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Daigle NJ, Djokic MA, Kappenman KM, Gaylord TG, Quinn S, Verhille CE. Validation of a microwave energy meter to non-lethally estimate energetic reserves in adult sturgeon. CONSERVATION PHYSIOLOGY 2023; 11:coad023. [PMID: 37179708 PMCID: PMC10170255 DOI: 10.1093/conphys/coad023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 03/21/2023] [Accepted: 04/13/2023] [Indexed: 05/15/2023]
Abstract
Whole-body (WB) energetic reserves influence fish survival, growth, and reproduction but are typically quantified using lethal methods (i.e. proximate analyses) or interpreted through body condition indices. Energetic reserves can impact population dynamics through influences on growth rates, age-at-first-reproductive-maturity, and spawning periodicity at the individual-fish level, especially in long-lived sturgeon species. Therefore, a non-lethal tool to track the energetic reserves of endangered sturgeon populations could inform adaptive management and further our understanding of the sturgeon's biology. The Distell Fatmeter is a microwave energy meter that has been validated to non-lethally estimate energetic reserves in some fish species, but never successfully for sturgeon. Here, stepwise linear regressions were applied to test commonly monitored body metrics and Fatmeter measurements at nine different anatomical sites on captive adult pallid sturgeon (Scaphirhynchus albus; total length of 790-1015 mm; WB lipid of 13.9-33.3%) compared with WB lipid and energy content determined by proximate analyses. Fatmeter measurements alone explained approximately 70% of the variation in WB energetic reserves, which outperformed models considering body metrics alone by a margin of approximately 20%. The top-ranked models based on AICc score (second-order Akaike Information Criterion) included a combination of body metrics and Fatmeter measurements and accounted for up to 76% of the variation in WB lipid and energy. We recommend the incorporation of Fatmeter measurements at a single site located dorsally to the lateral scutes at the posterior end of the fish above the pelvic fins (U-P) into conservation monitoring programs for adult pallid sturgeon (total length [TL] ≥ 790 mm; fork length [FL] ≥ 715 mm) and the cautious application of Fatmeter measurements for sturgeon between 435 and 790 mm TL (375-715 mm FL). Measurements at this U-P site combined with body mass explained approximately 75% of the variation in WB lipid and energy.
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Affiliation(s)
- Nicole J Daigle
- Department of Biology, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada
| | - Matea A Djokic
- Department of Ecology and Evolutionary Biology, University of California, Irvine, CA, 92697-2525, USA
| | - Kevin M Kappenman
- Bozeman Fish Technology Center, U.S. Fish and Wildlife Service, Bozeman, MT, 59715, USA
| | - T Gibson Gaylord
- Bozeman Fish Technology Center, U.S. Fish and Wildlife Service, Bozeman, MT, 59715, USA
| | - Sierra Quinn
- Department of Ecology, Montana State University, Bozeman, MT, 59715, USA
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Campanini C, Albo-Puigserver M, Gérez S, Lloret-Lloret E, Giménez J, Pennino MG, Bellido JM, Colmenero AI, Coll M. Energy content of anchovy and sardine using surrogate calorimetry methods. MARINE ENVIRONMENTAL RESEARCH 2021; 172:105510. [PMID: 34717130 DOI: 10.1016/j.marenvres.2021.105510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 10/19/2021] [Accepted: 10/20/2021] [Indexed: 06/13/2023]
Abstract
European anchovy (Engraulis encrasicolus) and sardine (Sardina pilchardus) are crucial species for the marine ecosystem of the Northwestern Mediterranean Sea. They account for a high percentage of fish landings and they represent an important economic income for the fishery sector. Concerns over their stock status are rising in recent years as biomass, growth, reproductive capacity, and body condition of both species are declining, with latitudinal variations. Therefore, there is an urgent need for a body condition monitoring scheme. Energy storage variability has important implications for both fish recruitment and population structure. Direct condition indices, such as energy density (ED) with bomb calorimetry, are highly reliable for measuring the energy content, but time-consuming. Alternatively, fatmeter analysis and relative condition index (Kn) have been proposed as effective indirect methods. The aim of this study is to test the application of fatmeter as a surrogate of bomb calorimetry to infer the energy content of sardine and anchovy. To validate its use, fatmeter values were compared with both ED and Kn values. Individuals of both species were sampled monthly for a year in order to assess seasonal variations in energy content. Our results highlight that fatmeter measurements are strongly correlated with calorimetry ED for sardine, while a weaker but significant correlation was found for anchovy. The observed differences between the two species are related to their breeding strategies. Based on this study, Kn cannot be considered a good proxy of the energy density of sardine, in particular during the resting period. By contrast, fatmeter analysis appears to be a faster and suitable method to evaluate the energy content of both species routinely. In addition, we provide a linear model to infer ED from fatmeter values for both small pelagic fish. Eventually, these findings could be used to implement body condition monitoring protocols and boost continuous large-scale monitoring.
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Affiliation(s)
- Claudia Campanini
- Department of Renewable Marine Resources, Institute of Marine Sciences (ICM-CSIC), Barcelona, 08003, Spain.
| | - Marta Albo-Puigserver
- Department of Renewable Marine Resources, Institute of Marine Sciences (ICM-CSIC), Barcelona, 08003, Spain; Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Campus de Gambelas, Faro, 8005-139, Portugal
| | - Sara Gérez
- Department of Renewable Marine Resources, Institute of Marine Sciences (ICM-CSIC), Barcelona, 08003, Spain
| | - Elena Lloret-Lloret
- Department of Renewable Marine Resources, Institute of Marine Sciences (ICM-CSIC), Barcelona, 08003, Spain
| | - Joan Giménez
- Department of Renewable Marine Resources, Institute of Marine Sciences (ICM-CSIC), Barcelona, 08003, Spain; MaREI Centre, Environmental Research Institute, University College Cork, Cork, P43 C573, Ireland
| | - Maria Grazia Pennino
- Fishery Department, Instituto Español de Oceanografía (IEO-CSIC). Centro Oceanográfico de Vigo. Subida a Radio Faro, 50-52, Vigo, Pontevedra, 36390, Spain
| | - José María Bellido
- Fishery Department, Instituto Español de Oceanografía (IEO-CSIC), Centro Oceanográfico de Murcia, San Pedro del Pinatar, 30740, Spain
| | - Ana I Colmenero
- Department of Renewable Marine Resources, Institute of Marine Sciences (ICM-CSIC), Barcelona, 08003, Spain
| | - Marta Coll
- Department of Renewable Marine Resources, Institute of Marine Sciences (ICM-CSIC), Barcelona, 08003, Spain
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Difford GF, Díaz-Gil C, Sánchez-Moya A, Aslam ML, Horn SS, Ruyter B, Herlin M, Lopez M, Sonesson AK. Genomic and Phenotypic Agreement Defines the Use of Microwave Dielectric Spectroscopy for Recording Muscle Lipid Content in European Seabass ( Dicentrarchus labrax). Front Genet 2021; 12:671491. [PMID: 34527016 PMCID: PMC8435770 DOI: 10.3389/fgene.2021.671491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 08/06/2021] [Indexed: 11/13/2022] Open
Abstract
Recording the fillet lipid percentage in European seabass is crucial to control lipid deposition as a means toward improving production efficiency and product quality. The reference method for recording lipid content is solvent lipid extraction and is the most accurate and precise method available. However, it is costly, requires sacrificing the fish and grinding the fillet sample which limits the scope of applications, for example grading of fillets, recording live fish or selective breeding of fish with own phenotypes are all limited. We tested a rapid, cost effective and non-destructive handheld microwave dielectric spectrometer (namely the Distell fat meter) against the reference method by recording both methods on 313 European seabass (Dicentrarchus labrax). The total method agreement between the dielectric spectrometer and the reference method was assessed by Lin’s concordance correlation coefficient (CCC), which was low to moderate CCC = 0.36–0.63. We detected a significant underestimation in accuracy of lipid percentage 22–26% by the dielectric spectrometer and increased imprecision resulting in the coefficient of variation (CV) doubling for dielectric spectrometer CV = 40.7–46% as compared to the reference method 27–31%. Substantial genetic variation for fillet lipid percentage was found for both the reference method (h2 = 0.59) and dielectric spectroscopy (h2 = 0.38–0.58), demonstrating that selective breeding is a promising method for controlling fillet lipid content. Importantly, the genetic correlation (rg) between the dielectric spectrometer and the reference method was positive and close to unity (rg = 0.96), demonstrating the dielectric spectrometer captures practically all the genetic variation in the reference method. These findings form the basis of defining the scope of applications and experimental design for using dielectric spectroscopy for recording fillet lipid content in European seabass and validate its use for selective breeding.
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Affiliation(s)
| | | | - Albert Sánchez-Moya
- Department of Cell Biology, Physiology, and Immunology, Faculty of Biology, University of Barcelona, Barcelona, Spain
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Moorhead SG, Gallagher AJ, Merly L, Hammerschlag N. Variation of body condition and plasma energy substrates with life stage, sex, and season in wild-sampled nurse sharks Ginglymostoma cirratum. JOURNAL OF FISH BIOLOGY 2021; 98:680-693. [PMID: 33161578 DOI: 10.1111/jfb.14612] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 10/23/2020] [Accepted: 11/07/2020] [Indexed: 06/11/2023]
Abstract
Reported here are the relationships among morphological (i.e., body condition) and biochemical (i.e., plasma concentrations of triglycerides, cholesterol, free fatty acids, and ketone bodies and ketone body ratios) parameters related to energy storage and use, as well as the variation of such parameters, for 107 free-ranging nurse sharks Ginglymostoma cirratum sampled off South Florida. Immature G. cirratum exhibited a higher variance in body condition, plasma free fatty acid concentrations and ketone body ratios compared to adults. Mature female G. cirratum had significantly higher body condition than mature males, driven by a seasonal increase in mature female body condition during the wet season. Mature male G. cirratum showed a decrease in the ketone body β-hydroxybutyric acid during the dry season. Taken together, this study provides a baseline assessment of body condition and internal physiological state for a data-poor marine species and demonstrates significant ontogenetic, sexual and seasonal variation in G. cirratum energetic state. As concluded by other studies of energy metabolism in free-ranging sharks, this research highlights the importance of considering intraspecific patterns and sampling context for inferring the drivers of variation.
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Affiliation(s)
- Shannon G Moorhead
- Department of Marine Ecosystems and Society, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, Florida, USA
| | - Austin J Gallagher
- Beneath the Waves, Herndon, Virginia, USA
- Fish Ecology and Conservation Physiology Laboratory, Carleton University, Ottawa, Ontario, Canada
| | - Liza Merly
- Department of Marine Biology and Ecology, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, Florida, USA
| | - Neil Hammerschlag
- Department of Marine Ecosystems and Society, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, Florida, USA
- Leonard and Jayne Abess Center for Ecosystem Science and Policy, University of Miami, Coral Gables, Florida, USA
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Guan Y, Zhang K, Xu F, Guo R, Fang A, Sun B, Meng X, Liu Y, Bai M. An integrated platform for fibrinogen quantification on a microfluidic paper-based analytical device. LAB ON A CHIP 2020; 20:2724-2734. [PMID: 32588856 DOI: 10.1039/d0lc00439a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Fibrinogen (FIB) plays a key role in blood coagulation and thrombosis and its concentration in blood can directly reflect health conditions, thus efficient detection of FIB would benefit the treatments of certain diseases such as liver and heart diseases. However, there is a lack of sensitive, simple, rapid and cheap FIB detection device currently, in lieu of expensive and sophisticated approaches in laboratories. Here, we propose a novel plasma separation and FIB detection platform based on a microfluidic paper-based analytical device (μPAD). It is the first time that dielectrophoretic (DEP) force is combined with capillary force on paper for plasma separation, and the separation efficiency of plasma reaches about 95%, ensuring reliable downstream FIB detection, for which we also propose a new method called the resistance-fibrinogen detection (RFD) method. It not only avoids the use of large-scale instruments for detection, but also possesses high precision and simplicity. The method is found to be reliable in FIB detection for various concentrations ranging from 127.0 to 508.0 mg dL-1. Moreover, the results obtained from the proposed μPAD show an excellent agreement (R2 = 0.9985) with those obtained from an automatic coagulation analyzer with natural human blood samples. Overall, the proposed platform provides a low-cost and reliable approach for FIB detection, especially for clinical use in resource-limited areas.
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Affiliation(s)
- Yanfang Guan
- College of Electromechanical Engineering, Henan University of Technology, Zhengzhou 450001, China.
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