黄颡鱼卵母细胞从产卵到幼虫早期的形态学变化（Glasby和Hsieh，2006）

Pub Date : 2022-01-02 DOI:10.1080/07924259.2021.2025159

Gaudioso Pates, Mercedes Maceren-Pates

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引用次数: 0

摘要

摘要/ ABSTRACT摘要:威氏卷毛卷毛是一种由隔片完全分开的多毛纲卷毛类。近年来对该物种的分子研究探讨了雌雄生殖细胞发育和生殖细胞再生的机制。虽然对该物种进行了一些分子研究，但其胚胎和幼虫的发育尚未描述。为了解决这个问题，卵母细胞从产卵到早期幼年阶段的发育被监测。描述了受精后数分钟/小时的形态学变化。在细胞分裂开始前，我们发现卵母细胞卵包膜发生了一些变化。在胚胎发育过程中，幼虫离开果冻层时为一个3节的油囊，具有完整的成体平面图，这是该物种典型的直接幼虫发育。在五节节性腺纲时期，背核圈发育完全。本文提供了该物种生殖生物学方面的重要信息。

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Notes on the morphological changes in the oocyte of the polychaete Perinereis wilsoni (Glasby and Hsieh 2006) from spawning to the early larval stage

ABSTRACT Perinereis wilsoni is a nereidid polychaete species with segments that are completely separated from each other by a septum. Recent molecular studies on this species discussed the mechanism of male and female germ cell development and germ cell regeneration. Although several molecular studies have been conducted on this species, its embryonic and larval development have not yet been described. To address this, oocyte development from spawning to the early juvenile stage was monitored. Morphological changes in relation to minutes/hours post-fertilization are described. We found several changes in the oocyte egg envelope before the start of cell division. During embryonic development, the larvae left the jelly layer as a 3-segmented nectochaete possessing a complete adult body plan, typical of the direct larval development in this species. The dorsal pygidial cirri were observed to develop fully during the five-segmented nectochaete stage. This paper provides important information on an aspect of the reproductive biology of this species.

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