Histological Observation on Adult Gonads from Meiogynogentic Olive Flounder Paralichthys olivaceus

文献类型： 外文期刊

第一作者： Ma, Deyou

作者： Ma, Deyou;Weng, Shenda;Li, Jun;Zhang, Peijun;You, Feng;Ma, Deyou;Li, Jun;You, Feng;Sun, Peng

作者机构：

关键词： Paralichthys olivaceus; Meiogynogenesis; Gonad development; Histological characteristics; P450arom

期刊名称：INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY （ 影响因子：0.822； 五年影响因子：0.906 ）

ISSN： 1560-8530

年卷期： 2018 年 20 卷 3 期

页码：

收录情况： SCI

摘要： Gynogenesis is a common method to manipulate chromosomes of aquaculture animals with sex dimorphism. The adverse effects on gonad development can be identified through morphology and histology. The goal of this study was to examine the gonadal development of twenty-three meiogynogenetic olive flounder Paralichthys olivaceus samples of two-years age using histological and immunohistochemical methods. We found that ovaries of nine individuals developed normally, while those of fourteen fish exhibited some distinct malformation, including a pair of asymmetrically developed lobes (divided into only one lobe and one slowly developed lobe) and a pair of slowly developed lobes. The remaining two had unidentified gonads filled with connective tissue, indicating that gynogenesis induced by cold shock exerts adverse effect on this species. However, all meiogynogenetic ovaries developed to phase II, similar to the corresponding control. Furthermore, compared to the female references, the same level of P450arom positive responses was received in the aforementioned ovaries, and they were localized in the follicles and oocyte cytoplasms. The above-described results elucidated that meiogynogenetic P. olivaceus diploids are equipped with reproductive potential to undergo normal ovarian development and ovulation, suggesting they could be cultivated as broodstock to produce inbred lines for increase in flounder yields and enhancement of farmers' interests. (C) 2018 Friends Science Publishers

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