Molecular and Morphological Identification and Seasonal Distribution of Eggs of Four Decapterus Fish Species in the Northern South China Sea: A Key to Conservation of Spawning Ground

doi:10.3389/fmars.2020.590564

	Molecular and Morphological Identification and Seasonal Distribution of Eggs of Four Decapterus Fish Species in the Northern South China Sea: A Key to Conservation of Spawning Ground
	Hou, Gang 1; Wang, Jinrun 1; Chen, Zuozhi 2,3; Zhou, Jinlong 1; Huang, Wangsu 1; Zhang, Hui4,5,6
	2020-11-12
发表期刊	FRONTIERS IN MARINE SCIENCE
卷号	7 页码:10
通讯作者	Chen, Zuozhi(chenzuozhi@scsfri.ac.cn) ; Zhang, Hui(zhanghui@qdio.ac.cn)
摘要	Although species of Decapterus form important pelagic fisheries in the northern South China Sea, information on their spawning grounds is limited because identification of fish eggs based on their morphology is difficult. We identify eggs of four Decapterus species (D. macrosoma, D. maruadsi, D. macarellus, and D. tabl) with DNA barcodes from the fishery resources surveys in spring and autumn 2018 in Xisha islands, and spring and later summer-autumn 2019 along the continental shelf of the northern South China Sea, and describe egg morphology. Of 1405 fish eggs with obtained cytochrome c oxidase subunit I (COI) sequences, 81 were successfully attributed to four Decapterus species; eggs of each are spherical, have a smooth chorion and narrow perivitelline space, and can be partly differentiated by diameter, melanophore drops on the oil globule, and the notum of the embryo. Seasonal distributions of eggs reveal spawning grounds, with that of D. maruadsi located mainly off the Pearl River estuary in spring; eggs of D. maruadsi rarely co-occur with those of D. macrosoma. Spawning grounds of D. macrosoma are probably further south, where water temperature and salinity are higher. Spawning periods of these four Decapterus species overlap slightly. Spawning habitat of D. maruadsi has been lost, and the spawning season of D. macrosoma has extended. Identification of Decapterus eggs using DNA barcodes can assist with the identification of eggs using traditional morphological approaches. Spatial and temporal information on the distributions of Decapterus eggs can be used for improved conservation of spawning grounds and fisheries management in the northern South China Sea.
关键词	fish eggs DNA barcode morphology Decapterus spawning ground northern South China Sea
DOI	10.3389/fmars.2020.590564
收录类别	SCI
语种	英语
资助项目	Natural Science Foundation of China[31702347] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] ; Special Fund for Economic Development of Marine Economy of Guangdong Province[GDME2018E004] ; start-up project of Guangdong Ocean University[R19006] ; Youth Innovation Promotion Association CAS
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology
WOS类目	Environmental Sciences ; Marine & Freshwater Biology
WOS记录号	WOS:000591992800001
出版者	FRONTIERS MEDIA SA
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/169220
专题	海洋生态与环境科学重点实验室
通讯作者	Chen, Zuozhi; Zhang, Hui
作者单位	1.Guangdong Ocean Univ, Coll Fisheries, Zhanjiang, Peoples R China 2.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou, Peoples R China 3.Minist Agr & Rural Affairs, Key Lab Open Sea Fishery Dev, Guangzhou, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China 5.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China 6.Chinese Acad Sci, Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China
通讯作者单位	中国科学院海洋研究所; 中国科学院海洋大科学研究中心
推荐引用方式 GB/T 7714	Hou, Gang,Wang, Jinrun,Chen, Zuozhi,et al. Molecular and Morphological Identification and Seasonal Distribution of Eggs of Four Decapterus Fish Species in the Northern South China Sea: A Key to Conservation of Spawning Ground[J]. FRONTIERS IN MARINE SCIENCE,2020,7:10.
APA	Hou, Gang,Wang, Jinrun,Chen, Zuozhi,Zhou, Jinlong,Huang, Wangsu,&Zhang, Hui.(2020).Molecular and Morphological Identification and Seasonal Distribution of Eggs of Four Decapterus Fish Species in the Northern South China Sea: A Key to Conservation of Spawning Ground.FRONTIERS IN MARINE SCIENCE,7,10.
MLA	Hou, Gang,et al."Molecular and Morphological Identification and Seasonal Distribution of Eggs of Four Decapterus Fish Species in the Northern South China Sea: A Key to Conservation of Spawning Ground".FRONTIERS IN MARINE SCIENCE 7(2020):10.

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