Effects of variability in food quantity and quality on the feeding, growth, and condition of larval fish under natural field conditions.
自然田间条件下食物数量和质量的变化对幼鱼摄食、生长和状况的影响。
基本信息
- 批准号:216861-2013
- 负责人:
- 金额:$ 1.97万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Discovery Grants Program - Individual
- 财政年份:2014
- 资助国家:加拿大
- 起止时间:2014-01-01 至 2015-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
It has long been believed that the amount of food encountered by larval fish determines their survival in the ocean, and that year-to-year variations in the amount of food available thus lead to year-to-year variations in year-class strength in fish populations. Although supported by lab experiments, convincing evidence for this relationship under field conditions is surprisingly rare. Recently, research has shown that variations in food quality (as opposed to quantity) may also play a significant role in the growth and survival of plankton. However, very little is currently known about whether natural variations in food quality also affect the growth and survival of larval fish. This project aims to test this possibility by conducting field work that will compare the effects of food availability and food quality on the growth rates of larval fish and on various measures of their "condition", or health, under natural conditions. We will also explore the extent to which larval fish may feed upon protozoans - a group of tiny soft-bodied plankton that are not usually considered in studies of larval fish feeding (as they are rapidly digested and hard to identify), but which may be an important prey source nonetheless. Research will be conducted in coastal Newfoundland and in the Strait of Georgia.
长期以来,人们一直认为,幼鱼所遇到的食物量决定了它们在海洋中的生存,每年可获得的食物量的变化导致鱼类种群的年级强度的变化。 虽然实验室实验支持,令人信服的证据,这种关系在现场条件下是令人惊讶的罕见。 最近的研究表明,食物质量(而不是数量)的变化也可能对浮游生物的生长和生存起着重要作用。 然而,目前对食物质量的自然变化是否也影响仔鱼的生长和存活知之甚少。 该项目旨在通过实地工作来检验这种可能性,实地工作将比较食物供应和食物质量对仔鱼生长率的影响以及对自然条件下仔鱼“状况”或健康的各种衡量标准的影响。 我们还将探索幼鱼可能以原生动物为食的程度-一组微小的软体浮游生物,通常不会在幼鱼摄食研究中考虑(因为它们被迅速消化且难以识别),但这可能是一个重要的猎物来源。 研究将在纽芬兰沿海和格鲁吉亚海峡进行。
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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Dower, John其他文献
Dower, John的其他文献
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{{ truncateString('Dower, John', 18)}}的其他基金
Quantifying and partitioning spatiotemporal variability in secondary production and trophic transfer efficiency in pelagic marine ecosystems
量化和划分中上层海洋生态系统二次生产和营养转移效率的时空变化
- 批准号:
RGPIN-2020-07077 - 财政年份:2022
- 资助金额:
$ 1.97万 - 项目类别:
Discovery Grants Program - Individual
Quantifying and partitioning spatiotemporal variability in secondary production and trophic transfer efficiency in pelagic marine ecosystems
量化和划分中上层海洋生态系统二次生产和营养转移效率的时空变化
- 批准号:
RGPIN-2020-07077 - 财政年份:2021
- 资助金额:
$ 1.97万 - 项目类别:
Discovery Grants Program - Individual
Quantifying and partitioning spatiotemporal variability in secondary production and trophic transfer efficiency in pelagic marine ecosystems
量化和划分中上层海洋生态系统二次生产和营养转移效率的时空变化
- 批准号:
RGPIN-2020-07077 - 财政年份:2020
- 资助金额:
$ 1.97万 - 项目类别:
Discovery Grants Program - Individual
Effects of variability in food quantity and quality on the feeding, growth, and condition of larval fish under natural field conditions.
自然田间条件下食物数量和质量的变化对幼鱼摄食、生长和状况的影响。
- 批准号:
216861-2013 - 财政年份:2019
- 资助金额:
$ 1.97万 - 项目类别:
Discovery Grants Program - Individual
Effects of variability in food quantity and quality on the feeding, growth, and condition of larval fish under natural field conditions.
自然田间条件下食物数量和质量的变化对幼鱼摄食、生长和状况的影响。
- 批准号:
216861-2013 - 财政年份:2015
- 资助金额:
$ 1.97万 - 项目类别:
Discovery Grants Program - Individual
Effects of variability in food quantity and quality on the feeding, growth, and condition of larval fish under natural field conditions.
自然田间条件下食物数量和质量的变化对幼鱼摄食、生长和状况的影响。
- 批准号:
216861-2013 - 财政年份:2013
- 资助金额:
$ 1.97万 - 项目类别:
Discovery Grants Program - Individual
Quantifying the effects of variability in food quality on secondary production in marine ecosystems
量化食品质量变异对海洋生态系统二次生产的影响
- 批准号:
216861-2008 - 财政年份:2012
- 资助金额:
$ 1.97万 - 项目类别:
Discovery Grants Program - Individual
Quantifying the effect of variability in food quality on energy transfer and secondary production in a coastal marine food web
量化食品质量变异对沿海海洋食物网能量转移和二次生产的影响
- 批准号:
403547-2011 - 财政年份:2011
- 资助金额:
$ 1.97万 - 项目类别:
Discovery Grants Program - Ship Time
Quantifying the effects of variability in food quality on secondary production in marine ecosystems
量化食品质量变异对海洋生态系统二次生产的影响
- 批准号:
216861-2008 - 财政年份:2011
- 资助金额:
$ 1.97万 - 项目类别:
Discovery Grants Program - Individual
Quantifying the effects of variability in food quality on secondary production in marine ecosystems
量化食品质量变异对海洋生态系统二次生产的影响
- 批准号:
216861-2008 - 财政年份:2010
- 资助金额:
$ 1.97万 - 项目类别:
Discovery Grants Program - Individual
相似国自然基金
Accretion variability and its consequences: from protostars to planet-forming disks
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Effects of variability in food quantity and quality on the feeding, growth, and condition of larval fish under natural field conditions.
自然田间条件下食物数量和质量的变化对幼鱼摄食、生长和状况的影响。
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Effects of variability in food quantity and quality on the feeding, growth, and condition of larval fish under natural field conditions.
自然田间条件下食物数量和质量的变化对幼鱼摄食、生长和状况的影响。
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Effects of variability in food quantity and quality on the feeding, growth, and condition of larval fish under natural field conditions.
自然田间条件下食物数量和质量的变化对幼鱼摄食、生长和状况的影响。
- 批准号:
216861-2013 - 财政年份:2013
- 资助金额:
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Quantifying the effects of variability in food quality on secondary production in marine ecosystems
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$ 1.97万 - 项目类别:
Discovery Grants Program - Individual
Quantifying the effects of variability in food quality on secondary production in marine ecosystems
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216861-2008 - 财政年份:2011
- 资助金额:
$ 1.97万 - 项目类别:
Discovery Grants Program - Individual
Quantifying the effects of variability in food quality on secondary production in marine ecosystems
量化食品质量变异对海洋生态系统二次生产的影响
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216861-2008 - 财政年份:2010
- 资助金额:
$ 1.97万 - 项目类别:
Discovery Grants Program - Individual
Quantifying the effects of variability in food quality on secondary production in marine ecosystems
量化食品质量变异对海洋生态系统二次生产的影响
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216861-2008 - 财政年份:2009
- 资助金额:
$ 1.97万 - 项目类别:
Discovery Grants Program - Individual