Biochemical Composition and Energy Reserves in Larvae of Deep-sea Crabs Chaceon spp. in Relation to Maternal Nutrition History

拟议的规划活动将调查有关在半深海蟹早期发育过程中使用的积极策略的基本问题。需要解决的具体问题包括：1)。不同的脂肪类、蛋白质和碳水化合物对深海红蟹胚胎发育的营养需求有何贡献；母体营养史和发生深度(或温度)对红蟹胚胎卵黄利用模式有何贡献？我的初步工作表明，这个物种在胚胎发育过程中表现出两种不同的卵黄成分和利用模式。这项拟议的规划活动旨在确定导致观察到的差异的因素，并将作为更详细的比较研究红蟹和金蟹两种半深海蟹胚胎营养弹性的基础，这两种蟹具有不同的地理和水深分布。

The proposed planning activities will investigate fundamental questions concerning the energetic strategies utilized during early development of bathyal crabs. Specific questions to be addressed include: 1). what are the contributions of different lipid classes, protein, and carbohydrate toward nutritional requirements during embryonic development of the deep-sea red crab Chaceon quinquedens; and 2). what are the contributions of maternal nutritional history and depth (or temperature) of occurrence to the patterns of yolk utilization in red crab embryos. My preliminary work demonstrates that this species exhibits two different patterns of yolk composition and utilization during embryogenesis. This proposed planning activities are designed to determine the factors responsible for the observed variation and will be used as the basis for a more detailed comparative study on embryonic nutritional flexibility in two species of bathyal crabs, red crab and golden crab C. fenneri, which have different geographic and bathymetric distributions.