1
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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.
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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
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2
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Jahn M, Seebacher F. Variations in cost of transport and their ecological consequences: a review. J Exp Biol 2022; 225:276242. [PMID: 35942859 DOI: 10.1242/jeb.243646] [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: 11/20/2022]
Abstract
Movement is essential in the ecology of most animals, and it typically consumes a large proportion of individual energy budgets. Environmental conditions modulate the energetic cost of movement (cost of transport, COT), and there are pronounced differences in COT between individuals within species and across species. Differences in morphology affect COT, but the physiological mechanisms underlying variation in COT remain unresolved. Candidates include mitochondrial efficiency and the efficiency of muscle contraction-relaxation dynamics. Animals can offset increased COT behaviourally by adjusting movement rate and habitat selection. Here, we review the theory underlying COT and the impact of environmental changes on COT. Increasing temperatures, in particular, increase COT and its variability between individuals. Thermal acclimation and exercise can affect COT, but this is not consistent across taxa. Anthropogenic pollutants can increase COT, although few chemical pollutants have been investigated. Ecologically, COT may modify the allocation of energy to different fitness-related functions, and thereby influence fitness of individuals, and the dynamics of animal groups and communities. Future research should consider the effects of multiple stressors on COT, including a broader range of pollutants, the underlying mechanisms of COT and experimental quantifications of potential COT-induced allocation trade-offs.
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Affiliation(s)
- Miki Jahn
- School of Life and Environmental Sciences A08, University of Sydney, Sydney, NSW 2006, Australia
| | - Frank Seebacher
- School of Life and Environmental Sciences A08, University of Sydney, Sydney, NSW 2006, Australia
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3
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Stress history affects heat tolerance in an aquatic ectotherm (Chinook salmon, Oncorhynchus tshawytscha). J Therm Biol 2022; 106:103252. [DOI: 10.1016/j.jtherbio.2022.103252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 04/02/2022] [Accepted: 05/05/2022] [Indexed: 11/20/2022]
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4
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Lovvorn JR, Brooks ML. Feeding on epibenthic zooplankton by Long‐tailed Ducks: patch structure, profitability, and food web implications. Ecosphere 2021. [DOI: 10.1002/ecs2.3780] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- James R. Lovvorn
- School of Biological Sciences Southern Illinois University 1125 Lincoln Drive Carbondale Illinois 62901 USA
| | - Marjorie L. Brooks
- School of Biological Sciences Southern Illinois University 1125 Lincoln Drive Carbondale Illinois 62901 USA
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5
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Shuert CR, Marcoux M, Hussey NE, Watt CA, Auger-Méthé M. Assessing the post-release effects of capture, handling and placement of satellite telemetry devices on narwhal (Monodon monoceros) movement behaviour. CONSERVATION PHYSIOLOGY 2021; 9:coaa128. [PMID: 33659061 PMCID: PMC7905160 DOI: 10.1093/conphys/coaa128] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 12/01/2020] [Accepted: 12/04/2020] [Indexed: 06/08/2023]
Abstract
Animal-borne telemetry devices have become a popular and valuable means for studying the cryptic lives of cetaceans. Evaluating the effect of capture, handling and tagging procedures remains largely unassessed across species. Here, we examine the effect of capture, handling and tagging activities on an iconic Arctic cetacean, the narwhal (Monodon monoceros), which has previously been shown to exhibit an extreme response to extended capture and handling. Using accelerometry-derived metrics of behaviour, including activity level, energy expenditure and swimming activity, we quantify the post-release responses and time to recovery of 19 individuals following capture and tagging activities considering the intrinsic covariates of sex and individual size and the extrinsic covariates of handling time and presence of a 'bolt-on' satellite telemetry device. From accelerometer-derived behaviour, most narwhals appeared to return to mean baseline behaviour (recovery) within 24 hours after release, which was supported by longer-term measures of diving data. None of the covariates measured, however, had an effect on the time individuals took to recover following release. Using generalized additive models to describe changes in behaviour over time, we found handling time to be a significant predictor of activity levels, energy expenditure and swimming behaviour following release. Individuals held for the longest period (>40 min) were found to display the largest effect in behaviour immediately following release with respect to swimming behaviour and activity levels. We also found some support for relationships between activity levels, energy expenditure and swimming activity and two other covariates: sex and the attachment of a bolt-on configuration satellite tags. Our results indicate that narwhals recover relatively quickly following capture, handling and tagging procedures, but we suggest that researchers should minimize handling time and further investigation is needed on how to mitigate potential effects of bolt-on satellite tags in these sensitive species.
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Affiliation(s)
- Courtney R Shuert
- Department of Integrative Biology, University of Windsor, Windsor, ON N9B 3P4, Canada
| | - Marianne Marcoux
- Arctic Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, MB R3T 2N6, Canada
| | - Nigel E Hussey
- Department of Integrative Biology, University of Windsor, Windsor, ON N9B 3P4, Canada
| | - Cortney A Watt
- Arctic Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, MB R3T 2N6, Canada
- Department of Biological Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Marie Auger-Méthé
- Department of Statistics, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
- Institute for the Oceans & Fisheries, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
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6
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Li Q, Zhu X, Xiong W, Zhu Y, Zhang J, Djiba PK, Lv X, Luo Y. Effects of temperature on metabolic scaling in black carp. PeerJ 2020; 8:e9242. [PMID: 32518735 PMCID: PMC7261118 DOI: 10.7717/peerj.9242] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 05/05/2020] [Indexed: 01/23/2023] Open
Abstract
The surface area (SA) of organs and cells may vary with temperature, which changes the SA exchange limitation on metabolic flows as well as the influence of temperature on metabolic scaling. The effect of SA change can intensify (when the effect is the same as that of temperature) or compensate for (when the effect is the opposite of that of temperature) the negative effects of temperature on metabolic scaling, which can result in multiple patterns of metabolic scaling with temperature among species. The present study aimed to examine whether metabolic scaling in black carp changes with temperature and to identify the link between metabolic scaling and SA at the organ and cellular levels at different temperatures. The resting metabolic rate (RMR), gill surface area (GSA) and red blood cell (RBC) size of black carp with different body masses were measured at 10 °C and 25 °C, and the scaling exponents of these parameters were compared. The results showed that both body mass and temperature independently affected the RMR, GSA and RBC size of black carp. A consistent scaling exponent of RMR (0.764, 95% CI [0.718-0.809]) was obtained for both temperatures. The RMR at 25 °C was 2.7 times higher than that at 10 °C. At both temperatures, the GSA scaled consistently with body mass by an exponent of 0.802 (95% CI [0.759-0.846]), while RBC size scaled consistently with body mass by an exponent of 0.042 (95% CI [0.010-0.075]). The constant GSA scaling can explain the constant metabolic scaling as temperature increases, as metabolism may be constrained by fluxes across surfaces. The GSA at 10 °C was 1.2 times higher than that at 25 °C, which suggests that the constraints of GSA on the metabolism of black carp is induced by the higher temperature. The RBC size at 10 °C was 1.1 times higher than that at 25 °C. The smaller RBC size (a larger surface-to-volume ratio) at higher temperature suggests an enhanced oxygen supply and a reduced surface boundary limit on b R, which offset the negative effect of temperature on b R.
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Affiliation(s)
- Qian Li
- Key Laboratory of Freshwater Fish Reproduction and Development, Ministry of Education, School of Life Sciences, Southwest University, Chongqing, China
| | - Xiaoling Zhu
- Key Laboratory of Freshwater Fish Reproduction and Development, Ministry of Education, School of Life Sciences, Southwest University, Chongqing, China
| | - Wei Xiong
- Key Laboratory of Freshwater Fish Reproduction and Development, Ministry of Education, School of Life Sciences, Southwest University, Chongqing, China
| | - Yanqiu Zhu
- Key Laboratory of Freshwater Fish Reproduction and Development, Ministry of Education, School of Life Sciences, Southwest University, Chongqing, China
| | - Jianghui Zhang
- Key Laboratory of Freshwater Fish Reproduction and Development, Ministry of Education, School of Life Sciences, Southwest University, Chongqing, China
| | - Pathe Karim Djiba
- Key Laboratory of Freshwater Fish Reproduction and Development, Ministry of Education, School of Life Sciences, Southwest University, Chongqing, China
| | - Xiao Lv
- Key Laboratory of Freshwater Fish Reproduction and Development, Ministry of Education, School of Life Sciences, Southwest University, Chongqing, China
| | - Yiping Luo
- Key Laboratory of Freshwater Fish Reproduction and Development, Ministry of Education, School of Life Sciences, Southwest University, Chongqing, China
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7
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Activity alters how temperature influences intraspecific metabolic scaling: testing the metabolic-level boundaries hypothesis. J Comp Physiol B 2020; 190:445-454. [DOI: 10.1007/s00360-020-01279-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 04/07/2020] [Accepted: 04/27/2020] [Indexed: 10/24/2022]
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8
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Rubio-Gracia F, García-Berthou E, Guasch H, Zamora L, Vila-Gispert A. Size-related effects and the influence of metabolic traits and morphology on swimming performance in fish. Curr Zool 2020; 66:493-503. [PMID: 33376477 PMCID: PMC7750985 DOI: 10.1093/cz/zoaa013] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 03/14/2020] [Indexed: 01/26/2023] Open
Abstract
Energy metabolism fuels swimming and other biological processes. We compared the swimming performance and energy metabolism within and across eight freshwater fish species. Using swim tunnel respirometers, we measured the standard metabolic rate (SMR) and maximum metabolic rate (MMR) and calculated the critical swimming speed (Ucrit). We accounted for body size, metabolic traits, and some morphometric ratios in an effort to understand the extent and underlying causes of variation. Body mass was largely the best predictor of swimming capacity and metabolic traits within species. Moreover, we found that predictive models using total length or SMR, in addition to body mass, significantly increased the explained variation of Ucrit and MMR in certain fish species. These predictive models also underlined that, once body mass has been accounted for, Ucrit can be independently affected by total length or MMR. This study exemplifies the utility of multiple regression models to assess within-species variability. At interspecific level, our results showed that variation in Ucrit can partly be explained by the variation in the interrelated traits of MMR, fineness, and muscle ratios. Among the species studied, bleak Alburnus alburnus performed best in terms of swimming performance and efficiency. By contrast, pumpkinseed Lepomis gibbosus showed very poor swimming performance, but attained lower mass-specific cost of transport (MCOT) than some rheophilic species, possibly reflecting a cost reduction strategy to compensate for hydrodynamic disadvantages. In conclusion, this study provides insight into the key factors influencing the swimming performance of fish at both intra- and interspecific levels.
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Affiliation(s)
| | | | - Helena Guasch
- Institute of Aquatic Ecology, University of Girona, 17003 Girona, Spain.,Integrative Freshwater Ecology Group, Centre d'Estudis Avançats de Blanes, CSIC, 17300 Blanes, Spain
| | - Lluís Zamora
- Institute of Aquatic Ecology, University of Girona, 17003 Girona, Spain
| | - Anna Vila-Gispert
- Institute of Aquatic Ecology, University of Girona, 17003 Girona, Spain
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9
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Meskendahl L, Fontes RP, Herrmann JP, Temming A. Metabolic costs of spontaneous swimming in Sprattus sprattus L., at different water temperatures. PLoS One 2019; 14:e0225568. [PMID: 31756238 PMCID: PMC6874314 DOI: 10.1371/journal.pone.0225568] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 11/07/2019] [Indexed: 11/25/2022] Open
Abstract
Oxygen uptake (MO2; mgO2 fish-1h-1) of fish groups was measured at temperatures between 10–19°C in an intermittent-flow respirometer to quantify the metabolic costs of spontaneous swimming patterns in the small clupeid Sprattus sprattus. Movements of individual fish within the school were tracked automatically during respirometry. Oxygen uptake was then related to mean swimming speeds and the number of sharp turns (>90°), which are common behavioural elements of spontaneous swimming in clupeid fish. Different possible model formulations for describing the relationship between respiration and swimming patterns were compared via the AIC. The final model revealed that costs for sharp turns at a frequency of 1 s-1 doubled the metabolic costs compared to those with zero turns but with likewise a moderate swimming speed of 0.28 body length -1. The cost for swimming doubled if the swimming speed was doubled from 0.28 to 0.56 BLs-1 but increased by a factor of 4.5 if tripled to 0.84 BLs-1. Costs for transport were minimal at a speed of 0.4 body lengths s-1 at all temperatures. New basic input parameters to estimate energy losses during spontaneous movements, which occur typically during foraging in this small pelagic fish, are provided.
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Affiliation(s)
- Laura Meskendahl
- Institute for Marine Ecosystem- and Fisheries Science, University of Hamburg, Olbersweg, Hamburg, Germany
| | | | - Jens-Peter Herrmann
- Institute for Marine Ecosystem- and Fisheries Science, University of Hamburg, Olbersweg, Hamburg, Germany
| | - Axel Temming
- Institute for Marine Ecosystem- and Fisheries Science, University of Hamburg, Olbersweg, Hamburg, Germany
- * E-mail:
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10
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Xi Y, Meng X, Ying-Ping H, Yi-Hong Z, Johnson DM, Zhi-Ying T. Color-induced changes in oxygen consumption and swimming performance of juvenile bighead carp (Aristichthys nobilis). FISH PHYSIOLOGY AND BIOCHEMISTRY 2019; 45:1771-1777. [PMID: 31209689 DOI: 10.1007/s10695-019-00671-0] [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: 08/27/2017] [Accepted: 06/05/2019] [Indexed: 06/09/2023]
Abstract
Fish physiology and behavior are affected by exposure to light of varying colors, but little is known about the effects on swimming performance and metabolism. The purpose of this study was to measure the effects of light color on the swimming performance of bighead carp (Aristichthys nobilis), a planktivorous fish species widely used in aquaculture. Stepped velocity testing was conducted in a modified Brett-type swim tunnel respirometer to determine critical swimming speed (Ucrit), oxygen consumption (MO2), and excess post-exercise oxygen consumption (EPOC) for juvenile bighead carp under red, yellow, blue, and green lights at 25 °C. Ucrit was significantly lower for fish swimming under yellow and green lights compared with red and blue light. Cost of transport (COT), a measure of swimming efficiency, also varied with color. The results, obtained under controlled conditions, add to our knowledge on the effects of artificial color light on fish physiology and behavior and inform decisions on the use of artificial color light in aquaculture and fishway design.
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Affiliation(s)
- Yuan Xi
- Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang, 443002, Hubei, China
- College of Hydraulic & Environmental Engineering, China Three Gorges University, Hubei, 443002, Yichang, China
| | - Xu Meng
- College of Hydraulic & Environmental Engineering, China Three Gorges University, Hubei, 443002, Yichang, China
| | - Huang Ying-Ping
- Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang, 443002, Hubei, China.
- College of Hydraulic & Environmental Engineering, China Three Gorges University, Hubei, 443002, Yichang, China.
| | - Zhou Yi-Hong
- College of Hydraulic & Environmental Engineering, China Three Gorges University, Hubei, 443002, Yichang, China
| | - David M Johnson
- Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang, 443002, Hubei, China
- School of Natural Sciences and Mathematics, Ferrum College, Ferrum, VA, 24088, USA
| | - Tu Zhi-Ying
- Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang, 443002, Hubei, China
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11
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Li J, Hao Y, Tian D, He S, Sun X, Yang H. Relationship between cumulative exposure to pesticides and sleep disorders among greenhouse vegetable farmers. BMC Public Health 2019; 19:373. [PMID: 30943937 PMCID: PMC6448255 DOI: 10.1186/s12889-019-6712-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 03/27/2019] [Indexed: 11/23/2022] Open
Abstract
Background In the northern region of China, many greenhouse vegetable farmers are exposed to high cumulative levels of pesticides due to long-term work in greenhouses that impacts their health. The aim of the current study was to identify the relationship between cumulative pesticide exposure and sleep disorders among farmers in Yinchuan, Northwest China. Methods A cross-sectional study was conducted for 3 consecutive years in 2015, 2016 and 2017. Using a random sampling to select the resident teams, 1366 participants were enrolled, and information was collected via face-to-face interviews by trained investigators. Ordinal logistic, multinomial logistic and poisson logistic regression models were used to identify the associations between cumulative exposure intensity (CEI) and sleep disorders. Results High CEI (OR = 1.56, 95% CI: 1.02–3.38) was associated with short sleep duration when compared with low CEI in the Full Model. CEI was not associated with long sleep duration. Self-rated sleep quality was associated with medium (OR = 1.46, 95% CI: 1.10–2.00) and high (OR = 2.50, 95% CI: 1.83–3.40) CEI. Similarly, having difficulty sleeping was associated with medium (OR = 1.52, 95% CI: 1.02–2.24) and high (OR = 1.74, 95% CI: 1.16–2.62) CEI. Differences in the associations by gender were also noted. Conclusion CEI was associated with sleep disorders, and gender differences were observed. Efforts should be made by local governments to address sleep problems that result from cumulative pesticide exposure in farmers, and gender differences should be considered. Electronic supplementary material The online version of this article (10.1186/s12889-019-6712-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jiangping Li
- Department of Epidemiology and Health Statistics, School of Public Health and Management, Ningxia Medical University, Yinchuan, 750004, China
| | - Yanxing Hao
- Department of Occupational and Environmental Health, School of Public Health and Management, Ningxia Medical University, 1160 Shengli Street, Xingqing District, Yinchuan, 750004, China
| | - Danian Tian
- Department of Hygienic Chemistry, School of Public Health and Management, Ningxia Medical University, Yinchuan, 750004, China
| | - Shulan He
- Department of Epidemiology and Health Statistics, School of Public Health and Management, Ningxia Medical University, Yinchuan, 750004, China
| | - Xian Sun
- Department of Epidemiology and Health Statistics, School of Public Health and Management, Ningxia Medical University, Yinchuan, 750004, China
| | - Huifang Yang
- Department of Occupational and Environmental Health, School of Public Health and Management, Ningxia Medical University, 1160 Shengli Street, Xingqing District, Yinchuan, 750004, China.
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12
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Morozov S, McCairns RJS, Merilä J. FishResp: R package and GUI application for analysis of aquatic respirometry data. CONSERVATION PHYSIOLOGY 2019; 7:coz003. [PMID: 30746152 PMCID: PMC6364290 DOI: 10.1093/conphys/coz003] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 12/19/2018] [Accepted: 01/07/2019] [Indexed: 06/09/2023]
Abstract
Intermittent-flow respirometry is widely used to measure oxygen uptake rates and subsequently estimate aerobic metabolic rates of aquatic animals. However, the lack of a standard quality-control software to detect technical problems represents a potential impediment to comparisons across studies in the field of evolutionary and conservation physiology. Here, we introduce 'FishResp', a versatile R package and its graphical implementation for quality-control and filtering of raw respirometry data. Our goal is to provide a straightforward, cross-platform and free software to help improve the quality and comparability of metabolic rate estimates for reducing methodological fragmentation in the field of aquatic respirometry. FishResp accepts data from various respirometry systems, allows users to detect potential mechanical problems which can occur during oxygen uptake measurements (e.g. chamber leaking, poor water circulation), and offers six options to correct raw data for microbial oxygen consumption. The software performs filtering of raw data based on user criteria, and produces accurate and unbiased estimates of absolute and mass-specific metabolic rates. Using data from three-spined sticklebacks (Gasterosteus aculeatus) and Trinidadian guppies (Poecilia reticulata), we demonstrate the virtues of FishResp, highlighting the importance of detecting mechanical problems and correcting measurements for background respiration.
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Affiliation(s)
- Sergey Morozov
- Ecological Genetics Research Unit, Organismal and Evolutionary Biology Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - R J Scott McCairns
- ESE, Ecology and Ecosystem Health, INRA, Agrocampus Ouest, Rennes, France
| | - Juha Merilä
- Ecological Genetics Research Unit, Organismal and Evolutionary Biology Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
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13
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The influence of ontogenetic diet variation on consumption rate estimates: a marine example. Sci Rep 2018; 8:10725. [PMID: 30013084 PMCID: PMC6048066 DOI: 10.1038/s41598-018-28479-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 06/14/2018] [Indexed: 12/03/2022] Open
Abstract
Consumption rates are the foundation of trophic ecology, yet bioenergetics models used to estimate these rates can lack realism by not incorporating the ontogeny of diet. We constructed a bioenergetics model of a marine predatory fish (tailor, Pomatomus saltatrix) that incorporated high-resolution ontogenetic diet variation, and compared consumption estimates to those derived from typical bioenergetics models that do not consider ontogenetic diet variation. We found tailor consumption was over- or under-estimated by ~5–25% when only including the most common prey item. This error was due to a positive relationship between mean prey energy density and predator body size. Since high-resolution diet data isn’t always available, we also simulated how increasing dietary information progressively influenced consumption rate estimates. The greatest improvement in consumption rate estimates occurred when diet variation of 2–3 stanzas (1–2 juvenile stanzas, and adults) was included, with at least 5–6 most common prey types per stanza. We recommend increased emphasis on incorporating the ontogeny of diet and prey energy density in consumption rate estimates, especially for species with spatially segregated life stages or variable diets. A small-moderate increase in the resolution of dietary information can greatly benefit the accuracy of estimated consumption rates. We present a method of incorporating variable prey energy density into bioenergetics models.
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14
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Ferrón HG. Regional endothermy as a trigger for gigantism in some extinct macropredatory sharks. PLoS One 2017; 12:e0185185. [PMID: 28938002 PMCID: PMC5609766 DOI: 10.1371/journal.pone.0185185] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 09/07/2017] [Indexed: 11/18/2022] Open
Abstract
Otodontids include some of the largest macropredatory sharks that ever lived, the most extreme case being Otodus (Megaselachus) megalodon. The reasons underlying their gigantism, distribution patterns and extinction have been classically linked with climatic factors and the evolution, radiation and migrations of cetaceans during the Paleogene. However, most of these previous proposals are based on the idea of otodontids as ectothermic sharks regardless of the ecological, energetic and body size constraints that this implies. Interestingly, a few recent studies have suggested the possible existence of endothermy in these sharks thus opening the door to a series of new interpretations. Accordingly, this work proposes that regional endothermy was present in otodontids and some closely related taxa (cretoxyrhinids), playing an important role in the evolution of gigantism and in allowing an active mode of live. The existence of regional endothermy in these groups is supported here by three different approaches including isotopic-based approximations, swimming speed inferences and the application of a novel methodology for assessing energetic budget and cost of swimming in extinct taxa. In addition, this finding has wider implications. It calls into question some previous paleotemperature estimates based partially on these taxa, suggests that the existing hypothesis about the evolution of regional endothermy in fishes requires modification, and provides key evidence for understanding the evolution of gigantism in active macropredators.
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Affiliation(s)
- Humberto G. Ferrón
- Institut Cavanilles de Biodiversitat I Biologia Evolutiva, University of Valencia, Burjassot, Spain
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15
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Liu Y, Ma D, Zhao C, Xiao Z, Xu S, Xiao Y, Wang Y, Liu Q, Li J. The expression pattern of hsp70 plays a critical role in thermal tolerance of marine demersal fish: Multilevel responses of Paralichthys olivaceus and its hybrids (P. olivaceus ♀ × P. dentatus ♂) to chronic and acute heat stress. MARINE ENVIRONMENTAL RESEARCH 2017; 129:386-395. [PMID: 28689860 DOI: 10.1016/j.marenvres.2017.06.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 05/10/2017] [Accepted: 06/22/2017] [Indexed: 06/07/2023]
Abstract
Ocean warming has multifaceted impacts on marine organisms. This study investigated the different responses of Paralichthys olivaceus and the hybrids (P. olivaceus ♀ × P. dentatus ♂) to chronic and acute heat stress. By comparing their survival, behavioural and histological changes, we found that the hybrids possess a better thermal tolerance with a higher cumulative survival rate (CSR), relatively fewer behavioural changes and less gill damage. Moreover, we analysed the relationship between thermal tolerance and the hsp70 expression pattern and found that thermal tolerant species (the hybrids) exhibited higher threshold induction temperature, shorter durations, stronger magnitudes and a delay in hsp70 expression. We speculated that the expression mode of hsp70, rather than itself, plays a critical role in thermal tolerance. These findings would improve the understanding of hsp70 in future marine climate research and help clarify the profound effects of rising temperature on marine demersal fishes.
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Affiliation(s)
- Yifan Liu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Daoyuan Ma
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Chunyan Zhao
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhizhong Xiao
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Shihong Xu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Yongshuang Xiao
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Yanfeng Wang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Qinghua Liu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
| | - Jun Li
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
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16
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Khan JR, Trembath C, Pether S, Bruce M, Walker SP, Herbert NA. Accommodating the cost of growth and swimming in fish-the applicability of exercise-induced growth to juvenile hapuku (Polyprion oxygeneios). Front Physiol 2014; 5:448. [PMID: 25520662 PMCID: PMC4249255 DOI: 10.3389/fphys.2014.00448] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 11/02/2014] [Indexed: 11/13/2022] Open
Abstract
Induced-swimming can improve the growth and feed conversion efficiency of finfish aquaculture species, such as salmonids and Seriola sp., but some species, such as Atlantic cod, show no or a negative productivity response to exercise. As a possible explanation for these species-specific differences, a recent hypothesis proposed that the applicability of exercise training, as well as the exercise regime for optimal growth gain (ERopt growth), was dependent upon the size of available aerobic metabolic scope (AMS). This study aimed to test this hypothesis by measuring the growth and swimming metabolism of hapuku, Polyprion oxygeneios, to different exercise regimes and then reconciling the metabolic costs of swimming and specific dynamic action (SDA) against AMS. Two 8-week growth trials were conducted with ERs of 0.0, 0.25, 0.5, 0.75, 1, and 1.5 body lengths per second (BL s(-1)). Fish in the first trial showed a modest 4.8% increase in SGR over static controls in the region 0.5-0.75 BL s(-1) whereas the fish in trial 2 showed no significant effect of ER on growth performance. Reconciling the SDA of hapuku with the metabolic costs of swimming showed that hapuku AMS is sufficient to support growth and swimming at all ERs. The current study therefore suggests that exercise-induced growth is independent of AMS and is driven by other factors.
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Affiliation(s)
- Javed R Khan
- Leigh Marine Laboratory, Institute of Marine Science, The University of Auckland Auckland, New Zealand
| | | | - Steve Pether
- National Institute of Water and Atmospheric Research, Bream Bay Aquaculture Park Ruakaka, New Zealand
| | - Michael Bruce
- National Institute of Water and Atmospheric Research, Bream Bay Aquaculture Park Ruakaka, New Zealand
| | - Seumas P Walker
- National Institute of Water and Atmospheric Research, Bream Bay Aquaculture Park Ruakaka, New Zealand
| | - Neill A Herbert
- Leigh Marine Laboratory, Institute of Marine Science, The University of Auckland Auckland, New Zealand
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17
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Yu KH, Suk MH, Kang SW, Shin YA. Effects of combined linear and nonlinear periodic training on physical fitness and competition times in finswimmers. J Exerc Rehabil 2014; 10:306-12. [PMID: 25426469 PMCID: PMC4237847 DOI: 10.12965/jer.140151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 10/18/2014] [Indexed: 11/22/2022] Open
Abstract
The purpose of this study was to investigate the effect of combined linear and nonlinear periodic training on physical fitness and competition times in finswimmers. The linear resistance training model (6 days/week) and nonlinear underwater training (4 days/week) were applied to 12 finswimmers (age, 16.08± 1.44 yr; career, 3.78± 1.90 yr) for 12 weeks. Body composition measures included weight, body mass index (BMI), percent fat, and fat-free mass. Physical fitness measures included trunk flexion forward, trunk extension backward, sargent jump, 1-repetition-maximum (1 RM) squat, 1 RM dead lift, knee extension, knee flexion, trunk extension, trunk flexion, and competition times. Body composition and physical fitness were improved after the 12-week periodic training program. Weight, BMI, and percent fat were significantly decreased, and trunk flexion forward, trunk extension backward, sargent jump, 1 RM squat, 1 RM dead lift, and knee extension (right) were significantly increased. The 50- and 100-m times significantly decreased in all 12 athletes. After 12 weeks of training, all finswimmers who participated in this study improved their times in a public competition. These data indicate that combined linear and nonlinear periodic training enhanced the physical fitness and competition times in finswimmers.
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Affiliation(s)
- Kyung-Hun Yu
- Department of Kinesiology and Medical Science, Dankook University, Cheonan, Korea
| | - Min-Hwa Suk
- Department of Kinesiology and Medical Science, Dankook University, Cheonan, Korea
| | - Shin-Woo Kang
- Department of Kinesiology and Medical Science, Dankook University, Cheonan, Korea
| | - Yun-A Shin
- Department of Kinesiology and Medical Science, Dankook University, Cheonan, Korea
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18
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19
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20
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Cai L, Liu G, Taupier R, Fang M, Johnson D, Tu Z, Huang Y. Effect of temperature on swimming performance of juvenile Schizothorax prenanti. FISH PHYSIOLOGY AND BIOCHEMISTRY 2014; 40:491-498. [PMID: 24061934 DOI: 10.1007/s10695-013-9860-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 09/03/2013] [Indexed: 06/02/2023]
Abstract
The migration of Schizothorax prenanti, an ecologically important and commercially valuable species, is impeded by dams. Effective fishways would contribute to conservation of wild populations, and swimming performance data are necessary for fishway design. The swimming performance of S. prenanti was investigated at four temperatures (15, 19, 23, 27 °C), and numerical models were used to characterize the effect of temperature on swimming performance. As temperature increases, critical swimming speed (U crit) increases from 15 to 23 °C and then decreases significantly. The highest U crit (7.71 BL/s) occurs at 24 °C, as estimated by interpolation. Swimming efficiency was similar from 19 to 23 °C, but decreases significantly at 27 °C. The temperature range 15-23 °C is suitable for S. prenanti. However, the excess post-exercise oxygen consumption values of Q 10 for the four temperature increments indicate that 19-23 °C is the optimal range for swimming performance. Maximum tail beat amplitude increased >25 % (0.35-0.45 BL) over the temperature range considered, but variation of tail beat frequency was erratic. White muscle fiber begins to contribute to swimming at swimming speeds ~40 % U crit at the lower three temperatures, but increases to almost 60 % at 27 °C, and the contribution is relatively small. The results of this investigation advance the knowledge of fish metabolism while swimming provides data critical for fishway design.
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Affiliation(s)
- Lu Cai
- Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang, 443002, People's Republic of China,
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21
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Giacomini HC, Shuter BJ, Lester NP. Predator bioenergetics and the prey size spectrum: Do foraging costs determine fish production? J Theor Biol 2013; 332:249-60. [DOI: 10.1016/j.jtbi.2013.05.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Revised: 04/14/2013] [Accepted: 05/07/2013] [Indexed: 10/26/2022]
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22
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Jensen MA, Fitzgibbon QP, Carter CG, Adams LR. Effect of body mass and activity on the metabolic rate and ammonia-N excretion of the spiny lobster Sagmariasus verreauxi during ontogeny. Comp Biochem Physiol A Mol Integr Physiol 2013; 166:191-8. [DOI: 10.1016/j.cbpa.2013.06.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 06/04/2013] [Accepted: 06/04/2013] [Indexed: 12/21/2022]
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23
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Ohlberger J, Brännström Å, Dieckmann U. Adaptive phenotypic diversification along a temperature-depth gradient. Am Nat 2013; 182:359-73. [PMID: 23933726 DOI: 10.1086/671169] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Theoretical models suggest that sympatric speciation along environmental gradients might be common in nature. Here we present the first data-based model of evolutionary diversification along a continuous environmental gradient. On the basis of genetic analyses, it has been suggested that a pair of coregonid fishes (Coregonus spp.) in a postglacial German lake originated by sympatric speciation. Within this lake, the two species segregate vertically and show metabolic adaptations to, as well as behavioral preferences for, correspondingly different temperatures. We test the plausibility of the hypothesis that this diversifying process has been driven by adaptations to different thermal microhabitats along the lake's temperature-depth gradient. Using an adaptive-dynamics model that is calibrated with empirical data and allows the gradual evolution of a quantitative trait describing optimal foraging temperature, we show that under the specific environmental conditions in the lake, evolutionary branching of a hypothetical ancestral population into two distinct phenotypes may have occurred. We also show that the resultant evolutionary diversification yields two stably coexisting populations with trait values and depth distributions that are in agreement with those currently observed in the lake. We conclude that divergent thermal adaptations along the temperature-depth gradient might have brought about the two species observed today.
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Affiliation(s)
- Jan Ohlberger
- Department of Biology and Ecology of Fishes, Leibniz Institute of Freshwater Ecology and Inland Fisheries, D-12587 Berlin, Germany.
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24
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Cai L, Taupier R, Johnson D, Tu Z, Liu G, Huang Y. Swimming Capability and Swimming Behavior of JuvenileAcipenser schrenckii. ACTA ACUST UNITED AC 2013; 319:149-55. [PMID: 23359615 DOI: 10.1002/jez.1780] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Revised: 11/30/2012] [Accepted: 12/19/2012] [Indexed: 11/11/2022]
Affiliation(s)
- Lu Cai
- Engineering Research Center of Eco-environment in Three Gorges Reservoir Region; Ministry of Education, China Three Gorges University; Yichang; PR China
| | - Rachel Taupier
- School of Natural Sciences and Mathematics; Ferrum College; Ferrum, Virginia
| | - David Johnson
- School of Natural Sciences and Mathematics; Ferrum College; Ferrum, Virginia
| | - Zhiying Tu
- Engineering Research Center of Eco-environment in Three Gorges Reservoir Region; Ministry of Education, China Three Gorges University; Yichang; PR China
| | - Guoyong Liu
- Engineering Research Center of Eco-environment in Three Gorges Reservoir Region; Ministry of Education, China Three Gorges University; Yichang; PR China
| | - Yingping Huang
- Engineering Research Center of Eco-environment in Three Gorges Reservoir Region; Ministry of Education, China Three Gorges University; Yichang; PR China
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25
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Determinants of inter-specific variation in basal metabolic rate. J Comp Physiol B 2012; 183:1-26. [DOI: 10.1007/s00360-012-0676-5] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Revised: 05/02/2012] [Accepted: 05/09/2012] [Indexed: 10/27/2022]
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26
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Ontogeny of hypoxic modulation of cardiac performance and its allometry in the African clawed frog Xenopus laevis. J Comp Physiol B 2012; 183:123-33. [PMID: 22752075 DOI: 10.1007/s00360-012-0686-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Revised: 05/25/2012] [Accepted: 06/14/2012] [Indexed: 10/28/2022]
Abstract
The ontogeny of cardiac hypoxic responses, and how such responses may be modified by rearing environment, are poorly understood in amphibians. In this study, cardiac performance was investigated in Xenopus laevis from 2 to 25 days post-fertilization (dpf). Larvae were reared under either normoxia or moderate hypoxia (PO₂ = 110 mmHg), and each population was assessed in both normoxia and acute hypoxia. Heart rate (f(H)) of normoxic-reared larvae exhibited an early increase from 77 ± 1 beats min⁻¹ at 2 dpf to 153 ± 1 beats min⁻¹ at 4 dpf, followed by gradual decreases to 123 ± 3 beats min⁻¹ at 25 dpf. Stroke volume (SV), 6 ± 1 nl, and cardiac output (CO), 0.8 ± 0.1 μl min⁻¹, at 5 dpf both increased by more than 40-fold to 25 dpf with rapid larval growth (~30-fold increase in body mass). When exposed to acute hypoxia, normoxic-reared larvae increased f(H) and CO between 5 and 25 dpf. Increased SV in acute hypoxia, produced by increased end-diastolic volume (EDV), only occurred before 10 dpf. Hypoxic-reared larvae showed decreased acute hypoxic responses of EDV, SV and CO at 7 and 10 dpf. Over the period of 2-25 dpf, cardiac scaling with mass showed scaling coefficients of -0.04 (f(H)), 1.23 (SV) and 1.19 (CO), contrary to the cardiac scaling relationships described in birds and mammals. In addition, f(H) scaling in hypoxic-reared larvae was altered to a shallower slope of -0.01. Collectively, these results indicate that acute cardiac hypoxic responses develop before 5 dpf. Chronic hypoxia at a moderate level can not only modulate this cardiac reflex, but also changes cardiac scaling relationship with mass.
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27
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Hein AM, Keirsted KJ. The rising cost of warming waters: effects of temperature on the cost of swimming in fishes. Biol Lett 2012; 8:266-9. [PMID: 22031723 PMCID: PMC3297402 DOI: 10.1098/rsbl.2011.0885] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Accepted: 10/03/2011] [Indexed: 11/12/2022] Open
Abstract
Understanding the effects of water temperature on the swimming performance of fishes is central in understanding how fish species will respond to global climate change. Metabolic cost of transport (COT)-a measure of the energy required to swim a given distance-is a key performance parameter linked to many aspects of fish life history. We develop a quantitative model to predict the effect of water temperature on COT. The model facilitates comparisons among species that differ in body size by incorporating the body mass-dependence of COT. Data from 22 fish species support the temperature and mass dependencies of COT predicted by our model, and demonstrate that modest differences in water temperature can result in substantial differences in the energetic cost of swimming.
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Affiliation(s)
- Andrew M Hein
- Department of Biology, University of Florida, Gainesville, FL 32611, USA.
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28
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TU ZHIYING, LI LIPING, YUAN XI, HUANG YINGPING, JOHNSON DAVID. Aerobic Swimming Performance of Juvenile Largemouth Bronze Gudgeon (Coreius guichenoti) in the Yangtze River. ACTA ACUST UNITED AC 2012; 317:294-302. [PMID: 22511339 DOI: 10.1002/jez.1723] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2011] [Revised: 12/23/2011] [Accepted: 01/31/2012] [Indexed: 11/10/2022]
Affiliation(s)
- ZHIYING TU
- Engineering Research Center of Eco-environment in Three Gorges Reservoir Region; Ministry of Education, China Three Gorges University; Hubei Yichang; China
| | - LIPING LI
- Engineering Research Center of Eco-environment in Three Gorges Reservoir Region; Ministry of Education, China Three Gorges University; Hubei Yichang; China
| | - XI YUAN
- Engineering Research Center of Eco-environment in Three Gorges Reservoir Region; Ministry of Education, China Three Gorges University; Hubei Yichang; China
| | - YINGPING HUANG
- Engineering Research Center of Eco-environment in Three Gorges Reservoir Region; Ministry of Education, China Three Gorges University; Hubei Yichang; China
| | - DAVID JOHNSON
- School of Natural Sciences and Mathematics; Ferrum College; Ferrum; Virginia
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29
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Luo YP, Wang QQ. Effects of body mass and temperature on routine metabolic rate of juvenile largemouth bronze gudgeon Coreius guichenoti. JOURNAL OF FISH BIOLOGY 2012; 80:842-851. [PMID: 22471803 DOI: 10.1111/j.1095-8649.2012.03229.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The effects of body mass (M) and temperature (T) on routine metabolic rate (m(R) ) were assessed in the largemouth bronze gudgeon Coreius guichenoti, from Three Gorges Reservoir, Yangtze River, China. The m(R) increased with increasing M by factors (b-value in the equation m(R) = aM(b) ) of 0·843, 0·800, 0·767, 0·788 and 0·822 at 10, 15, 20, 25 and 30° C, respectively. A significant interaction between M and T on m(R) was observed. The variation in the b-value at different T suggests that the b-values were not consistent with the universal allometric exponent 0·75. After controlling for M, the relationship between the normalized standard metabolic rate (m(S), mg O(2) kg(-1) h(-1)) and T was described by an exponential equation: m(S) = 9·89e((0·093T)) . The results indicate that the effects of M on m(R) depend on T. The increased water temperature induced by dam construction on the Yangtze River may cause a marked increase in energy demand by this species, with potential ecological consequences.
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Affiliation(s)
- Y P Luo
- Key Laboratory of Freshwater Fish Reproduction and Development, Southwest University, Ministry of Education, Chongqing 400715, China.
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30
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Glazier DS, Butler EM, Lombardi SA, Deptola TJ, Reese AJ, Satterthwaite EV. Ecological effects on metabolic scaling: amphipod responses to fish predators in freshwater springs. ECOL MONOGR 2011. [DOI: 10.1890/11-0264.1] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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31
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Ohlberger J, Mehner T, Staaks G, Hölker F. Intraspecific temperature dependence of the scaling of metabolic rate with body mass in fishes and its ecological implications. OIKOS 2011. [DOI: 10.1111/j.1600-0706.2011.19882.x] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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32
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33
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Helland IP, Vøllestad LA, Freyhof J, Mehner T. Morphological differences between two ecologically similar sympatric fishes. JOURNAL OF FISH BIOLOGY 2009; 75:2756-2767. [PMID: 20738521 DOI: 10.1111/j.1095-8649.2009.02476.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Morphological differentiation and microhabitat segregation of two ecologically similar populations of pelagic planktivorous fishes, Coregonus albula and the smaller Coregonus fontanae, were studied in Lake Stechlin (northern Germany). Both populations performed diel vertical migrations, although C. fontanae was always situated in deeper pelagic water than C. albula both during day and night. Landmark-based geometric morphometrics revealed that sympatric C. albula and C. fontanae differ in external morphology, with main differences found in head length and eye position, as well as in length and width of the caudal peduncle. Moreover, while C. albula has a similar morphology over all sizes, the shape of C. fontanae changes with size. Accordingly, the morphology of the two is most different at smaller size. Although the morphological differences may reflect adaptations to the slightly differing microhabitats of the two populations, there is no conclusive evidence that this correspondence between ecology and morphology is the main mechanism behind the coexistence of the closely related coregonids in Lake Stechlin.
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Affiliation(s)
- I P Helland
- Department of Biology and Ecology of Fishes, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, P.O. Box 850 119, D-12561 Berlin, Germany.
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34
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Vaca HF, White CR. Environmental modulation of metabolic allometry in ornate rainbowfish Rhadinocentrus ornatus. Biol Lett 2009; 6:136-8. [PMID: 19776063 DOI: 10.1098/rsbl.2009.0610] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The nature of the relationship between the metabolic rate (MR) and body mass (M) of animals has been the source of controversy for over seven decades, with much of the focus on the value of the scaling exponent b, where MR is proportional to M(b). While it is well known that MR does not generally scale isometrically (i.e. b is seldom equal to 1), the value of b remains the subject of heated debate. In the present study, we examine the influence of an ecologically relevant abiotic variable, pH, on the metabolic allometry of an Australian freshwater fish, Rhadinocentrus ornatus. We show that the value of b is lower for rainbowfish acclimated to acidic (pH 5.0) conditions compared to rainbowfish acclimated to alkaline conditions (pH 8.5), but that acute exposure to altered pH does not alter the value of b. This significant effect of an abiotic variable on metabolic allometry supports a growing body of evidence that there is no universal value of b and demonstrates that experimental manipulations of metabolic allometry represent powerful, and as yet underused, tools to understand the factors that constrain and influence the allometry of metabolic rate.
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Affiliation(s)
- H Fabian Vaca
- School of Biological Sciences, The University of Queensland, , St Lucia, Queensland 4072, Australia
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35
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Glazier DS. Activity affects intraspecific body-size scaling of metabolic rate in ectothermic animals. J Comp Physiol B 2009; 179:821-8. [DOI: 10.1007/s00360-009-0363-3] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2009] [Revised: 03/25/2009] [Accepted: 04/02/2009] [Indexed: 10/20/2022]
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36
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Ohlberger J, Mehner T, Staaks G, Hölker F. Temperature-related physiological adaptations promote ecological divergence in a sympatric species pair of temperate freshwater fish,Coregonusspp. Funct Ecol 2008. [DOI: 10.1111/j.1365-2435.2008.01391.x] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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