基于2009年1月-2010年2月渔业资源调查数据,研究了马鞍列岛海域皮氏叫姑鱼的体长组成、体长与体质量关系、性比、繁殖习性和摄食等渔业生物学.结果表明:1)马鞍列岛海域皮氏叫姑鱼群体体长范围30 ～264 mm,优势体长组为80～100和130～180mm；2)皮氏叫姑鱼幼鱼和雄性个体的生长呈负异速生长的特性,而雌性个体呈正异速生长的特性；3)雌雄比为1.68:1(x2 =35.636,P＜0.001),雌雄比随月份和体长变化,除8月和9月及体长110～150和160 ～180mm外,雌雄个体数差异明显；4)皮氏叫姑鱼的繁殖期从6月持续到9月,其雌性和雄性个体首次性成熟体长分别为124.8和136.4mm；5)皮氏叫姑鱼的饵料生物随月份和个体生长发生转变,幼鱼主要摄食端足类,而成鱼在繁殖前期主要摄食鱼类和虾类,繁殖期间主要摄食端足类.与其他海域相比,马鞍列岛海域皮氏叫姑鱼群体具有较大的体长范围和优势体长组体长.为持续利用皮氏叫姑鱼资源,建议加强繁殖群体和幼鱼群体的保护.%The fisheries biology characters of Johnius belangerii,including size composition,relation of body length and weight, sex ratio,reproduction habits and diet, were analyzed based on the data collected from January 2009 to February 2010 off Ma' an Archipelago. Results showed that the body length range of J. belangerii was 30 -264 mm,and the dominant body length groups were 80 -100 mm and 130 -180 mm. Juveniles and males showed a negatively allometric growth, while females showed a positively allometric growth. Sex ratio (females: males) was 1.68:1 and it varied with months and body length obviously except August and September and length groups 110 -150 mm and 160 -180 mm. The reproductive season was from June to September. The estimated ML50 for females and males were 124. 8 mm and 136. 4 mm, respectively. The diet compositions changed along with month and body length. Juveniles mainly preyed on amphipoda and the adults mainly fed on fish and shrimps before reproduction and fed on amphipoda during reproductive period. The range of body length and length of dominant body length groups of J. belangerii, off Ma' an Archipelago were greater than other sea areas. Measures relating to reproductive stock and juveniles of J. belangerii protection should be taken in order to achieve continuous use of this species' resources.
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