Previtellogenic and vitellogenic oocytes in ovarian follicles of cultured siberian sturgeon <i>Acipenser baerii</i> (Chondrostei, Acipenseriformes)

Żelazowska, Monika; Fopp‐Bayat, Dorota

doi:10.1002/jmor.20618

Cited by 12 publications

(40 citation statements)

References 71 publications

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“…Previtellogenic oocytes and both previtellogenic and vitellogenic oocytes in ovarian follicles, as seen in the present study, were already described in Russian sturgeon (Zelazowska et al 2015) and in Siberian sturgeon (Zelazowska and Fopp-Bayat 2017).…”

Section: Discussionsupporting

confidence: 88%

Interspecific hybridization of sturgeon species affects differently their gonadal development

Linhartová¹,

Havelka²,

Pšenička³

et al. 2018

Czech J. Anim. Sci.

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Linhartová Z., Havelka M., Pšenička M., Flajšhans M. (2018): Interspecific hybridization of sturgeon species affects differently their gonadal development. Czech J. Anim. Sci., 63, 1-10.Gonad development in fish is generally assumed to be negatively influenced by interspecific hybridization, resulting in sterility or sub-sterility. However, this is not the case in sturgeons (Acipenseridae), in which fertile hybrids are common. In the present study, we investigated gonad development in several sturgeon interspecific hybrids and purebred species. Six interspecific hybrid groups and three purebred groups were analyzed including 20 hybrid specimens with even ploidy, 40 specimens having odd ploidy levels, and 30 purebred specimens. Hybrids of species with the same ploidy (even ploidy -2n, 4n) exhibited normally developed gonads similar to those seen in purebred specimens. In contrast, hybrids of species differing in ploidy (odd ploidy -3n) did not display fully developed gonads. Ovaries were composed of oocytes or nests of differentiating oocytes that ceased development in early stages of meiosis (pachytene to zygotene) with a higher content of adipose and apoptotic tissue. Testes contained single spermatogonia along with Sertoli cells and spaces lacking germ cells. The obtained results showed that gonad development was influenced by genetic origin and ploidy of the sturgeon hybrids and were consistent with full fertility of hybrids with even ploidy. Sterility of females, but possibly limited fertility of males, is suggested for hybrids with odd ploidy.

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Section: Discussionsupporting

confidence: 88%

Interspecific hybridization of sturgeon species affects differently their gonadal development

Linhartová¹,

Havelka²,

Pšenička³

et al. 2018

Czech J. Anim. Sci.

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“…It has also been investigated in teleost fish, for example, in zebrafish Danio rerio (Elkouby, ; Elkouby et al, ; Elkouby & Mullins, ; Lyman‐Gingerich & Pelegri, ; Marlow & Mullins, ), rainbow trout Salmo gairdneri (Beams & Kessel, ), golden grey mullet Mugil (Liza) auratus (Bruslé, ), medaka Oryzias latipes (Iwamatsu & Nakashima, ; Kobayashi & Iwamatsu, ; Nakamura et al, ), and in the Atlantic salmon Salmo salar (Škugor, Tveiten, Johnsen, & Andersen, ). It is also present in oocytes of several species of sturgeons and paddlefish (Chondrostei, Acipenseriformes); for example, in the Russian sturgeon, Acipenser gueldenstaedtii (Zelazowska et al, ; Żelazowska, Jankowska, Plewniak, & Rajek, ), Siberian sturgeon, A. baerii (Żelazowska & Fopp‐Bayat, , ), Chinese, A. sinensis , Dabry's, A. dabryanus sturgeons (Yang, Yue, Ye, Li, & Wei, ; Ye et al, ; Ye, Li, Yue, Yang, & Wei, ; Ye, Yue, Yang, Li, & Wei, ; Yue et al, ), the North American paddlefish, Polyodon spathula (Żelazowska et al, ; Żelazowska & Kilarski, ) as well as in numerous species of invertebrates (e.g., Bilinski et al, ; Kloc, Jedrzejowska, Tworzydlo, & Bilinski, ). In all species investigated, the Balbiani body is involved in the development of ooplasm polarity and marks the future vegetal region or vegetal pole in the oocytes.…”

Section: Introductionmentioning

confidence: 99%

Previtellogenic oocytes of South African largemouth bass Micropterus salmoides Lacépède 1802 (Actinopterygii, Perciformes) ‐ the Balbiani body, cortical alveoli and developing eggshell

Żelazowska

Halajian

2019

Journal of Morphology

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The ovaries of the largemouth bass Micropterus salmoides, an alien and invasive species in South Africa, contain a germinal epithelium which consists of germline and somatic cells, as well as previtellogenic and late vitellogenic ovarian follicles. The ovarian follicle consists of an oocyte surrounded by follicular cells and a basal lamina; thecal cells adjacent to this lamina are covered by an extracellular matrix. In this article, we describe the Balbiani body and the polarization and ultrastructure of the cytoplasm (ooplasm) in previtellogenic oocytes. The nucleoplasm in all examined oocytes contains lampbrush chromosomes, nuclear bodies and several nucleoli near the nuclear envelope. The ultrastructure of the nucleoli is described. Numerous nuage aggregations are present in the perinuclear cytoplasm in germline cells as well as in the ooplasm. Possible roles of these aggregations are discussed. The ooplasm contains the Balbiani body, which defines the future vegetal region in early previtellogenic oocytes. It is comprised of nuage aggregations, rough endoplasmic reticulum, Golgi apparatus, mitochondria, complexes of mitochondria with nuage‐like material, and lysosome‐like organelles. In mid‐previtellogenic oocytes, the Balbiani body surrounds the nucleus and later disperses in the ooplasm. The lysosome‐like organelles fuse and transform into vesicles containing material which is highly electron dense. As a result of the fusion of the vesicles of Golgi and rough endoplasmic reticulum, the cortical alveoli arise and distribute uniformly throughout the ooplasm of late previtellogenic oocytes. During this stage, the deposition of the eggshell (zona radiata) begins. The eggshell is penetrated by canals containing microvilli and consists of the following: the internal and the external egg envelope. In the external envelope three sublayers can be distinguished.

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“…During oogenesis in sturgeons, macromolecules and organelles are accumulated in the ooplasm (Le Menn & Pelissero, ; Raikova, ; Rzepkowska & Ostaszewska, ; Yang, Yue, Ye, Li, & Wei, ; Ye, Li, Yue, Yang, & Wei, ; Ye et al, ; Yue et al, ; Żelazowska, ; Żelazowska & Fopp‐Bayat, ; Żelazowska, Jankowska, Plewniak, & Rajek, ; Żelazowska & Kilarski, ; Zelazowska, Kilarski, Bilinski, Podder, & Kloc, ). Reserve materials such as lipid droplets and yolk platelets are also accumulated (Lange & Kilarski, ; Le Menn & Pelissero, ; Żelazowska & Kilarski, ).…”

Section: Introductionmentioning

confidence: 99%

“…Reserve materials such as lipid droplets and yolk platelets are also accumulated (Lange & Kilarski, ; Le Menn & Pelissero, ; Żelazowska & Kilarski, ). Egg envelopes are deposited on a plasma membrane (oolemma) (Debus, Winkler, & Billard, ; Le Menn & Pelissero, ; Psenicka, Rodina, & Linhart, ; Żelazowska, ; Żelazowska & Fopp‐Bayat, ).…”

Section: Introductionmentioning

confidence: 99%

“…The remaining diplotene stage oocytes in ovarian nests in Acipenser baerii are the same as PE1 oocytes (Żelazowska et al, ). Oocytes in individual ovarian follicles that are surrounded by thecal cells in developing ovaries and in sexually matured A. baerii are in very advanced diplotene and in the diakinesis stages (Żelazowska & Fopp‐Bayat, ).…”

Section: Introductionmentioning

confidence: 99%

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Ovarian nests in cultured females of the Siberian sturgeon Acipenser baerii (Chondrostei, Acipenseriformes)

Żelazowska¹,

Fopp‐Bayat

2017

Journal of Morphology

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Ovaries of Acipenser baerii are of an alimentary type and probably are meroistic. They contain ovarian nests, individual follicles, inner germinal ovarian epithelium, and fat tissue. Nests comprise cystoblasts, germline cysts, numerous early previtellogenic oocytes, and somatic cells. Cysts are composed of cystocytes, which are connected by intercellular bridges and are in the pachytene stage of the first meiotic prophase. They contain bivalents, finely granular, medium electron dense material, and nucleoli in the nucleoplasm. Many cystocytes degenerate. Oocytes differ in size and structure. Most oocytes are in the pachytene and early diplotene stages and are referred to as the PACH oocytes. Oocytes in more advanced diplotene stage are referred to as the DIP oocytes. Nuclei in the PACH oocytes contain bivalents and irregularly shaped accumulation of DNA (DNA-body), most probably corresponding to the rDNA-body. The DNA-body is composed of loose, fine granular material, and comprises multiple nucleoli. At peripheries, it is fragmented into blocks that remain in contact with the inner nuclear membrane. In the ooplasm, there is the rough endoplasmic reticulum, Golgi complexes, free ribosomes, complexes of mitochondria with cement, fine fibrillar material containing granules, and lipid droplets. The organelles and material of nuclear origin form a distinct accumulation (a granular ooplasm) in the vicinity of the nucleus. Some of the PACH oocytes are surrounded by flat somatic cells. There are lampbrush chromosomes and multiple nucleoli present (early diplotene stage) in the nucleoplasm. These PACH oocytes and neighboring somatic cells have initiated the formation of ovarian follicles. The remaining PACH oocytes transform to the DIP oocytes. The DIP oocytes contain lampbrush chromosomes and a DNA-body is absent in nuclei. Multiple nucleoli are numerous in the nucleoplasm and granular ooplasm is present at the vegetal region of the oocyte.

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Previtellogenic and vitellogenic oocytes in ovarian follicles of cultured siberian sturgeon Acipenser baerii (Chondrostei, Acipenseriformes)

Cited by 12 publications

References 71 publications

Interspecific hybridization of sturgeon species affects differently their gonadal development

Interspecific hybridization of sturgeon species affects differently their gonadal development

Previtellogenic oocytes of South African largemouth bass Micropterus salmoides Lacépède 1802 (Actinopterygii, Perciformes) ‐ the Balbiani body, cortical alveoli and developing eggshell

Ovarian nests in cultured females of the Siberian sturgeon Acipenser baerii (Chondrostei, Acipenseriformes)

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