Oocyte growth and development in teleosts
WebThe rate of oocyte growth and oocyte size at the end of vitellogenesis were… Exibir mais We present a method for estimating the interspawning interval (ISI) in batch-spawning teleosts with indeterminate fecundity based on the rate of oocyte growth and the size of oocytes at the beginning and end of the spawning cycle. Web3 de mai. de 2011 · In the present paper, we introduce a method for estimating ISI in batch-spawning teleosts with indeterminate fecundity based on a conceptual model that links the rate of oocyte growth to the size of oocytes at the beginning and end of the spawning cycle (i.e., the time lag between subsequent spawning events).
Oocyte growth and development in teleosts
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WebSix stages in the course of folliculogenesis were observed, determined by (1) the formation of follicular and thecal cellular layers and a collagen-filled space between them, (2) the development of microvilli of oocytal and follicular origin, (3) the differentiation of the vitelline envelope and the pore channels, (4) pinocytotic activity of the oocytes, and (5) rapid … Web11 de abr. de 2024 · These dynamic expression patterns of cyp19a1a during development of ovarian follicles are presumably correlated with roles of E 2 in oocyte growth and …
Web9 de fev. de 2010 · Abstract. Data on the hydration of oocytes in teleost fishes during maturation stimulated by gonadotropic or steroid hormones in vivo and in vitro are … WebWhile it is generally well accepted that the ovarian follicular sites of estradiol-17β (E2) synthesis are restricted to somatic cells, the possible contribution of the germinal …
Web1 de fev. de 2010 · Three main types of ovarian development have been described for fish ( Wallace and Selman, 1981 ): (a) synchronous, where all oocytes develop and ovulate at … Webteleosts. Biologists have long ... The first step of the oocyte development is named as ... “primary growth stage” for . Gadus morhua (Kjesbu & Kryvi, 1989) and . Brachydanio …
Web1 de jan. de 2009 · The oocyte development of 34 females was classified into six stages (from early to late) as oogonial proliferation (OP), chromatin-nucleolus (CN), primary …
Web31 de dez. de 1994 · Abstract: Oocyte growth and development is an important issue in fish and fisheries biology. This paper reviews the information available on oocyte … dva wound chartWeb11 de abr. de 2024 · These dynamic expression patterns of cyp19a1a during development of ovarian follicles are presumably correlated with roles of E 2 in oocyte growth and maturation. The expression of cyp19a1a in ovarian follicles of teleosts was predominantly localized to follicular cells [11], [12], [13], [14]. dust collector for fine dustWebWhile it is generally well accepted that the ovarian follicular sites of estradiol-17β (E2) synthesis are restricted to somatic cells, the possible contribution of the germinal compartment has received little or no attention in teleosts. In order to demonstrate the expression of ovarian aromatase in the oocyte, cyp19a1a mRNA was studied in ovarian … dva yield call fetchWeb13 de set. de 2024 · Oocyte growth, follicular complex formation and extracellular-matrix remodeling in ovarian maturation of the imperial zebra pleco fish Hypancistrus zebra September 2024 Scientific Reports 8(1) dva youth allowanceWeb3 de mai. de 2011 · We present a method for estimating the interspawning interval (ISI) in batch-spawning teleosts with indeterminate fecundity based on the rate of oocyte growth and the size of oocytes at the beginning and end of the spawning cycle. dvac charlotteWeb5 de dez. de 2024 · Fecundity seems to be defined at a much earlier stage of oocyte development than previously thought, ... K. Cellular and dynamic aspects of oocyte growth in teleosts. Am. Zool. 21, 325–343 (1981). dva-react-router-3Web29 de nov. de 2009 · of the rate of oocyte growth (G) and oocyte size (O) at the be-ginning (O b) and end (O e) of the spawning cycle, ISI can be estimated with the following formula: ISI = Oe −Ob G. (1) Equation (1) is only valid when G is stable throughout the spawning cycle. However, most pelagic spawners undergo oocyte hydration, which is known to … dvaa clothing