While it is common knowledge that Red Drum (Sciaenops ocellatus) inhabit oligohaline waters (salinity <5), lifetime reconstructions of salinity histories have been lacking, and this study provides unique insight into interannual and ontogenetic patterns of oligohaline occupancy by this economically valuable sportfish. Growth consequences of oligohaline exposure and the relationship of oligohaline residency with river discharge were also investigated. Oligohaline exposure varied most during years 2 and 3 of life. During this time, 22% (n = 26/120 individuals) of Red Drum were oligohaline residents (≥ 90% of these years spent in oligohaline salinities), 34% (n = 41) were meso-polyhaline residents (< 10% of years 2 and 3 spent in oligohaline waters), and 44% (n = 53) spent time in both oligohaline and meso-polyhaline salinities. Trends in oligohaline residency match putative Red Drum life history. Oligohaline residents were present during years 1–6 of life; however, oligohaline residency peaked during the second year of life (n = 37, 31%) and by year 7 no oligohaline residents remained. Growth of oligohaline resident Red Drum during years 2–3 of life was lower than non-resident fish. However, long-term growth consequences of oligohaline residency were not apparent. The proportion of oligohaline residents during years 2 or 3 of life was positively related to river discharge. This divergence in salinity residency by juvenile Red Drum demonstrates that life history diversity was present in this population and that oligohaline waters provided important nursery habitat for fish that successfully recruited to the adult population.

虽然众所周知，红鼓（Sciaenops ocellatus）栖息在盐度低下的海水中（盐度<5），但盐碱史的终生重建工作仍然缺乏，并且这项研究提供了对这种经济上有价值的鲑鱼的年际和个体发生的盐度低下的模式的独特见解。还研究了低盐度暴露的生长后果以及低盐度居住与河流排放的关系。在生命的第2年和第3年，寡盐酸盐的暴露变化最大。在此期间， Red Drum的22％（n = 26/120个人）是寡盐碱盐矿居民（≥90％的这些年用于寡盐碱盐度），34％（n = 41）是 中度-多盐度居民（<2年和3年中的10％花费在低盐度水域中），44％（n = 53）的时间花在低度盐度和中度-多度盐度中。少盐碱居住的趋势与假定的红鼓生活史相吻合。1至6岁时出现了低盐居民。但是，少盐碱居住期在生命的第二年达到顶峰（n = 37，占31％），到第7年，仍没有寡盐碱的居民。在生活的2-3年中，少盐碱生红鼓的生长低于非定居鱼类。然而，少盐碱居住的长期增长后果并不明显。生命的第2年或第3年中，低盐度居民的比例与河流流量呈正相关。幼年红鼓在盐度居所上的这种差异表明，该种群中存在着生活史的多样性，而寡盐海水为成功地招募到成年种群的鱼类提供了重要的苗圃栖息地。