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首页> 外文期刊>Marine biology >Lipid and fatty acid profiles of gametes and spawned gonads of Arbacia dufresnii (Echinodermata: Echinoidea): sexual differences in the lipids of nutritive phagocytes
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Lipid and fatty acid profiles of gametes and spawned gonads of Arbacia dufresnii (Echinodermata: Echinoidea): sexual differences in the lipids of nutritive phagocytes

机译：dubacres dufresnii（Echinodermata：Echinoidea）配子和产卵性腺的脂质和脂肪酸谱：营养吞噬细胞脂质的性别差异

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摘要

Sea urchin gonads contain nutritive phagocytes (NP) that store nutrients such as protein, lipid and carbohydrates for use during the production of gametes. While there is some information on the role of protein, particularly major yolk protein (MYP), during gametogenesis, very little is known about the role of lipids and their component fatty acids. We compared the lipid and FA profile of mature Arbacia dufresnii gonads (intact), with gonads that had been induced to spawn (spawned) and their associated gametes. The total lipid concentration decreased in females from the intact to the spawned gonads, and with a minimum value in the eggs, whilst male intact and spawned gonads had similar lipid concentrations, with significantly lower lipid concentration only in the sperm. Sex was the main factor affecting FA profile in the gonads (intact, spawned) and gametes of A. dufresnii, with differences in both the variety of FA, their total concentration and proportion. Interestingly, sexual differences in FA profile of the gonads are due not only to the presence of mature gametes, but also due to the NP and gametes remaining after spawning. As male and female sea urchins have the same basic gonad wall and NP structure, and the same echinoferrin based system for deposition of the MYP in the NP, our study reveals an unexplored biochemical complexity in the lipids and fatty acids of the NP within sea urchin gonads that has implications for future research.
机译：海胆性腺含有营养性吞噬细胞（NP），可储存营养物质，例如蛋白质，脂质和碳水化合物，可在配子生产过程中使用。尽管在配子发生过程中有一些有关蛋白质特别是主要蛋黄蛋白质（MYP）作用的信息，但对脂质及其组成脂肪酸的作用知之甚少。我们比较了成熟的Arfria dufresnii性腺（完整）与已诱导产生（产卵）的性腺及其相关配子的脂质和FA概况。从完整到产卵的性腺，雌性的总脂质浓度降低，卵中的总脂质浓度最低，而完整无损的雄性和产卵的性腺具有相似的脂质浓度，仅精子中的脂质浓度明显降低。性别是影响A. dufresnii性腺（完整，产卵）和配子中FA轮廓的主要因素，FA的种类，总浓度和比例均存在差异。有趣的是，性腺FA轮廓的性别差异不仅是由于存在成熟的配子，而且还由于产卵后残留的NP和配子。由于雄性和雌性海胆具有相同的基本性腺壁和NP结构，以及基于棘皮铁蛋白的基于MYP的系统沉积在NP中，因此我们的研究揭示了海胆中NP的脂类和脂肪酸存在未经探索的生化复杂性对未来研究有影响的性腺。

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  • 来源
    《Marine biology》 |2019年第7期|96.1-96.15|共15页
  • 作者

    Enriqueta Diaz de Vivar M.; Zarate Erica V.; Rubilar Tamara; Epherra Lucia; Avaro Marisa G.; Sewell Mary A.;

  • 作者单位

    Univ Nacl Patagonia San Juan Bosco, Fac Ciencias Nat, Lab Quim Organismos Marinos, Puerto Madryn, Chubut, Argentina;

    Univ Auckland, Sch Biol Sci, Auckland, New Zealand;

    Ctr Estudio Sistemas Marinos CESIMAR CONICET, Lab Oceanog Biol, Puerto Madryn, Chubut, Argentina;

    Ctr Estudio Sistemas Marinos CESIMAR CONICET, Lab Oceanog Biol, Puerto Madryn, Chubut, Argentina;

    Univ Nacl Patagonia San Juan Bosco, Fac Ciencias Nat, Lab Quim Organismos Marinos, Puerto Madryn, Chubut, Argentina;

    Univ Auckland, Sch Biol Sci, Auckland, New Zealand;

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