SGER: Using ICP-MS to Detect Sources of Recruitment in Marine Fishes

海洋生物的生物地理学和种群生态学研究结果表明，幼虫的运输和招募是决定成虫种群分布和持久性的重要过程。然而，由于我们无法确定海洋幼虫的来源和随后的扩散模式，我们对这些过程的理解受到严重限制。沃纳博士假设，潜在来源种群之间的水化学空间差异，包括同位素比率和元素浓度，可以用来区分幼虫在种群之间滞留和分散所导致的招募事件。如果幼虫永久地记录下它们的原产地的环境特征，这是可以实现的。他将通过比较新定居新兵的耳石化学成分与来自不同化学环境的成年居民的耳石化学成分来验证这一假设。＊＊＊

Warner 9615516 Results of studies on biogeography and population ecology of marine organisms suggest that larval transport and recruitment are important process in determining the distribution and persistence of adult populations. Our understanding of these processes, however, is severely limited by our inability to determine the sources and subsequent dispersal patterns of marine larvae. Dr. Warner hypothesizes that spatial variation in water chemistry among potential source populations, both in terms of isotopic ratios and elemental concentrations, can be used to discriminate between recruitment events resulting from larval retention versus dispersal between populations. This can be achieved if larvae permanently record the environmental signature of their location of origin. He will test this hypothesis by comparing the otolith chemical composition of newly settled recruits to resident adults from populations with different chemical environments. ***