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首页> 外文期刊>Marine biology >Organ-like gonads, complex oocyte formation, and long-term spawning in Periphylla periphylla (Cnidaria, Scyphozoa, Coronatae)
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Organ-like gonads, complex oocyte formation, and long-term spawning in Periphylla periphylla (Cnidaria, Scyphozoa, Coronatae)

机译:多年生果皮中的器官样性腺,复杂的卵母细胞形成和长期产卵(Cindaria,Scyphozoa,Coronatae)

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摘要

An account is given about the development of the gametes of the holopelagic coronate scyphomedusa Periphylla periphylla (Peron and Lesueur 1809). The gonads of the species are complex and differ from those thus far described in Scyphozoa in having this characteristic composition of trophocytes, follicle cells, gamete-releasing pores, mucus cells, and resorption cells. Our results differ from those of previous coronate studies with respect to the contact of the oocytes with the gonad tissue throughout the duration of development. Among the Medusozoa, follicle cells have thus far been considered as an apomorphy for the Staurozoa, but their presence in the Scyphozoa casts some doubts on this assumption. From morphological structure and examination of the gonads and gametes, it can be deduced that P. periphylla has true organs and that gamete release is continuous. These results supplement our knowledge of the reproductive biology of this mesopelagic species.
机译:给出了关于全角锯齿冠状鳞茎水生圆环的配子发育的说明(Peron and Lesueur 1809)。该物种的性腺很复杂,与迄今在《 Shyphozoa》中描述的性腺不同,其具有营养细胞,卵泡细胞,释放配子的孔,粘液细胞和吸收细胞的这种特征组成。在整个发育过程中,卵母细胞与性腺组织的接触方面,我们的结果不同于先前的冠状动脉研究。在Medusozoa中,迄今为止,卵泡细胞被认为是Staurozoa的变形,但是它们在Spyphozoa中的存在使人们对此假设产生了疑问。从性腺和配子的形态结构和检查,可以推断出百日草具有真实的器官,配子的释放是连续的。这些结果补充了我们对中生近缘种的生殖生物学的了解。

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  • 来源
    《Marine biology》 |2010年第3期|527-535|共9页
  • 作者

    Henry Tiemann; Gerhard Jarms;

  • 作者单位

    Biozentrum Grindel und Zoologisches Museum, Universitaet Hamburg, Martin-Luther-King-Platz 3, 22146 Hamburg, Germany;

    rnBiozentrum Grindel und Zoologisches Museum, Universitaet Hamburg, Martin-Luther-King-Platz 3, 22146 Hamburg, Germany;

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