Homeostatic swimming of zooplankton upon crowding : The case of the copepod Centropages typicus
Uttieri, Marco ; Hinow, Peter ; Pastore, Raffaele ; Bianco, Giuseppe LU
; Ribera D'Alcalá, Maurizio
and Mazzocchi, Maria Grazia
(2021)
In Journal of the Royal Society Interface
18(179).
- Abstract
Crowding has a major impact on the dynamics of many material and biological systems, inducing effects as diverse as glassy dynamics and swarming. While this issue has been deeply investigated for a variety of living organisms, more research remains to be done on the effect of crowding on the behaviour of copepods, the most abundant metazoans on Earth. To this aim, we experimentally investigate the swimming behaviour, used as a dynamic proxy of animal adaptations, of males and females of the calanoid copepod Centropages typicus at different densities of individuals (10, 50 and 100 ind. l -1) by performing three-dimensional single-organism tracking. We find that the C. typicus motion is surprisingly unaffected by crowding over the... (More)
Crowding has a major impact on the dynamics of many material and biological systems, inducing effects as diverse as glassy dynamics and swarming. While this issue has been deeply investigated for a variety of living organisms, more research remains to be done on the effect of crowding on the behaviour of copepods, the most abundant metazoans on Earth. To this aim, we experimentally investigate the swimming behaviour, used as a dynamic proxy of animal adaptations, of males and females of the calanoid copepod Centropages typicus at different densities of individuals (10, 50 and 100 ind. l -1) by performing three-dimensional single-organism tracking. We find that the C. typicus motion is surprisingly unaffected by crowding over the investigated density range. Indeed, the mean square displacements as a function of time always show a crossover from ballistic to Fickian regime, with poor variations of the diffusion constant on increasing the density. Close to the crossover, the displacement distributions display exponential tails with a nearly density-independent decay length. The trajectory fractal dimension, D 3D ≅ 1.5, and the recently proposed 'ecological temperature' also remain stable on increasing the individual density. This suggests that, at least over the range of animal densities used, crowding does not impact on the characteristics of C. typicus swimming motion, and that a homeostatic mechanism preserves the stability of its swimming performance.
(Less)
- author
- Uttieri, Marco
; Hinow, Peter
; Pastore, Raffaele
; Bianco, Giuseppe
LU
; Ribera D'Alcalá, Maurizio
and Mazzocchi, Maria Grazia
- organization
- publishing date
- 2021-06
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Centropages typicus, crowding, ecological temperature, fractal dimension, mean square displacement, random walk
- in
- Journal of the Royal Society Interface
- volume
- 18
- issue
- 179
- article number
- 20210270
- publisher
- The Royal Society of Canada
- external identifiers
-
- scopus:85109060440
- pmid:34157893
- ISSN
- 1742-5689
- DOI
- 10.1098/rsif.2021.0270
- language
- English
- LU publication?
- yes
- id
- 3035ed46-4ee7-47c8-b2ba-0a6cc22306d7
- date added to LUP
- 2021-08-16 15:24:43
- date last changed
- 2024-06-15 14:28:05
@article{3035ed46-4ee7-47c8-b2ba-0a6cc22306d7,
abstract = {{<p>Crowding has a major impact on the dynamics of many material and biological systems, inducing effects as diverse as glassy dynamics and swarming. While this issue has been deeply investigated for a variety of living organisms, more research remains to be done on the effect of crowding on the behaviour of copepods, the most abundant metazoans on Earth. To this aim, we experimentally investigate the swimming behaviour, used as a dynamic proxy of animal adaptations, of males and females of the calanoid copepod Centropages typicus at different densities of individuals (10, 50 and 100 ind. l -1) by performing three-dimensional single-organism tracking. We find that the C. typicus motion is surprisingly unaffected by crowding over the investigated density range. Indeed, the mean square displacements as a function of time always show a crossover from ballistic to Fickian regime, with poor variations of the diffusion constant on increasing the density. Close to the crossover, the displacement distributions display exponential tails with a nearly density-independent decay length. The trajectory fractal dimension, D 3D ≅ 1.5, and the recently proposed 'ecological temperature' also remain stable on increasing the individual density. This suggests that, at least over the range of animal densities used, crowding does not impact on the characteristics of C. typicus swimming motion, and that a homeostatic mechanism preserves the stability of its swimming performance. </p>}},
author = {{Uttieri, Marco and Hinow, Peter and Pastore, Raffaele and Bianco, Giuseppe and Ribera D'Alcalá, Maurizio and Mazzocchi, Maria Grazia}},
issn = {{1742-5689}},
keywords = {{Centropages typicus; crowding; ecological temperature; fractal dimension; mean square displacement; random walk}},
language = {{eng}},
number = {{179}},
publisher = {{The Royal Society of Canada}},
series = {{Journal of the Royal Society Interface}},
title = {{Homeostatic swimming of zooplankton upon crowding : The case of the copepod Centropages typicus}},
url = {{http://dx.doi.org/10.1098/rsif.2021.0270}},
doi = {{10.1098/rsif.2021.0270}},
volume = {{18}},
year = {{2021}},
}