Sebastes nigrocinctus Genome sequencing and assembly. Sebastes nigrocinctus

The tiger rockfish Sebastes nigrocinctus is a member of a marine fishes species flock with an estimated 102 species native to the west coast of North America. Rockfishes of the genus Sebastes support important commercial and recreational fisheries on the west coast of North America and are the dominant assemblage on most cold temperate reefs. These live-bearers have a low intrinsic rate of population increase and highly sporadic recruitment, releasing large numbers of pelagic larvae into a variable coastal environment. Their slow growth rates render them vulnerable to overfishing. Uncertainty in the success of any particular year class has favored an evolutionary strategy whereby some species of the Sebastes genus have extremely long lifespans and do not show signs of aging (negligible senescence), while others demonstrate typical aging patterns and have short lifespans. S. nigrocinctus has a maximum lifespan of at least 116 years, but it is closely related to S. rubvrivinctus, which has a maximum age of only 18 years.

虎纹岩鱼（Sebastes nigrocinctus）是一类海洋鱼类物种辐射群的成员，据估算该类群拥有102个原产于北美西海岸的物种。平鲉属（Sebastes）岩鱼支撑了北美西海岸重要的商业与休闲渔业，同时也是多数寒温带礁体生境中的优势类群。这类胎生鱼类的种群内禀增长率较低，种群补充量极不稳定，会向多变的近岸海洋环境中释放大量浮游幼体。它们生长速度缓慢，因此极易遭受过度捕捞的威胁。任意单一同龄群的存活成功率均存在较高不确定性，这促使平鲉属演化出两种截然不同的生存策略：部分平鲉物种拥有极长的寿命且未表现出衰老迹象（可忽略性衰老，negligible senescence），而其余物种则呈现典型的衰老模式且寿命较短。虎纹岩鱼的最大寿命至少可达116年，但它与红带平鲉（Sebastes rubrivinctus）亲缘关系密切，而后者的最大年龄仅为18年。