Characteristics and Heterogeneity of Growth and Maturity of Ridgetail White Prawn Exopalaemon carinicauda in Yalu River Estuary
WANG Xiaolin, LIU Xiuze, JI Guang, WANG Aiyong, DONG Jing, WANG Bin, XU Yanzhao, ZHANG Yijing
Dalian Key Laboratory of Conservation of Fishery Resources, Liaoning Key Laboratory of Marine Biological Resources and Ecology, Key Laboratory of Protection and Utilization of Aquatic Germplasm Resource, Ministry of Agriculture and Rural Affairs, Liaoning Ocean and Fisheries Science Research Institute, Dalian 116023, China
Abstract：In order to understand the growth and reproduction of ridgetail white prawn Exopalaemon carinicauda in the Yalu River estuary, the growth and maturity characteristics of E. carinicauda were studied using analysis of variance (ANOVA), power function, logistic curve and electronic length frequency analysis (ELEFAN) based on the resource survey conducted in the Yalu River estuary from 2015 to 2017. The results showed that E. carinicauda in the Yalu River estuary was heterozygous, with higher mean body length and body weight in females than those in males (P<0.05). The asympototic length(L∞) of female was found to be 91.88 mm, with K of 0.65. The L∞ of male was shown to be 86.63 mm, with K of 0.46. There were significant seasonal variations (P<0.05) in body length and body weight of female, without significant seasonal differences in male growth. The range of parameter a in the length-weight relationship for E. carinicauda was 3.20×10-5 to 3.49×10-4, with relatively large values (>1.0×10-4) for both females and males collected in spring and autumn. The seasonal trends of the allometric growth factor b in the length-weight relationship were consistent for both female and male: isometric growth for individuals in summer and winter (2.87, 2.96 for females, and 2.81, 2.86 for males), and negative allometric growth for individuals in spring and autumn (2.41, 2.18 for females, and 2.50, 2.21 for males). The body length of the egg-carrying females was ranged from 38 to 80 mm, with mean egg-carrying body length of 52.06 mm. The findings provide further understanding of growth and maturity characteristics of E. carinicauda in the Yalu River estuary, significant sexual and seasonal variations, and basic information on the life history characteristics and population dynamics of this important species.
王小林, 刘修泽, 吉光, 王爱勇, 董婧, 王彬, 胥延钊, 张怡晶. 鸭绿江口脊尾白虾生长和繁殖特征及异质性分析[J]. 水产科学, 2025, 44(1): 129-135.
WANG Xiaolin, LIU Xiuze, JI Guang, WANG Aiyong, DONG Jing, WANG Bin, XU Yanzhao, ZHANG Yijing. Characteristics and Heterogeneity of Growth and Maturity of Ridgetail White Prawn Exopalaemon carinicauda in Yalu River Estuary. Fisheries Science, 2025, 44(1): 129-135.
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2025, Vol. 44 
