For example, spiny dogfish is partly substituting for cod in many European fish-and-chip shops. Sharks, too, are suffering from rapidly rising demand for shark-fin soup, which is considered a delicacy in many parts of Asia.
它们种群数量的下降与对曾经常见物种的过度捕捞息息相关。 比如刺狗鲨正在部分替代鳕鱼被端上许多欧洲鱼和薯条店的餐桌。 而鲨鱼也成为对鱼翅汤快速增长需求的牺牲品，鱼翅在亚洲许多国家被人们视为美味佳肴。