1
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Lente V, Staszny Á, Hegedűs A, Weiperth A, Bányai ZM, Urbányi B, Ferincz Á. Growth of two invasive cichlids (Perciformes: Cichlidae) in a natural thermal water habitat of temperate Central Europe (Lake Hévíz, Hungary). Biol Futur 2024; 75:235-242. [PMID: 38386190 DOI: 10.1007/s42977-024-00208-4] [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: 07/20/2023] [Accepted: 01/23/2024] [Indexed: 02/23/2024]
Abstract
The outflow of the natural thermal Lake of Hévíz is habitat of several fish species, with conservation relevance. In the past few years, numerous thermophile (tropically originated) fishes were reported in this waterbody, from which two species Parachromis managuensis (Günther, 1867), Vieja melanurus (Günther, 1862) characterized with strong, self-sustaining population. The aim of our research was to provide basic population data and to study their individual growth. The standard length of jaguar cichlid ranged from 37 to 283 mm (mean SL = 110.21 ± 65.4 mm), the redhead cichlid standard length varied between 30 and 203 mm (mean SL = 93.91 ± 40.0 mm). Slightly positive allometry (b > 3) was found in the case of both species. The von Bertalanffy Growth Function can be described as the following Lt = 343.6[1 - e-0.196(t+0.973)] in jaguar cichlid and Lt = 298.9[1 - e-0.113(t+0.997)] in the case of redhead cichlid. The Bertalanffy growth equations show slow growth for both species. Fulton's condition factor (K) values varied between 1.376 and 2.11 (mean K = 1.701 ± 0.17) in the case of jaguar cichlid, and between 1.391 and 3.033 (mean K = 2.237 ± 0.24) for redhead cichlid. These baseline population biology data from the first known self-sustaining, temperate-zone populations of two tropical cichlids provide information e.g., for future ecological risk assessments or comparative growth analyzes.
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Affiliation(s)
- Vera Lente
- Department of Freshwater Fish Ecology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Gödöllő, Páter K.Str. 1, 2100, Hungary
| | - Ádám Staszny
- Department of Freshwater Fish Ecology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Gödöllő, Páter K.Str. 1, 2100, Hungary
| | - Anna Hegedűs
- Department of Freshwater Fish Ecology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Gödöllő, Páter K.Str. 1, 2100, Hungary
| | - András Weiperth
- Department of Freshwater Fish Ecology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Gödöllő, Páter K.Str. 1, 2100, Hungary
| | - Zsombor M Bányai
- Department of Freshwater Fish Ecology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Gödöllő, Páter K.Str. 1, 2100, Hungary
| | - Béla Urbányi
- Department of Aquaculture, Hungarian University of Agriculture and Life Sciences, Gödöllő, Páter K. Str. 1, 2100, Hungary
| | - Árpád Ferincz
- Department of Freshwater Fish Ecology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Gödöllő, Páter K.Str. 1, 2100, Hungary.
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2
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Zanghi C, Penry-Williams IL, Genner MJ, Deacon AE, Ioannou CC. Multiple environmental stressors affect predation pressure in a tropical freshwater system. Commun Biol 2024; 7:663. [PMID: 38811776 PMCID: PMC11137014 DOI: 10.1038/s42003-024-06364-6] [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: 02/02/2024] [Accepted: 05/21/2024] [Indexed: 05/31/2024] Open
Abstract
Environmental change can alter predator-prey dynamics. However, studying predators in the context of co-occurring environmental stressors remains rare, especially under field conditions. Using in situ filming, we examined how multiple stressors, including temperature and turbidity, impact the distribution and behaviour of wild fish predators of Trinidadian guppies (Poecilia reticulata). The measured environmental variables accounted for 17.6% of variance in predator species composition. While predator species differed in their associations with environmental variables, the overall prevalence of predators was greatest in slow flowing, deeper, warmer and less turbid habitats. Moreover, these warmer and less turbid habitats were associated with earlier visits to the prey stimulus by predators, and more frequent predator visits and attacks. Our findings highlight the need to consider ecological complexity, such as co-occurring stressors, to better understand how environmental change affects predator-prey interactions.
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Affiliation(s)
- Costanza Zanghi
- University of Bristol, School of Biological Sciences, Life Sciences Building, 24 Tyndall Avenue, Bristol, BS8 1TQ, UK.
| | - Iestyn L Penry-Williams
- University of Bristol, School of Biological Sciences, Life Sciences Building, 24 Tyndall Avenue, Bristol, BS8 1TQ, UK
| | - Martin J Genner
- University of Bristol, School of Biological Sciences, Life Sciences Building, 24 Tyndall Avenue, Bristol, BS8 1TQ, UK
| | - Amy E Deacon
- The University of The West Indies, Department of Life Sciences, St Augustine, Trinidad and Tobago
| | - Christos C Ioannou
- University of Bristol, School of Biological Sciences, Life Sciences Building, 24 Tyndall Avenue, Bristol, BS8 1TQ, UK
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3
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Valente S, Moro S, Di Lorenzo M, Milisenda G, Maiorano L, Colloca F. Mediterranean fish communities are struggling to adapt to global warming. Evidence from the western coast of Italy. MARINE ENVIRONMENTAL RESEARCH 2023; 191:106176. [PMID: 37716279 DOI: 10.1016/j.marenvres.2023.106176] [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: 07/21/2023] [Revised: 09/08/2023] [Accepted: 09/11/2023] [Indexed: 09/18/2023]
Abstract
Climate change has significant impacts on marine ecosystems, resulting in disruptions in biological interactions, shifts in community composition, and changes in the physiology of fish and other marine organisms. In this study conducted in the central Mediterranean Sea, the mean temperature of the catch (MTC) was employed as an indicator to investigate the climatological factors influencing the fish community. The MTC, which utilizes species-preferred temperatures, was calculated using bottom temperature (BT) data weighted against scientific catches. The estimated MTC increasing rates were 0.01 °C year-1 for the entire community, 0.017 °C year-1 for the shelf break, and 0.004 °C year-1 for the continental slope assemblage. We found that MTC is increasing at a lower rate compared to BT, suggesting a progressive under-adaptation of the fish community that seems not fully able to keep up with the ongoing pace of warming. The study identified sea surface temperature and bottom temperature as key drivers of changes in fish community composition. Notably, the fish community composition exhibited drastic changes over the studied period, and we suggest that the MTC can be a useful index to monitor such changes within the context of the EU's climate change adaptation strategy.
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Affiliation(s)
- Salvatore Valente
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, via Po' 25c, 00189, Rome, Italy; Department of Biology and Biotechnologies 'Charles Darwin', Sapienza University of Rome, Rome, Italy.
| | - Stefano Moro
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, via Po' 25c, 00189, Rome, Italy
| | - Manfredi Di Lorenzo
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Lungomare Cristoforo Colombo, I-90149, Palermo, Italy
| | - Giacomo Milisenda
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Lungomare Cristoforo Colombo, I-90149, Palermo, Italy
| | - Luigi Maiorano
- Department of Biology and Biotechnologies 'Charles Darwin', Sapienza University of Rome, Rome, Italy
| | - Francesco Colloca
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, via Po' 25c, 00189, Rome, Italy
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4
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Campana SE, Smoliński S, Black BA, Morrongiello JR, Alexandroff SJ, Andersson C, Bogstad B, Butler PG, Denechaud C, Frank DC, Geffen AJ, Godiksen JA, Grønkjaer P, Hjörleifsson E, Jónsdóttir IG, Meekan M, Mette M, Tanner SE, van der Sleen P, von Leesen G. Growth portfolios buffer climate-linked environmental change in marine systems. Ecology 2023; 104:e3918. [PMID: 36342309 DOI: 10.1002/ecy.3918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 10/04/2022] [Accepted: 10/07/2022] [Indexed: 11/09/2022]
Abstract
Large-scale, climate-induced synchrony in the productivity of fish populations is becoming more pronounced in the world's oceans. As synchrony increases, a population's "portfolio" of responses can be diminished, in turn reducing its resilience to strong perturbation. Here we argue that the costs and benefits of trait synchronization, such as the expression of growth rate, are context dependent. Contrary to prevailing views, synchrony among individuals could actually be beneficial for populations if growth synchrony increases during favorable conditions, and then declines under poor conditions when a broader portfolio of responses could be useful. Importantly, growth synchrony among individuals within populations has seldom been measured, despite well-documented evidence of synchrony across populations. Here, we used century-scale time series of annual otolith growth to test for changes in growth synchronization among individuals within multiple populations of a marine keystone species (Atlantic cod, Gadus morhua). On the basis of 74,662 annual growth increments recorded in 13,749 otoliths, we detected a rising conformity in long-term growth rates within five northeast Atlantic cod populations in response to both favorable growth conditions and a large-scale, multidecadal mode of climate variability similar to the East Atlantic Pattern. The within-population synchrony was distinct from the across-population synchrony commonly reported for large-scale environmental drivers. Climate-linked, among-individual growth synchrony was also identified in other Northeast Atlantic pelagic, deep-sea and bivalve species. We hypothesize that growth synchrony in good years and growth asynchrony in poorer years reflects adaptive trait optimization and bet hedging, respectively, that could confer an unexpected, but pervasive and stabilizing, impact on marine population productivity in response to large-scale environmental change.
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Affiliation(s)
- Steven E Campana
- Life and Environmental Sciences, University of Iceland, Reykjavik, Iceland
| | - Szymon Smoliński
- Institute of Marine Research, Bergen, Norway.,National Marine Fisheries Research Institute, Gdynia, Poland
| | - Bryan A Black
- Laboratory of Tree-Ring Research, University of Arizona, Tuscon, Arizona, USA
| | - John R Morrongiello
- School of BioSciences, University of Melbourne, Melbourne, Victoria, Australia
| | - Stella J Alexandroff
- Centre for Geography and Environmental Sciences, University of Exeter, Penryn, UK
| | - Carin Andersson
- NORCE Norwegian Research Centre, Bjerknes Centre for Climate Research, Bergen, Norway
| | | | - Paul G Butler
- Centre for Geography and Environmental Sciences, University of Exeter, Penryn, UK
| | - Côme Denechaud
- Institute of Marine Research, Bergen, Norway.,Department of Biological Sciences, University of Bergen, Bergen, Norway
| | - David C Frank
- Laboratory of Tree-Ring Research, University of Arizona, Tuscon, Arizona, USA
| | - Audrey J Geffen
- Department of Biological Sciences, University of Bergen, Bergen, Norway
| | | | - Peter Grønkjaer
- Aquatic Biology, Department of Biology, Aarhus University, Aarhus, Denmark
| | | | | | - Mark Meekan
- Australian Institute of Marine Science, Perth, Western Australia, Australia
| | - Madelyn Mette
- U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, Florida, USA
| | - Susanne E Tanner
- Marine and Environmental Sciences Centre and Department of Animal Biology, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
| | - Peter van der Sleen
- Wildlife Ecology and Conservation Group and Forest Ecology and Management Group, Wageningen University and Research Centre, Wageningen, The Netherlands
| | - Gotje von Leesen
- Life and Environmental Sciences, University of Iceland, Reykjavik, Iceland.,Aquatic Biology, Department of Biology, Aarhus University, Aarhus, Denmark
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5
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Canosa LF, Bertucci JI. The effect of environmental stressors on growth in fish and its endocrine control. Front Endocrinol (Lausanne) 2023; 14:1109461. [PMID: 37065755 PMCID: PMC10098185 DOI: 10.3389/fendo.2023.1109461] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Accepted: 03/13/2023] [Indexed: 04/03/2023] Open
Abstract
Fish body growth is a trait of major importance for individual survival and reproduction. It has implications in population, ecology, and evolution. Somatic growth is controlled by the GH/IGF endocrine axis and is influenced by nutrition, feeding, and reproductive-regulating hormones as well as abiotic factors such as temperature, oxygen levels, and salinity. Global climate change and anthropogenic pollutants will modify environmental conditions affecting directly or indirectly fish growth performance. In the present review, we offer an overview of somatic growth and its interplay with the feeding regulatory axis and summarize the effects of global warming and the main anthropogenic pollutants on these endocrine axes.
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Affiliation(s)
- Luis Fabián Canosa
- Instituto Tecnológico Chascomús (INTECH), CONICET-EByNT-UNSAM, Chascomús, Argentina
- *Correspondence: Luis Fabián Canosa, ; Juan Ignacio Bertucci,
| | - Juan Ignacio Bertucci
- Centro Oceanográfico de Vigo, Instituto Español de Oceanografía - Consejo Superior de Investigaciones Científicas (IEO-CSIC), Vigo, Spain
- *Correspondence: Luis Fabián Canosa, ; Juan Ignacio Bertucci,
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6
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Sørdalen TK, Halvorsen KT, Olsen EM. Protection from fishing improves body growth of an exploited species. Proc Biol Sci 2022; 289:20221718. [DOI: 10.1098/rspb.2022.1718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Hunting and fishing are often size-selective, which favours slow body growth. In addition, fast growth rate has been shown to be positively correlated with behavioural traits that increase encounter rates and catchability in passive fishing gears such as baited traps. This harvest-induced selection should be effectively eliminated in no-take marine-protected areas (MPAs) unless strong density dependence results in reduced growth rates. We compared body growth of European lobster (
Homarus gammarus
) between three MPAs and three fished areas. After 14 years of protection from intensive, size-selective lobster fisheries, the densities in MPAs have increased considerably, and we demonstrate that females moult more frequently and grow more during each moult in the MPAs. A similar, but weaker pattern was evident for males. This study suggests that MPAs can shield a wild population from slow-growth selection, which can explain the rapid recovery of size structure following implementation. If slow-growth selection is a widespread phenomenon in fisheries, the effectiveness of MPAs as a management tool can be higher than currently anticipated.
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Affiliation(s)
- Tonje Knutsen Sørdalen
- Centre for Coastal Research, Department of Natural Sciences, University of Agder, N-4604 Kristiansand, Norway
- Institute of Marine Research, Flødevigen, Nye Flødevigvei 20, N-4817 His, Norway
| | | | - Esben Moland Olsen
- Centre for Coastal Research, Department of Natural Sciences, University of Agder, N-4604 Kristiansand, Norway
- Institute of Marine Research, Flødevigen, Nye Flødevigvei 20, N-4817 His, Norway
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7
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DeWeber JT, Baer J, Rösch R, Brinker A. Turning summer into winter: nutrient dynamics, temperature, density dependence and invasive species drive bioenergetic processes and growth of a keystone coldwater fish. OIKOS 2022. [DOI: 10.1111/oik.09316] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- J. Tyrell DeWeber
- Fisheries Research Station Baden‐Württemberg Langenargen Germany
- Inst. of Inland Fisheries in Potsdam‐Sacrow Potsdam Germany
| | - Jan Baer
- Fisheries Research Station Baden‐Württemberg Langenargen Germany
| | - Roland Rösch
- Fisheries Research Station Baden‐Württemberg Langenargen Germany
| | - Alexander Brinker
- Fisheries Research Station Baden‐Württemberg Langenargen Germany
- Inst. for Limnology, Univ. of Constance Konstanz Germany
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8
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Sandoval-Castillo J, Beheregaray LB, Wellenreuther M. Genomic prediction of growth in a commercially, recreationally, and culturally important marine resource, the Australian snapper (Chrysophrys auratus). G3 (BETHESDA, MD.) 2022; 12:jkac015. [PMID: 35100370 PMCID: PMC8896003 DOI: 10.1093/g3journal/jkac015] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 01/07/2022] [Indexed: 06/14/2023]
Abstract
Growth is one of the most important traits of an organism. For exploited species, this trait has ecological and evolutionary consequences as well as economical and conservation significance. Rapid changes in growth rate associated with anthropogenic stressors have been reported for several marine fishes, but little is known about the genetic basis of growth traits in teleosts. We used reduced genome representation data and genome-wide association approaches to identify growth-related genetic variation in the commercially, recreationally, and culturally important Australian snapper (Chrysophrys auratus, Sparidae). Based on 17,490 high-quality single-nucleotide polymorphisms and 363 individuals representing extreme growth phenotypes from 15,000 fish of the same age and reared under identical conditions in a sea pen, we identified 100 unique candidates that were annotated to 51 proteins. We documented a complex polygenic nature of growth in the species that included several loci with small effects and a few loci with larger effects. Overall heritability was high (75.7%), reflected in the high accuracy of the genomic prediction for the phenotype (small vs large). Although the single-nucleotide polymorphisms were distributed across the genome, most candidates (60%) clustered on chromosome 16, which also explains the largest proportion of heritability (16.4%). This study demonstrates that reduced genome representation single-nucleotide polymorphisms and the right bioinformatic tools provide a cost-efficient approach to identify growth-related loci and to describe genomic architectures of complex quantitative traits. Our results help to inform captive aquaculture breeding programs and are of relevance to monitor growth-related evolutionary shifts in wild populations in response to anthropogenic pressures.
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Affiliation(s)
- Jonathan Sandoval-Castillo
- Molecular Ecology Laboratory, College of Science and Engineering, Flinders University, Bedford Park, SA 5042, Australia
| | - Luciano B Beheregaray
- Molecular Ecology Laboratory, College of Science and Engineering, Flinders University, Bedford Park, SA 5042, Australia
| | - Maren Wellenreuther
- School of Biological Sciences, The New Zealand Institute for Plant and Food Research Limited, Nelson 7010, New Zealand
- Seafood Production Group, The School of Biological Sciences, University of Auckland, Auckland 1010, New Zealand
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9
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Denechaud C, Geffen AJ, Smoliński S, Godiksen JA. Otolith "spawning zones" across multiple Atlantic cod populations: Do they accurately record maturity and spawning? PLoS One 2021; 16:e0257218. [PMID: 34516576 PMCID: PMC8437307 DOI: 10.1371/journal.pone.0257218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 08/25/2021] [Indexed: 11/28/2022] Open
Abstract
Specific changes identified in the otolith macrostructure of Northeast Arctic cod as “spawning zones” are presumed to represent spawning events, but recent experimental studies have challenged this relationship. Because these zones are not routinely recorded outside of Norway, otoliths from multiple Atlantic cod populations with different life history and environmental traits were first examined to see if spawning zones could be identified as a general characteristic of cod. Then, a large archival collection of cod otoliths was used to investigate temporal changes in the occurrence of spawning zones and test for correlations between maturity at age derived from otolith spawning zones and gonad maturity stages. This study shows that spawning zones likely are a universal trait of Atlantic cod and not limited to certain environments or migratory behaviors as previously proposed. Maturity at age derived from spawning zone data showed trends consistent with those from gonad examinations. However, spawning zones appear to form with a one- or two-year lag with sexual maturity, which is suspected to reflect a stabilizing of energy partitioning after the first spawning events. Our results illustrate the potential for use of spawning zones, for example in species or populations with limited available maturity data, and highlights the need for addressing the physiological processes behind their formation.
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Affiliation(s)
- Côme Denechaud
- Demersal Fish Research Group, Institute of Marine Research (HI), Bergen, Norway
- Department of Biological Sciences, University of Bergen (UiB), Bergen, Norway
- * E-mail:
| | - Audrey J. Geffen
- Demersal Fish Research Group, Institute of Marine Research (HI), Bergen, Norway
- Department of Biological Sciences, University of Bergen (UiB), Bergen, Norway
| | - Szymon Smoliński
- Demersal Fish Research Group, Institute of Marine Research (HI), Bergen, Norway
- Department of Fisheries Resources, National Marine Fisheries Research Institute, Gdynia, Poland
| | - Jane A. Godiksen
- Demersal Fish Research Group, Institute of Marine Research (HI), Bergen, Norway
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10
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Bolle LJ, Hoek R, Pennock I, Poiesz SSH, van Beusekom JEE, van der Veer HW, Witte JI, Tulp I. No evidence for reduced growth in resident fish species in the era of de-eutrophication in a coastal area in NW Europe. MARINE ENVIRONMENTAL RESEARCH 2021; 169:105364. [PMID: 34087761 DOI: 10.1016/j.marenvres.2021.105364] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 04/04/2021] [Accepted: 05/11/2021] [Indexed: 06/12/2023]
Abstract
Coastal areas in north-western Europe have been influenced by elevated nutrient levels starting in the 1960s. Due to efficient measures, both nitrate and phosphate levels decreased since the mid-1980s. The co-occurring declines in nutrient loadings and fish productivity are often presumed to be causally linked. We investigated whether four resident fish species (twaite shad, bull-rout, thick-lipped grey mullet and eelpout), that spend the majority of their life in the vicinity of the coast, differed in growth between the historic eutrophication period compared to the recent lower nutrient-level period. Based on Von Bertalanffy growth models of length at age, and the analysis of annual otolith increments, we investigated the difference in sex-specific growth patterns and related these to temperature, eutrophication level (Chlorophyll a), growth window and fish density. In all four species, annual otolith growth rates during the early life stages differed between the two periods, mostly resulting in larger lengths at age in the recent period. All species showed significant correlations between increment size and temperature, explaining the observed period differences. The lack of an effect of total fish biomass provided no evidence for density dependent growth. A correlation with chlorophyll was found in bull-rout, but the relationship was negative, thus not supporting the idea of growth enhanced by high nutrient levels. In conclusion, we found no evidence for reduced growth related to de-eutrophication. Our results indicate that temperature rise due to climate change had a greater impact on growth than reduced food availability due to de-eutrophication. We discuss potential consequences of growth changes for length-based indicators used in management.
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Affiliation(s)
- Loes J Bolle
- Wageningen Marine Research, IJmuiden, the Netherlands.
| | - Ruben Hoek
- Wageningen Marine Research, IJmuiden, the Netherlands.
| | - Ineke Pennock
- Wageningen Marine Research, IJmuiden, the Netherlands.
| | - Suzanne S H Poiesz
- NIOZ Royal Netherlands Institute of Sea Research, Den Burg, the Netherlands.
| | | | | | | | - Ingrid Tulp
- Wageningen Marine Research, IJmuiden, the Netherlands.
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11
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Smoliński S, Denechaud C, von Leesen G, Geffen AJ, Grønkjær P, Godiksen JA, Campana SE. Differences in metabolic rate between two Atlantic cod (Gadus morhua) populations estimated with carbon isotopic composition in otoliths. PLoS One 2021; 16:e0248711. [PMID: 33793572 PMCID: PMC8016290 DOI: 10.1371/journal.pone.0248711] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 03/03/2021] [Indexed: 11/18/2022] Open
Abstract
The isotopic composition of inorganic carbon in otoliths (δ13Coto) can be a useful tracer of metabolic rates and a method to study ecophysiology in wild fish. We evaluated environmental and physiological sources of δ13Coto variation in Icelandic and Northeast Arctic (NEA) cod (Gadus morhua) over the years 1914–2013. Individual annual growth increments of otoliths formed at age 3 and 8 were micromilled and measured by isotope-ratio mass spectrometry. Simultaneously, all annual increment widths of the otoliths were measured providing a proxy of fish somatic growth. We hypothesized that changes in the physiological state of the organism, reflected by the isotopic composition of otoliths, can affect the growth rate. Using univariate and multivariate mixed-effects models we estimated conditional correlations between carbon isotopic composition and growth of fish at different levels (within individuals, between individuals, and between years), controlling for intrinsic and extrinsic effects on both otolith measurements. δ13Coto was correlated with growth within individuals and between years, which was attributed to the intrinsic effects (fish age or total length). There was no significant correlation between δ13Coto and growth between individuals, which suggests that caution is needed when interpreting δ13Coto signals. We found a significant decrease in δ13Coto through the century which was explained by the oceanic Suess effect-admixture of isotopically light carbon from fossil fuel. We calculated the proportion of the respired carbon in otolith carbonate (Cresp) using carbon isotopic composition in diet and dissolved inorganic carbon of the seawater. This approach allowed us to correct the values for each stock in relation to these two environmental baselines. Cresp was on average 0.275 and 0.295 in Icelandic and NEA stock, respectively. Our results provide an insight into the physiological basis for differences in growth characteristics between these two cod stocks, and how that may vary over time.
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Affiliation(s)
- Szymon Smoliński
- Institute of Marine Research, Nordnes, Bergen, Norway
- Department of Fisheries Resources, National Marine Fisheries Research Institute, Gdynia, Poland
- * E-mail:
| | - Côme Denechaud
- Institute of Marine Research, Nordnes, Bergen, Norway
- Department of Biological Sciences, University of Bergen, Bergen, Norway
| | - Gotje von Leesen
- Faculty of Life and Environmental Sciences, University of Iceland, Reykjavik, Iceland
| | - Audrey J. Geffen
- Institute of Marine Research, Nordnes, Bergen, Norway
- Department of Biological Sciences, University of Bergen, Bergen, Norway
| | - Peter Grønkjær
- Aquatic Biology, Department of Bioscience, Aarhus University, Aarhus, Denmark
| | | | - Steven E. Campana
- Faculty of Life and Environmental Sciences, University of Iceland, Reykjavik, Iceland
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12
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Century-long cod otolith biochronology reveals individual growth plasticity in response to temperature. Sci Rep 2020; 10:16708. [PMID: 33028859 PMCID: PMC7541619 DOI: 10.1038/s41598-020-73652-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 09/21/2020] [Indexed: 11/08/2022] Open
Abstract
Otolith biochronologies combine growth records from individual fish to produce long-term growth sequences, which can help to disentangle individual from population-level responses to environmental variability. This study assessed individual thermal plasticity of Atlantic cod (Gadus morhua) growth in Icelandic waters based on measurements of otolith increments. We applied linear mixed-effects models and developed a century-long growth biochronology (1908-2014). We demonstrated interannual and cohort-specific changes in the growth of Icelandic cod over the last century which were mainly driven by temperature variation. Temperature had contrasting relationships with growth-positive for the fish during the youngest ages and negative during the oldest ages. We decomposed the effects of temperature on growth observed at the population level into within-individual effects and among-individual effects and detected significant individual variation in the thermal plasticity of growth. Variance in the individual plasticity differed across cohorts and may be related to the mean environmental conditions experienced by the group. Our results underscore the complexity of the relationships between climatic conditions and the growth of fish at both the population and individual level, and highlight the need to distinguish between average population responses and growth plasticity of the individuals for accurate growth predictions.
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