Reproductive Allocation of Specific Nutrients: The Effects of Foraging, Life History, and Flight
特定营养物质的生殖分配:觅食、生活史和飞行的影响
基本信息
- 批准号:9983044
- 负责人:
- 金额:$ 22.65万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2000
- 资助国家:美国
- 起止时间:2000-01-01 至 2002-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Many organisms, including butterflies and some other insects, have very different larval and adult life stages. Many aspects of the life style, including food sources, differ between these life stages. Species differ in the quality and quantity of adult food available to them, resulting in differences among species in the relative importance of adult and larval food in egg production and adult survival, or life history traits. These patterns of importance of nutrients from different life stages determine the timing of egg production, and the nutrient make-up of the egg. Our work on nutrient allocation to eggs from larval and adult sources is aimed at understanding the constraints on possible combinations of feeding and reproductive habits, as well as the likely persistence of species in different environments.We will use natural variation in stable carbon isotope ratios of food sources as a tool for tracing the origin of nutrients used to make eggs. We will address three hypotheses. The first addresses how allocation varies among six species of Lepidoptera that differ naturally in availability and quality of adult food. We will determine if the source of nutrients allocated to reproduction (i.e., larval food vs. adult food) varies with adult feeding ecology. The second hypothesis concerns the chemical identity of the two nutrient pools. This information allows us to understand the physiological mechanisms governing the relative use of larval and adult dietary nutrients in eggs. The third hypothesis explores how ecological factors, namely variation in nectar availability and time spent in flight, may affect allocation patterns within a species. Individuals of one species will be kept under varying conditions of food availability, and will be induced to fly for varying lengths of time daily. Stable carbon isotope composition of eggs from these individuals will be analyzed to yield understand how allocation to reproduction interacts with feeding conditions and flight expenditure. This experiment allows the extrapolation of our results to a field setting.The results of our proposed work will provide information on the relationships among nutritional ecology, energy metabolism, and reproduction. This information has particular practical value for butterflies and other insects, many species of which are threatened or are important indicators in conservation biology. More generally, however, the proposed research will provide an important conceptual and empirical foundation for further work on both nutrient dynamics and the evolution of life histories.
许多生物,包括蝴蝶和其他一些昆虫,有非常不同的幼虫和成虫生命阶段。生活方式的许多方面,包括食物来源,在这些生命阶段之间是不同的。不同的物种在质量和数量的成人食物提供给他们,导致不同的物种在相对重要性的成人和幼虫的食物在产卵和成人的生存,或生活史特征。这些来自不同生命阶段的营养素的重要性模式决定了鸡蛋生产的时间和鸡蛋的营养成分。我们的工作是从幼虫和成虫来源的营养分配到鸡蛋,目的是了解可能的摄食和繁殖习惯的组合的限制,以及物种在不同环境中的可能持久性。我们将利用食物来源的稳定碳同位素比率的自然变化作为追踪用于制作鸡蛋的营养来源的工具。 我们将讨论三个假设。第一个地址如何分配不同的六种鳞翅目成虫食物的可用性和质量自然不同。 我们将确定分配给繁殖的营养物质来源(即,幼虫食物与成虫食物)随成虫摄食生态而变化。第二个假设涉及两个营养库的化学特性。这一信息使我们能够了解的生理机制,管理相对使用的幼虫和成人的饮食营养的鸡蛋。第三个假设探讨了生态因素,即花蜜的可用性和飞行时间的变化,可能会影响一个物种内的分配模式。一个物种的个体将被保持在不同的食物供应条件下,并将被诱导每天飞行不同的时间长度。 将分析这些个体卵的稳定碳同位素组成,以了解生殖分配如何与饲养条件和飞行费用相互作用。 本实验允许我们的结果外推到一个领域的设置。我们提出的工作的结果将提供营养生态学,能量代谢和繁殖之间的关系的信息。这一信息对蝴蝶和其他昆虫具有特别的实用价值,其中许多物种受到威胁,或者是保护生物学的重要指标。然而,更一般地说,拟议的研究将为营养动态和生活史进化的进一步工作提供重要的概念和经验基础。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Carol Boggs其他文献
Carol Boggs的其他文献
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{{ truncateString('Carol Boggs', 18)}}的其他基金
Integrating physiological and behavioral ecology: How limited resources and allocation trade-offs impact mate signaling
整合生理和行为生态学:有限的资源和分配权衡如何影响配偶信号
- 批准号:
2335882 - 财政年份:2024
- 资助金额:
$ 22.65万 - 项目类别:
Standard Grant
Allocation, life history and senescence: an integrated approach
分配、生活史和衰老:综合方法
- 批准号:
1343671 - 财政年份:2013
- 资助金额:
$ 22.65万 - 项目类别:
Continuing Grant
Allocation, life history and senescence: an integrated approach
分配、生活史和衰老:综合方法
- 批准号:
0923411 - 财政年份:2009
- 资助金额:
$ 22.65万 - 项目类别:
Continuing Grant
International Research in El Salvador: Dissertation Enhancement: Climate, ecophysiology, and evolution in a tropical butterfly (Chlosyne lacinia)
萨尔瓦多国际研究:论文强化:热带蝴蝶(Chlosyne lacinia)的气候、生态生理学和进化
- 批准号:
0832204 - 财政年份:2008
- 资助金额:
$ 22.65万 - 项目类别:
Standard Grant
The Third International Butterfly Ecology and Evolution Symposium: Butterflies as Model Systems, to be held in Mt. Crested Butte, CO, on August 15-19, 1998
第三届国际蝴蝶生态学与进化研讨会:蝴蝶作为模型系统,将于 1998 年 8 月 15 日至 19 日在科罗拉多州克雷斯特德比特山举行
- 批准号:
9810654 - 财政年份:1998
- 资助金额:
$ 22.65万 - 项目类别:
Standard Grant
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