Size-structured risk assessments govern Daphnia migration.
Hansson, Lars-Anders LU
and Hylander, Samuel
LU
(2009)
In Royal Society of London. Proceedings B. Biological Sciences
276(1655).
p.331-336
- Abstract
- One of the more fascinating phenomena in nature is animal mass migrations and in oceans and freshwaters, diel variations in depth distribution of zooplankton are a phenomenon that has intrigued scientists for more than a century. In our study, we show that zooplankton are able to assess the threat level of ultraviolet radiation and adjust their depth distribution to this level at a very fine tuned scale. Moreover, predation risk induces a size-structured depth separation, such that small individuals, which we show are less vulnerable to predation than larger, make a risk assessment and continue feeding in surface waters during day, offering a competitive release from down-migrating larger animals. Hence, we mechanistically show that such... (More)
- One of the more fascinating phenomena in nature is animal mass migrations and in oceans and freshwaters, diel variations in depth distribution of zooplankton are a phenomenon that has intrigued scientists for more than a century. In our study, we show that zooplankton are able to assess the threat level of ultraviolet radiation and adjust their depth distribution to this level at a very fine tuned scale. Moreover, predation risk induces a size-structured depth separation, such that small individuals, which we show are less vulnerable to predation than larger, make a risk assessment and continue feeding in surface waters during day, offering a competitive release from down-migrating larger animals. Hence, we mechanistically show that such simple organisms as invertebrate zooplankton are able to make individual, size-specific decisions regarding how to compromise between threats from both predators and UV radiation, and adjust their diel migratory patterns accordingly. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1242697
- author
- Hansson, Lars-Anders
LU
and Hylander, Samuel
LU
- organization
- publishing date
- 2009
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- ultraviolet radiation, Daphnia, zooplankton, migration, risk, predation
- in
- Royal Society of London. Proceedings B. Biological Sciences
- volume
- 276
- issue
- 1655
- pages
- 331 - 336
- publisher
- Royal Society Publishing
- external identifiers
-
- wos:000262005200018
- scopus:58149242623
- pmid:18812291
- ISSN
- 1471-2954
- DOI
- 10.1098/rspb.2008.1088
- language
- English
- LU publication?
- yes
- id
- 172f90c1-f8d2-4af1-b32e-bbb8b031a344 (old id 1242697)
- date added to LUP
- 2016-04-01 14:41:35
- date last changed
- 2024-03-27 22:10:28
@article{172f90c1-f8d2-4af1-b32e-bbb8b031a344,
abstract = {{One of the more fascinating phenomena in nature is animal mass migrations and in oceans and freshwaters, diel variations in depth distribution of zooplankton are a phenomenon that has intrigued scientists for more than a century. In our study, we show that zooplankton are able to assess the threat level of ultraviolet radiation and adjust their depth distribution to this level at a very fine tuned scale. Moreover, predation risk induces a size-structured depth separation, such that small individuals, which we show are less vulnerable to predation than larger, make a risk assessment and continue feeding in surface waters during day, offering a competitive release from down-migrating larger animals. Hence, we mechanistically show that such simple organisms as invertebrate zooplankton are able to make individual, size-specific decisions regarding how to compromise between threats from both predators and UV radiation, and adjust their diel migratory patterns accordingly.}},
author = {{Hansson, Lars-Anders and Hylander, Samuel}},
issn = {{1471-2954}},
keywords = {{ultraviolet radiation; Daphnia; zooplankton; migration; risk; predation}},
language = {{eng}},
number = {{1655}},
pages = {{331--336}},
publisher = {{Royal Society Publishing}},
series = {{Royal Society of London. Proceedings B. Biological Sciences}},
title = {{Size-structured risk assessments govern Daphnia migration.}},
url = {{http://dx.doi.org/10.1098/rspb.2008.1088}},
doi = {{10.1098/rspb.2008.1088}},
volume = {{276}},
year = {{2009}},
}