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Agbeti WEK, Palstra AP, Black S, Magnoni L, Lankheet M, Komen H. Swimming at Increasing Speeds in Steady and Unsteady Flows of Atlantic Salmon Salmo salar: Oxygen Consumption, Locomotory Behaviour and Overall Dynamic Body Acceleration. BIOLOGY 2024; 13:393. [PMID: 38927273 PMCID: PMC11200746 DOI: 10.3390/biology13060393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 05/24/2024] [Accepted: 05/27/2024] [Indexed: 06/28/2024]
Abstract
The swimming performance of cultured finfish species is typically studied under steady flow conditions. However, flow conditions are mostly unsteady, for instance, as experienced in sea pens in exposed sea areas. Using a Loligo swim tunnel, we investigated the effects of swimming in steady and unsteady flows at increasing swimming speeds on post-smolt Atlantic salmon. Oxygen consumption (MO2), locomotory behaviour, and overall dynamic body acceleration (ODBA), as determined with implanted acoustic sensor tags, were compared between both flow conditions. Results were obtained for mean swimming speeds of 0.2 to 0.8 m.s-1 under both flow conditions. Sensor tags that were implanted in the abdominal cavity had no significant effects on MO2 and locomotory parameters. The MO2 of fish swimming in unsteady flows was significantly higher (15-53%) than when swimming in steady flows (p < 0.05). Significant interaction effects of ODBA with flow conditions and swimming speed were found. ODBA was strongly and positively correlated with swimming speed and MO2 in unsteady flow (R2 = 0.94 and R2 = 0.93, respectively) and in steady flow (R2 = 0.91 and R2 = 0.82, respectively). ODBA predicts MO2 well over the investigated range of swimming speeds in both flow conditions. In an unsteady flow condition, ODBA increased twice as fast with MO2 compared with steady flow conditions (p < 0.05). From these results, we can conclude that (1) swimming in unsteady flow is energetically more costly for post-smolt Atlantic salmon than swimming in steady flow, as indicated by higher MO2, and (2) ODBA can be used to estimate the oxygen consumption of post-smolt Atlantic salmon in unsteady flow in swim tunnels.
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Affiliation(s)
- Wisdom E. K. Agbeti
- Animal Breeding and Genomics, Wageningen University & Research, 6700AH Wageningen, The Netherlands; (A.P.P.); (H.K.)
- Seafood Technologies, The New Zealand Institute for Plant and Food Research Limited, Nelson 7043, New Zealand; (S.B.); (L.M.)
| | - Arjan P. Palstra
- Animal Breeding and Genomics, Wageningen University & Research, 6700AH Wageningen, The Netherlands; (A.P.P.); (H.K.)
| | - Suzy Black
- Seafood Technologies, The New Zealand Institute for Plant and Food Research Limited, Nelson 7043, New Zealand; (S.B.); (L.M.)
| | - Leonardo Magnoni
- Seafood Technologies, The New Zealand Institute for Plant and Food Research Limited, Nelson 7043, New Zealand; (S.B.); (L.M.)
| | - Martin Lankheet
- Experimental Zoology Group, Wageningen University & Research, 6700AH Wageningen, The Netherlands;
| | - Hans Komen
- Animal Breeding and Genomics, Wageningen University & Research, 6700AH Wageningen, The Netherlands; (A.P.P.); (H.K.)
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Shokri M, Marrocco V, Cozzoli F, Vignes F, Basset A. The relative importance of metabolic rate and body size to space use behavior in aquatic invertebrates. Ecol Evol 2024; 14:e11253. [PMID: 38770126 PMCID: PMC11103644 DOI: 10.1002/ece3.11253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 03/22/2024] [Accepted: 03/27/2024] [Indexed: 05/22/2024] Open
Abstract
Elucidating the underlying mechanisms behind variations of animal space and resource use is crucial to pinpoint relevant ecological phenomena. Organism's traits related to its energy requirements might be central in explaining behavioral variation, as the ultimate goal of a forager is to fulfill its energy requirements. However, it has remained poorly understood how energy requirements and behavioral patterns are functionally connected. Here we aimed to assess how body mass and standard metabolic rate (SMR) influence behavioral patterns in terms of cumulative space use and time spent in an experimental patchy environment, both within species and among individuals irrespective of species identity. We measured the behavioral patterns and SMR of two invertebrate species, that is, amphipod Gammarus insensibilis, and isopod Lekanesphaera monodi, individually across a range of body masses. We found that species of G. insensibilis have higher SMR level, in addition to cumulatively exploring a larger space than L. monodi. Cumulative space use scaled allometrically with body mass, and it scaled isometrically with SMR in both species. While time spent similarly in both species was characterized by negative body mass and SMR dependence, it was observed that L. monodi individuals tended to stay longer in resource patches compared to G. insensibilis individuals. Our results further showed that within species, body mass and metabolic rate explained a similar amount of variation in behavior modes. However, among individuals, regardless of species identity, SMR had stronger predictive power for behavioral modes compared to body mass. This suggests that SMR might offer a more generalized and holistic description of behavioral patterns that extend beyond species identity. Our study on the metabolic and body mass scaling of space and resource use behavior sheds light on higher-order ecological processes such as species' competitive coexistence along the spatial and trophic dimensions.
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Affiliation(s)
- Milad Shokri
- Laboratory of Ecology, Department of Biological and Environmental Sciences and TechnologiesUniversity of SalentoLecceItaly
- National Biodiversity Future Center (NBFC)PalermoItaly
| | - Vanessa Marrocco
- Laboratory of Ecology, Department of Biological and Environmental Sciences and TechnologiesUniversity of SalentoLecceItaly
- LifeWatch ERIC, Service Centre, Campus EcotekneLecceItaly
| | - Francesco Cozzoli
- Laboratory of Ecology, Department of Biological and Environmental Sciences and TechnologiesUniversity of SalentoLecceItaly
- National Biodiversity Future Center (NBFC)PalermoItaly
- Research Institute on Terrestrial Ecosystems (IRET) – National Research Council of Italy (CNR) via SalariaMonterotondo Scalo (Rome)Italy
| | - Fabio Vignes
- Laboratory of Ecology, Department of Biological and Environmental Sciences and TechnologiesUniversity of SalentoLecceItaly
| | - Alberto Basset
- Laboratory of Ecology, Department of Biological and Environmental Sciences and TechnologiesUniversity of SalentoLecceItaly
- National Biodiversity Future Center (NBFC)PalermoItaly
- LifeWatch ERIC, Service Centre, Campus EcotekneLecceItaly
- Research Institute on Terrestrial Ecosystems (IRET) – National Research Council of Italy (CNR) via SalariaMonterotondo Scalo (Rome)Italy
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Glazier DS, Gjoni V. Interactive effects of intrinsic and extrinsic factors on metabolic rate. Philos Trans R Soc Lond B Biol Sci 2024; 379:20220489. [PMID: 38186280 PMCID: PMC10772614 DOI: 10.1098/rstb.2022.0489] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 08/16/2023] [Indexed: 01/09/2024] Open
Abstract
Metabolism energizes all biological processes, and its tempo may importantly influence the ecological success and evolutionary fitness of organisms. Therefore, understanding the broad variation in metabolic rate that exists across the living world is a fundamental challenge in biology. To further the development of a more reliable and holistic picture of the causes of this variation, we review several examples of how various intrinsic (biological) and extrinsic (environmental) factors (including body size, cell size, activity level, temperature, predation and other diverse genetic, cellular, morphological, physiological, behavioural and ecological influences) can interactively affect metabolic rate in synergistic or antagonistic ways. Most of the interactive effects that have been documented involve body size, temperature or both, but future research may reveal additional 'hub factors'. Our review highlights the complex, intimate inter-relationships between physiology and ecology, knowledge of which can shed light on various problems in both disciplines, including variation in physiological adaptations, life histories, ecological niches and various organism-environment interactions in ecosystems. We also discuss theoretical and practical implications of interactive effects on metabolic rate and provide suggestions for future research, including holistic system analyses at various hierarchical levels of organization that focus on interactive proximate (functional) and ultimate (evolutionary) causal networks. This article is part of the theme issue 'The evolutionary significance of variation in metabolic rates'.
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Affiliation(s)
| | - Vojsava Gjoni
- Department of Biology, University of South Dakota, Vermillion, SD 57609, USA
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Sun X, Yu M, Tang Q, Sun Y. Assessing the Ecological Conversion Efficiency of Chub Mackerel, Somber japonicus, in Wild Conditions Based on an In Situ Enriched Simulation Method. Animals (Basel) 2023; 13:3159. [PMID: 37893883 PMCID: PMC10603723 DOI: 10.3390/ani13203159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/12/2023] [Accepted: 09/26/2023] [Indexed: 10/29/2023] Open
Abstract
Understanding the ecological conversion efficiency of a fish species can be used to estimate the potential impact of the marine food web and accordingly provides scientific advice to ecosystem-based fishery management. However, only laboratory experiments may limit the accuracy of determining this index. In this study, food ingestion and ecological conversion efficiency of wild chub mackerel (Somber japonicus), a typical marine pelagic fish, were determined with gastric evacuation method in laboratory and in situ enriched simulation conditions. Additionally, the effect of temperature and body weight on ecological conversion efficiency was further estimated based on the 2D interpolation method. The results showed that, at 25.1 °C, the ecological conversion efficiency determined in-lab (35.31%) was significantly higher than in situ (23.85%). Moreover, the interpolation model estimated that with an increase in temperature (10-27 °C), the ecological conversion efficiency initially decreased, followed by an increase when the temperature reached 18 °C, but the ecological conversion efficiency generally decreased against the body weight at each temperature. The findings of this study enhanced the understanding of the energy budget of chub mackerel and also provided an efficient method for the determination of wild fishes that are difficult to sample in situ and domesticate in the laboratory.
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Affiliation(s)
- Xin Sun
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources of Ministry of Agriculture, Yellow Sea Fisheries Research Institute, CAFS, 106 Nanjing Road, Qingdao 266071, China
| | - Miao Yu
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources of Ministry of Agriculture, Yellow Sea Fisheries Research Institute, CAFS, 106 Nanjing Road, Qingdao 266071, China
| | - Qisheng Tang
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources of Ministry of Agriculture, Yellow Sea Fisheries Research Institute, CAFS, 106 Nanjing Road, Qingdao 266071, China
| | - Yao Sun
- Key Laboratory for Sustainable Utilization of Marine Fisheries Resources of Ministry of Agriculture, Yellow Sea Fisheries Research Institute, CAFS, 106 Nanjing Road, Qingdao 266071, China
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Pile B, Warren D, Hassall C, Brown LE, Dunn AM. Biological Invasions Affect Resource Processing in Aquatic Ecosystems: The Invasive Amphipod Dikerogammarus villosus Impacts Detritus Processing through High Abundance Rather than Differential Response to Temperature. BIOLOGY 2023; 12:830. [PMID: 37372115 DOI: 10.3390/biology12060830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 05/24/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023]
Abstract
Anthropogenic stressors such as climate warming and invasive species and natural stressors such as parasites exert pressures that can interact to impact the function of ecosystems. This study investigated how these stressors interact to impact the vital ecosystem process of shredding by keystone species in temperate freshwater ecosystems. We compared metabolic rates and rates of shredding at a range of temperatures up to extreme levels, from 5 °C to 30 °C, between invasive and native amphipods that were unparasitised or parasitised by a common acanthocephalan, Echinorhynchus truttae. Shredding results were compared using the relative impact potential (RIP) metric to investigate how they impacted the scale with a numerical response. Although per capita shredding was higher for the native amphipod at all temperatures, the higher abundance of the invader led to higher relative impact scores; hence, the replacement of the native by the invasive amphipod is predicted to drive an increase in shredding. This could be interpreted as a positive effect on the ecosystem function, leading to a faster accumulation of amphipod biomass and a greater rate of fine particulate organic matter (FPOM) provisioning for the ecosystem. However, the high density of invaders compared with natives may lead to the exhaustion of the resource in sites with relatively low leaf detritus levels.
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Affiliation(s)
- Benjamin Pile
- School of Biology, University of Leeds, Leeds LS2 9JT, West Yorkshire, UK
| | - Daniel Warren
- Animal and Plant Health Agency (APHA), Sand Hutton YO41 1LZ, York, UK
| | | | - Lee E Brown
- School of Geography and Water@Leeds, University of Leeds, Leeds LS2 9JT, West Yorkshire, UK
| | - Alison M Dunn
- School of Biology, University of Leeds, Leeds LS2 9JT, West Yorkshire, UK
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