1
|
Lo VK, Zillig KW, Cocherell DE, Todgham AE, Fangue NA. Effects of low temperature on growth and metabolism of larval green sturgeon (Acipenser medirostris) across early ontogeny. J Comp Physiol B 2024:10.1007/s00360-024-01568-y. [PMID: 38955877 DOI: 10.1007/s00360-024-01568-y] [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: 08/01/2023] [Revised: 04/27/2024] [Accepted: 05/13/2024] [Indexed: 07/04/2024]
Abstract
Southern Distinct Population Segment (sDPS) green sturgeon spawn solely in one stretch of the Sacramento River in California. Management of this spawning habitat is complicated by cold water temperature requirements for the conservation of winter-run Chinook salmon. This study assessed whether low incubation and rearing temperatures resulted in carryover effects across embryo to early juvenile life stages on scaling relationships in growth and metabolism in northern DPS green sturgeon used as a proxy for sDPS green sturgeon. Fish were incubated and reared at 11 °C and 15 °C, with a subset experiencing a reciprocal temperature transfer post-hatch, to assess recovery from cold incubation or to simulate a cold-water dam release which would chill rearing larvae. Growth and metabolic rate of embryos and larvae were measured to 118 days post hatch. Reciprocal temperature transfers revealed a greater effect of low temperature exposure during larval rearing rather than during egg incubation. While 11 °C eggs hatched at a smaller length, log-transformed length-weight relationships showed that these differences in developmental trajectory dissipated as individuals achieved juvenile morphology. However, considerable size-at-age differences persisted between rearing temperatures, with 15 °C fish requiring 60 days post-hatch to achieve 1 g in mass, whereas 11 °C fish required 120 days to achieve 1 g, resulting in fish of the same age at the completion of the experiment with a ca. 37-fold difference in weight. Consequently, our study suggests that cold rearing temperatures have far more consequential downstream effects than cold embryo incubation temperatures. Growth delays from 11 °C rearing temperatures would greatly increase the period of vulnerability to predation in larval green sturgeon. The scaling relationship between log-transformed whole-body metabolism and mass exhibited a steeper slope and thus an increased oxygen requirement with size in 11 °C reared fish, potentially indicating an energetically unsustainable situation. Understanding how cold temperatures affect green sturgeon ontogeny is necessary to refine our larval recruitment estimations for this threatened species.
Collapse
Affiliation(s)
- Vanessa K Lo
- Department of Wildlife, Fish and Conservation Biology, University of California Davis, Davis, CA, 95616, USA
| | - Kenneth W Zillig
- Department of Wildlife, Fish and Conservation Biology, University of California Davis, Davis, CA, 95616, USA
| | - Dennis E Cocherell
- Department of Wildlife, Fish and Conservation Biology, University of California Davis, Davis, CA, 95616, USA
| | - Anne E Todgham
- Department of Animal Science, University of California Davis, Davis, CA, 95616, USA
| | - Nann A Fangue
- Department of Wildlife, Fish and Conservation Biology, University of California Davis, Davis, CA, 95616, USA.
| |
Collapse
|
2
|
Johansen JL, Mitchell MD, Vaughan GO, Ripley DM, Shiels HA, Burt JA. Impacts of ocean warming on fish size reductions on the world's hottest coral reefs. Nat Commun 2024; 15:5457. [PMID: 38951524 PMCID: PMC11217398 DOI: 10.1038/s41467-024-49459-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 06/04/2024] [Indexed: 07/03/2024] Open
Abstract
The impact of ocean warming on fish and fisheries is vigorously debated. Leading theories project limited adaptive capacity of tropical fishes and 14-39% size reductions by 2050 due to mass-scaling limitations of oxygen supply in larger individuals. Using the world's hottest coral reefs in the Persian/Arabian Gulf as a natural laboratory for ocean warming - where species have survived >35.0 °C summer temperatures for over 6000 years and are 14-40% smaller at maximum size compared to cooler locations - we identified two adaptive pathways that enhance survival at elevated temperatures across 10 metabolic and swimming performance metrics. Comparing Lutjanus ehrenbergii and Scolopsis ghanam from reefs both inside and outside the Persian/Arabian Gulf across temperatures of 27.0 °C, 31.5 °C and 35.5 °C, we reveal that these species show a lower-than-expected rise in basal metabolic demands and a right-shifted thermal window, which aids in maintaining oxygen supply and aerobic performance to 35.5 °C. Importantly, our findings challenge traditional oxygen-limitation theories, suggesting a mismatch in energy acquisition and demand as the primary driver of size reductions. Our data support a modified resource-acquisition theory to explain how ocean warming leads to species-specific size reductions and why smaller individuals are evolutionarily favored under elevated temperatures.
Collapse
Affiliation(s)
- Jacob L Johansen
- Hawaii Institute of Marine Biology, University of Hawaii at Manoa, Honolulu, HI, USA.
- Marine Biology Laboratory, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates.
| | - Matthew D Mitchell
- Marine Biology Laboratory, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates
| | - Grace O Vaughan
- Marine Biology Laboratory, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates
- BiOrbic, Bioeconomy SFI Research Centre, O'Brien Centre for Science, University College Dublin, Dublin, Ireland
| | - Daniel M Ripley
- Marine Biology Laboratory, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates
- Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Holly A Shiels
- Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - John A Burt
- Marine Biology Laboratory, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates
- Mubadala ACCESS Center, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates
| |
Collapse
|
3
|
Gjoni V, Marchessaux G, Glazier DS, Wesner JS, Bosch-Belmar M, Mancuso FP, Tantillo MF, Marsiglia N, Sarà G. Metabolic scaling of an invasive mussel depends on temperature and chemical cues from an invasive predator. Biol Lett 2024; 20:20240066. [PMID: 38836647 DOI: 10.1098/rsbl.2024.0066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 04/08/2024] [Indexed: 06/06/2024] Open
Abstract
Metabolism drives various biological processes, potentially influencing the ecological success and evolutionary fitness of species. Understanding diverse metabolic rates is fundamental in biology. Mechanisms underlying adaptation to factors like temperature and predation pressure remain unclear. Our study explored the role of temperature and predation pressure in shaping the metabolic scaling of an invasive mussel species (Brachidontes pharaonis). Specifically, we performed laboratory-based experiments to assess the effects of phenotypic plasticity on the metabolic scaling by exposing the mussels to water conditions with and without predator cues from another invasive species (the blue crab, Callinectes sapidus) across various temperature regimes. We found that temperature effects on metabolic scaling of the invasive mussels are mediated by the presence of chemical cues of an invasive predator, the blue crab. Investigating temperature-predator interactions underscores the importance of studying the ecological effects of global warming. Our research advances our understanding of how environmental factors jointly impact physiological processes.
Collapse
Affiliation(s)
- V Gjoni
- Department of Earth and Marine Science (DiSTeM), University of Palermo , Palermo, Italy
- NBFC, National Biodiversity Future Center , Palermo, Italy
| | - G Marchessaux
- Department of Earth and Marine Science (DiSTeM), University of Palermo , Palermo, Italy
- NBFC, National Biodiversity Future Center , Palermo, Italy
| | - D S Glazier
- Department of Biology, Juniata College , Huntingdon, PA, USA
| | - J S Wesner
- Department of Biology, University of South Dakota , Vermillion, SD, USA
| | - M Bosch-Belmar
- Department of Earth and Marine Science (DiSTeM), University of Palermo , Palermo, Italy
- NBFC, National Biodiversity Future Center , Palermo, Italy
| | - F P Mancuso
- Department of Earth and Marine Science (DiSTeM), University of Palermo , Palermo, Italy
- NBFC, National Biodiversity Future Center , Palermo, Italy
| | - M F Tantillo
- Department of Earth and Marine Science (DiSTeM), University of Palermo , Palermo, Italy
- NBFC, National Biodiversity Future Center , Palermo, Italy
| | - N Marsiglia
- Department of Earth and Marine Science (DiSTeM), University of Palermo , Palermo, Italy
- NBFC, National Biodiversity Future Center , Palermo, Italy
| | - G Sarà
- Department of Earth and Marine Science (DiSTeM), University of Palermo , Palermo, Italy
- NBFC, National Biodiversity Future Center , Palermo, Italy
| |
Collapse
|
4
|
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.
Collapse
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
| |
Collapse
|
5
|
de Groot VA, Trueman C, Bates AE. Incorporating otolith-isotope inferred field metabolic rate into conservation strategies. CONSERVATION PHYSIOLOGY 2024; 12:coae013. [PMID: 38666227 PMCID: PMC11044438 DOI: 10.1093/conphys/coae013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 02/08/2024] [Accepted: 02/24/2024] [Indexed: 04/28/2024]
Abstract
Fluctuating ocean conditions are rearranging whole networks of marine communities-from individual-level physiological thresholds to ecosystem function. Physiological studies support predictions from individual-level responses (biochemical, cellular, tissue, respiratory potential) based on laboratory experiments. The otolith-isotope method of recovering field metabolic rate has recently filled a gap for the bony fishes, linking otolith stable isotope composition to in situ oxygen consumption and experienced temperature estimates. Here, we review the otolith-isotope method focusing on the biochemical and physiological processes that yield estimates of field metabolic rate. We identify a multidisciplinary pathway in the application of this method, providing concrete research goals (field, modeling) aimed at linking individual-level physiological data to higher levels of biological organization. We hope that this review will provide researchers with a transdisciplinary 'roadmap', guiding the use of the otolith-isotope method to bridge the gap between individual-level physiology, observational field studies, and modeling efforts, while ensuring that in situ data is central in marine policy-making aimed at mitigating climatic and anthropogenic threats.
Collapse
Affiliation(s)
- Valesca A de Groot
- Department of Ocean Sciences, Memorial University of Newfoundland, St. John’s, NL, A1C 5S7, Canada
- University of Victoria, 3800 Finnerty Rd, Victoria, BCV8 P5C2, Canada
| | - Clive Trueman
- School of Ocean and Earth Science, University of Southampton, Southampton SO1 43ZH, UK
| | - Amanda E Bates
- Department of Ocean Sciences, Memorial University of Newfoundland, St. John’s, NL, A1C 5S7, Canada
- University of Victoria, 3800 Finnerty Rd, Victoria, BCV8 P5C2, Canada
| |
Collapse
|
6
|
Phansawat P, Chuchird N, Keetanon A, Chongprachavat N, Pichitkul P, Paankhao N, Paankhao S, Kitsanayanyong L, Baoprasertkul P, Rairat T. Depletion kinetics of semicarbazide in giant river prawn (Macrobrachium rosenbergii) following nitrofurazone oral administration and its occurrence in an aquaculture farm. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2024; 107:104389. [PMID: 38360333 DOI: 10.1016/j.etap.2024.104389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 01/31/2024] [Accepted: 02/08/2024] [Indexed: 02/17/2024]
Abstract
Semicarbazide (SEM), a marker residue used to monitor the use of prohibited drug nitrofurazone (NFZ), is commonly found in wild crustaceans, implying the natural origin. However, the difference between endogenous and exogenous SEM has rarely been investigated. So, tissue-bound SEM was determined in samples collected from giant river prawns cultured in an aquaculture farm and in samples from an experiment where giant river prawns were fed twice a day with NFZ at 30 mg/kg for 5 days. At day 10 of drug withdrawal, muscle SEM of the NFZ-fed prawn was 17.78 ng/g and depleted to 1.18 ng/g at day 90 (half-life 20.31 days) which was significantly higher than the control prawn (usually ≤ 0.1 ng/g). In contrast, the average SEM in the shell was independent of NFZ treatment. SEM was not found in the aquaculture farm samples, implying that the SEM in cultured prawn did not originate from SEM contamination.
Collapse
Affiliation(s)
- Putsucha Phansawat
- Department of Fishery Biology, Faculty of Fisheries, Kasetsart University, Bangkok, Thailand
| | - Niti Chuchird
- Department of Fishery Biology, Faculty of Fisheries, Kasetsart University, Bangkok, Thailand
| | - Arunothai Keetanon
- Department of Fishery Biology, Faculty of Fisheries, Kasetsart University, Bangkok, Thailand
| | - Natnicha Chongprachavat
- Department of Fishery Biology, Faculty of Fisheries, Kasetsart University, Bangkok, Thailand
| | - Phongchate Pichitkul
- Department of Aquaculture, Faculty of Fisheries, Kasetsart University, Bangkok, Thailand
| | - Natthapong Paankhao
- Kamphaengsaen Fisheries Research Station, Faculty of Fisheries, Kasetsart University, Nakhon Pathom, Thailand
| | - Suwinai Paankhao
- Kamphaengsaen Fisheries Research Station, Faculty of Fisheries, Kasetsart University, Nakhon Pathom, Thailand
| | | | - Puttharat Baoprasertkul
- Aquatic Animal Health Research and Development Division, Department of Fisheries, Ministry of Agriculture and Cooperatives, Bangkok, Thailand
| | - Tirawat Rairat
- Department of Fishery Biology, Faculty of Fisheries, Kasetsart University, Bangkok, Thailand.
| |
Collapse
|
7
|
Nelson JA, Thorarensen HT. Thermal tolerance of cultured and wild Icelandic arctic charr (Salvelinus alpinus) at self-selected flow rates. J Therm Biol 2024; 121:103863. [PMID: 38723312 DOI: 10.1016/j.jtherbio.2024.103863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 04/18/2024] [Accepted: 04/21/2024] [Indexed: 05/26/2024]
Abstract
Climate change is predicted to change not only the temperature of many freshwater systems but also flow dynamics. Understanding how fishes will fare in the future requires knowing how they will respond to both extended variations of temperature and flow. Arctic charr have had their thermal tolerance measured, but never with respect to flow. Additionally, this circumpolar species has multiple populations exhibiting dramatic phenotypic plasticity which may mean that regional differences in thermal tolerance are unaccounted for. In Iceland, Arctic charr populations have experienced highly variable flow and temperature conditions over the past 10,000 years. The Icelandic climate, topography and geothermal activity have created a mosaic of freshwater habitats inhabited by charr that vary substantially in both temperature and flow. Our purpose was to test whether populations from these varied environments had altered thermal tolerance and whether phenotypic plasticity of thermal tolerance in charr depends on flow. We raised cultured Icelandic charr from hatch under a 2 X 2 matrix of flow and temperature and compared them to wild charr captured from matching flow and temperature environments. Wild fish were more thermally tolerant than cultured fish at both acclimation temperatures and were more thermally plastic. Icelandic Arctic charr were more thermally tolerant than comparison charr populations across Europe and North America, but only when acclimated to 13 °C; fish acclimated to 5 °C compared equably with comparison charr populations. Icelandic Arctic charr were also more thermally plastic than all but one other salmonine species. Neither flow of rearing or the flow selected during a thermal tolerance (CTmax) test factored into thermal tolerance. Thermal tolerance was also independent of body size, condition factor, heart and gill size. In summary, wild Icelandic Arctic charr have greater thermal tolerance and plasticity than predicted from the literature and their latitude, but artificial selection for properties like growth rate or fecundity may be breeding that increased tolerance out of cultured fish. As the world moves toward a warmer climate and increased dependence on cultured fish, this is a noteworthy result and merits further study.
Collapse
Affiliation(s)
- Jay A Nelson
- Department of Aquaculture and Fish Biology, Hólar University College, 551, Sauðárkrókur, Iceland.
| | - Helgi Thor Thorarensen
- Department of Aquaculture and Fish Biology, Hólar University College, 551, Sauðárkrókur, Iceland
| |
Collapse
|
8
|
Dai Q, Suski CD. Differing physiological performance of coexisting cool- and warmwater fish species under heatwaves in the Midwestern United States. PLoS One 2024; 19:e0301130. [PMID: 38517899 PMCID: PMC10959393 DOI: 10.1371/journal.pone.0301130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 03/08/2024] [Indexed: 03/24/2024] Open
Abstract
Heatwaves are becoming more frequent and intensified with climate change. Freshwater ecosystems are among the most threatened, within which, differing responses between cool- and warmwater species to heatwaves can lead to fundamental changes in communities. Physiological experiments can identify potential mechanisms underlying the impacts of such heatwaves on fish communities. In the current study, we quantified the oxygen consumption rate, aerobic scope and swimming performance of cool- and warmwater fish species following the simulation of short-term heatwaves currently occurring in streams in the Midwestern United States. The coolwater predator walleye (Sander vitreus) showed clear thermal disadvantages relative to the warmwater predator largemouth bass (Micropterus salmoides), based on a high metabolic cost during the heatwave, low metabolic activity when encountering prey, and reduced swimming performance following the heatwave. Largemouth bass also showed a thermal advantage relative to the warmwater prey fathead minnow (Pimephales promelas) related to swimming performance and energetic costs, highlighting differing thermal responses between predators and prey. This study demonstrates the importance of considering short-term extreme thermal events in the response of aquatic communities to climate stressors.
Collapse
Affiliation(s)
- Qihong Dai
- Program in Ecology, Evolution, and Conservation Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America
| | - Cory D. Suski
- Program in Ecology, Evolution, and Conservation Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America
- Department of Natural Resources and Environmental Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America
| |
Collapse
|
9
|
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'.
Collapse
Affiliation(s)
| | - Vojsava Gjoni
- Department of Biology, University of South Dakota, Vermillion, SD 57609, USA
| |
Collapse
|
10
|
Lonthair JK, Wegner NC, Cheng BS, Fangue NA, O'Donnell MJ, Regish AM, Swenson JD, Argueta E, McCormick SD, Letcher BH, Komoroske LM. Smaller body size under warming is not due to gill-oxygen limitation in a cold-water salmonid. J Exp Biol 2024; 227:jeb246477. [PMID: 38380449 DOI: 10.1242/jeb.246477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 01/10/2024] [Indexed: 02/22/2024]
Abstract
Declining body size in fishes and other aquatic ectotherms associated with anthropogenic climate warming has significant implications for future fisheries yields, stock assessments and aquatic ecosystem stability. One proposed mechanism seeking to explain such body-size reductions, known as the gill oxygen limitation (GOL) hypothesis, has recently been used to model future impacts of climate warming on fisheries but has not been robustly empirically tested. We used brook trout (Salvelinus fontinalis), a fast-growing, cold-water salmonid species of broad economic, conservation and ecological value, to examine the GOL hypothesis in a long-term experiment quantifying effects of temperature on growth, resting metabolic rate (RMR), maximum metabolic rate (MMR) and gill surface area (GSA). Despite significantly reduced growth and body size at an elevated temperature, allometric slopes of GSA were not significantly different than 1.0 and were above those for RMR and MMR at both temperature treatments (15°C and 20°C), contrary to GOL expectations. We also found that the effect of temperature on RMR was time-dependent, contradicting the prediction that heightened temperatures increase metabolic rates and reinforcing the importance of longer-term exposures (e.g. >6 months) to fully understand the influence of acclimation on temperature-metabolic rate relationships. Our results indicate that although oxygen limitation may be important in some aspects of temperature-body size relationships and constraints on metabolic supply may contribute to reduced growth in some cases, it is unlikely that GOL is a universal mechanism explaining temperature-body size relationships in aquatic ectotherms. We suggest future research focus on alternative mechanisms underlying temperature-body size relationships, and that projections of climate change impacts on fisheries yields using models based on GOL assumptions be interpreted with caution.
Collapse
Affiliation(s)
- Joshua K Lonthair
- Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA 01003-9285, USA
- National Research Council under contract to Fisheries Resources Division, Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, La Jolla, CA 92037-1508, USA
| | - Nicholas C Wegner
- Fisheries Resources Division, Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, La Jolla 92037-1508, CA, USA
| | - Brian S Cheng
- Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA 01003-9285, USA
| | - Nann A Fangue
- Department of Wildlife, Fish, and Conservation Biology, University of California, Davis, Davis, CA 95616, USA
| | - Matthew J O'Donnell
- US Geological Survey, Eastern Ecological Science Center at the S. O. Conte Research Laboratory, Turners Falls, MA 01376-1000, USA
| | - Amy M Regish
- US Geological Survey, Eastern Ecological Science Center at the S. O. Conte Research Laboratory, Turners Falls, MA 01376-1000, USA
| | - John D Swenson
- Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA 01003-9285, USA
| | - Estefany Argueta
- Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA 01003-9285, USA
| | - Stephen D McCormick
- Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA 01003-9285, USA
- US Geological Survey, Eastern Ecological Science Center at the S. O. Conte Research Laboratory, Turners Falls, MA 01376-1000, USA
| | - Benjamin H Letcher
- US Geological Survey, Eastern Ecological Science Center at the S. O. Conte Research Laboratory, Turners Falls, MA 01376-1000, USA
| | - Lisa M Komoroske
- Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA 01003-9285, USA
| |
Collapse
|
11
|
Green CJ, Hou C. Comparison of Energy Budget of Cockroach Nymph (Hemimetabolous) and Hornworm (Holometabolous) under Food Restriction. INSECTS 2024; 15:36. [PMID: 38249042 PMCID: PMC10816355 DOI: 10.3390/insects15010036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 12/29/2023] [Accepted: 01/05/2024] [Indexed: 01/23/2024]
Abstract
Animals with different life histories budget their intake energy differently when food availability is low. It has been shown previously that hornworm (larva of Manduca sexta), a holometabolous insect species with a short development stage, prioritizes growth at the price of metabolism under food restriction, but it is unclear how hemimetabolous insect species with a relatively long development period budget their intake energy under food scarcity. Here, we use orange head cockroaches (Eublaberus posticus) to investigate this question. We found that for both species under food restriction, rates of metabolism and growth were suppressed, but the degree of reduction was more severe in growth than that of metabolism for cockroaches. Under both free-feeding and food restriction conditions, hornworms allocated a larger fraction of assimilated energy to growth than to metabolism, and cockroaches were the opposite. More importantly, when food availability was low, the fraction of assimilated energy allocated to growth was reduced by 120% in cockroaches, and the energy from growth was channeled to compensate for the reduction in metabolism; but, the fraction of assimilated energy allocated to growth was only reduced by 14% in hornworms. These results suggest that, compared to hornworms, cockroaches prioritize metabolism over growth.
Collapse
Affiliation(s)
| | - Chen Hou
- Department of Biological Sciences, Missouri University of Science and Technology, Rolla, MO 65409, USA;
| |
Collapse
|
12
|
White CR, Marshall DJ. How and Why Does Metabolism Scale with Body Mass? Physiology (Bethesda) 2023; 38:0. [PMID: 37698354 DOI: 10.1152/physiol.00015.2023] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 09/08/2023] [Accepted: 09/08/2023] [Indexed: 09/13/2023] Open
Abstract
Most explanations for the relationship between body size and metabolism invoke physical constraints; such explanations are evolutionarily inert, limiting their predictive capacity. Contemporary approaches to metabolic rate and life history lack the pluralism of foundational work. Here, we call for reforging of the lost links between optimization approaches and physiology.
Collapse
Affiliation(s)
- Craig R White
- School of Biological Sciences and Centre for Geometric Biology, Monash University, Clayton, Victoria, Australia
| | - Dustin J Marshall
- School of Biological Sciences and Centre for Geometric Biology, Monash University, Clayton, Victoria, Australia
| |
Collapse
|
13
|
Kraskura K, Hardison EA, Eliason EJ. Body size and temperature affect metabolic and cardiac thermal tolerance in fish. Sci Rep 2023; 13:17900. [PMID: 37857749 PMCID: PMC10587238 DOI: 10.1038/s41598-023-44574-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 10/10/2023] [Indexed: 10/21/2023] Open
Abstract
Environmental warming is associated with reductions in ectotherm body sizes, suggesting that larger individuals may be more vulnerable to climate change. The mechanisms driving size-specific vulnerability to temperature are unknown but are required to finetune predictions of fisheries productivity and size-structure community responses to climate change. We explored the potential metabolic and cardiac mechanisms underlying these body size vulnerability trends in a eurythermal fish, barred surfperch. We acutely exposed surfperch across a large size range (5-700 g) to four ecologically relevant temperatures (16 °C, 12 °C, 20 °C, and 22 °C) and subsequently, measured their metabolic capacity (absolute and factorial aerobic scopes, maximum and resting metabolic rates; AAS, FAS, MMR, RMR). Additionally, we estimated the fish's cardiac thermal tolerance by measuring their maximum heart rates (fHmax) across acutely increasing temperatures. Barred surfperch had parallel hypoallometric scaling of MMR and RMR (exponent 0.81) and a weaker hypoallometric scaling of fHmax (exponent - 0.05) across all test temperatures. In contrast to our predictions, the fish's aerobic capacity was maintained across sizes and acute temperatures, and larger fish had greater cardiac thermal tolerance than smaller fish. These results demonstrate that thermal performance may be limited by different physiological constraints depending on the size of the animal and species of interest.
Collapse
Affiliation(s)
- Krista Kraskura
- Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, CA, 93106, USA.
| | - Emily A Hardison
- Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, CA, 93106, USA
| | - Erika J Eliason
- Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, CA, 93106, USA
| |
Collapse
|
14
|
Mauritsson K, Jonsson T. A new flexible model for maintenance and feeding expenses that improves description of individual growth in insects. Sci Rep 2023; 13:16751. [PMID: 37798309 PMCID: PMC10556006 DOI: 10.1038/s41598-023-43743-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 09/27/2023] [Indexed: 10/07/2023] Open
Abstract
Metabolic theories in ecology interpret ecological patterns at different levels through the lens of metabolism, typically applying allometric scaling to describe energy use. This requires a sound theory for individual metabolism. Common mechanistic growth models, such as 'von Bertalanffy', 'dynamic energy budgets' and the 'ontogenetic growth model' lack some potentially important aspects, especially regarding regulation of somatic maintenance. We develop a model for ontogenetic growth of animals, applicable to ad libitum and food limited conditions, based on an energy balance that expresses growth as the net result of assimilation and metabolic costs for maintenance, feeding and food processing. The most important contribution is the division of maintenance into a 'non-negotiable' and a 'negotiable' part, potentially resulting in hyperallometric scaling of maintenance and downregulated maintenance under food restriction. The model can also account for effects of body composition and type of growth at the cellular level. Common mechanistic growth models often fail to fully capture growth of insects. However, our model was able to capture empirical growth patterns observed in house crickets.
Collapse
Affiliation(s)
- Karl Mauritsson
- Ecological Modelling Group, School of Bioscience, University of Skövde, Skövde, Sweden.
- Ecological and Environmental Modeling, Department of Physics, Chemistry and Biology, Linköping University, Linköping, Sweden.
| | - Tomas Jonsson
- Ecological Modelling Group, School of Bioscience, University of Skövde, Skövde, Sweden
- Ecological and Environmental Modeling, Department of Physics, Chemistry and Biology, Linköping University, Linköping, Sweden
| |
Collapse
|
15
|
Hsu JCN, Rairat T, Lu YP, Chou CC. The Use of Tricaine Methanesulfonate (MS-222) in Asian Seabass ( Lates calcarifer) at Different Temperatures: Study of Optimal Doses, Minimum Effective Concentration, Blood Biochemistry, Immersion Pharmacokinetics, and Tissue Distributions. Vet Sci 2023; 10:539. [PMID: 37756061 PMCID: PMC10535516 DOI: 10.3390/vetsci10090539] [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: 07/20/2023] [Revised: 08/20/2023] [Accepted: 08/22/2023] [Indexed: 09/28/2023] Open
Abstract
This study was conducted to determine the optimal doses and minimum effective concentrations (MECs) of tricaine methanesulfonate (MS-222) in marketable-size Asian seabass reared at two temperatures (22 and 28 °C). Serum biochemical parameters, pharmacokinetics, and tissue distributions of MS-222 following immersion at the determined optimal doses were also evaluated in order to delineate possible mechanisms dictating the temperature difference. The definition of optimal dose is set as the dose when fish attain stage III anesthesia within 5 min, sustain this stage for 3 min, and re-attain equilibrium within 5 min. The MEC is the fish serum MS-222 concentration when stage III anesthesia is reached. The results showed that water temperature exerted no or minimal impact on the designated parameters. The optimal doses at 22 and 28 °C were 140 and 150 µg/mL, while the MECs were 70.48 and 78.27 µg/mL, respectively. Fish exposed to the optimal doses of MS-222 had significantly elevated blood concentrations of lactate, glucose, calcium, magnesium, and sodium, while the blood pH was significantly decreased. The fish eliminated MS-222 faster at 28 °C than at 22 °C, with serum half-lives of 18.43 and 37.01 h, respectively. Tissue-specific distribution patterns were evident. Irrespective of water temperature, MS-222 peaked at 5 min for the brain and gill but peaked slightly later at 10-20 min for the liver and kidney. Most tissues exhibit a gradual decline of drug concentration except for the gill, which was maintained at a steady level. Muscle is the least perfused tissue with the lowest drug concentration throughout the 90 min period. This study provided physiological and pharmacokinetic evidence contributing to a better understanding of the actions of MS-222 in Asian seabass at different temperatures.
Collapse
Affiliation(s)
- Julia Chu-Ning Hsu
- Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University, No. 145, Xingda Rd., South Dist., Taichung 40227, Taiwan;
| | - Tirawat Rairat
- Department of Fishery Biology, Faculty of Fisheries, Kasetsart University, 50 Paholyotin Rd., Ladyao, Chatujak, Bangkok 10900, Thailand;
| | - Yi-Ping Lu
- Biology Division, Veterinary Research Institute, Ministry of Agriculture, Executive Yuan, No. 376, Zhongzheng Rd., Danshui Dist., New Taipei City 25158, Taiwan;
| | - Chi-Chung Chou
- Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University, No. 145, Xingda Rd., South Dist., Taichung 40227, Taiwan;
| |
Collapse
|
16
|
Glazier DS. The Relevance of Time in Biological Scaling. BIOLOGY 2023; 12:1084. [PMID: 37626969 PMCID: PMC10452035 DOI: 10.3390/biology12081084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/13/2023] [Accepted: 07/31/2023] [Indexed: 08/27/2023]
Abstract
Various phenotypic traits relate to the size of a living system in regular but often disproportionate (allometric) ways. These "biological scaling" relationships have been studied by biologists for over a century, but their causes remain hotly debated. Here, I focus on the patterns and possible causes of the body-mass scaling of the rates/durations of various biological processes and life-history events, i.e., the "pace of life". Many biologists have regarded the rate of metabolism or energy use as the master driver of the "pace of life" and its scaling with body size. Although this "energy perspective" has provided valuable insight, here I argue that a "time perspective" may be equally or even more important. I evaluate various major ways that time may be relevant in biological scaling, including as (1) an independent "fourth dimension" in biological dimensional analyses, (2) a universal "biological clock" that synchronizes various biological rates/durations, (3) a scaling method that uses various biological time periods (allochrony) as scaling metrics, rather than various measures of physical size (allometry), as traditionally performed, (4) an ultimate body-size-related constraint on the rates/timing of biological processes/events that is set by the inevitability of death, and (5) a geological "deep time" approach for viewing the evolution of biological scaling patterns. Although previously proposed universal four-dimensional space-time and "biological clock" views of biological scaling are problematic, novel approaches using allochronic analyses and time perspectives based on size-related rates of individual mortality and species origination/extinction may provide new valuable insights.
Collapse
|
17
|
Prinzing TS, Bigman JS, Skelton ZR, Dulvy NK, Wegner NC. The allometric scaling of oxygen supply and demand in the California horn shark, Heterodontus francisci. J Exp Biol 2023; 226:jeb246054. [PMID: 37493039 DOI: 10.1242/jeb.246054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 07/12/2023] [Indexed: 07/27/2023]
Abstract
The gill surface area of aquatic ectotherms is thought to be closely linked to the ontogenetic scaling of metabolic rate, a relationship that is often used to explain and predict ecological patterns across species. However, there are surprisingly few within-species tests of whether metabolic rate and gill area scale similarly. We examined the relationship between oxygen supply (gill area) and demand (metabolic rate) by making paired estimates of gill area with resting and maximum metabolic rates across ontogeny in the relatively inactive California horn shark, Heterodontus francisci. We found that the allometric slope of resting metabolic rate was 0.966±0.058 (±95% CI), whereas that of maximum metabolic rate was somewhat steeper (1.073±0.040). We also discovered that the scaling of gill area shifted with ontogeny: the allometric slope of gill area was shallower in individuals <0.203 kg in body mass (0.564±0.261), but increased to 1.012±0.113 later in life. This appears to reflect changes in demand for gill-oxygen uptake during egg case development and immediately post hatch, whereas for most of ontogeny, gill area scales in between that of resting and maximum metabolic rate. These relationships differ from predictions of the gill oxygen limitation theory, which argues that the allometric scaling of gill area constrains metabolic processes. Thus, for the California horn shark, metabolic rate does not appear limited by theoretical surface-area-to-volume ratio constraints of gill area. These results highlight the importance of data from paired and size-matched individuals when comparing physiological scaling relationships.
Collapse
Affiliation(s)
- Tanya S Prinzing
- Earth to Ocean Research Group, Department of Biological Sciences, Simon Fraser University, Burnaby, BC, Canada, V5A 1S6
| | - Jennifer S Bigman
- Earth to Ocean Research Group, Department of Biological Sciences, Simon Fraser University, Burnaby, BC, Canada, V5A 1S6
- Alaska Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, WA 98115, USA
| | - Zachary R Skelton
- Ocean Associates Inc., under contract to Fisheries Resources Division, Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, La Jolla, CA 92037, USA
- Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093, USA
| | - Nicholas K Dulvy
- Earth to Ocean Research Group, Department of Biological Sciences, Simon Fraser University, Burnaby, BC, Canada, V5A 1S6
| | - Nicholas C Wegner
- Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093, USA
- Fisheries Resources Division, Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, La Jolla, CA 92037, USA
| |
Collapse
|
18
|
Fry B, Carter JF, O'Mara K. Fingerprinting eukaryotic metabolism across the animal kingdom using position-specific isotope analysis (PSIA) 13C/ 12C measurements. SCIENCE ADVANCES 2023; 9:eadg1549. [PMID: 37406114 DOI: 10.1126/sciadv.adg1549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 06/01/2023] [Indexed: 07/07/2023]
Abstract
Despite differences in their overall metabolism, eukaryotes share a common mitochondrial biochemistry. We investigated how this fundamental biochemistry supports overall metabolism using a high-resolution carbon isotope approach, position-specific isotope analysis. We measured carbon isotope 13C/12C cycling in animals, focusing on amino acids that are formed in mitochondrial reactions and are most metabolically active. Carboxyl isotope determinations for amino acids showed strong signals related to common biochemical pathways. Contrasting isotope patterns were measured for metabolism associated with major life history patterns, including growth and reproduction. Turnover of proteins and lipids as well as gluoconeogensis dynamics could be estimated for these metabolic life histories. The high-resolution isotomics measurements fingerprinted metabolism and metabolic strategies across the eukaryotic animal kingdom, yielding results for humans, ungulates, whales, and diverse fish and invertebrates in a nearshore marine food web.
Collapse
Affiliation(s)
- Brian Fry
- Australian Rivers Institute, Griffith University, Nathan, Queensland 4111, Australia
| | - James F Carter
- Queensland Health, Forensic and Scientific Services, Coopers Plains, Queensland 4108, Australia
| | - Kaitlyn O'Mara
- Australian Rivers Institute, Griffith University, Nathan, Queensland 4111, Australia
| |
Collapse
|
19
|
Corum O, Uney K, Terzi E, Durna Corum D, Coskun D, Altan F, Elmas M. Effects of Temperature on the Pharmacokinetics, Tissue Residues, and Withdrawal Times of Doxycycline in Rainbow Trout ( Oncorhynchus mykiss) following Oral Administration. Vet Sci 2023; 10:401. [PMID: 37368787 DOI: 10.3390/vetsci10060401] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/11/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
The purpose of this study was to compare the pharmacokinetics, tissue residues, and withdrawal times of doxycycline after oral administration in rainbow trout reared at 10 and 17 °C. Fish received a 20 mg/kg oral dose of doxycycline after a single or 5-day administration. Six rainbow trout were used at each sampling time point for plasma and tissue samples, including liver, kidney, and muscle and skin. The doxycycline concentration in the samples was determined using high-performance liquid chromatography with ultraviolet detector. The pharmacokinetic data were evaluated by non-compartmental kinetic analysis. The WT 1.4 software program was used to estimate the withdrawal times. The increase of temperature from 10 to 17 °C shortened the elimination half-life from 41.72 to 28.87 h, increased the area under the concentration-time curve from 173.23 to 240.96 h * μg/mL, and increased the peak plasma concentration from 3.48 to 5.50 μg/mL. At 10 and 17 °C, the doxycycline concentration was obtained in liver > kidney > plasma > muscle and skin. According to the MRL values stated for muscle and skin in Europe and China (100 μg/kg) and in Japan (50 μg/kg), the withdrawal times of doxycycline at 10 and 17 °C were 35 and 31 days, respectively, for Europe and China and 43 and 35 days, respectively, for Japan. Since temperature significantly affected pharmacokinetic behavior and withdrawal times of doxycycline in rainbow trout, temperature-dependent dosing regimens and withdrawal times of doxycycline might be necessary.
Collapse
Affiliation(s)
- Orhan Corum
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Hatay Mustafa Kemal, Antakya 31060, Türkiye
| | - Kamil Uney
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Selcuk, Konya 42031, Türkiye
| | - Ertugrul Terzi
- Faculty of Fisheries, University of Kastamonu, Kastamonu 37200, Türkiye
| | - Duygu Durna Corum
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Hatay Mustafa Kemal, Antakya 31060, Türkiye
| | - Devran Coskun
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Siirt, Siirt 56100, Türkiye
| | - Feray Altan
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Dokuz Eylul, Izmir 35140, Türkiye
| | - Muammer Elmas
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Selcuk, Konya 42031, Türkiye
| |
Collapse
|
20
|
Sánchez-González JR, Nicieza AG. Declining metabolic scaling parallels an ontogenetic change from elongate to deep-bodied shapes in juvenile Brown trout. Curr Zool 2023; 69:294-303. [PMID: 37351295 PMCID: PMC10284058 DOI: 10.1093/cz/zoac042] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 05/16/2022] [Accepted: 05/17/2022] [Indexed: 09/07/2023] Open
Abstract
Body shape and metabolic rate can be important determinants of animal performance, yet often their effects on influential traits are evaluated in a non-integrated way. This creates an important gap because the integration between shape and metabolism may be crucial to evaluate metabolic scaling theories. Here, we measured standard metabolic rate in 1- and 2-years old juvenile brown trout Salmo trutta, and used a geometric morphometrics approach to extricate the effects of ontogeny and size on the link between shape and metabolic scaling. We evidenced near-isometric ontogenetic scaling of metabolic rate with size, but also a biphasic pattern driven by a significant change in metabolic scaling, from positive to negative allometry. Moreover, the change in metabolic allometry parallels an ontogenetic change from elongate to deep-bodied shapes. This is consistent with the dynamic energy budget (DEB) and surface area (SA) theories, but not with the resource transport network theory which predicts increasing allometric exponents for trends towards more robust, three-dimensional bodies. In addition, we found a relationship between body shape and size independent metabolic rate, with a positive correlation between robustness and metabolic rate, which fits well within the view of Pace-of-Life Syndromes (POLS). Finally, our results align with previous studies that question the universality of metabolic scaling exponents and propose other mechanistic models explaining the diversity of metabolic scaling relationships or emphasizing the potential contribution of ecological factors.
Collapse
Affiliation(s)
- Jorge-Rubén Sánchez-González
- Department of Organisms and Systems Biology, University of Oviedo, 33006 Oviedo, Spain
- Department of Animal Science-Wildlife Section, University of Lleida, 25006 Lleida, Spain
| | - Alfredo G Nicieza
- Department of Organisms and Systems Biology, University of Oviedo, 33006 Oviedo, Spain
- Biodiversity Research Institute (IMIB), University of Oviedo-Principality of Asturias-CSIC, 33600 Mieres, Spain
| |
Collapse
|
21
|
Somo DA, Chu K, Richards JG. Gill surface area allometry does not constrain the body mass scaling of maximum oxygen uptake rate in the tidepool sculpin, Oligocottus maculosus. J Comp Physiol B 2023:10.1007/s00360-023-01490-9. [PMID: 37149515 DOI: 10.1007/s00360-023-01490-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 03/03/2023] [Accepted: 04/14/2023] [Indexed: 05/08/2023]
Abstract
The gill oxygen limitation hypothesis (GOLH) suggests that hypometric scaling of metabolic rate in fishes is a consequence of oxygen supply constraints imposed by the mismatched growth rates of gill surface area (a two-dimensional surface) and body mass (a three-dimensional volume). GOLH may, therefore, explain the size-dependent spatial distribution of fish in temperature- and oxygen-variable environments through size-dependent respiratory capacity, but this question is unstudied. We tested GOLH in the tidepool sculpin, Oligocottus maculosus, a species in which body mass decreases with increasing temperature- and oxygen-variability in the intertidal, a pattern consistent with GOLH. We statistically evaluated support for GOLH versus distributed control of [Formula: see text] allometry by comparing scaling coefficients for gill surface area, standard and maximum [Formula: see text] ([Formula: see text],Standard and [Formula: see text],Max, respectively), ventricle mass, hematocrit, and metabolic enzyme activities in white muscle. To empirically evaluate whether there is a proximate constraint on oxygen supply capacity with increasing body mass, we measured [Formula: see text],Max across a range of Po2s from normoxia to Pcrit, calculated the regulation value (R), a measure of oxyregulatory capacity, and analyzed the R-body mass relationship. In contrast with GOLH, gill surface area scaling either matched or was more than sufficient to meet [Formula: see text] demands with increasing body mass and R did not change with body mass. Ventricle mass (b = 1.22) scaled similarly to [Formula: see text],Max (b = 1.18) suggesting a possible role for the heart in the scaling of [Formula: see text],Max. Together our results do not support GOLH as a mechanism structuring the distribution of O. maculosus and suggest distributed control of oxyregulatory capacity.
Collapse
Affiliation(s)
- Derek A Somo
- Department of Zoology, The University of British Columbia, Vancouver, BC, V6T 1Z4, Canada.
| | - Ken Chu
- Department of Zoology, The University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
| | - Jeffrey G Richards
- Department of Zoology, The University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
| |
Collapse
|
22
|
On the natural selection of body mass allometries. ACTA OECOLOGICA 2023. [DOI: 10.1016/j.actao.2023.103889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
|
23
|
Lawrence MJ, Prystay TS, Dick M, Eliason EJ, Elvidge CK, Hinch SG, Patterson DA, Lotto AG, Cooke SJ. Metabolic constraints and individual variation shape the trade-off between physiological recovery and anti-predator responses in adult sockeye salmon. JOURNAL OF FISH BIOLOGY 2023. [PMID: 37102404 DOI: 10.1111/jfb.15420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 04/25/2023] [Indexed: 05/31/2023]
Abstract
Metabolic scope represents the aerobic energy budget available to an organism to perform non-maintenance activities (e.g., escape a predator, recover from a fisheries interaction, compete for a mate). Conflicting energetic requirements can give rise to ecologically relevant metabolic trade-offs when energy budgeting is constrained. The objective of this study was to investigate how aerobic energy is utilized when individual sockeye salmon (Oncorhynchus nerka) are exposed to multiple acute stressors. To indirectly assess metabolic changes in free-swimming individuals, salmon were implanted with heart rate biologgers. The animals were then exercised to exhaustion or briefly handled as a control, and allowed to recover from this stressor for 48 h. During the first 2 h of the recovery period, individual salmon were exposed to 90 ml of conspecific alarm cues or water as a control. Heart rate was recorded throughout the recovery period. Recovery effort and time was higher in exercised fish, relative to control fish, whereas exposure to an alarm cue had no effect on either of these metrics. Individual routine heart rate was negatively correlated with recovery time and effort. Together, these findings suggest that metabolic energy allocation towards exercise recovery (i.e., an acute stressor; handling, chase, etc.) trumps anti-predator responses in salmon, although individual variation may mediate this effect at the population level.
Collapse
Affiliation(s)
- Michael J Lawrence
- Fish Ecology and Conservation Physiology Laboratory, Department of Biology, Carleton University, Ottawa, Ontario, Canada
| | - Tanya S Prystay
- Fish Ecology and Conservation Physiology Laboratory, Department of Biology, Carleton University, Ottawa, Ontario, Canada
| | - Melissa Dick
- Fish Ecology and Conservation Physiology Laboratory, Department of Biology, Carleton University, Ottawa, Ontario, Canada
| | - Erika J Eliason
- Fish Ecology and Conservation Physiology Laboratory, Department of Biology, Carleton University, Ottawa, Ontario, Canada
- Department of Ecology, Evolution & Marine Biology, University of California, Santa Barbara, California, USA
| | - Chris K Elvidge
- Fish Ecology and Conservation Physiology Laboratory, Department of Biology, Carleton University, Ottawa, Ontario, Canada
| | - Scott G Hinch
- Department of Forest and Conservation Sciences, University of British Columbia, Vancouver, British Columbia, Canada
| | - David A Patterson
- Fisheries and Oceans Canada, School of Resource and Environmental Management, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Andrew G Lotto
- Department of Forest and Conservation Sciences, University of British Columbia, Vancouver, British Columbia, Canada
| | - Steven J Cooke
- Fish Ecology and Conservation Physiology Laboratory, Department of Biology, Carleton University, Ottawa, Ontario, Canada
| |
Collapse
|
24
|
Morshedi V, Noori F, Prokić MD, Petrović TG, Jafari F, Moradian SH. Changes of oxidative status in yellowfin seabream larvae (Acanthopagrus latus) during development. Comp Biochem Physiol A Mol Integr Physiol 2023; 281:111433. [PMID: 37068729 DOI: 10.1016/j.cbpa.2023.111433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 04/09/2023] [Accepted: 04/13/2023] [Indexed: 04/19/2023]
Abstract
Dynamic changes of tissues, organs and growth that occur in fish larvae during the transition to the juvenile stage are accompanied by differences in metabolic, locomotor and feeding activities that can reflect on fish's oxidative status. In this study, we examine how body growth, antioxidant system (superoxide dismutase (SOD), catalase (CAT), glutathione reductase (GR) and total antioxidant capacity (TAC) and oxidative damage (malondialdehyde-MDA) parameters change in larvae of yellowfin seabream larvae (Acanthopagrus latus) during early development (0, 7, 15, 22 and 30 day after hatching-DAH). Body growth (length and weight) starts to intensify from 15 DAH. We observed general increase in the antioxidant system (AOS) with the age of larvae from newly hatched and 7 DAH up to 15 and 22 DAH individuals. 15 and 22 DAH larvae had the greatest levels of TAC, SOD and GR activity, while 30 DAH larvae had higher CAT activity from 0, 7 and 15 DAH and MDA concentration in comparison to 15 DAH individuals. Several developmental events can be linked with observed results: lower AOS in 0 and 7 DAH individuals with low locomotor activity, growth, endo-exogenous feeding phase and cell differentiation; 15 and 22 DAH larvae are under pressure of fast growth, enhanced swimming and foraging capacity; while higher MDA production in 30 DAH larvae can be a result of shifts in muscle metabolism, changes in both quality and quantity of food and a significant increase in weight. The present study provides insight into the changes in redox status during the ontogeny of A. latus, fish species about which physiology is still little known but with a potential for use in marine culture. Ability to lower oxidative stress during critical developmental periods can enhance that potential.
Collapse
Affiliation(s)
- Vahid Morshedi
- Persian Gulf Research Institute, Persian Gulf University, Bushehr, Iran.
| | - Farzaneh Noori
- Department of Aquaculture, Artemia and Aquaculture Research Institute, Urmia University, Urmia, Iran
| | - Marko D Prokić
- Department of Physiology, Institute for Biological Research "Siniša Stanković", National Institute of the Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia
| | - Tamara G Petrović
- Department of Physiology, Institute for Biological Research "Siniša Stanković", National Institute of the Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia
| | - Fateme Jafari
- Department of Aquaculture, Artemia and Aquaculture Research Institute, Urmia University, Urmia, Iran
| | - Seyed Hossein Moradian
- Fishes Genetic and Breeding Research Center, Agricultural Research, Education and Extension Organization (AREEO), 75914.358, Yasouj, Iran
| |
Collapse
|
25
|
Sumithra TG, Sharma SRK, Prasad V, Gop AP, Gangadharan S, Gayathri S, Ambrose A, Rajisha R, Panda SK, Anil MK, Patil PK. Pharmacokinetics and tissue distribution of florfenicol and florfenicol amine in snubnose pompano (Trachinotus blochii) following oral administration. FISH PHYSIOLOGY AND BIOCHEMISTRY 2023; 49:307-320. [PMID: 36949263 DOI: 10.1007/s10695-023-01179-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 03/09/2023] [Indexed: 05/04/2023]
Abstract
The present study reports the comparative pharmacokinetic profiles of florfenicol and its metabolite (florfenicol amine, FFA) in Trachinotus blochii under tropical marine conditions (salinity: 35 ± 1.4‰; temperature: 28.8 ± 0.54 °C) following a single in-feed oral administration of the recommended dose (15 mg/Kg). Furthermore, the study investigated the distribution of these two compounds in nine different tissues. The maximum florfenicol concentrations (Cmax) in plasma and tissues were observed within five hours (Tmax), except for bile. The Cmax ranged from 572 to 1954 ng/g or ml and was in the intestine > bile > muscle + skin > liver > gill = heart > plasma > kidney = spleen. The elimination half-life of FFC was significantly slower in the bile (38.25 ± 4.46 h). The AUC tissue/plasma was highest for bile (3.77 ± 0.22), followed by intestine > muscle + skin > heart > liver > kidney = gill = spleen. Tmax and t1/2β were slower, and Cmax was lower for FFA than florfenicol in all tissues except Cmax of the kidney and bile. FFA t1/2β was exceptionally slower in the kidney (46.01 ± 8.2 h). Interestingly, reaching an apparent distribution rate of > 0.5 was comparatively faster in the kidney, liver, and gills than in other tissues. The highest apparent metabolic rate was in the kidney (0.95 ± 0.01) and the lowest in plasma (0.41 ± 0.01). The generated data can be applied for formulating efficient therapeutic protocols in T. blochii, a promising mariculture species.
Collapse
Affiliation(s)
- T G Sumithra
- Fish Health Section, Marine Biotechnology, Fish Nutrition and Health Division, ICAR-Central Marine Fisheries Research Institute (ICAR-CMFRI), Ernakulam North PO, Kochi, 682018, Kerala, India
| | - S R Krupesha Sharma
- Fish Health Section, Marine Biotechnology, Fish Nutrition and Health Division, ICAR-Central Marine Fisheries Research Institute (ICAR-CMFRI), Ernakulam North PO, Kochi, 682018, Kerala, India.
| | - Vishnu Prasad
- Fish Health Section, Marine Biotechnology, Fish Nutrition and Health Division, ICAR-Central Marine Fisheries Research Institute (ICAR-CMFRI), Ernakulam North PO, Kochi, 682018, Kerala, India
| | - Ambarish P Gop
- Vizhinjam Regional Centre of ICAR-CMFRI, Vizhinjam P.O, Thiruvananthapuram, 692521, Kerala, India
| | - Suja Gangadharan
- Fish Health Section, Marine Biotechnology, Fish Nutrition and Health Division, ICAR-Central Marine Fisheries Research Institute (ICAR-CMFRI), Ernakulam North PO, Kochi, 682018, Kerala, India
| | - S Gayathri
- Fish Health Section, Marine Biotechnology, Fish Nutrition and Health Division, ICAR-Central Marine Fisheries Research Institute (ICAR-CMFRI), Ernakulam North PO, Kochi, 682018, Kerala, India
| | - Antony Ambrose
- Fish Health Section, Marine Biotechnology, Fish Nutrition and Health Division, ICAR-Central Marine Fisheries Research Institute (ICAR-CMFRI), Ernakulam North PO, Kochi, 682018, Kerala, India
| | - R Rajisha
- Quality Assurance and Management Division, ICAR-Central Institute of Fisheries Technology, Kochi, 682029, Kerala, India
| | - S K Panda
- Quality Assurance and Management Division, ICAR-Central Institute of Fisheries Technology, Kochi, 682029, Kerala, India
| | - M K Anil
- Vizhinjam Regional Centre of ICAR-CMFRI, Vizhinjam P.O, Thiruvananthapuram, 692521, Kerala, India
| | - P K Patil
- Aquatic Animal Health and Environment Division, ICAR-Central Institute of Brackishwater Aquaculture, Santhome High Road, Chennai, 600028, Tamil Nadu, India
| |
Collapse
|
26
|
Elvy JE, Symonds JE, Hilton Z, Walker SP, Tremblay LA, Herbert NA. The relationships between specific dynamic action, nutrient retention and feed conversion ratio in farmed freshwater Chinook salmon (Oncorhynchus tshawytscha). JOURNAL OF FISH BIOLOGY 2023; 102:605-618. [PMID: 36562750 DOI: 10.1111/jfb.15293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
Improving the feed conversion ratio (FCR; the amount of feed consumed relative to the amount of weight gain) can reduce both production costs and environmental impacts of farmed fish. The aim of this study was to investigate what drives FCR to understand how nutrients are retained, as well as the amount of oxygen consumed for digestion, absorption and assimilation (a metabolic process known as specific dynamic action, SDA). Feed-efficient and inefficient Chinook salmon (Oncorhynchus tshawytscha) in fresh water were identified using ballotini beads and X-radiography that tracked individual feed intake across three assessment periods under satiated feeding. This allowed a comparison of physiological traits and body composition between the two FCR phenotypes over two time points as Chinook salmon grew from 305 to 620 g. Fish with higher daily feed intake (DFI) had higher daily weight gain (DWG) as expected. Nonetheless, the relationship between FCR and DFI as well as FCR and DWG was variable between time points. FCR and DWG were not correlated at the first time point and were negatively correlated at the second time point. In contrast, FCR and DFI were positively correlated at the first time point but not the second. Despite this, efficient fish ate smaller meals and retained more protein, lipid and energy in their body tissues. There was no detectable difference in metabolism between the two FCR phenotypes with respect to minimal resting metabolic rate, maximum metabolic rate, aerobic scope, or SDA parameters. In conclusion, FCR is not consistently associated with growth and metabolic differences in freshwater Chinook salmon, but FCR-efficient fish retain more nutrients and consume smaller meals.
Collapse
Affiliation(s)
- Jordan E Elvy
- Institute of Marine Science, University of Auckland, Auckland, New Zealand
- Cawthron Institute, Nelson, New Zealand
| | | | | | | | - Louis A Tremblay
- Cawthron Institute, Nelson, New Zealand
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Neill A Herbert
- Institute of Marine Science, University of Auckland, Auckland, New Zealand
| |
Collapse
|
27
|
Gómez-Regalado MDC, Martín J, Santos JL, Aparicio I, Alonso E, Zafra-Gómez A. Bioaccumulation/bioconcentration of pharmaceutical active compounds in aquatic organisms: Assessment and factors database. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 861:160638. [PMID: 36473663 DOI: 10.1016/j.scitotenv.2022.160638] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/27/2022] [Accepted: 11/28/2022] [Indexed: 06/17/2023]
Abstract
There is increasing evidence that the presence of certain pharmaceuticals in the environment leads to biota exposure and constitute a potential risk for ecosystems. Bioaccumulation is an essential focus of risk assessment to evaluate at what degree emerging contaminants are a hazard both to the environment and the individuals that inhabit it. The main goals of the present review are 1) to summarize and describe the research and factors that should be taken into account in the evaluation of bioaccumulation of pharmaceuticals in aquatic organisms; and 2) to provide a database and a critical review of the bioaccumulation/bioconcentration factors (BAF or BCF) of these compounds in organisms of different trophic levels. Most studies fall into one of two categories: laboratory-scale absorption and purification tests or field studies and, to a lesser extent, large-scale, semi-natural system tests. Although in the last 5 years there has been considerable progress in this field, especially in species of fish and molluscs, research is still limited on other aquatic species like crustaceans or algae. This revision includes >230 bioconcentration factors (BCF) and >530 bioaccumulation factors (BAF), determined for 113 pharmaceuticals. The most commonly studied is the antidepressant group, followed by diclofenac and carbamazepine. There is currently no reported accumulation data on certain compounds, such as anti-cancer drugs. BCFs are highly influenced by experimental factors (notably the exposure level, time or temperature). Field BAFs are superior to laboratory BCFs, highlighting the importance of field studies for reliable assessments and in true environmental conditions. BAF data appears to be organ, species and compound-specific. The potential impact on food web transfer is also considered. Among different aquatic species, lower trophic levels and benthic organisms exhibit relatively higher uptake of these compounds.
Collapse
Affiliation(s)
| | - Julia Martín
- Department of Analytical Chemistry, Escuela Politécnica Superior, University of Seville, C/ Virgen de África 7, E-41011 Seville, Spain.
| | - Juan Luis Santos
- Department of Analytical Chemistry, Escuela Politécnica Superior, University of Seville, C/ Virgen de África 7, E-41011 Seville, Spain
| | - Irene Aparicio
- Department of Analytical Chemistry, Escuela Politécnica Superior, University of Seville, C/ Virgen de África 7, E-41011 Seville, Spain
| | - Esteban Alonso
- Department of Analytical Chemistry, Escuela Politécnica Superior, University of Seville, C/ Virgen de África 7, E-41011 Seville, Spain
| | - Alberto Zafra-Gómez
- Department of Analytical Chemistry, University of Granada, Sciences Faculty, E-18071 Granada, Spain; Instituto de Investigación Biosanitaria, Ibs.Granada, E-18016 Granada, Spain.
| |
Collapse
|
28
|
Ghilardi M, Salter MA, Parravicini V, Ferse SCA, Rixen T, Wild C, Birkicht M, Perry CT, Berry A, Wilson RW, Mouillot D, Bejarano S. Temperature, species identity and morphological traits predict carbonate excretion and mineralogy in tropical reef fishes. Nat Commun 2023; 14:985. [PMID: 36813767 PMCID: PMC9947118 DOI: 10.1038/s41467-023-36617-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 02/08/2023] [Indexed: 02/24/2023] Open
Abstract
Anthropogenic pressures are restructuring coral reefs globally. Sound predictions of the expected changes in key reef functions require adequate knowledge of their drivers. Here we investigate the determinants of a poorly-studied yet relevant biogeochemical function sustained by marine bony fishes: the excretion of intestinal carbonates. Compiling carbonate excretion rates and mineralogical composition from 382 individual coral reef fishes (85 species and 35 families), we identify the environmental factors and fish traits that predict them. We find that body mass and relative intestinal length (RIL) are the strongest predictors of carbonate excretion. Larger fishes and those with longer intestines excrete disproportionately less carbonate per unit mass than smaller fishes and those with shorter intestines. The mineralogical composition of excreted carbonates is highly conserved within families, but also controlled by RIL and temperature. These results fundamentally advance our understanding of the role of fishes in inorganic carbon cycling and how this contribution will change as community composition shifts under increasing anthropogenic pressures.
Collapse
Affiliation(s)
- Mattia Ghilardi
- Leibniz Centre for Tropical Marine Research (ZMT), Fahrenheitstraße 6, 28359, Bremen, Germany. .,Department of Marine Ecology, Faculty of Biology and Chemistry, University of Bremen, Leobener Straße UFT, 28359, Bremen, Germany.
| | | | - Valeriano Parravicini
- PSL Université Paris: EPHE-UPVD-CNRS, USR3278 CRIOBE, University of Perpignan, 66860, Perpignan, France.,Institut Universitaire de France, Paris, France
| | - Sebastian C A Ferse
- Leibniz Centre for Tropical Marine Research (ZMT), Fahrenheitstraße 6, 28359, Bremen, Germany.,Department of Marine Ecology, Faculty of Biology and Chemistry, University of Bremen, Leobener Straße UFT, 28359, Bremen, Germany
| | - Tim Rixen
- Leibniz Centre for Tropical Marine Research (ZMT), Fahrenheitstraße 6, 28359, Bremen, Germany
| | - Christian Wild
- Department of Marine Ecology, Faculty of Biology and Chemistry, University of Bremen, Leobener Straße UFT, 28359, Bremen, Germany
| | - Matthias Birkicht
- Leibniz Centre for Tropical Marine Research (ZMT), Fahrenheitstraße 6, 28359, Bremen, Germany
| | - Chris T Perry
- Geography, University of Exeter, Exeter, EX4 4RJ, UK
| | - Alex Berry
- Biosciences, University of Exeter, Exeter, EX4 4QD, UK
| | - Rod W Wilson
- Biosciences, University of Exeter, Exeter, EX4 4QD, UK
| | - David Mouillot
- Institut Universitaire de France, Paris, France.,MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, 34095, Montpellier, France
| | - Sonia Bejarano
- Leibniz Centre for Tropical Marine Research (ZMT), Fahrenheitstraße 6, 28359, Bremen, Germany
| |
Collapse
|
29
|
Molina JM, Kunzmann A, Reis JP, Guerreiro PM. Metabolic Responses and Resilience to Environmental Challenges in the Sedentary Batrachoid Halobatrachus didactylus (Bloch & Schneider, 1801). Animals (Basel) 2023; 13:ani13040632. [PMID: 36830420 PMCID: PMC9951689 DOI: 10.3390/ani13040632] [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: 12/26/2022] [Revised: 02/06/2023] [Accepted: 02/10/2023] [Indexed: 02/16/2023] Open
Abstract
In the context of climate change, warming of the seas and expansion of hypoxic zones are challenges that most species of fish are, or will be subjected to. Understanding how different species cope with these changes in their environment at the individual level can shed light on how populations and ecosystems will be affected. We provide first-time estimates on the metabolic rates, thermal, and oxygen-related limits for Halobatrachus didactylus, a coastal sedentary fish that lives in intertidal environments of the Northeast Atlantic. Using respirometry in different experimental designs, we found that this species is highly resistant to acute thermal stress (CTmax: 34.82 ± 0.66 °C) and acute hypoxia (Pcrit: 0.59-1.97 mg O2 L-1). We found size-specific differences in this stress response, with smaller individuals being more sensitive. We also quantified its aerobic scope and daily activity patterns, finding this fish to be extremely sedentary, with one of the lowest standard metabolic rates found in temperate fish (SMR: 14.96 mg O2 kg-1h-1). H. didactylus activity increases at night, when its metabolic rate increases drastically (RMR: 36.01 mg O2 kg-1h-1). The maximum metabolic rate of H. didactylus was estimated to be 67.31 mg O2 kg-1h-1, producing an aerobic scope of 52.35 mg O2 kg-1h-1 (77.8% increase). The metrics obtained in this study prove that H. didactylus is remarkably resilient to acute environmental variations in temperature and oxygen content, which might enable it to adapt to the extreme abiotic conditions forecasted for the world's oceans in the near future.
Collapse
Affiliation(s)
- Juan Manuel Molina
- Instituto Argentino de Oceanografía (CONICET), Bahía Blanca B8000, Argentina
- Leibniz-Zentrum für Marine Tropenforschung (ZMT), 28359 Bremen, Germany
- Centro de Ciências do Mar (CCMAR), Universidade do Algarve, 8005-139 Faro, Portugal
- Correspondence:
| | - Andreas Kunzmann
- Leibniz-Zentrum für Marine Tropenforschung (ZMT), 28359 Bremen, Germany
| | - João Pena Reis
- Centro de Ciências do Mar (CCMAR), Universidade do Algarve, 8005-139 Faro, Portugal
| | | |
Collapse
|
30
|
Brandl SJ, Lefcheck JS, Bates AE, Rasher DB, Norin T. Can metabolic traits explain animal community assembly and functioning? Biol Rev Camb Philos Soc 2023; 98:1-18. [PMID: 36054431 DOI: 10.1111/brv.12892] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 07/28/2022] [Accepted: 08/01/2022] [Indexed: 01/12/2023]
Abstract
All animals on Earth compete for free energy, which is acquired, assimilated, and ultimately allocated to growth and reproduction. Competition is strongest within communities of sympatric, ecologically similar animals of roughly equal size (i.e. horizontal communities), which are often the focus of traditional community ecology. The replacement of taxonomic identities with functional traits has improved our ability to decipher the ecological dynamics that govern the assembly and functioning of animal communities. Yet, the use of low-resolution and taxonomically idiosyncratic traits in animals may have hampered progress to date. An animal's metabolic rate (MR) determines the costs of basic organismal processes and activities, thus linking major aspects of the multifaceted constructs of ecological niches (where, when, and how energy is obtained) and ecological fitness (how much energy is accumulated and passed on to future generations). We review evidence from organismal physiology to large-scale analyses across the tree of life to propose that MR gives rise to a group of meaningful functional traits - resting metabolic rate (RMR), maximum metabolic rate (MMR), and aerobic scope (AS) - that may permit an improved quantification of the energetic basis of species coexistence and, ultimately, the assembly and functioning of animal communities. Specifically, metabolic traits integrate across a variety of typical trait proxies for energy acquisition and allocation in animals (e.g. body size, diet, mobility, life history, habitat use), to yield a smaller suite of continuous quantities that: (1) can be precisely measured for individuals in a standardized fashion; and (2) apply to all animals regardless of their body plan, habitat, or taxonomic affiliation. While integrating metabolic traits into animal community ecology is neither a panacea to disentangling the nuanced effects of biological differences on animal community structure and functioning, nor without challenges, a small number of studies across different taxa suggest that MR may serve as a useful proxy for the energetic basis of competition in animals. Thus, the application of MR traits for animal communities can lead to a more general understanding of community assembly and functioning, enhance our ability to trace eco-evolutionary dynamics from genotypes to phenotypes (and vice versa), and help predict the responses of animal communities to environmental change. While trait-based ecology has improved our knowledge of animal communities to date, a more explicit energetic lens via the integration of metabolic traits may further strengthen the existing framework.
Collapse
Affiliation(s)
- Simon J Brandl
- Department of Marine Science, The University of Texas at Austin, Marine Science Institute, Port Aransas, TX, 78373, USA
| | - Jonathan S Lefcheck
- Tennenbaum Marine Observatories Network and MarineGEO Program, Smithsonian Environmental Research Center, Edgewater, MD, 21037, USA
| | - Amanda E Bates
- Biology Department, University of Victoria, 3800 Finnerty Road, Victoria, BC, V8P 5C2, Canada
| | - Douglas B Rasher
- Bigelow Laboratory for Ocean Sciences, East Boothbay, ME, 04544, USA
| | - Tommy Norin
- DTU Aqua: National Institute of Aquatic Resources, Technical University of Denmark, 2800, Kongens Lyngby, Denmark
| |
Collapse
|
31
|
Limited effects of size-selective harvesting and harvesting-induced life-history changes on the temporal variability of biomass dynamics in complex food webs. Ecol Modell 2023. [DOI: 10.1016/j.ecolmodel.2022.110150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
32
|
Christensen AB, Taylor G, Lamare M, Byrne M. The added costs of winter ocean warming for metabolism, arm regeneration and survival in the brittle star Ophionereis schayeri. J Exp Biol 2023; 226:287003. [PMID: 36651231 DOI: 10.1242/jeb.244613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 01/12/2023] [Indexed: 01/19/2023]
Abstract
As the climate continues to change, it is not just the magnitude of these changes that is important - equally critical is the timing of these events. Conditions that may be well tolerated at one time can become detrimental if experienced at another, as a result of seasonal acclimation. Temperature is the most critical variable as it affects most aspects of an organism's physiology. To address this, we quantified arm regeneration and respiration in the Australian brittle star Ophionereis schayeri for 10 weeks in response to a +3°C warming (18.5°C, simulating a winter heatwave) compared with ambient winter temperature (15.5°C). The metabolic scaling rate (b=0.635 at 15.5°C and 0.746 at 18.5°C) with respect to size was similar to that of other echinoderms and was not affected by temperature. Elevated temperature resulted in up to a 3-fold increase in respiration and a doubling of regeneration growth; however, mortality was greater (up to 44.2% at 18.5°C), especially in the regenerating brittle stars. Metabolic rate of the brittle stars held at 18.5°C was much higher than expected (Q10≈23) and similar to that of O. schayeri tested in summer, which was near their estimated thermotolerance limits. The additional costs associated with the elevated metabolism and regeneration rates incurred by the unseasonably warm winter temperatures may lead to increased mortality and predation risk.
Collapse
Affiliation(s)
| | - Georgie Taylor
- Department of Marine Science, University of Otago, Dunedin 9054, New Zealand
| | - Miles Lamare
- Department of Marine Science, University of Otago, Dunedin 9054, New Zealand
| | - Maria Byrne
- School of Life and Environmental Sciences, The University of Sydney, Sydney, NSW 2006, Australia
| |
Collapse
|
33
|
Rairat T, Hsieh MK, Ho WC, Lu YP, Fu ZY, Chuchird N, Chou CC. Effects of temperature on the pharmacokinetics, optimal dosage, tissue residue, and withdrawal time of florfenicol in asian seabass ( lates calcarifer). Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2023; 40:235-246. [PMID: 36520459 DOI: 10.1080/19440049.2022.2155710] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Drug behavior in the bodies of fish is largely influenced by the water temperature. Antimicrobial drugs are needed for the control of bacterial outbreaks in farmed fish including Asian seabass (Lates calcarifer). However, little is known about the temperature effect on appropriate drug uses in this species. The purpose of this study was to investigate the differences in pharmacokinetics (PK), optimal dosages, tissue depletion, and withdrawal time (WDT) of florfenicol (FF) in Asian seabass reared at 25 and 30 °C. In the PK study, the fish were administered with a single oral dose of 10 mg/kg FF. The optimal dosing regimen was determined by the pharmacokinetic-pharmacodynamic (PK-PD) approach. In the tissue depletion and WDT study, FF was administered at the optimal dosages once daily for 5 days and the WDT was determined by linear regression analysis based on the sum of FF and its metabolite florfenicol amine (FFA) in the muscle/skin. When the temperature was increased from 25 to 30 °C, the elimination half-life of FF was significantly decreased from 11.0 to 7.2 h. While the other PK parameters were not changed significantly, the calculated optimal dosages for the target minimum inhibitory concentration (MIC) of 2 µg/mL were 10.9 and 22.0 mg/kg/day, respectively for 25 and 30 °C. The sum of FF + FFA is a preferable marker residue for WDT determination because differential FF metabolism was observed at different temperatures. The depletion half-life of the muscle/skin was shortened from 41.1 to 32.4 h by the 5 °C temperature increase. Despite different absolute amounts of FF given between the two temperature levels, the WDTs were very similar at 6-7 days. Thus, it appears that a single temperature-independent WDT can potentially be assigned when the drug was applied at the optimal dosage.
Collapse
Affiliation(s)
- Tirawat Rairat
- Department of Fishery Biology, Faculty of Fisheries, Kasetsart University, Bangkok, Thailand
| | - Ming-Kun Hsieh
- Graduate Institute of Microbiology and Public Health, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Wan-Cih Ho
- Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Yi-Ping Lu
- Biology Division, Animal Health Research Institute, Council of Agriculture, Executive Yuan, New Taipei City, Taiwan
| | - Zhu-Ying Fu
- Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Niti Chuchird
- Department of Fishery Biology, Faculty of Fisheries, Kasetsart University, Bangkok, Thailand
| | - Chi-Chung Chou
- Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| |
Collapse
|
34
|
Tian W, Zhang H, Wang Z, Tian Y, Huang T. Analysis on the stability of plankton in a food web with empirical organism body mass distribution. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:21327-21343. [PMID: 36269477 DOI: 10.1007/s11356-022-23696-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 10/13/2022] [Indexed: 06/16/2023]
Abstract
The mechanism supporting the stability of complex food webs is an important, yet still controversial issue in ecology. Integrating the bioenergetic model with a natural plankton food web with empirical organism body mass distribution, we studied the effects of taxa diversity, nutrient enrichment simulation and connectance on the stability of plankton, and the underlying mechanisms. The behavior and functions of plankton with different body masses in the system were also explored. The results showed that genus richness promoted the temporal stability of community but reduced that of population. Meanwhile, the effects of taxon extinction on community biomass and temporal stability depended on the body masses of those lost taxa. Enrichment decreased phytoplankton and zooplankton community stability directly by increasing the temporal variability of biomass and indirectly by reducing taxa diversity. Enrichment preferentially caused phytoplankton taxa with the highest individual biomass to go extinct and the ones with smaller to increase in biomass. The effects, as well as the underlying mechanisms of connectance on phytoplankton and zooplankton stability were different. High connectance promoted the persistence and biomasses of both zooplankton and small-bodied phytoplankton but reduced those of larger-bodied phytoplankton. The results and methodology in this research will be helpful in understanding and analyzing the stability of plankton communities.
Collapse
Affiliation(s)
- Wang Tian
- Research Center for Engineering Ecology and Nonlinear Science, North China Electric Power University, Beijing, 102206, People's Republic of China
| | - Huayong Zhang
- Research Center for Engineering Ecology and Nonlinear Science, North China Electric Power University, Beijing, 102206, People's Republic of China.
| | - Zhongyu Wang
- Research Center for Engineering Ecology and Nonlinear Science, North China Electric Power University, Beijing, 102206, People's Republic of China
| | - Yonglan Tian
- Research Center for Engineering Ecology and Nonlinear Science, North China Electric Power University, Beijing, 102206, People's Republic of China
| | - Tousheng Huang
- Research Center for Engineering Ecology and Nonlinear Science, North China Electric Power University, Beijing, 102206, People's Republic of China
| |
Collapse
|
35
|
Hunting behavior of a solitary sailfish Istiophorus platypterus and estimated energy gain after prey capture. Sci Rep 2023; 13:1484. [PMID: 36707627 PMCID: PMC9883507 DOI: 10.1038/s41598-023-28748-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 01/24/2023] [Indexed: 01/29/2023] Open
Abstract
Foraging behavior and interaction with prey is an integral component of the ecological niche of predators but is inherently difficult to observe for highly mobile animals in the marine environment. Billfishes have been described as energy speculators, expending a large amount of energy foraging, expecting to offset high costs with periodic high energetic gain. Surface-based group feeding of sailfish, Istiophorus platypterus, is commonly observed, yet sailfish are believed to be largely solitary roaming predators with high metabolic requirements, suggesting that individual foraging also represents a major component of predator-prey interactions. Here, we use biologging data and video to examine daily activity levels and foraging behavior, estimate metabolic costs, and document a solitary predation event for a 40 kg sailfish. We estimate a median active metabolic rate of 218.9 ± 70.5 mgO2 kg-1 h-1 which increased to 518.8 ± 586.3 mgO2 kg-1 h-1 during prey pursuit. Assuming a successful predation, we estimate a daily net energy gain of 2.4 MJ (5.1 MJ acquired, 2.7 MJ expended), supporting the energy speculator model. While group hunting may be a common activity used by sailfish to acquire energy, our calculations indicate that opportunistic individual foraging events offer a net energy return that contributes to the fitness of these highly mobile predators.
Collapse
|
36
|
Agiadi K, Quillévéré F, Nawrot R, Sommeville T, Coll M, Koskeridou E, Fietzke J, Zuschin M. Palaeontological evidence for community-level decrease in mesopelagic fish size during Pleistocene climate warming in the eastern Mediterranean. Proc Biol Sci 2023; 290:20221994. [PMID: 36629116 PMCID: PMC9832546 DOI: 10.1098/rspb.2022.1994] [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] [Indexed: 01/12/2023] Open
Abstract
Mesopelagic fishes are an important element of marine food webs, a huge, still mostly untapped food resource and great contributors to the biological carbon pump, whose future under climate change scenarios is unknown. The shrinking of commercial fishes within decades has been an alarming observation, but its causes remain contended. Here, we investigate the effect of warming climate on mesopelagic fish size in the eastern Mediterranean Sea during a glacial-interglacial-glacial transition of the Middle Pleistocene (marine isotope stages 20-18; 814-712 kyr B.P.), which included a 4°C increase in global seawater temperature. Our results based on fossil otoliths show that the median size of lanternfishes, one of the most abundant groups of mesopelagic fishes in fossil and modern assemblages, declined by approximately 35% with climate warming at the community level. However, individual mesopelagic species showed different and often opposing trends in size across the studied time interval, suggesting that climate warming in the interglacial resulted in an ecological shift toward increased relative abundance of smaller sized mesopelagic fishes due to geographical and/or bathymetric distribution range shifts, and the size-dependent effects of warming.
Collapse
Affiliation(s)
- Konstantina Agiadi
- Department of Palaeontology, University of Vienna, Josef-Holaubek-Platz 2, UZA II, 1090, Vienna, Austria
| | - Frédéric Quillévéré
- Université Claude Bernard Lyon 1, ENS de Lyon, CNRS, UMR 5276 LGL-TPE, 69622 Villeurbanne, France
| | - Rafał Nawrot
- Department of Palaeontology, University of Vienna, Josef-Holaubek-Platz 2, UZA II, 1090, Vienna, Austria
| | - Theo Sommeville
- Department of Palaeontology, University of Vienna, Josef-Holaubek-Platz 2, UZA II, 1090, Vienna, Austria,IMBRSea Program, Ghent University - Marine Biology Research Group, Krijgslaan 281/S8, 9000 Ghent, Belgium
| | - Marta Coll
- Institute of Marine Sciences (ICM-CSIC), Passeig Marítim de la Barceloneta 37-49, 08003, Barcelona, Spain
| | - Efterpi Koskeridou
- Department of Historical Geology and Paleontology, National and Kapodistrian University of Athens, Panepistimioupolis, 15784, Athens, Greece
| | - Jan Fietzke
- GEOMAR, Helmholtz Centre for Ocean Research Kiel, Wischhofstrasse 1-3, 24148 Kiel, Germany
| | - Martin Zuschin
- Department of Palaeontology, University of Vienna, Josef-Holaubek-Platz 2, UZA II, 1090, Vienna, Austria
| |
Collapse
|
37
|
Enders EC, Durhack TC. Metabolic rate and critical thermal maximum CTmax estimates for westslope cutthroat trout, Oncorhynchus clarkii lewisi. CONSERVATION PHYSIOLOGY 2022; 10:coac071. [PMID: 36570737 PMCID: PMC9773365 DOI: 10.1093/conphys/coac071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 09/23/2022] [Accepted: 10/26/2022] [Indexed: 06/17/2023]
Abstract
Global warming is changing the thermal habitat of cold-water freshwater fishes, which can lead to decreased fitness and survival and cause shifts in species distributions. The Alberta population of westslope cutthroat trout (Oncorhynchus clarkii lewisi) is listed as 'Threatened' under the Canadian Species at Risk Act. The major threats to the species are the alteration in habitat and water flow, competition and hybridization with non-native trout species and climate change. Here, we conducted (i) intermittent-flow respirometry experiments with adult native westslope cutthroat trout and non-native rainbow trout (Oncorhynchus mykiss) and (ii) critical thermal maximum experiments (CTmax ) with adult westslope cutthroat trout to obtain valuable input data for species distribution models. For both species, standard metabolic rate (SMR) was lower at 10°C compared to 15°C and westslope cutthroat trout had higher SMR than rainbow trout. Although there were inter-specific differences in SMR, forced aerobic scope (using a standardized chase protocol) was different at 10°C, but no significant differences were observed at 15°C because of relative smaller differences in maximum metabolic rate between the species. CTmax of westslope cutthroat trout acclimated to 10°C was 27.0 ± 0.8°C and agitation temperature was 25.2 ± 1.0°C. The results from this study will inform and parametrize cumulative effects assessments and bioenergetics habitat modelling for the recovery planning of the species.
Collapse
Affiliation(s)
- Eva C Enders
- Corresponding author: Institute National de la Recherche Scientifique, Centre Eau Terre Environnement, Québec, Québec, G1K 9A9, Canada.
| | - Travis C Durhack
- Fisheries and Oceans Canada, Freshwater Institute, Winnipeg Manitoba, R3T 2N6, Canada
| |
Collapse
|
38
|
Thermal physiology integrated species distribution model predicts profound habitat fragmentation for estuarine fish with ocean warming. Sci Rep 2022; 12:21781. [PMID: 36526639 PMCID: PMC9758224 DOI: 10.1038/s41598-022-25419-4] [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: 08/22/2022] [Accepted: 11/29/2022] [Indexed: 12/23/2022] Open
Abstract
Species distribution models predict a poleward migration for marine ectotherms with ocean warming. However, a key limitation in current species distribution models (SDM) is that they do not account for population-specific heterogeneity in physiological responses to temperature change resulting from local adaptations and acclimatization. To address this gap, we developed a novel, Physiology Integrated BioClimate Model (PIBCM) that combines habitat-specific metabolic thermal physiological tolerance of a species into a bioclimate envelope model. Using a downscaling approach, we also established a fine-resolution coastal sea-surface temperature data set for 2050-2080, that showed a high degree of location-specific variability in future thermal regimes. Combining predicted temperature data with the PIBCM model, we estimated habitat distribution for a highly eurythermal intertidal minnow, the Atlantic killifish (Fundulus heteroclitus), a species that likely presents a best-case-scenario for coastal vertebrates. We show that the killifish northern boundary shifts southwards, while distinct habitat fragmentation occurs in the southern sub-population (due to migration of adjacent fish populations to the nearest metabolically optimal thermal habitat). When compared to current SDMs (e.g., AquaMaps), our results emphasize the need for thermal physiology integrated range shift models and indicate that habitat fragmentation for coastal fishes may reshape nursery habitats for many commercially and ecologically important species.
Collapse
|
39
|
Somo DA, Chu K, Richards JG. Aerobic scope falls to nil at Pcrit and anaerobic ATP production increases below Pcrit in the tidepool sculpin, Oligocottus maculosus. Biol Lett 2022; 18:20220342. [PMID: 36475421 PMCID: PMC9727657 DOI: 10.1098/rsbl.2022.0342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The critical oxygen tension of whole-animal oxygen uptake rate, or Pcrit, has historically been defined as the oxygen partial pressure (PO2) at which aerobic scope falls to zero and further declines in PO2 require substrate-level phosphorylation to meet shortfalls in aerobic ATP production, thereby time-limiting survival. Despite the inclusion of aerobic scope and anaerobic ATP production in the definition, little effort has been made to verify that Pcrit measurements, the vast majority of which are obtained using respirometry in resting animals, actually reflect the predictions of zero aerobic scope and a transition to increasing reliance on anaerobic ATP production. To test these predictions, we compared aerobic scope and levels of whole-body lactate at oxygen partial pressures (PO2s) bracketing Pcrit obtained in resting fish during progressive hypoxia in the tidepool sculpin, Oligocottus maculosus. We found that aerobic scope falls to zero at Pcrit and, in resting fish exposed to PO2s < Pcrit, whole-body lactate accumulated pointing to an increased reliance on anaerobic ATP production. These results support the interpretation of Pcrit as a key oxygen threshold at which aerobic scope falls to nil and, below Pcrit, survival is time-limited based on anaerobic metabolic capacity.
Collapse
Affiliation(s)
- Derek A. Somo
- Department of Zoology, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z4
| | - Ken Chu
- Department of Zoology, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z4
| | - Jeffrey G. Richards
- Department of Zoology, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z4
| |
Collapse
|
40
|
Godin JGJ, Le Roy A, Burns AL, Seebacher F, Ward AJ. Pace-of-life syndrome: linking personality, metabolism and colour ornamentation in male guppies. Anim Behav 2022. [DOI: 10.1016/j.anbehav.2022.09.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
41
|
Shokri M, Cozzoli F, Vignes F, Bertoli M, Pizzul E, Basset A. Metabolic rate and climate change across latitudes: evidence of mass-dependent responses in aquatic amphipods. J Exp Biol 2022; 225:280993. [PMID: 36337048 PMCID: PMC9720750 DOI: 10.1242/jeb.244842] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 10/28/2022] [Indexed: 11/09/2022]
Abstract
Predictions of individual responses to climate change are often based on the assumption that temperature affects the metabolism of individuals independently of their body mass. However, empirical evidence indicates that interactive effects exist. Here, we investigated the response of individual standard metabolic rate (SMR) to annual temperature range and forecasted temperature rises of 0.6-1.2°C above the current maxima, under the conservative climate change scenario IPCC RCP2.6. As a model organism, we used the amphipod Gammarus insensibilis, collected across latitudes along the western coast of the Adriatic Sea down to the southernmost limit of the species' distributional range, with individuals varying in body mass (0.4-13.57 mg). Overall, we found that the effect of temperature on SMR is mass dependent. Within the annual temperature range, the mass-specific SMR of small/young individuals increased with temperature at a greater rate (activation energy: E=0.48 eV) than large/old individuals (E=0.29 eV), with a higher metabolic level for high-latitude than low-latitude populations. However, under the forecasted climate conditions, the mass-specific SMR of large individuals responded differently across latitudes. Unlike the higher-latitude population, whose mass-specific SMR increased in response to the forecasted climate change across all size classes, in the lower-latitude populations, this increase was not seen in large individuals. The larger/older conspecifics at lower latitudes could therefore be the first to experience the negative impacts of warming on metabolism-related processes. Although the ecological collapse of such a basic trophic level (aquatic amphipods) owing to climate change would have profound consequences for population ecology, the risk is significantly mitigated by phenotypic and genotypic adaptation.
Collapse
Affiliation(s)
- Milad Shokri
- Laboratory of Ecology, Department of Biological and Environmental Sciences and Technologies, University of Salento, S.P. Lecce-Monteroni, 73100 Lecce, Italy,Authors for correspondence (; )
| | - Francesco Cozzoli
- Laboratory of Ecology, Department of Biological and Environmental Sciences and Technologies, University of Salento, S.P. Lecce-Monteroni, 73100 Lecce, Italy,Research Institute on Terrestrial Ecosystems (IRET–URT Lecce), National Research Council of Italy (CNR), Campus Ecotekne, S.P. Lecce-Monteroni, 73100 Lecce, Italy,Authors for correspondence (; )
| | - Fabio Vignes
- Laboratory of Ecology, Department of Biological and Environmental Sciences and Technologies, University of Salento, S.P. Lecce-Monteroni, 73100 Lecce, Italy
| | - Marco Bertoli
- Department of Life Science, University of Trieste, Via Giorgieri 10, 34127 Trieste, Italy
| | - Elisabetta Pizzul
- Department of Life Science, University of Trieste, Via Giorgieri 10, 34127 Trieste, Italy
| | - Alberto Basset
- Laboratory of Ecology, Department of Biological and Environmental Sciences and Technologies, University of Salento, S.P. Lecce-Monteroni, 73100 Lecce, Italy,National Biodiversity Future Center, Palermo 90133, Italy
| |
Collapse
|
42
|
Pardo SA, Dulvy NK. Body mass, temperature, and depth shape the maximum intrinsic rate of population increase in sharks and rays. Ecol Evol 2022; 12:e9441. [PMCID: PMC9618967 DOI: 10.1002/ece3.9441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 08/22/2022] [Indexed: 11/12/2022] Open
Abstract
An important challenge in ecology is to understand variation in species' maximum intrinsic rate of population increase, rmax, not least because rmax underpins our understanding of the limits of fishing, recovery potential, and ultimately extinction risk. Across many vertebrate species, terrestrial and aquatic, body mass and environmental temperature are important correlates of rmax. In sharks and rays, specifically, rmax is known to be lower in larger species, but also in deep sea ones. We use an information‐theoretic approach that accounts for phylogenetic relatedness to evaluate the relative importance of body mass, temperature, and depth on rmax. We show that both temperature and depth have separate effects on shark and ray rmax estimates, such that species living in deeper waters have lower rmax. Furthermore, temperature also correlates with changes in the mass scaling coefficient, suggesting that as body size increases, decreases in rmax are much steeper for species in warmer waters. These findings suggest that there are (as‐yet understood) depth‐related processes that limit the maximum rate at which populations can grow in deep‐sea sharks and rays. While the deep ocean is associated with colder temperatures, other factors that are independent of temperature, such as food availability and physiological constraints, may influence the low rmax observed in deep‐sea sharks and rays. Our study lays the foundation for predicting the intrinsic limit of fishing, recovery potential, and extinction risk species based on easily accessible environmental information such as temperature and depth, particularly for data‐poor species.
Collapse
Affiliation(s)
- Sebastián A. Pardo
- Earth to Ocean Research Group, Department of Biological SciencesSimon Fraser UniversityBurnabyBritish ColumbiaCanada,Ecology Action CentreHalifaxNova ScotiaCanada
| | - Nicholas K. Dulvy
- Earth to Ocean Research Group, Department of Biological SciencesSimon Fraser UniversityBurnabyBritish ColumbiaCanada
| |
Collapse
|
43
|
Glazier DS. Variable metabolic scaling breaks the law: from 'Newtonian' to 'Darwinian' approaches. Proc Biol Sci 2022; 289:20221605. [PMID: 36259209 PMCID: PMC9579773 DOI: 10.1098/rspb.2022.1605] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Life's size and tempo are intimately linked. The rate of metabolism varies with body mass in remarkably regular ways that can often be described by a simple power function, where the scaling exponent (b, slope in a log-linear plot) is typically less than 1. Traditional theory based on physical constraints has assumed that b is 2/3 or 3/4, following natural law, but hundreds of studies have documented extensive, systematic variation in b. This overwhelming, law-breaking, empirical evidence is causing a paradigm shift in metabolic scaling theory and methodology from ‘Newtonian’ to ‘Darwinian’ approaches. A new wave of studies focuses on the adaptable regulation and evolution of metabolic scaling, as influenced by diverse intrinsic and extrinsic factors, according to multiple context-dependent mechanisms, and within boundary limits set by physical constraints.
Collapse
|
44
|
Morbey YE, Pauly D. Juvenile-to-adult transition invariances in fishes: Perspectives on proximate and ultimate causation. JOURNAL OF FISH BIOLOGY 2022; 101:874-884. [PMID: 35762307 DOI: 10.1111/jfb.15146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 06/24/2022] [Indexed: 06/15/2023]
Abstract
To bridge physiological and evolutionary perspectives on size at maturity in fishes, the authors focus on the approximately invariant ratio between the estimated oxygen supply at size at maturity (Qm ) relative to that at asymptotic size (Q∞ ) among species within a taxonomic group, and show how two important theories related to this phenomenon complement each other. Gill-oxygen limitation theory proposes a mechanistic basis for a universal oxygen supply-based threshold for maturation, which applies among and within species. On the contrary, the authors show that a generalisation of life-history theory for the invariance of size at maturity (Lm ) relative to asymptotic size (L∞ ) can provide an evolutionary rationale for an oxygen-limited maturation threshold (Qm /Q∞ ). Extending previous inter- and intraspecific analyses, the authors show that maturation invariances also occur in lake whitefish Coregonus clupeaformis (Mitchill 1818), but at both scales, theory seems to underestimate the value of the maturation threshold. They highlight some key uncertainties in the model that should be addressed to help resolve the mismatch.
Collapse
Affiliation(s)
- Yolanda E Morbey
- Department of Biology, Western University, London, Ontario, Canada
| | - Daniel Pauly
- Institute for the Oceans and Fisheries, University of British Columbia, Vancouver, British Columbia, Canada
| |
Collapse
|
45
|
Verberk WCEP, Sandker JF, van de Pol ILE, Urbina MA, Wilson RW, McKenzie DJ, Leiva FP. Body mass and cell size shape the tolerance of fishes to low oxygen in a temperature-dependent manner. GLOBAL CHANGE BIOLOGY 2022; 28:5695-5707. [PMID: 35876025 PMCID: PMC9542040 DOI: 10.1111/gcb.16319] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 03/11/2022] [Accepted: 05/22/2022] [Indexed: 05/04/2023]
Abstract
Aerobic metabolism generates 15-20 times more energy (ATP) than anaerobic metabolism, which is crucial in maintaining energy budgets in animals, fueling metabolism, activity, growth and reproduction. For ectothermic water-breathers such as fishes, low dissolved oxygen may limit oxygen uptake and hence aerobic metabolism. Here, we assess, within a phylogenetic context, how abiotic and biotic drivers explain the variation in hypoxia tolerance observed in fishes. To do so, we assembled a database of hypoxia tolerance, measured as critical oxygen tensions (Pcrit ) for 195 fish species. Overall, we found that hypoxia tolerance has a clear phylogenetic signal and is further modulated by temperature, body mass, cell size, salinity and metabolic rate. Marine fishes were more susceptible to hypoxia than freshwater fishes. This pattern is consistent with greater fluctuations in oxygen and temperature in freshwater habitats. Fishes with higher oxygen requirements (e.g. a high metabolic rate relative to body mass) also were more susceptible to hypoxia. We also found evidence that hypoxia and warming can act synergistically, as hypoxia tolerance was generally lower in warmer waters. However, we found significant interactions between temperature and the body and cell size of a fish. Constraints in oxygen uptake related to cellular surface area to volume ratios and effects of viscosity on the thickness of the boundary layers enveloping the gills could explain these thermal dependencies. The lower hypoxia tolerance in warmer waters was particularly pronounced for fishes with larger bodies and larger cell sizes. Previous studies have found a wide diversity in the direction and strength of relationships between Pcrit and body mass. By including interactions with temperature, our study may help resolve these divergent findings, explaining the size dependency of hypoxia tolerance in fish.
Collapse
Affiliation(s)
- Wilco C. E. P. Verberk
- Department of Animal Ecology and PhysiologyRadboud Institute for Biological and Environmental SciencesRadboud University NijmegenNijmegenThe Netherlands
| | - Jeroen F. Sandker
- Department of Animal Ecology and PhysiologyRadboud Institute for Biological and Environmental SciencesRadboud University NijmegenNijmegenThe Netherlands
| | - Iris L. E. van de Pol
- Department of Animal Ecology and PhysiologyRadboud Institute for Biological and Environmental SciencesRadboud University NijmegenNijmegenThe Netherlands
| | - Mauricio A. Urbina
- Departamento de Zoología, Facultad de Ciencias Naturales y OceanográficasUniversidad de ConcepciónConcepciónChile
- Instituto Milenio de Oceanografía (IMO)Universidad de ConcepciónConcepciónChile
| | | | - David J. McKenzie
- MARBEC, University of Montpellier, CNRS, IFREMER, IRDMontpellierFrance
| | - Félix P. Leiva
- Department of Animal Ecology and PhysiologyRadboud Institute for Biological and Environmental SciencesRadboud University NijmegenNijmegenThe Netherlands
| |
Collapse
|
46
|
Iosilevskii G, Kong JD, Meyer CG, Watanabe YY, Papastamatiou YP, Royer MA, Nakamura I, Sato K, Doyle TK, Harman L, Houghton JDR, Barnett A, Semmens JM, Maoiléidigh NÓ, Drumm A, O'Neill R, Coffey DM, Payne NL. A general swimming response in exhausted obligate swimming fish. ROYAL SOCIETY OPEN SCIENCE 2022. [PMID: 36147936 DOI: 10.5061/dryad.7pvmcvdv4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Marine organisms normally swim at elevated speeds relative to cruising speeds only during strenuous activity, such as predation or escape. We measured swimming speeds of 29 ram ventilating sharks from 10 species and of three Atlantic bluefin tunas immediately after exhaustive exercise (fighting a capture by hook-and-line) and unexpectedly found all individuals exhibited a uniform mechanical response, with swimming speed initially two times higher than the cruising speeds reached approximately 6 h later. We hypothesized that elevated swimming behaviour is a means to increase energetic demand and drive the removal of lactate accumulated during capture via oxidation. To explore this hypothesis, we estimated the mechanical work that must have been spent by an animal to elevate its swim speed and then showed that the amount of lactate that could have been oxidized to fuel it comprises a significant portion of the amount of lactate normally observed in fishes after exhaustive exercise. An estimate for the full energetic cost of the catch-and-release event ensued.
Collapse
Affiliation(s)
- G Iosilevskii
- Department of Aerospace Engineering, Technion Haifa, 32000 Israel
| | - J D Kong
- School of Natural Sciences, Trinity College Dublin, Dublin, Ireland
| | - C G Meyer
- Hawaii Institute of Marine Biology, University of Hawaii, Kaneohe, HI 96744, USA
| | - Y Y Watanabe
- National Institute of Polar Research, Tachikawa, Japan
| | - Y P Papastamatiou
- Biological Sciences, Florida International University, Miami, FL 33180, USA
| | - M A Royer
- Hawaii Institute of Marine Biology, University of Hawaii, Kaneohe, HI 96744, USA
| | - I Nakamura
- Organization for Marine Science and Technology, Nagasaki University, Nagasaki, Nagasaki 851-2213, Japan
| | - K Sato
- International Coastal Research Center, Atmosphere and Ocean Research Institute, University of Tokyo, Iwate, Japan
| | - T K Doyle
- Zoology, Ecology and Plant Science, Environmental Research Institute, University College Cork, Cork T23 XE10, Ireland
| | - L Harman
- Zoology, Ecology and Plant Science, Environmental Research Institute, University College Cork, Cork T23 XE10, Ireland
| | - J D R Houghton
- Biological Sciences, Queen's University Belfast, Belfast, County Antrim BT9 7BL, UK
| | - A Barnett
- James Cook University, Cairns, Queensland, Australia
| | - J M Semmens
- Institute of Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania 7001, Australia
| | | | - A Drumm
- Marine Institute, Newport, County Mayo, Ireland
| | - R O'Neill
- Marine Institute, Newport, County Mayo, Ireland
| | - D M Coffey
- Hawaii Institute of Marine Biology, University of Hawaii, Kaneohe, HI 96744, USA
| | - N L Payne
- School of Natural Sciences, Trinity College Dublin, Dublin, Ireland
| |
Collapse
|
47
|
Iosilevskii G, Kong JD, Meyer CG, Watanabe YY, Papastamatiou YP, Royer MA, Nakamura I, Sato K, Doyle TK, Harman L, Houghton JDR, Barnett A, Semmens JM, Maoiléidigh NÓ, Drumm A, O'Neill R, Coffey DM, Payne NL. A general swimming response in exhausted obligate swimming fish. ROYAL SOCIETY OPEN SCIENCE 2022; 9:211869. [PMID: 36147936 PMCID: PMC9490326 DOI: 10.1098/rsos.211869] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 08/25/2022] [Indexed: 05/08/2023]
Abstract
Marine organisms normally swim at elevated speeds relative to cruising speeds only during strenuous activity, such as predation or escape. We measured swimming speeds of 29 ram ventilating sharks from 10 species and of three Atlantic bluefin tunas immediately after exhaustive exercise (fighting a capture by hook-and-line) and unexpectedly found all individuals exhibited a uniform mechanical response, with swimming speed initially two times higher than the cruising speeds reached approximately 6 h later. We hypothesized that elevated swimming behaviour is a means to increase energetic demand and drive the removal of lactate accumulated during capture via oxidation. To explore this hypothesis, we estimated the mechanical work that must have been spent by an animal to elevate its swim speed and then showed that the amount of lactate that could have been oxidized to fuel it comprises a significant portion of the amount of lactate normally observed in fishes after exhaustive exercise. An estimate for the full energetic cost of the catch-and-release event ensued.
Collapse
Affiliation(s)
- G. Iosilevskii
- Department of Aerospace Engineering, Technion Haifa, 32000 Israel
| | - J. D. Kong
- School of Natural Sciences, Trinity College Dublin, Dublin, Ireland
| | - C. G. Meyer
- Hawaii Institute of Marine Biology, University of Hawaii, Kaneohe, HI 96744, USA
| | | | | | - M. A. Royer
- Hawaii Institute of Marine Biology, University of Hawaii, Kaneohe, HI 96744, USA
| | - I. Nakamura
- Organization for Marine Science and Technology, Nagasaki University, Nagasaki, Nagasaki 851-2213, Japan
| | - K. Sato
- International Coastal Research Center, Atmosphere and Ocean Research Institute, University of Tokyo, Iwate, Japan
| | - T. K. Doyle
- Zoology, Ecology and Plant Science, Environmental Research Institute, University College Cork, Cork T23 XE10, Ireland
| | - L. Harman
- Zoology, Ecology and Plant Science, Environmental Research Institute, University College Cork, Cork T23 XE10, Ireland
| | - J. D. R. Houghton
- Biological Sciences, Queen's University Belfast, Belfast, County Antrim BT9 7BL, UK
| | - A. Barnett
- James Cook University, Cairns, Queensland, Australia
| | - J. M. Semmens
- Institute of Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania 7001, Australia
| | | | - A. Drumm
- Marine Institute, Newport, County Mayo, Ireland
| | - R. O'Neill
- Marine Institute, Newport, County Mayo, Ireland
| | - D. M. Coffey
- Hawaii Institute of Marine Biology, University of Hawaii, Kaneohe, HI 96744, USA
| | - N. L. Payne
- School of Natural Sciences, Trinity College Dublin, Dublin, Ireland
| |
Collapse
|
48
|
Friesen CN, Maclaine KD, Hofmann HA. Social status mediates behavioral, endocrine, and neural responses to an intruder challenge in a social cichlid, Astatotilapia burtoni. Horm Behav 2022; 145:105241. [PMID: 35964525 DOI: 10.1016/j.yhbeh.2022.105241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 07/18/2022] [Accepted: 07/27/2022] [Indexed: 12/27/2022]
Abstract
Most animals encounter social challenges throughout their lives as they compete for resources. Individual responses to such challenges can depend on social status, sex, and community-level attributes, yet most of our knowledge of the behavioral and physiological mechanisms by which individuals respond to challenges has come from dyadic interactions between a resource holder and a challenger (usually both males). To incorporate differences in individual behavior that are influenced by surrounding group members, we use naturalistic communities of the cichlid fish, Astatotilapia burtoni, and examine resident dominant male responses to a territorial intrusion within the social group. We measured behavior and steroid hormones (testosterone and cortisol), and neural activity in key brain regions implicated in regulating territorial and social dominance behavior. In response to a male intruder, resident dominant males shifted from border defense to overt attack behavior, accompanied by decreased basolateral amygdala activity. These differences were context dependent - resident dominant males only exhibited increased border defense when the intruder secured dominance. Neither subordinate males nor females changed their behavior in response to a territorial intrusion in their community. However, neural activity in both hippocampus and lateral septum of subordinates increased when the intruder failed to establish dominance. Our results demonstrate how a social challenge results in multi-faceted behavioral, hormonal, and neural changes, depending on social status, sex, and the outcome of an intruder challenge. Taken together, our work provides novel insights into the mechanisms through which individual group members display context- and status-appropriate challenge responses in dynamic social groups.
Collapse
Affiliation(s)
- Caitlin N Friesen
- Department of Integrative Biology, The University of Texas at Austin, USA; Neuroscience Institute, Georgia State University, USA.
| | - Kendra D Maclaine
- Department of Integrative Biology, The University of Texas at Austin, USA; Institute for Cellular & Molecular Biology, The University of Texas at Austin, USA
| | - Hans A Hofmann
- Department of Integrative Biology, The University of Texas at Austin, USA; Institute for Cellular & Molecular Biology, The University of Texas at Austin, USA; Institute for Neuroscience, The University of Texas at Austin, USA.
| |
Collapse
|
49
|
White CR, Alton LA, Bywater CL, Lombardi EJ, Marshall DJ. Metabolic scaling is the product of life-history optimization. Science 2022; 377:834-839. [PMID: 35981018 DOI: 10.1126/science.abm7649] [Citation(s) in RCA: 61] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Organisms use energy to grow and reproduce, so the processes of energy metabolism and biological production should be tightly bound. On the basis of this tenet, we developed and tested a new theory that predicts the relationships among three fundamental aspects of life: metabolic rate, growth, and reproduction. We show that the optimization of these processes yields the observed allometries of metazoan life, particularly metabolic scaling. We conclude that metabolism, growth, and reproduction are inextricably linked; that together they determine fitness; and, in contrast to longstanding dogma, that no single component drives another. Our model predicts that anthropogenic change will cause animals to evolve decreased scaling exponents of metabolism, increased growth rates, and reduced lifetime reproductive outputs, with worrying consequences for the replenishment of future populations.
Collapse
Affiliation(s)
- Craig R White
- School of Biological Sciences and Centre for Geometric Biology, Monash University, Clayton 3800, Victoria, Australia
| | - Lesley A Alton
- School of Biological Sciences and Centre for Geometric Biology, Monash University, Clayton 3800, Victoria, Australia
| | - Candice L Bywater
- School of Biological Sciences and Centre for Geometric Biology, Monash University, Clayton 3800, Victoria, Australia
| | - Emily J Lombardi
- School of Biological Sciences and Centre for Geometric Biology, Monash University, Clayton 3800, Victoria, Australia
| | - Dustin J Marshall
- School of Biological Sciences and Centre for Geometric Biology, Monash University, Clayton 3800, Victoria, Australia
| |
Collapse
|
50
|
Blasco FR, Taylor EW, Leite CAC, Monteiro DA, Rantin FT, McKenzie DJ. Tolerance of an acute warming challenge declines with body mass in Nile tilapia: evidence of a link to capacity for oxygen uptake. J Exp Biol 2022; 225:276171. [PMID: 35909333 DOI: 10.1242/jeb.244287] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 07/25/2022] [Indexed: 11/20/2022]
Abstract
It has been proposed that larger individuals within fish species may be more sensitive to global warming, due to limitations in their capacity to provide oxygen for aerobic metabolic activities. This could affect size distributions of populations in a warmer world but evidence is lacking. In Nile tilapia Oreochromis niloticus (n=18, mass range 21 - 313g), capacity to provide oxygen for aerobic activities (aerobic scope) was independent of mass at an acclimation temperature of 26 °C. Tolerance of acute warming, however, declined significantly with mass when evaluated as the critical temperature for fatigue from aerobic swimming (CTSmax). The CTSmax protocol challenges a fish to meet the oxygen demands of constant aerobic exercise while their demands for basal metabolism are accelerated by incremental warming, culminating in fatigue. CTSmax elicited pronounced increases in oxygen uptake in the tilapia but the maximum rates achieved prior to fatigue declined very significantly with mass. Mass-related variation in CTSmax and maximum oxygen uptake rates were positively correlated, which may indicate a causal relationship. When fish populations are faced with acute thermal stress, larger individuals may become constrained in their ability to perform aerobic activities at lower temperatures than smaller conspecifics. This could affect survival and fitness of larger fish in a future world with more frequent and extreme heatwaves, with consequences for population productivity.
Collapse
Affiliation(s)
- F R Blasco
- Department of Physiological Sciences, Federal University of São Carlos, 13565-905, São Carlos (SP), Brazil.,Joint Graduate Program in Physiological Sciences, Federal University of São Carlos - UFSCar/São Paulo State University, UNESP Campus Araraquara, 14801-903, Araraquara SP, Brazil
| | - E W Taylor
- Department of Physiological Sciences, Federal University of São Carlos, 13565-905, São Carlos (SP), Brazil.,School of Biosciences, University of Birmingham, B15 2TT, UK
| | - C A C Leite
- Department of Physiological Sciences, Federal University of São Carlos, 13565-905, São Carlos (SP), Brazil
| | - D A Monteiro
- Department of Physiological Sciences, Federal University of São Carlos, 13565-905, São Carlos (SP), Brazil
| | - F T Rantin
- Department of Physiological Sciences, Federal University of São Carlos, 13565-905, São Carlos (SP), Brazil
| | - D J McKenzie
- Department of Physiological Sciences, Federal University of São Carlos, 13565-905, São Carlos (SP), Brazil.,MARBEC, Université Montpellier, CNRS, Ifremer, IRD, 34095 Montpellier, France
| |
Collapse
|