IOS Proposal: RUI: Exploring range limits in the fiddler crab Uca pugnax using the Dynamic Energy Budget approach

IOS 提案：RUI：使用动态能量预算方法探索招潮蟹 Uca pugnax 的范围限制

基本信息

批准号：
1755335
负责人：
Renae Brodie
金额：
$ 30万
依托单位：
Mount Holyoke College
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2018
资助国家：
美国
起止时间：
2018-07-15 至 2023-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1755335&HistoricalAwards=false
关键词：
IOS Proposal RUI Exploring range

项目摘要

Marine intertidal invertebrates contend with daily cycles of submergence and exposure. As the planet warms, increases in both sea water and air temperature will impact the fitness of these fringe dwellers. This investigation uses Dynamic Energy Budget (DEB) modelling to investigate the impact of food availability and body temperature in both air and water on the energy budget of the mud fiddler crab, Uca pugnax, an abundant and impactful ecosystem engineer. In 2014 mud fiddler crabs appeared for the first time in the salt marshes of New Hampshire, 80 km north of its previous northern range limit, and it is expected to continue to spread north as the north Atlantic warms. This species will have a large impact on the ecosystems it invades because it forms dense colonies that often exceed 100 individuals/m2 and is an intense bioturbator and generalist consumer of infaunal prey. A model will be developed to predict the energetic trade-offs made by mud fiddler crabs under different food and body temperature conditions, which in turn impacts where it can survive and reproduce. This model will be useful for predicting future species ranges for mud fiddler crabs and other intertidal species under different warming scenarios.In the first year of this study, field and laboratory investigations will be conducted across the current species range to determine standard DEB budget parameters, including the shape coefficient, Arrhenias temperatures in air and water, ingestion and assimilation rates, maintenance costs, energy reserves, structural energy content, and the costs of growth. The model will be modified for bimodal breathing, a trait shared by thousands of species living at the sea-land interface, as well as some freshwater species, like lungfish and amphibians. Furthermore, a thermoregulatory correction factor will be developed for the model to explore the energetic costs caused by interruptions in feeding on very hot days when crabs retreat to burrows to avoid overheating. In the second and third years, the DEB model will be developed, tested and applied to questions about energetic constraints and tradeoffs under different environmental conditions and the implications of bimodal breathing for thermal tolerance. This grant will fund academic year and summer research opportunities, as well as, training in mathematical biology for 6-8 undergraduates for each year of the grant from Mount Holyoke College, a primarily undergraduate institution serving women.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

海洋潮间带无脊椎动物与每日浸没和暴露的周期抗衡。随着行星的变暖，海水和空气温度的升高将影响这些边缘居民的适应性。这项调查使用动态能源预算（DEB）建模来研究粮食和水中粮食供应和体温对泥弹奏蟹的能量预算的影响，UCA Pugnax是一位丰富而有影响力的生态系统工程师。 2014年，泥泞的提琴手螃蟹首次出现在新罕布什尔州的盐沼中，位于其先前北部范围限制以北80公里处，预计随着北大西洋的温暖，它将继续散布北部。该物种将对入侵的生态系统产生很大的影响，因为它形成了通常超过100个个体/m2的密集菌落，并且是Infaunal猎物的强烈生物扰动者和通才消费者。将开发一个模型，以预测在不同的食物和体温条件下泥弹药蟹进行的能量折衷，这又影响了它可以生存和繁殖的地方。该模型将有助于预测不同变暖方案下的泥弹奏螃蟹和其他潮间带物种的未来物种范围。在这项研究的第一年中，将在当前物种范围内进行现场和实验室研究，以确定标准的DEB预算参数，即包括形状系数，空气和水中的Arrhenias温度，摄入和同化率，维护成本，能源储备，结构能量含量以及增长成本。该模型将用于双峰呼吸，这是数千种生活在海洋界面上的物种以及一些淡水物种（如肺鱼和两栖动物）的特征。此外，该模型将开发一个温度调节校正因子，以探索蟹倒回到洞穴以避免过热时，在非常炎热的日子里喂食时会导致的能量成本。在第二年和第三年中，将开发，测试和应用DEB模型，并将其应用于不同环境条件下的能量约束和权衡问题，以及双峰呼吸对热耐受性的影响。该赠款将资助学年和夏季的研究机会，以及在霍利奥克山学院的每一年中为6-8个本科生的数学生物学培训提供资金，这是一个主要为妇女提供服务的本科机构。这项奖项反映了NSF的法定任务，并且已有。使用基金会的知识分子优点和更广泛的审查标准，被认为值得通过评估来支持。