giving the chorion a pleated appearance. The synthesis and morphology of the eggshell in 5. mediterraneus saturniae are compared with those described for other insects laying eggs in water.

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Section: Discussionmentioning

confidence: 99%

Fine structure of the egg envelopes inSilo mediterraneus saturniae(Trichoptera, Goeridae)

Bicchierai

Gaino

2000

Italian Journal of Zoology

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“…Mature eggs of A. rosae, upon SDS-PAGE, are shown to contain two major yolk proteins L-Vn (with an apparent molecular mass of 180,000) and S-Vn (with an apparent molecular mass of 50,000) (Hatakeyama et al, 1990a) (the earlier estimate for the L was in error and is to be corrected as mentioned here, Kageyama et al, in preparation). Polyclonal antibodies raised against each of the L-Vn and the S-Vn were used in the Western blot analysis and demonstrated the presence of the corresponding L-Vg and S-Vg in the hemolymph of adult females but not of adult haploid or diploid males (Hatakeyama et al, 1990a).…”

Section: Vitellogenesismentioning

confidence: 97%

“…1) tend to contain about 60 nurse cells but deviations, from 40 to 80, are frequently observed. In the anterior less mature egg chambers the number becomes smaller to about 30 again with frequent deviations (Hatakeyama et al, 1990a).…”

Section: Ovarian Developmentmentioning

confidence: 97%

“…Polyclonal antibodies raised against each of the L-Vn and the S-Vn were used in the Western blot analysis and demonstrated the presence of the corresponding L-Vg and S-Vg in the hemolymph of adult females but not of adult haploid or diploid males (Hatakeyama et al, 1990a). Administration of juvenile hormone III to adult males induced appearance of hemolymph Vgs, but that of 20-hydroxyecdysone did not (Hatakeyama et al, 1990a;Hatakeyama & Oishi, 1990).…”

Section: Vitellogenesismentioning

confidence: 99%

“…Differentiation of germ cells to the oocyte and nurse cells become apparent during the late-larval and prepupal stages. Vitellogenesis begins in the late pupal stage and continues to the adult life (Hatakeyama et al, 1990a).…”

Section: Ovarian Developmentmentioning

confidence: 99%

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Genetics and biology of the sawfly,Athalia rosae (Hymenoptera)

et al. 1993

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Hymenopteran insects are a unique group of animals in which arrhenotokous reproduction (haploid males develop from unfertilized eggs) is a rule. Males produce sperm through a non-reductional maturation division. A sawfly species, Athalia rosae ruficornis Jakovlev Tenthredinidae, Symphyta, Hymenoptera) has introduced as a new experimental material for studies on genetics and developmental biology. Basic features relating to the potential usefulness of the species in elucidating some to the important genetic and developmental biological problems are described.

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Participation of testicular spermatids in development upon intracytoplasmic injection into eggs of the sawfly,Athalia rosae (Insecta, Hymenoptera)

2000

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Ovarian development and vitellogenesis in the sawfly,Athalia rosae ruficornisJakovlev (Hymenoptera, Tenthredinidae)

Cited by 37 publications

References 14 publications

Fine structure of the egg envelopes inSilo mediterraneus saturniae(Trichoptera, Goeridae)

Fine structure of the egg envelopes inSilo mediterraneus saturniae(Trichoptera, Goeridae)

Genetics and biology of the sawfly,Athalia rosae (Hymenoptera)

Participation of testicular spermatids in development upon intracytoplasmic injection into eggs of the sawfly,Athalia rosae (Insecta, Hymenoptera)

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