Yan Jin

• Professor (Associate) at East China Sea Fisheries Research Institute

In order to understand the diel vertical migration and transport pattern during their early life stages, the vertical distribution of larvae and juveniles of the small yellow croaker (Larimichthys polyactis) in the Yangtze River estuary was investigated. Four sampling cycles were carried out at the station (122°39′ E, 31° N) during May and June 201...

Nursery habitats play a significant role in completing fish life cycles, and they are now recognized as essential habitats. Monthly variations in nursery ground distributions of Larimichthys polyactis were investigated in the southern Yellow Sea in 2019. Bayesian hierarchical models with integrated nested Laplace approximation were utilized to mode...

Sustainable fisheries management seeks to balance fisheries' conservation with fishers' economic well‐being. Marine protected areas are increasingly used as a component of management frameworks to improve the resilience of, or maintain, marine resources. However, any spatial management measures need to consider the seasonal distribution of key spec...

The frequency of cetacean strandings is increasing, with multiple causes identified. We examined temporal and spatial trends in stranding numbers along the coastal areas of the East China Sea from 1990 to 2021. Using structural equation models, we analyzed the relationships between strandings and climate, oceanic properties, and human activities. O...

Based on data collected from research vessel cruises performed in May 2020 off the East China Sea (ECS) and the southern Yellow Sea (YS) (26°30'-35°00' N, 120°30'-127°00' E), we analyzed the shrimp community and its relationships with environmental variables by using index of relative importance, biodiversity indices, and multivariate techniques. A...

Trichiurus japonicus is an economically important fish that ranks 11th in global marine fish capture production. However, the reproductive characteristics of this fish have undergone notable changes in recent decades, potentially affecting the quality of offspring and sustainable utilization. To improve our understanding of the physiological regula...

The larval distributions of the small-sized fishes Omobranchus elegans, Erisphex pottii, Benthosema pterotum, Acropoma japonicum, Upeneus bensasi, and Apogonichthys lineatus in the East China Sea ecosystem are important due to their ecological and economic benefits. To date, however, there have been few studies describing their population distribut...

In the year of 2016 to 2017, record-breaking marine heatwave (MHW) events occurred along the Chinese coast, exerting severe impacts on coastal fishes and fisheries. However, the response of the nekton community to MHW events still remains poorly understanding. Thus, to investigate the influences of the MHW events on species composition dynamics, th...

Backward-in-time Lagrangian model can identify potential spawning areas by reconstructing egg drift trajectories, contributing to accurately designing potential priority conservation plans for spawning areas. In this study, we apply this approach to investigate the small yellow croaker (Larimichthys polyactis) with commercial value in China. A two-...

Identifying the spatio-temporal distribution hotspots of fishes and allocating priority conservation areas could facilitate the spatial planning and efficient management. As a flagship commercial fishery species, Largehead hairtail (Trichiurus japonicus) has been over-exploited since the early 2000s. Therefore, the spatio-temporal management of lar...

Since 1850, each successive decade has been warmer than any preceding one. Warming could make a major contribution to the growth of fish larvae. To evaluate the influence of water temperature on the growth of larvae who spawned in later spring and early summer, we selected Scomberomorus niphonius, which has important ecological and economic value a...

Artificial reefs are often deployed by many countries for the purpose of enhancing fishing after a period of several years. The objective of this study was to analyze the effect of a pilot artificial reef system deployment in enhancing the demersal fish assemblages, investigated using both acoustic methods and bottom trammel nets, during four years...

Early maturity of economically important fish has become a global issue, which might affect the reproductive potential of fish stocks. We used the samples that were collected in a fisheries‐independent survey in the East China Sea annually around the end of August from 2002 to 2017 to investigate the maturation progress of female Hairtail Trichiuru...

Small yellow croaker is a trans-boundary fish resource shared by China and South Korea. Information on the distribution and preferred habitats of overwintering populations is lacking, parti-cularly in southern waters of Yellow Sea where the species is regulated together by China and South Korea. We simulated the geographic distribution under curren...

Six diets with different concentrations of L-phenylalanine (10.71, 12.71, 14.71, 16.71, 18.71, and 20.71 g kg ⁻¹ dry diet) were offered to the Pacific white shrimp Litopenaeus vannamei (Boone) reared in low-salinity water (0.50-1.20 g L ⁻¹ ) to determine the phenylalanine requirement. After an 8-wk feeding trial, the results indicated that weight g...

Understanding the spatial distribution and environmental characteristics of fish spawning grounds is essential to design effective fishery management. The half-fin anchovy Setipinna taty (Valenciennes, 1848) plays an important role in the marine food web. A survey with 54 stations was conducted in 2014 to study the spatio-temporal distribution of e...

海洋伏季休渔制度是当前中国最主要的渔业资源管理制度之一, 并在实践中得到不断调整与完善, 新的海 洋伏季休渔制度已于2017 年发布实施。为论证新制度延长拖网休渔期的渔业资源养护效应, 本研究依据 2015-2017 年每年5 月东海区拖网大面定点调查资料, 利用Ricker 动态综合模型, 从拖网的渔获结构特征和带鱼 (Trichiurus japonicus)的种群动力学过程视角开展了相应的量化分析研究。研究结果表明, 5 月拖网利用主体为带鱼 和小黄鱼(Larimichthys polyactis), 带鱼和小黄鱼的性成熟比例分别为92.04%~95.57%和13.82%~29.55%, 幼鱼比例 分别为74.94%~88.90%和0.03%~4.19%; 带鱼种群经过4.5 个月的休...

The horizontal distribution of the early life stages of small yellow croaker Larimichthys polyactis in the Yangtze River estuary and its adjacent area was investigated through six ichthyoplankton surveys conducted during the period of mid-April to mid-July 2015. A total of seven eggs and 2461 larvae and juveniles of small yellow croaker were collec...

The horizontal distribution of the early life stages of small yellow croaker Larimichthys polyactis in the Yangtze River estuary and its adjacent area was investigated through six ichthyoplankton surveys conducted during the period of mid-April to mid-July 2015. A total of seven eggs and 2461 larvae and juveniles of small yellow croaker were collec...

The indicator-based approach to fish stock assessment uses many indicators that characterize different attributes of a fish stock in order to assess its status. We considered 19 biological indicators to characterize location, dispersion, traits, fishing and abundance for the small yellow croaker, the indicators were derived from the 16-years (2000-...

Marine fish shows high heterogeneity in spatial aggregation. We analyzed the inter-deca-dal variations of stock density for Trichiurus japonicus in East China Sea (ECS) using geo-statistical approaches such as spatial autocorrelation and hotspot analysis, based on the data of T. japonicus from both bottom trawl fishery and research surveys in the o...

An 8-week growth trial was designed to study the effect of dietary tryptophan on juvenile Pacific white shrimp Litopenaeus vannamei (Boone) in low-salinity water (0.50–0.80 g L⁻¹). Six diets with different concentration of l-tryptophan (2.61, 3.11, 3.61, 4.11, 4.61 and 5.11 g kg⁻¹ dry diet, defined as diet T1, T2, T3,T4, T5 and T6, respectively) we...

The complete mitochondrial DNA (mtDNA) of Japanese Spanish mackerel (Scomberomorus niphonius) was cloned and sequenced. The total length of the mitochondrial genome is 16,646 bp with an accession number KY228987. Thirty-seven genes are identified in total, including 13 protein-coding genes, 22 transfer RNA (tRNA) genes, 2 ribosomal RNA (rRNA) genes...

The feeding habits of the mud shrimp Solenocera melantho were determined based on the analysis of 720 stomach contents sampled in the northern East China Sea during June 2009 and May 2010. The diet of the specimens was studied in relation to the season, sex, size class and reproductive condition. The diet of S. melantho consisted of 43 different pr...

The present study aims to evaluate the possible interactions between dietary protein levels, growth performance, gene expression and volatile compounds in the plasma and liver of juvenile grass carp. Juvenile grass carp (4.27 ± 0.01 g) were fed with six extruded purified diets containing different protein levels (200, 250, 300, 350, 400, 450 g kg-...

An 8-week feeding trial was conducted to evaluate the optimum dietary glycine level in low fishmeal diet for juvenile Pacific white shrimp, Litopenaeus vannamei. Six practical diets (44.4% protein, 8.8% lipid) were formulated to contain graded levels (2.26, 2.33, 2.44, 2.58, 2.67 and 2.74%) of l-glycine. Each diet was randomly assigned to triplicat...