Control mechanisms of diel vertical migration: Theoretical assumptions
文献类型：期刊论文
| 作者 | Han, BP; Straskraba, M |
| 刊名 | JOURNAL OF THEORETICAL BIOLOGY
 |
| 出版日期 | 2001-06-07 |
| 卷号 | 210期号:3页码:305-318 |
| 关键词 | Predator-avoidance Food Availability Planktonic Copepod Calanus-pacificus Lake Maarsseveen Daphnia-hyalina Zooplankton Behavior Temperature Fish |
| ISSN号 | 0022-5193 |
| DOI | 10.1006/jtbi.2001.2307 |
| 文献子类 | Article |
| 英文摘要 | We explore control mechanisms underlying the vertical migration of zooplankton in the water column under the predator-avoidance hypothesis. Two groups of assumptions in which the organisms are assumed to migrate vertically in order to minimize realized or effective predation pressure (type-I) and to minimize changes in realized or effective predation pressure (type-II), respectively, are investigated. Realized predation pressure is defined as the product of light intensity and relative predation abundance and the part of realized predation pressure that really affects organisms is termed as effective predation pressure. Although both types of assumptions can lead to the migration of zooplankton to avoid the mortality from predators, only the mechanisms based on type-II assumptions permit zooplankton to undergo a normal diel vertical migration (morning descent and evening ascent). The assumption of minimizing changes in realized predation pressure is based on consideration of DVM induction only by light intensity and predators. The assumption of minimizing changes in effective predation pressure takes into account, apart from light and predators also the effects of food and temperature. The latter assumption results in the same expression of migration velocity as the former one when both food and temperature are constant over water depth. A significant characteristic of the two type-II assumptions is that the relative change in light intensity plays a primary role in determining the migration velocity. The photoresponse is modified by other environmental variables: predation pressure, food and temperature. Both light and predation pressure are necessary for organisms to undertake DVM. We analyse the effect of each single variable. The modification of the phototaxis of migratory organisms depends on the vertical distribution of these variables. (C) 2001 Academic Press.; We explore control mechanisms underlying the vertical migration of zooplankton in the water column under the predator-avoidance hypothesis. Two groups of assumptions in which the organisms are assumed to migrate vertically in order to minimize realized or effective predation pressure (type-I) and to minimize changes in realized or effective predation pressure (type-II), respectively, are investigated. Realized predation pressure is defined as the product of light intensity and relative predation abundance and the part of realized predation pressure that really affects organisms is termed as effective predation pressure. Although both types of assumptions can lead to the migration of zooplankton to avoid the mortality from predators, only the mechanisms based on type-II assumptions permit zooplankton to undergo a normal diel vertical migration (morning descent and evening ascent). The assumption of minimizing changes in realized predation pressure is based on consideration of DVM induction only by light intensity and predators. The assumption of minimizing changes in effective predation pressure takes into account, apart from light and predators also the effects of food and temperature. The latter assumption results in the same expression of migration velocity as the former one when both food and temperature are constant over water depth. A significant characteristic of the two type-II assumptions is that the relative change in light intensity plays a primary role in determining the migration velocity. The photoresponse is modified by other environmental variables: predation pressure, food and temperature. Both light and predation pressure are necessary for organisms to undertake DVM. We analyse the effect of each single variable. The modification of the phototaxis of migratory organisms depends on the vertical distribution of these variables. (C) 2001 Academic Press. |
| 学科主题 | Biology ; Mathematical & Computational Biology |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000169584400003 |
| 公开日期 | 2010-12-22 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/2827]  |
| 专题 | 海洋研究所_海洋生态与环境科学重点实验室 |
| 作者单位 | 1.Jinan Univ, Inst Hydrobiol, Guangzhou 510632, Peoples R China 2.Chinese Acad Sci, Inst Oceanog, Qingdao 266071, Peoples R China 3.Acad Sci Czech Republic, Biomath Lab, Ceske Budejovice 37005, Czech Republic 4.Univ S Bohemia, Fac Biol, Ceske Budejovice 37005, Czech Republic |
| 推荐引用方式 GB/T 7714 | Han, BP,Straskraba, M. Control mechanisms of diel vertical migration: Theoretical assumptions[J]. JOURNAL OF THEORETICAL BIOLOGY,2001,210(3):305-318. |
| APA | Han, BP,&Straskraba, M.(2001).Control mechanisms of diel vertical migration: Theoretical assumptions.JOURNAL OF THEORETICAL BIOLOGY,210(3),305-318. |
| MLA | Han, BP,et al."Control mechanisms of diel vertical migration: Theoretical assumptions".JOURNAL OF THEORETICAL BIOLOGY 210.3(2001):305-318. |
入库方式： OAI收割
来源：海洋研究所
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