Energetics, cost reduction and functional consequences of fish morphology
Pettersson, Lars LU
and Hedenström, Anders
LU
(2000)
In Royal Society of London. Proceedings B. Biological Sciences
267(1445).
p.759-764
- Abstract
- Cost reduction strategies are often invoked as explanations when studies of adaptation fail to find predicted costs. This might seem discouraging, offering little opportunity for further investigation. In this paper, we demonstrate that cost reduction strategies can themselves be investigated by arguments from design. Recent work on inducible morphological defences has shown that hydrodynamical disadvantages (e.g. high drag) in fishes can be compensated for by standard metabolic rate (SMR) adjustments. Here, we theoretically investigate the possibilities and limitations for swimming cost compensation through SMR adjustment. We continue by modelling how intraspecific power curve variation affects the optimal swimming velocity between food... (More)
- Cost reduction strategies are often invoked as explanations when studies of adaptation fail to find predicted costs. This might seem discouraging, offering little opportunity for further investigation. In this paper, we demonstrate that cost reduction strategies can themselves be investigated by arguments from design. Recent work on inducible morphological defences has shown that hydrodynamical disadvantages (e.g. high drag) in fishes can be compensated for by standard metabolic rate (SMR) adjustments. Here, we theoretically investigate the possibilities and limitations for swimming cost compensation through SMR adjustment. We continue by modelling how intraspecific power curve variation affects the optimal swimming velocity between food patches. Our results show that, even though SMR modifications may compensate for hydrodynamical disadvantages, low-drag fishes will nevertheless have a marked advantage under high food abundance. The relative advantage will decrease with decreasing food levels. We also show that hydrodynamical properties of fishes can be used to predict their propensity to become foraging (or swimming) specialists. Low-drag fishes can use a broad range of swimming velocities without substantial increases in swimming cost, whereas the cost of deviating from the optimal swimming velocity increases markedly in high-drag fishes. The results have important implications for the evolution of morphological diversity in fishes. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/146036
- author
- Pettersson, Lars
LU
and Hedenström, Anders
LU
- organization
- publishing date
- 2000
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Royal Society of London. Proceedings B. Biological Sciences
- volume
- 267
- issue
- 1445
- pages
- 759 - 764
- publisher
- Royal Society Publishing
- external identifiers
-
- scopus:0034701488
- ISSN
- 1471-2954
- DOI
- 10.1098/rspb.2000.1068
- language
- English
- LU publication?
- yes
- id
- 3e1d202e-5047-4333-9f34-e7027be5175f (old id 146036)
- date added to LUP
- 2016-04-01 11:46:28
- date last changed
- 2024-01-07 19:58:05
@article{3e1d202e-5047-4333-9f34-e7027be5175f,
abstract = {{Cost reduction strategies are often invoked as explanations when studies of adaptation fail to find predicted costs. This might seem discouraging, offering little opportunity for further investigation. In this paper, we demonstrate that cost reduction strategies can themselves be investigated by arguments from design. Recent work on inducible morphological defences has shown that hydrodynamical disadvantages (e.g. high drag) in fishes can be compensated for by standard metabolic rate (SMR) adjustments. Here, we theoretically investigate the possibilities and limitations for swimming cost compensation through SMR adjustment. We continue by modelling how intraspecific power curve variation affects the optimal swimming velocity between food patches. Our results show that, even though SMR modifications may compensate for hydrodynamical disadvantages, low-drag fishes will nevertheless have a marked advantage under high food abundance. The relative advantage will decrease with decreasing food levels. We also show that hydrodynamical properties of fishes can be used to predict their propensity to become foraging (or swimming) specialists. Low-drag fishes can use a broad range of swimming velocities without substantial increases in swimming cost, whereas the cost of deviating from the optimal swimming velocity increases markedly in high-drag fishes. The results have important implications for the evolution of morphological diversity in fishes.}},
author = {{Pettersson, Lars and Hedenström, Anders}},
issn = {{1471-2954}},
language = {{eng}},
number = {{1445}},
pages = {{759--764}},
publisher = {{Royal Society Publishing}},
series = {{Royal Society of London. Proceedings B. Biological Sciences}},
title = {{Energetics, cost reduction and functional consequences of fish morphology}},
url = {{https://lup.lub.lu.se/search/files/2635718/625079.pdf}},
doi = {{10.1098/rspb.2000.1068}},
volume = {{267}},
year = {{2000}},
}