Leuchithys nelma Stenodus胚胎后发育过程中Kolk合胞层的命运

IF 0.9 4区生物学 Q4 ECOLOGY

Annales Zoologici Fennici Pub Date : 2021-09-06 DOI:10.5735/086.058.0404

E. Kondakova, V. A. Bogdanova

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引用次数: 2

摘要

卵黄合胞层（YSL）是硬骨鱼胚胎和幼虫的一种多功能过渡结构。YSL具有营养、形态发生和免疫功能。然而，关于不同硬骨鱼类YSL结构的数据是零散的。我们的目的是通过分析一系列组织学切片来表征胚胎后inconnu（Stenodus leuchthys nelma）的YSL以及母体储备的耗尽。孵化时，蛋黄复合体位于肝脏前方，在前部区域包含一个大的油球（OG）、额外的1-2个OG和蛋黄本身。OG周围的YSL区域呈条纹状，卵黄周围的区域沿顶基底方向呈区域化。卵黄合胞细胞核（YSN）体积大，形状复杂。大约在孵化后第17天（dph），卵黄耗尽。1–2个大OG保留在卵黄复合体中，直到YSL在31 dph时程序性死亡。珊瑚虫幼虫卵黄复合体的组织结构是珊瑚科的典型特征。彗星状YSN的丰富性是其独特之处。

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The Fate of the Kolk Syncytial Layer during Postembryonic Development of Stenodus leucichthys nelma

The yolk syncytial layer (YSL) is a multifunctional transient structure of teleost embryos and larvae. The YSL performs nutritional, morphogenetic and immune functions. However, the data on the YSL structure in different teleost species is fragmented. We aimed to characterize YSL of the postembryonic inconnu (Stenodus leucichthys nelma) along with the depletion of maternal reserves by analyzing serial histological sections. At hatching, the yolk complex was located anterior to the liver and contained a large oil globule (OG) in the front region, 1–2 additional OG, and the yolk itself. The YSL region around the OG was striated, the region surrounding the yolk was regionalized in an apico-basal direction. The yolk syncytial nuclei (YSN) were large and complex-shaped. The yolk was exhausted by approximately the 17th day post hatching (dph). One–two large OG remained in the yolk complex until the programmed death of the YSL at 31 dph. The organization of the larval yolk complex of the inconnu was typical for Coregonidae. The abundance of comet-shaped YSN was its peculiarity.

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来源期刊

Annales Zoologici Fennici 生物-动物学

CiteScore

2.40

自引率

14.30%

发文量

审稿时长

>12 weeks

期刊介绍： Annales Zoologici Fennici publishes mainly original research reports, but also in-depth reviews and commentaries on all aspects of animal ecology and evolution, and fields related to them. Our aim is to promote papers which focus on the interactions among various components in the past and present environments by using integrative and cross-disciplinary approaches. This may be achieved by employing tools from different fields of research, such as (but not restricted to): ecology and paleoecology, molecular ecology and phylogeography, conservation biology, human-induced contemporary evolution and wildlife management, animal behaviour and interactions (including recognition systems and mechanisms), paleontology (except systematics and taxonomy) and evolution, bioenergetics.