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估算鱼类种群数量的方法很多,其中鱼卵和仔鱼也可用来作为评估成体种群数量的指标。许多海洋鱼类的卵和仔鱼都是浮游性的,只需用简单的浮游生物网就可进行采样。采样用的调查船无需特殊要求,设备简单,花费较少。并且,使用仔鱼指标估算出的种群数量较为可靠。由于具有这些优点,所以使用鱼卵和仔鱼来评估种群数量的方法开始受到重视。
There are many ways to estimate the number of fish stocks, of which eggs and larvae can also be used as indicators to assess the number of adult stocks. Many marine fish eggs and larvae are planktonic and can be sampled using simple plankton nets. The sampling vessel used for the survey requires no special requirements. The equipment is simple and cost less. Moreover, the population estimates using larval indicators are more reliable. Because of these advantages, methods of using fish eggs and larvae to assess population numbers are beginning to gain attention.