Simultaneous and sympatric occurrence of early juveniles of Acanthopagrus latus and A. schlegelii (Sparidae) in the estuary of northern Vietnam
Simultaneous and sympatric occurrence of early juveniles of Acanthopagrus latus and A. schlegelii (Sparidae) in the estuary of northern Vietnam
复制标题
越南北部河口棘鲂和石斑鱼早期幼鱼同时同域出现
DOI：
10.1007/s10201-019-00581-3
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
H.D. Tran & I. Kinoshita
中科院分区：
文献类型：
--
作者：
Tran;T.T.;H.D. Tran & I. Kinoshita
鲷科（Sparidae）的两种鲷属（SparopagruslatusandA.schlegelii）是分布于亚洲东部北方热带至温带沿海沃茨的近缘种。在越南北方的天燕河口，这可能是最南端的共同发生地点，这两个物种的早期生活史进行了调查，围网采样。在越南北方，这两种鱼的早期幼鱼都发生在12月至3月（A.schlegelii）或12月至4月（A.latus）的天燕河口，当时的温度范围为约100 ℃。16至25 °C。在日本，一年中有两次（春季和秋季）观测到给定的温度范围，并且在每个季节中，A. latus和A. schlegelii早期幼鱼分别是丰富的。因此，在亚洲范围内，这两种鱼的早期幼鱼的温度周期性是普遍的。这两个物种发生在相同的发展阶段，显着更丰富，具有较大的尺寸在A. latus。早期幼鱼主要生活在河口沃茨水域。虽然沃茨继续混合水平的温度，但在研究期间的盐度分层，有两个物种的发展阶段和大小站之间的变化不大。越南的这两种孔雀鱼在同一季节产卵，它们的早期幼鱼同时使用同一个育苗场。
AcanthopagruslatusandA.schlegelii(Sparidae) are closely related species distributed in northern tropical to temperate coastal waters of eastern Asia. Early life histories of the two species were investigated by seine net sampling in the Tien Yen estuary, northern Vietnam, which is probably the southernmost co-occurrence locality for these species. In northern Vietnam, early juveniles of both theAcanthopagrusspecies occurred in the Tien Yen estuary from December to March (A.schlegelii) or December to April (A.latus) when temperatures ranged from ca. 16 to 25 °C. The given temperature range is observed twice (spring and autumn) a year in Japan, andA.latusandA.schlegeliiearly juveniles are abundant respectively in each season. Thus, a thermoperiodicity of early juveniles of the twoAcanthopagrusis common Asia-wide. The two species occurred as the same developmental stage, being markedly more abundant and having larger sizes inA.latus. TheAcanthopagrusearly juveniles inhabited bank waters of the estuary. Although waters continued to be mixed horizontally by temperatures but to be stratified by salinities during the study period, there was little variation in developmental stage and size among stations for both species. The twoAcanthopagrusspecies from Vietnam spawn for the same season and their early juveniles simultaneously use the same nursery ground.