A light and electron microscope study on oogenesis in the freshwater pulmonate snail Biomphalaria glabrata

Jong-Brink, Marijke de; Wit, Ankie de; Kraal, G.; Boer, H. H.

doi:10.1007/bf00219406

Cited by 50 publications

(23 citation statements)

References 38 publications

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“…The same results were observed by Jong-Brink, et al (1976); Gaulejac et al (1995), Eckelbarger & Davis (1996) and Roy et al (2016) in other molluscs. The endogenous yolk formation predominates during the vitellogenic stage with proliferation of ooplasmic organelles.…”

Section: Discussionsupporting

confidence: 88%

“…The mitochondria became abundant in the vitellogenic oocytes of C. parreyssi where the mitochondria are produced essentially during the previtellogenic stage. This is due to that the respiratory activity is higher in early oocytes than in the later stages as described for Biomphalaria glabrata (Jong-Brink et al, 1976) and Pinna nobilis (Gaulejac et al, 1995). The multiplication of mitochondria is a common phenomenon in the oocytes of the bivalves.…”

Section: Discussionmentioning

confidence: 95%

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Histological and ultrastructural studies on oogenesis of the freshwater bivalve Caelatura (Horusia) parreyssi (Philippi, 1848)

Awad

Mustafa

2018

Egypt. J. of Aquatic Biolo. and Fish.

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Oogenesis Histology UltrastructureThe present study was carried out to describe the ovary and oogenesis in the freshwater bivalve Caelatura parreyssi from histological and ultrastructural points of view. Ten adult healthy clams collected from the River Nile were used in this study. The specimens were dissected and gonads were obtained and processed for histological and ultrastructural examination. Histologically, the ovary of C. parreyssi is composed of numerous of follicles which are connected together by connective tissue. Each follicle contains different stages of developing oocytes; oogonia, previtellogenic oocytes, vitellogenic oocytes and postvitellogenic oocytes (mature oocytes). At ultrastructural level, stages of female gametogenesis were examined; the process of oocytes formation and yolk deposition were described in successive stages of oogenesis. The structure and function of auxiliary cells and follicle cells in ovarian follicles during vitellogenesis were discussed. In conclusion, this study showed that the follicle cells play an important role during oogenesis but probably are not the major source of yolk precursors. The vesicular connective tissue is probably the main source of nutrients for vitellogenesis. The auxiliary cells appear to play an integrate role in the development of the oocytes as their functions can permit a transfer of precursors necessary to vitelogenesis.

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Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 95%

Histological and ultrastructural studies on oogenesis of the freshwater bivalve Caelatura (Horusia) parreyssi (Philippi, 1848)

Awad

Mustafa

2018

Egypt. J. of Aquatic Biolo. and Fish.

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“…by Larkman (1984). Mitochondria can divided in several ways, as shown for other molluscs in Taylor and Anderson (1969), and in Jong Brink et al (1976). Mitochondria were often associated to the rough ER, as reported for Mytilus edulis by Durfort (1976a,b).…”

Section: Discussionmentioning

confidence: 88%

Ultrastructural studies of oogenesis in <i>Bolinus brandaris</i> (Gastropoda: Muricidae)

Amor¹,

Ramón²,

Durfort³

2004

Sci. Mar.

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SUMMARY: Ultrastructural studies of oogenesis in Bolinus brandaris are described. Although the initial phase of oogenesis is common to most animal species, vitellogenesis can be considered a species-specific characteristic. In the vitellogenesis of B. brandaris, mitochondria and endoplasmic reticula play a relevant role in the formation of myelinised membranous systems. Nuclear envelope, Golgi body and the oocyte plasma membrane invaginations are three possible origins for annulate lamellae. The latter can be considered membranous reservoirs. There are two sources for the vitellum: exogenous (from follicular cells) and endogenous (from the endoplasmic reticulum of the same oocyte).Key words: vitellogenesis, mitochondria, endoplasmic reticulum, annulate lamellae, imposex.RESUMEN: ESTUDIO ULTRAESTRUCTURAL DE LA OOGENESIS DE BOLINUS BRANDARIS (GASTROPODA: MURICIDAE). -Aunque las primeras fases de la oogénesis son comunes en la mayoría de las especies animales, la vitelogénesis sin embargo, puede considerarse específica para cada una de ellas. En la vitelogénesis de Bolinus brandaris, cabe destacar el papel de las mitocondrias y del retículo endoplasmático en la formación de sistemas membranosos que asemejan figuras mielínicas. La envoltura nuclear, el complejo de Golgi y las invaginaciones de la membrana plasmática oocitaria podrían constituir los posibles orígenes de las láminas anilladas, que pueden considerarse un reservorio membranoso. El vitelo a su vez, puede tener dos orígenes: extrínseco (procedente de las células foliculares) e intrínseco (sintetizado por el retículo endoplasmático del propio oocito).Palabras clave: vitelogénesis, mitocondria, retículo endoplasmático, láminas anilladas, imposex.

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“…These crossings were sufficient to detect the mutagenicity of both compounds. The stages of gametogenesis in gastropods are, essentially, similar to those observed in mammals and morphologically well characterized [26,32,33], but its chronology has not been established. Thus, additional crossings to determine the affected stages of spermatogenesis were not done; these effects were estimated from the time-response curve of ovogenesis obtained by the analysis of the wild-type snails offspring.…”

Section: Discussionmentioning

confidence: 99%

Establishment of the dominant lethal test in the freshwater mollusk Biomphalaria glabrata (Say, 1818)

Nakano

Watanabe

Ohlweiler

et al. 2003

Mutation Research/Genetic Toxicology and Environmental Mutagene

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Mutagens in the environment may represent a long-term risk for ecosystems. The reproductive potential of populations can be affected by alterations in the fecundity and offspring viability caused by germ cell mutations. Despite the ecological relevance of these effects, there are few studies on germ cell mutagenicity in natural populations. Biomphalaria glabrata was chosen for this study because of the scarcity of data on freshwater invertebrates and the ecological importance of this group. The aim of this study was to establish a germ cell mutagenicity test in B. glabrata by using a similar approach to that used in the dominant lethal test in rodents. Mitomycin C was used as a direct mutagen and cyclophosphamide as a mutagen that requires metabolic activation. Wild-type snails were exposed for 10 days to three concentrations of each agent and crossed with non-exposed albino snails at the end of the treatment. The total frequencies of malformations were analyzed in the offspring of wild-type snails; among the offspring of albino snails, only the heterozygous wild-type embryos were analyzed for malformations. Both agents induced germ cell mutations. The analysis of the offspring of the wild-type snails showed an effect of the exposure up to approximately 5 days after the end of the treatment with cyclophosphamide; the effect of mitomycin C was observed until 45 days after the end of the exposure. There was an increase in the frequencies of malformations in the wild-type offspring of the non-exposed albino snails crossed with the wild-type snails exposed to both agents. The dominant lethal test in B. glabrata proposed in this work is easy to perform, efficient, specific and sensitive in the evaluation of germ cell mutations induced by reference mutagens. The possibility of expanding its use to environmental biomonitoring studies seems very promising and worth trying.

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A light and electron microscope study on oogenesis in the freshwater pulmonate snail Biomphalaria glabrata

Cited by 50 publications

References 38 publications

Histological and ultrastructural studies on oogenesis of the freshwater bivalve Caelatura (Horusia) parreyssi (Philippi, 1848)

Histological and ultrastructural studies on oogenesis of the freshwater bivalve Caelatura (Horusia) parreyssi (Philippi, 1848)

Ultrastructural studies of oogenesis in <i>Bolinus brandaris</i> (Gastropoda: Muricidae)

Establishment of the dominant lethal test in the freshwater mollusk Biomphalaria glabrata (Say, 1818)

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