Multiple Fetal Nutritional Patterns Before Parturition in Viviparous Fish Sebastes schlegelii (Hilgendorf, 1880)
文献类型：期刊论文
| 作者 | Du Tengfei2,3,4 ; Xiao Yongshuang1,2,3; Zhao Haixia2,3,4; Zhou Li2,3,4; Liu Qinghua2,3; Wang Xueying2,3; Li Jun1,2,3; Xu Shihong2,3; Wang Yanfeng2,3; Yu Jiachen2,3,4
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| 刊名 | FRONTIERS IN MARINE SCIENCE
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| 出版日期 | 2021-01-14 |
| 卷号 | 7页码:13 |
| 关键词 | fish viviparity fetal nutrition matrotrophy lecithotrophy placental analogs |
| DOI | 10.3389/fmars.2020.571946 |
| 通讯作者 | Li Jun(junli@qdio.ac.cn) |
| 英文摘要 | Sebastes schlegelii is a commercially important fish with a special viviparous reproductive system that is cultured in near-shore seawater net cages in East Asia. In the gonadal development of the species, the gonad of males mature before those of females, which mature after mating. Mating in male/female fishes occurs in October of each year. Then, females undergoing oocyte maturation complete fertilization using stored sperm in March of the following year. The pregnancy is completed when larvae are produced in the ovary. It has been reported that embryonic nutrient supply originates entirely from the female viviparous reproductive systems. However, until now, the nutritional patterns and the processes of nutrient provision in S. schlegelii before parturition have not been clear. The goal of this research was to study the embryos, larvae and juveniles of S. schlegelii during pregnancy. Anatomical observations, light microscopy and scanning electron microscopy were used to study the developmental characteristics of early embryos and larvae and the connecting structures between the mother and the fetus. The results showed the following: (1) Placental-like structures were found during the process of embryonic development in S. schlegelii, and these placental-like structures proliferated after fertilization. (2) The embryos of S. schlegelii were encased by a saclike structure composed of blood vessels, connective tissue, and surface epithelial cells. The vessels near the embryo existed in the thecal layer. Vascularized proliferation was detected following embryonic development. (3) Starting in the gastrula stage, connections between the embryo and surrounding cells loosened, and ovarian fluid became abundant. In addition, a large number of small holes and cristae were observed on the surface of the embryo. We speculate that embryos may be able to absorb nutrients from the ovarian fluid. (4) Yolk was present throughout embryo development. (5) Two types of nutritional modes were observed, lecithotrophic and matrotrophic during embryonic development. Three forms of placental analogs may exist in S. schlegelii: (1) external epithelial absorptive surfaces; (2) trophonemata, with modifications of the ovarian epithelia for absorbing the histotroph; and (3) a follicular pseudoplacenta, with close apposition between follicle cells and embryonic absorptive epithelia. |
| 资助项目 | National Key Research and Development Program[2018YFD0901204] ; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)[GML2019ZD0402] ; Major Agricultural Application Technology Innovation Project of Shandong Province[SD2019YY011] ; Qingdao National Laboratory for Marine Science and Technology[2018SDKJ0502-2] ; China Agriculture Research System[CARS-47] ; Major science and technology for scientific and technological innovation projects (Shandong)[2019JZZY020710] ; STS Project[KFZD-SW-106] ; STS Project[ZSSD-019] ; STS Project[2017T3017] ; STS Project[2019T3022] |
| WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:000612337100001 |
| 出版者 | FRONTIERS MEDIA SA |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/169679]  |
| 专题 | 海洋研究所_实验海洋生物学重点实验室 |
| 通讯作者 | Li Jun |
| 作者单位 | 1.Southern Marine Sci & Engn Guangdong Lab Guangzho, Guangzhou, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Mega Sci, Key Lab Expt Marine Biol, Qingdao, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Du Tengfei,Xiao Yongshuang,Zhao Haixia,et al. Multiple Fetal Nutritional Patterns Before Parturition in Viviparous Fish Sebastes schlegelii (Hilgendorf, 1880)[J]. FRONTIERS IN MARINE SCIENCE,2021,7:13. |
| APA | Du Tengfei.,Xiao Yongshuang.,Zhao Haixia.,Zhou Li.,Liu Qinghua.,...&Gao Guang.(2021).Multiple Fetal Nutritional Patterns Before Parturition in Viviparous Fish Sebastes schlegelii (Hilgendorf, 1880).FRONTIERS IN MARINE SCIENCE,7,13. |
| MLA | Du Tengfei,et al."Multiple Fetal Nutritional Patterns Before Parturition in Viviparous Fish Sebastes schlegelii (Hilgendorf, 1880)".FRONTIERS IN MARINE SCIENCE 7(2021):13. |
入库方式： OAI收割
来源：海洋研究所
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