The Role of Larval Nutritional History In Post-Settlement, Early Juvenile Performance (growth & survivorship) of Benthic Marine Invertebrates

小行星9416590 这项研究将提供一种实验室操作和实地实验相结合的方法，以检查底栖海洋无脊椎动物生命周期中两个最不了解的组成部分：幼虫和幼虫之间的生态和进化联系。 工作将检查幼虫营养对少年的表现在外地，招聘生物学的研究中忽略了一个功能的影响。 招募生物学的研究目前集中在幼虫的供应，这项研究将显示是否有必要考虑幼虫的条件及其对少年表现的影响，以解释控制底栖动物种群的幼虫输入。 幼虫将在实验室中以接近沿海海洋条件的培养藻类口粮喂养。 通过对一系列具有不同生活模式（固着的、移动的）和不同营养模式（悬浮饲养者、食草动物、捕食者）的无脊椎动物进行实验，这项工作确定了对少年表现的影响是否广泛适用。 该项目提供了长期假设的（生存）优势，更大的能量储存和更大的尺寸在变态的海洋无脊椎动物的生活史进化的大多数口头和定量模型的基本组成部分的实地测试。 该方法得到加强，使用3种不同的发展模式（远洋摄食幼虫，远洋nonfeeding幼虫，和底栖包囊少年），在这将是可能的，以确定是否假设的优势容易适用于所有类型的发展包括。

9416590 Emlet This research will provide an approach with combined laboratory manipulation and field experimentation for examining ecological and evolutionary connections between the two least understood components of the life cycles of benthic marine invertebrates: larvae and juveniles. Work will examine the effect of larval nutrition on juvenile performance in the field, a feature ignored in the studies of recruitment biology. Studies on recruitment biology are currently focused on larval supply, and this research will show whether there is a need to consider larval condition and its influence on juvenile performance to explain control of benthic populations by larval input. Larvae will be fed in the lab on cultured algal rations at levels approximating coastal oceanic conditions. By experimenting with an array of invertebrates with different modes of life (sessile, mobile) and different trophic modes (suspension feeders, herbivores, predators), the work determines whether effects on juvenile performance apply broadly. This project provide field tests of the long hypothesized (survival) advantages of greater energystores and larger size at metamorphosis which are basic components of most verbal and quantitative models of life history evolution of marine invertebrates. The approach is strengthened by the use of species with 3 different developmental patterns (pelagic feeding larvae, pelagic nonfeeding larvae, and benthic encapsulated juveniles), in that it will be possible to determine if the hypothesized advantages readily apply to all types of development included.