气候变化领域集成服务门户(CCPortal): Environmental DNA based biomonitoring for hatchery-raised fish in riverine habitats before and after recordable flood event

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DOI	10.1080/02705060.2024.2340024
	Environmental DNA based biomonitoring for hatchery-raised fish in riverine habitats before and after recordable flood event
	Miyazono, Seiji; Miyahira, Hideaki; Hanaoka, Takumi; Nakao, Ryohei; Akamatsu, Yoshihisa
发表日期	2024
ISSN	0270-5060
EISSN	2156-6941
起始页码	39
结束页码	1
卷号	39 期号:1
英文摘要	It is reported that the magnitudes of flood events in riverine systems have been increasing due to global climate change. Because flood events could displace fish species downstream and/or increase the mortality of fish, it is important to know how the increased floods can affect fish in river networks. In this study, we focused a hatchery-raised amphidromous fish, Ayu Plecoglossus altivelis altivelis in a mainstem-tributary network in Japan and examined the relative fish abundance changes before and after the recordable massive flood using the environmental DNA (eDNA) analysis. We also examined the spatiotemporal patterns of the Ayu eDNA concentrations and the relationships with tributary discharge, width, and depth to examine if the relative abundance changes could be related to tributary size. Our results indicated that Ayu tended to inhabit large, deep tributaries more than small, shallow tributaries even after the flood event. Further, the eDNA concentrations of Ayu have decreased in most study sites after the flood; however, the eDNA concentrations in certain tributaries with lower tributary size have increased during the study period. These results suggest that (1) the habitat conditions could be important for the maintenance of Ayu populations before and after flood events, (2) increase in flood magnitude along climate changes could have impacts on Ayu populations, and (3) not only large tributary, but also small tributaries could be important habitats for the target species to avoid flood disturbances.
英文关键词	Flood disturbance; habitat size; Refugia; river; qPCR
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology
WOS类目	Ecology ; Limnology
WOS记录号	WOS:001202214300001
来源期刊	JOURNAL OF FRESHWATER ECOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/297574
作者单位	Yamaguchi University; Yamaguchi University
推荐引用方式 GB/T 7714	Miyazono, Seiji,Miyahira, Hideaki,Hanaoka, Takumi,et al. Environmental DNA based biomonitoring for hatchery-raised fish in riverine habitats before and after recordable flood event[J],2024,39(1).
APA	Miyazono, Seiji,Miyahira, Hideaki,Hanaoka, Takumi,Nakao, Ryohei,&Akamatsu, Yoshihisa.(2024).Environmental DNA based biomonitoring for hatchery-raised fish in riverine habitats before and after recordable flood event.JOURNAL OF FRESHWATER ECOLOGY,39(1).
MLA	Miyazono, Seiji,et al."Environmental DNA based biomonitoring for hatchery-raised fish in riverine habitats before and after recordable flood event".JOURNAL OF FRESHWATER ECOLOGY 39.1(2024).