Revealing Population Connectivity of the Estuarine Tapertail Anchovy Coilia nasus in the Changjiang River Estuary and Its Adjacent Waters Using Otolith Microchemistry

Jiang, Tao; Liu, Hongbo; Hu, Yuhai; Chen, Xiubao; Yang, Jian

doi:10.3390/fishes7040147

Cited by 8 publications

(3 citation statements)

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“…All specimen sampling was conducted in strict accordance with relevant guidelines and regulations established by the Animal Care and Use Committee of the Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences. According to a previously published study, the right sagittal otolith of C. nasus was used to confirm whether it was migratory using otolith fingerprint element technology 31 . As shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

Gap-free genome assembly of anadromous Coilia nasus

Wang

et al. 2023

Sci Data

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The Chinese tapertail anchovy, Coilia nasus, is a socioeconomically important anadromous fish that migrates from near ocean waters to freshwater to spawn every spring. The analysis of genomic architecture and information of C. nasus were hindered by the previously released versions of reference genomes with gaps. Here, we report the assembly of a chromosome-level gap-free genome of C. nasus by incorporating high-coverage and accurate long-read sequence data with multiple assembly strategies. All 24 chromosomes were assembled without gaps, representing the highest completeness and assembly quality. We assembled the genome with a size of 851.67 Mb and used BUSCO to estimate the completeness of the assembly as 92.5%. Using a combination of de novo prediction, protein homology and RNA-seq annotation, 21,900 genes were functionally annotated, representing 99.68% of the total predicted protein-coding genes. The availability of gap-free reference genomes for C. nasus will provide the opportunity for understanding genome structure and function, and will also lay a solid foundation for further management and conservation of this important species.

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Section: Methodsmentioning

confidence: 99%

Gap-free genome assembly of anadromous Coilia nasus

Wang

et al. 2023

Sci Data

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“…Strontium, a trace element in the water environment, could form an inert mark on the otoliths, which does not change with time migration [25]. Compared to fresh water, seawater has a higher level of strontium [26], indicating that information about the habitat environment of fish can be acquired [27]. By artificially changing the content of strontium in water, an 'elemental fingerprint' is formed in otoliths, which can be used to distinguish wild populations from released populations, so as to better evaluate the effect of stock enhancement and releasing.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Effectiveness of Marking Juvenile Takifugu obscurus Otoliths with Strontium

Zhang

Feng

et al. 2022

Fishes

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Strontium marking technology is commonly used for extensive marking in stock enhancement and releasing activities. In order to explore the feasibility of this technology for juvenile Takifugu obscurus, five different concentrations of strontium (0, 12, 18, 36, and 72 mg/L) were set up by strontium chloride hexahydrate (SrCl2·6H2O) and T. obscurus were immersed for 7 days. Then, T. obscurus were reared in non-additive water for 25 days. The results showed that the survival rate of all groups was 100%, except the 72 mg/L group, after 7 days of immersion. Moreover, the growths of all the marked groups were better than that of the control group. There was no significant difference between the control and marked groups, except for the 18 mg/L group, indicating that the appropriate concentration of strontium might have positive effect for T. obscurus. The strontium to calcium (Sr/Ca) ratios of otoliths in the marked groups increased with increasing concentration and time, which were higher than the baseline, respectively. Then, the Sr/Ca ratios returned to the original level, but the peak value was still retained, suggesting that the success rate of the strontium marking reached 100%. Notably, the residual strontium content of 18 mg/L group was insufficient for causing negative effects for T. obscurus after 25 days. Therefore, in consideration of the growth, survival, and effect of strontium marking on otolith, 18 mg/L is an appropriate concentration for strontium marking of juvenile T. obscurus. This study confirmed the feasibility of strontium marking for T. obscurus and provided a new approach to rationally and scientifically evaluate the stock enhancement and releasing efficiency of T. obscurus.

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“…Roloson et al [16] examined two hypotheses that anadromous brook trout (Salvelinus fontinalis) are more likely to arise from sea-run mothers, and that freshwater entry timing makes them vulnerable to pesticide-induced fish kills; meanwhile, Shrimpton et al [17] estimated the fidelity to natal streams of the Columbiaorigin Kokanee (Oncorhynchus nerka) in the Williston Reservoir. The work by Jiang et al [18] assessed the population connectivity of Coilia nasus. Results strongly suggest that there are two original natal populations in the Qiantang and Changjiang Rivers, whereas the population in the Yellow Sea has little connectivity with that of the Qiantang River, but has a supplementary relationship with that of the Changjiang River.…”

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confidence: 99%