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Mette M, Andersson C, Schöne B, Bonitz F, Melvik V, Trofimova T, Miles M. Two centuries of southwest Iceland annually-resolved marine temperature reconstructed from Arctica islandica shells. Estuar Coast Shelf Sci 2023; 294:108525. [PMID: 38058294 PMCID: PMC10695767 DOI: 10.1016/j.ecss.2023.108525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 08/31/2023] [Accepted: 10/06/2023] [Indexed: 12/08/2023]
Abstract
Iceland's exposure to major ocean current pathways of the central North Atlantic makes it a useful location for developing long-term proxy records of past marine climate. Such records provide more detailed understanding of the full range of past variability which is necessary to improve predictions of future changes. We constructed a 225-year (1791-2015 CE) master shell growth chronology from 29 shells of Arctica islandica collected at 100 m water depth in southwest Iceland (Faxaflói). The growth chronology provides a robust age model for shell oxygen isotope (δ18Oshell) data produced at annual resolution for 251 years (1765-2015 CE). The temperature reconstruction derived from δ18Oshell shows coherence with May-October local surface temperature records and sea surface temperatures in the North Atlantic region, suggesting it is a useful proxy indicator of water temperature variability at 100 m depth within Faxaflói. Field correlations between the shell-based records and gridded sea surface temperature data reveal strong positive correlations between the 1-year lagged shell growth and temperatures within the subpolar gyre post-1972, suggesting a delayed influence of subpolar gyre dynamics on ecological indicators in southwest Iceland in recent decades. However, the shell growth chronology and δ18Oshell record generally show relatively weak and insignificant correlations with larger region climate indices including the Atlantic Multidecadal Variability, North Atlantic Oscillation, and East Atlantic pattern. Therefore the interannual variations in the newly produced shell-based records appear to reflect more local to regional dynamics around southwest Iceland than large-scale modes of climate variability.
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Affiliation(s)
- M.J. Mette
- U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, Florida, USA
- NORCE Norwegian Research Centre, Bjerknes Centre for Climate Research, Bergen, Norway
| | - C. Andersson
- NORCE Norwegian Research Centre, Bjerknes Centre for Climate Research, Bergen, Norway
| | - B.R. Schöne
- Institute of Geosciences, University of Mainz, Mainz, Germany
| | - F.G.W. Bonitz
- NORCE Norwegian Research Centre, Bjerknes Centre for Climate Research, Bergen, Norway
| | - V. Melvik
- NORCE Norwegian Research Centre, Bjerknes Centre for Climate Research, Bergen, Norway
| | - T. Trofimova
- NORCE Norwegian Research Centre, Bjerknes Centre for Climate Research, Bergen, Norway
| | - M.W. Miles
- NORCE Norwegian Research Centre, Bjerknes Centre for Climate Research, Bergen, Norway
- Institute of Arctic and Alpine Research, University of Colorado, Boulder, USA
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2
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Thébault J, Uvanović H, Amice E, Chauvaud L, Peharda M. Influence of sea-ice dynamics on coastal Antarctic benthos: A case study on lantern clams (Laternula elliptica) in Adélie Land. Mar Environ Res 2023; 192:106220. [PMID: 37832282 DOI: 10.1016/j.marenvres.2023.106220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/29/2023] [Accepted: 10/06/2023] [Indexed: 10/15/2023]
Abstract
Polar regions are warming faster than the world average and are profoundly affected by changes in the spatio-temporal dynamics of sea ice, with largely unknown repercussions on the functioning of marine ecosystems. Here, we investigated the impacts of interannual sea-ice variability on coastal benthic communities in Antarctica, focusing on a close-to-pristine area (Adélie Land). We investigated shell growth of the circum-Antarctic bivalve Laternula elliptica, considered a key species in these soft bottom benthic communities. Chondrophores of live-collected clams were prepared using standard sclerochronological methods to study the interannual variability of shell growth from 1996 to 2015. Our results show that the master chronology varied with sea-ice dynamics. When sea ice breaks up too early, sympagic algae do not have time to accumulate sufficiently high biomass, thus strongly limiting the energy input to the benthos. This negatively affects the physiological performance of L. elliptica, thereby altering their population dynamics and hence the functioning of these soft-bottom ecosystems.
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Affiliation(s)
| | - Hana Uvanović
- Institute of Oceanography and Fisheries, Split, Croatia
| | - Erwan Amice
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, Plouzane, France
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3
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Zhao L, Harvey BP, Higuchi T, Agostini S, Tanaka K, Murakami-Sugihara N, Morgan H, Baker P, Hall-Spencer JM, Shirai K. Ocean acidification stunts molluscan growth at CO 2 seeps. Sci Total Environ 2023; 873:162293. [PMID: 36813205 DOI: 10.1016/j.scitotenv.2023.162293] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 02/07/2023] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
Ocean acidification can severely affect bivalve molluscs, especially their shell calcification. Assessing the fate of this vulnerable group in a rapidly acidifying ocean is therefore a pressing challenge. Volcanic CO2 seeps are natural analogues of future ocean conditions that offer unique insights into the scope of marine bivalves to cope with acidification. Here, we used a 2-month reciprocal transplantation of the coastal mussel Septifer bilocularis collected from reference and elevated pCO2 habitats to explore how they calcify and grow at CO2 seeps on the Pacific coast of Japan. We found significant decreases in condition index (an indication of tissue energy reserves) and shell growth of mussels living under elevated pCO2 conditions. These negative responses in their physiological performance under acidified conditions were closely associated with changes in their food sources (shown by changes to the soft tissue δ13C and δ15N ratios) and changes in their calcifying fluid carbonate chemistry (based on shell carbonate isotopic and elemental signatures). The reduced shell growth rate during the transplantation experiment was further supported by shell δ13C records along their incremental growth layers, as well as their smaller shell size despite being of comparable ontogenetic ages (5-7 years old, based on shell δ18O records). Taken together, these findings demonstrate how ocean acidification at CO2 seeps affects mussel growth and reveal that lowered shell growth helps them survive stressful conditions.
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Affiliation(s)
- Liqiang Zhao
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China; Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan.
| | - Ben P Harvey
- Shimoda Marine Research Center, University of Tsukuba, Shimoda 415-0025, Japan.
| | - Tomihiko Higuchi
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan
| | - Sylvain Agostini
- Shimoda Marine Research Center, University of Tsukuba, Shimoda 415-0025, Japan
| | - Kentaro Tanaka
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan
| | | | - Holly Morgan
- School of Biological and Marine Sciences, University of Plymouth, Plymouth PL4 8AA, UK
| | - Phoebe Baker
- School of Biological and Marine Sciences, University of Plymouth, Plymouth PL4 8AA, UK
| | - Jason M Hall-Spencer
- Shimoda Marine Research Center, University of Tsukuba, Shimoda 415-0025, Japan; School of Biological and Marine Sciences, University of Plymouth, Plymouth PL4 8AA, UK
| | - Kotaro Shirai
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan
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Poitevin P, Roy V, Galbraith PS, Chaillou G. Insights into coastal phytoplankton variations from 1979 to 2018 derived from Ba/Ca records in scallop shells (Chlamys islandica) from a fishing ground in the northern Gulf of St. Lawrence. Mar Environ Res 2022; 181:105734. [PMID: 36148737 DOI: 10.1016/j.marenvres.2022.105734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 08/04/2022] [Accepted: 08/22/2022] [Indexed: 06/16/2023]
Abstract
Bivalve growth is affected by phytoplankton quality and availability, but long-term, coastal environmental time series related to these parameters are often lacking. Therefore, it is crucial to develop methods to accurately quantify trends in phytoplankton dynamics over time. This would be especially important for the fished scallop beds in the northern Gulf of St. Lawrence, where landings sharply declined since the early-2000s. Over the past decade, many studies have highlighted the potential of Ba/Ca ratios in bivalve shells as an environmental proxy for phytoplankton dynamics. This study presents records of Ba/Ca ratios in 31 young Chlamys islandica shells sampled in the Mingan Archipelago from 1979 to 2018. The Ba/Ca master chronology showed a decreasing trend since 2002, which could reflect changes in local phytoplankton bloom taxonomic composition, and coincides with the aforementioned decline in scallop landings. Investigations of environmental controls on barium incorporation into the shells highlight the importance of bottom, nutrient-rich waters to support diatom production or export in this fishing area. The use of such high-resolution seasonal records extracted from bio-archives may identify essential environmental mechanisms that will then assist with the development of an ecosystem-based fishery management strategy.
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Affiliation(s)
- Pierre Poitevin
- Fisheries and Oceans Canada, Maurice Lamontagne Institute, Mont-Joli, QC, Canada.
| | - Virginie Roy
- Fisheries and Oceans Canada, Maurice Lamontagne Institute, Mont-Joli, QC, Canada
| | - Peter S Galbraith
- Fisheries and Oceans Canada, Maurice Lamontagne Institute, Mont-Joli, QC, Canada
| | - Gwenaëlle Chaillou
- Canada Research Chair in Geochemistry of Coastal Hydrogeosystems, Québec-Océan, ISMER, UQAR, Rimouski, Canada
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Castrillejo M, Witbaard R, Richardson CA, Dekker R, Welte C, Wacker L, Christl M. Impact of nuclear fuel reprocessing on the temporal evolution of marine radiocarbon. Sci Total Environ 2020; 738:139700. [PMID: 32534284 DOI: 10.1016/j.scitotenv.2020.139700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/23/2020] [Accepted: 05/23/2020] [Indexed: 06/11/2023]
Abstract
Radiocarbon (14C) is broadly used in oceanography to determine water ages, trace water circulation, and develop sediment- and sclerochronologies. These applications require an accurate knowledge of marine 14C levels, which have been largely perturbed by human activities. Globally during the last century the above-ground nuclear weapon testings have been the primary cause of the increased atmospheric and marine 14C. However, other anthropogenic sources may have caused important regional deviations from the bomb pulse. For the last 70 years European nuclear fuel reprocessing plants have been major contributors of 14C to air and oceans, yet, their regional impact on surrounding marine 14C has been largely overlooked. Here we use a collection of bivalve shells of known capture date and age collected from various locations, including the North Sea, the Irish Sea, Norway, and the Bay of Biscay to reconstruct the sea surface 14C over the last five decades. The measured 14C values for the period 1969-2019, reported in fraction modern, ranged from 1.1 to 1.6 in coastal waters of the Netherlands and from 1.2 to 3.2 along the coast of the UK, indicating significantly higher levels of 14C than those expected for the marine bomb pulse (0.950-1.150). The 14C peaks revealed by the shells coincide with the increase of liquid 14C releases reported from the reprocessing plants of La Hague into the English Channel, and from Sellafield into the Irish Sea. Conversely, the shells from Norway and Spain showed 14C values close to the range of the global marine bomb pulse. The observed large spatial and temporal differences in sea surface 14C show that 14C dating and tracing studies could become problematic in the English Channel, Irish Sea and North Sea for the time period covering the discharge of liquid 14C from the reprocessing plants.
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Affiliation(s)
- Maxi Castrillejo
- Laboratory of Ion Beam Physics, ETH - Zurich, Otto Stern Weg 5, 8093 Zurich, Switzerland.
| | - Rob Witbaard
- NIOZ Royal Netherlands Institute for Sea Research and Utrecht University, PO Box 59, 1790 AB Den Burg, the Netherlands
| | | | - Rob Dekker
- NIOZ Royal Netherlands Institute for Sea Research and Utrecht University, PO Box 59, 1790 AB Den Burg, the Netherlands
| | - Caroline Welte
- Laboratory of Ion Beam Physics, ETH - Zurich, Otto Stern Weg 5, 8093 Zurich, Switzerland; Biogeosciences, ETH - Zurich, Sonneggstrasse 5, 8092 Zurich, Switzerland
| | - Lukas Wacker
- Laboratory of Ion Beam Physics, ETH - Zurich, Otto Stern Weg 5, 8093 Zurich, Switzerland
| | - Marcus Christl
- Laboratory of Ion Beam Physics, ETH - Zurich, Otto Stern Weg 5, 8093 Zurich, Switzerland
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Castrillejo M, Witbaard R, Casacuberta N, Richardson CA, Dekker R, Synal HA, Christl M. Unravelling 5 decades of anthropogenic 236U discharge from nuclear reprocessing plants. Sci Total Environ 2020; 717:137094. [PMID: 32062259 DOI: 10.1016/j.scitotenv.2020.137094] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 01/30/2020] [Accepted: 02/01/2020] [Indexed: 06/10/2023]
Abstract
Marine biogenic materials such as corals, shells, or seaweed have long been recognized as recorders of environmental conditions. Here, the bivalve Cerastoderma edule is used for the first time as a recorder of past seawater contamination with anthropogenic uranium, specifically 236U. Several studies have employed the authorized radioactive releases, including 236U, from nuclear reprocessing plants in La Hague, France, into the English Channel, and Sellafield, England, into the Irish Sea, to trace Atlantic waters and to understand recent climate induced circulation changes in the Arctic Ocean. Anthropogenic 236U has emerged over recent years as a new transient tracer to track these changes, but its application has been challenged owing to paucity of fundamental data on the input (timing and amount) of 236U from Sellafield. Here, we present 236U/238U data from bivalve shells collected close to La Hague and Sellafield from two unique shell collections that allow the reconstruction of the historical 236U contamination of seawater since the 1960s, mostly with bi-annual resolution. The novel archive is first validated by comparison with well-documented 236U discharges from La Hague. Then, shells from the Irish Sea are used to reconstruct the regional 236U contamination. Apart from defining new, observationally based 236U input functions that will allow more precise tracer studies in the Arctic Ocean, we find an unexpected peak of 236U releases to the Irish Sea in the 1970s. Using this peak, we provide evidence for a small, but significant recirculation of Irish Sea water into the English Channel. Tracing the 1970s peak should allow extending 236U tracer studies into the South Atlantic Ocean.
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Affiliation(s)
- Maxi Castrillejo
- Laboratory of Ion Beam Physics, ETH - Zurich, Otto Stern Weg 5, 8093 Zurich, Switzerland.
| | - Rob Witbaard
- NIOZ Royal Netherlands Institute for Sea Research and Utrecht University, PO Box 59, 1790 Ab Den Burg, the Netherlands
| | - Núria Casacuberta
- Laboratory of Ion Beam Physics, ETH - Zurich, Otto Stern Weg 5, 8093 Zurich, Switzerland; Institute of Biogeochemistry and Pollutant Dynamics, Environmental Physics, ETH Zurich, Universitätstrasse 16, Zurich 8092, Switzerland
| | | | - Rob Dekker
- NIOZ Royal Netherlands Institute for Sea Research and Utrecht University, PO Box 59, 1790 Ab Den Burg, the Netherlands
| | - Hans-Arno Synal
- Laboratory of Ion Beam Physics, ETH - Zurich, Otto Stern Weg 5, 8093 Zurich, Switzerland
| | - Marcus Christl
- Laboratory of Ion Beam Physics, ETH - Zurich, Otto Stern Weg 5, 8093 Zurich, Switzerland
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7
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Gimenez LH, Doldan MDS, Zaidman PC, Morsan EM. The potential of Glycymeris longior (Mollusca, Bivalvia) as a multi-decadal sclerochronological archive for the Argentine Sea (Southern Hemisphere). Mar Environ Res 2020; 155:104879. [PMID: 32072983 DOI: 10.1016/j.marenvres.2020.104879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 01/17/2020] [Accepted: 01/19/2020] [Indexed: 06/10/2023]
Abstract
In the absence of instrumental records, shell growth increments of bivalves are used to build continuous multi-decadal time series of growth and to estimate environmental variability. While there is interest in such chronologies in the Northern Hemisphere, there is a lack of multi-decadal datasets of growth for marine species from the Southern Hemisphere. We assessed the potential of the clam Glycymeris longior as an environmental proxy archive for the mid-latitudes of the South Atlantic Ocean, by applying sclerochronological techniques on the shells of individuals from a coastal area in Northern Patagonia, Argentina. Growth of G. longior showed a synchronous pattern, and shells were cross dated. We demonstrated that G. longior shells can be used to generate a robust multi-decadal chronology. The chronology spanned for a period of 22 years, from 1990 to 2011. This chronology has the potential to be extended, given that the maximum longevity of the analysed shells was 69 years. Significant positive correlations were found between the chronology and sea surface temperature and the Southern Annular Mode index. The sclerochronological approach performed in this study is a first step toward a long-term understanding of the links between climate and growth patterns of bivalves in temperate regions of SW Atlantic Ocean, under a long-term perspective.
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Affiliation(s)
- Lucas H Gimenez
- Escuela Superior de Ciencias Marinas, Universidad Nacional del Comahue. San Martín 247, 8520, San Antonio Oeste, Río Negro, Argentina; Departamento de Ecología, Universidad Católica de la Santísima Concepción, Concepción, Chile
| | - María Del Socorro Doldan
- Escuela Superior de Ciencias Marinas, Universidad Nacional del Comahue. San Martín 247, 8520, San Antonio Oeste, Río Negro, Argentina; Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni" (CIMAS), Universidad Nacional del Comahue-CONICET, MAGyP Río Negro, Güemes 1030, 8520, San Antonio Oeste, Río Negro, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz, 2290, C1425FQB, Ciudad Autónoma de Buenos Aires, Argentina.
| | - Paula C Zaidman
- Escuela Superior de Ciencias Marinas, Universidad Nacional del Comahue. San Martín 247, 8520, San Antonio Oeste, Río Negro, Argentina; Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni" (CIMAS), Universidad Nacional del Comahue-CONICET, MAGyP Río Negro, Güemes 1030, 8520, San Antonio Oeste, Río Negro, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz, 2290, C1425FQB, Ciudad Autónoma de Buenos Aires, Argentina
| | - Enrique M Morsan
- Escuela Superior de Ciencias Marinas, Universidad Nacional del Comahue. San Martín 247, 8520, San Antonio Oeste, Río Negro, Argentina; Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos "Almirante Storni" (CIMAS), Universidad Nacional del Comahue-CONICET, MAGyP Río Negro, Güemes 1030, 8520, San Antonio Oeste, Río Negro, Argentina
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Trueman CN, Jackson AL, Chadwick KS, Coombs EJ, Feyrer LJ, Magozzi S, Sabin RC, Cooper N. Combining simulation modeling and stable isotope analyses to reconstruct the last known movements of one of Nature's giants. PeerJ 2019; 7:e7912. [PMID: 31637141 PMCID: PMC6802580 DOI: 10.7717/peerj.7912] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 09/17/2019] [Indexed: 11/20/2022] Open
Abstract
The spatial ecology of rare, migratory oceanic animals is difficult to study directly. Where incremental tissues are available, their chemical composition can provide valuable indirect observations of movement and diet. Interpreting the chemical record in incremental tissues can be highly uncertain, however, as multiple mechanisms interact to produce the observed data. Simulation modeling is one approach for considering alternative hypotheses in ecology and can be used to consider the relative likelihood of obtaining an observed record under different combinations of ecological and environmental processes. Here we show how a simulation modeling approach can help to infer movement behaviour based on stable carbon isotope profiles measured in incremental baleen tissues of a blue whale (Balaenoptera musculus). The life history of this particular specimen, which stranded in 1891 in the UK, was selected as a case study due to its cultural significance as part of a permanent display at the Natural History Museum, London. We specifically tested whether measured variations in stable isotope compositions across the analysed baleen plate were more consistent with residency or latitudinal migrations. The measured isotopic record was most closely reproduced with a period of residency in sub-tropical waters for at least a full year followed by three repeated annual migrations between sub-tropical and high latitude regions. The latitudinal migration cycle was interrupted in the year prior to stranding, potentially implying pregnancy and weaning, but isotopic data alone cannot test this hypothesis. Simulation methods can help reveal movement information coded in the biochemical compositions of incremental tissues such as those archived in historic collections, and provides context and inferences that are useful for retrospective studies of animal movement, especially where other sources of individual movement data are sparse or challenging to validate.
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Affiliation(s)
- Clive N Trueman
- School of Ocean and Earth Science, University of Southampton, Southampton, United Kingdom
| | - Andrew L Jackson
- School of Natural Sciences, University of Dublin, Trinity College, Dublin, Ireland
| | - Katharyn S Chadwick
- School of Ocean and Earth Science, University of Southampton, Southampton, United Kingdom
| | - Ellen J Coombs
- Department of Life Sciences, Natural History Museum, London, United Kingdom.,Department of Earth Sciences, University College London, University of London, London, United Kingdom
| | - Laura J Feyrer
- Department of Biology, Dalhousie University, Halifax, NS, Canada
| | - Sarah Magozzi
- School of Ocean and Earth Science, University of Southampton, Southampton, United Kingdom.,Department of Geology and Geophysics, University of Utah, Salt Lake City, UT, United States of America
| | - Richard C Sabin
- Department of Life Sciences, Natural History Museum, London, United Kingdom
| | - Natalie Cooper
- Department of Life Sciences, Natural History Museum, London, United Kingdom
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Loftus E, Lee-Thorp J, Leng M, Marean C, Sealy J. Seasonal scheduling of shellfish collection in the Middle and Later Stone Ages of southern Africa. J Hum Evol 2019; 128:1-16. [PMID: 30825979 DOI: 10.1016/j.jhevol.2018.12.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 12/06/2018] [Accepted: 12/14/2018] [Indexed: 10/27/2022]
Abstract
This study assesses the seasonal scheduling of shellfish harvesting among hunter-gatherer populations along the southernmost coast of South Africa, based on a large number of serial oxygen isotope analyses of marine mollusk shells from four archaeological sites. The south coast of South Africa boasts an exceptional record of coastal hunter-gatherer occupation spanning the Holocene, the last glacial cycle and beyond. The significance of coastal adaptations, in this region in particular, for later modern human evolution has been prominently debated. Shellfishing behaviors are an important focus for investigation given the dietary and scheduling implications and the abundant archaeological shell remains in numerous sites. Key to better understanding coastal foraging is whether it was limited to one particular season, or year-round. Yet, this has proven very difficult to establish by conventional archaeological methods. This study reconstructs seasonal harvesting patterns by calculating water temperatures from the final growth increment of shells. Results from two Later Stone Age sites, Nelson Bay Cave (together with the nearby Hoffman's Robberg Cave) and Byneskranskop 1, show a pronounced cool season signal, which is unexpected given previous ethnographic documentation of summer as the optimal season for shellfishing activities and inferences about hunter-gatherer scheduling and mobility in the late Holocene. Results from two Middle Stone Age sites, Klasies River and Pinnacle Point 5-6, show distinct seasonal patterns that likely reflect the seasonal availability of resources in the two locations. The Pinnacle Point 5-6 assemblage, which spans the MIS5-4 transition, records a marked shift in shellfishing seasonality at c. 71 ka that aligns with other indications of archaeological and environmental change at this time. We conclude that the scheduling and intensity of shellfishing in this region is affected by a suite of factors, including environmental and cultural drivers, rather than a single variable, such as population growth.
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Affiliation(s)
- Emma Loftus
- Research Laboratory for Archaeology and the History of Art, School of Archaeology, University of Oxford, 1-2 South Parks Road, OX1 3TG, UK; Merton College, University of Oxford, Merton Street, OX1 4JD, UK.
| | - Julia Lee-Thorp
- Research Laboratory for Archaeology and the History of Art, School of Archaeology, University of Oxford, 1-2 South Parks Road, OX1 3TG, UK
| | - Melanie Leng
- NERC Isotope Geoscience Laboratory Facilities, British Geological Survey, Keyworth, Nottingham NG12 5GG, UK; Centre for Environmental Geochemistry, School of Geography, University of Nottingham, Nottingham NG7 2RD, UK
| | - Curtis Marean
- Institute of Human Origins, School of Human Evolution and Social Change, Arizona State University, PO Box 874101, Tempe, AZ, 85287-4101, USA; African Centre for Coastal Palaeoscience, Nelson Mandela University, PO Box 77000, Port Elizabeth, 6031, South Africa
| | - Judith Sealy
- Department of Archaeology, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa
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Ballesta-Artero I, Zhao L, Milano S, Mertz-Kraus R, Schöne BR, van der Meer J, Witbaard R. Environmental and biological factors influencing trace elemental and microstructural properties of Arctica islandica shells. Sci Total Environ 2018; 645:913-923. [PMID: 30032087 DOI: 10.1016/j.scitotenv.2018.07.116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 07/08/2018] [Accepted: 07/09/2018] [Indexed: 06/08/2023]
Abstract
Long-term and high-resolution environmental proxy data are crucial to contextualize current climate change. The extremely long-lived bivalve, Arctica islandica, is one of the most widely used paleoclimate archives of the northern Atlantic because of its fine temporal resolution. However, the interpretation of environmental histories from microstructures and elemental impurities of A. islandica shells is still a challenge. Vital effects (metabolic rate, ontogenetic age, and growth rate) can modify the way in which physiochemical changes of the ambient environment are recorded by the shells. To quantify the degree to which microstructural properties and element incorporation into A. islandica shells is vitally or/and environmentally affected, A. islandica specimens were reared for three months under different water temperatures (3, 8 and 13 °C) and food concentrations (low, medium and high). Concentrations of Mg, Sr, Na, and Ba were measured in the newly formed shell portions by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS). The microstructures of the shells were analyzed by Scanning Electron Microscopy (SEM). Shell growth and condition index of each specimen were calculated at the end of the experimental period. Findings indicate that no significant variation in the morphometric characteristics of the microstructures were formed at different water temperatures or different food concentrations. Shell carbonate that formed at lowest food concentration usually incorporated the highest amounts of Mg, Sr and Ba relative to Ca+2 (except for Na) and was consistent with the slowest shell growth and lowest condition index at the end of the experiment. These results seem to indicate that, under food limitation, the ability of A. islandica to discriminate element impurities during shell formation decreases. Moreover, all trace element-to‑calcium ratios were significantly affected by shell growth rate. Therefore, physiological processes seem to dominate the control on element incorporation into A. islandica shells.
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Affiliation(s)
- Irene Ballesta-Artero
- NIOZ, Netherlands Institute for Sea Research and Utrecht University, Department of Coastal Systems, PO Box 59, 1790 AB, Den Burg, Texel, the Netherlands; NIOZ, Netherlands Institute for Sea Research and Utrecht University, Department of Estuarine and Delta Systems, PO Box 140, 4400 AC Yerseke, the Netherlands; Department of Animal Ecology, VU University Amsterdam, the Netherlands.
| | - Liqiang Zhao
- Institute of Geosciences, University of Mainz, Joh.-J.-Becher-Weg 21, 55128 Mainz, Germany
| | - Stefania Milano
- Institute of Geosciences, University of Mainz, Joh.-J.-Becher-Weg 21, 55128 Mainz, Germany
| | - Regina Mertz-Kraus
- Institute of Geosciences, University of Mainz, Joh.-J.-Becher-Weg 21, 55128 Mainz, Germany
| | - Bernd R Schöne
- Institute of Geosciences, University of Mainz, Joh.-J.-Becher-Weg 21, 55128 Mainz, Germany
| | - Jaap van der Meer
- NIOZ, Netherlands Institute for Sea Research and Utrecht University, Department of Coastal Systems, PO Box 59, 1790 AB, Den Burg, Texel, the Netherlands; Department of Animal Ecology, VU University Amsterdam, the Netherlands
| | - Rob Witbaard
- NIOZ, Netherlands Institute for Sea Research and Utrecht University, Department of Estuarine and Delta Systems, PO Box 140, 4400 AC Yerseke, the Netherlands
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11
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Becker C, Dick JTA, Cunningham EM, Schmitt C, Sigwart JD. The crustacean cuticle does not record chronological age: New evidence from the gastric mill ossicles. Arthropod Struct Dev 2018; 47:498-512. [PMID: 30086392 DOI: 10.1016/j.asd.2018.07.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 07/18/2018] [Accepted: 07/20/2018] [Indexed: 06/08/2023]
Abstract
A proposed method to determine chronological age of crustaceans uses putative annual bands in the gastric mill ossicles of the foregut. The interpretation of cuticle bands as growth rings is based on the idea that ossicles are retained through the moult and could accumulate a continuous record of age. However, recent studies presented conflicting findings on the dynamics of gastric mill ossicles during ecdysis. We herein study cuticle bands in ossicles in four species of commercially important decapod crustaceans (Homarus gammarus, Nephrops norvegicus, Cancer pagurus and Necora puber) in different phases of the moult cycle using dissections, light microscopy, micro-computed tomography and cryo-scanning electron microscopy. Our results demonstrate that the gastric mill is moulted and ossicles are not retained but replaced during ecdysis. It is therefore not plausible to conclude that ossicles register a lifetime growth record as annual bands and thereby provide age information. Other mechanisms for the formation of cuticle bands and their correlation to size-based age estimates need to be considered and the effect of moulting on other cuticle structures where 'annual growth bands' have been reported should be investigated urgently. Based on our results, there is no evidence for a causative link between cuticle bands and chronological age, meaning it is unreliable for determining crustacean age.
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Affiliation(s)
- Carola Becker
- Queen's University Marine Laboratory, 12-13 The Strand, Portaferry, BT22 1PF, Northern Ireland, UK; Humboldt-Universität zu Berlin, Department of Biology, Comparative Zoology, Philippstr. 13, Haus 2, 10115 Berlin, Germany.
| | - Jaimie T A Dick
- Queen's University Marine Laboratory, 12-13 The Strand, Portaferry, BT22 1PF, Northern Ireland, UK; Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, MBC, 97 Lisburn Road, Belfast, BT9 7BL, Northern Ireland, UK.
| | - Eoghan Mánus Cunningham
- Queen's University Marine Laboratory, 12-13 The Strand, Portaferry, BT22 1PF, Northern Ireland, UK.
| | - Clemens Schmitt
- Max Planck Institute of Colloids and Interfaces, Potsdam-Golm Science Park, Am Mühlenberg 1 OT Golm, 14476 Potsdam, Germany.
| | - Julia D Sigwart
- Queen's University Marine Laboratory, 12-13 The Strand, Portaferry, BT22 1PF, Northern Ireland, UK.
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12
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Quaeck-Davies K, Bendall VA, MacKenzie KM, Hetherington S, Newton J, Trueman CN. Teleost and elasmobranch eye lenses as a target for life-history stable isotope analyses. PeerJ 2018; 6:e4883. [PMID: 29888128 PMCID: PMC5991300 DOI: 10.7717/peerj.4883] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 05/11/2018] [Indexed: 11/20/2022] Open
Abstract
Incrementally grown, metabolically inert tissues such as fish otoliths provide biochemical records that can used to infer behavior and physiology throughout the lifetime of the individual. Organic tissues are particularly useful as the stable isotope composition of the organic component can provide information about diet, trophic level and location. Unfortunately, inert, incrementally grown organic tissues are relatively uncommon. The vertebrate eye lens, however, is formed via sequential deposition of protein-filled fiber cells, which are subsequently metabolically inert. Lenses therefore have the potential to serve as biochemical data recorders capturing life-long variations in dietary and spatial ecology. Here we review the state of knowledge regarding the structure and formation of fish eye lenses in the context of using lens tissue for retrospective isotopic analysis. We discuss the relationship between eye lens diameter and body size, describe the successful recovery of expected isotopic gradients throughout ontogeny and between species, and quantify the isotopic offset between lens protein and white muscle tissue. We show that fish eye lens protein is an attractive host for recovery of stable isotope life histories, particularly for juvenile life stages, and especially in elasmobranchs lacking otoliths, but interpretation of lens-based records is complicated by species-specific uncertainties associated with lens growth rates.
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Affiliation(s)
- Katie Quaeck-Davies
- Ocean and Earth Science, University of Southampton, Southampton, United Kingdom
| | - Victoria A Bendall
- Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, United Kingdom
| | | | - Stuart Hetherington
- Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, United Kingdom
| | - Jason Newton
- Scottish Universities Environmental Research Centre, University of Glasgow, Glasgow, United Kingdom
| | - Clive N Trueman
- Ocean and Earth Science, University of Southampton, Southampton, United Kingdom
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13
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Wilson WA, Fritts AK, Fritts MW, Unrine JM, Tweedy BN, Casper AF. Freshwater mussel shells (Unionidae) describe anthropogenic changes to trace element cycling within a North American river. Sci Total Environ 2018; 616-617:1066-1076. [PMID: 29089124 DOI: 10.1016/j.scitotenv.2017.10.212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 10/18/2017] [Accepted: 10/20/2017] [Indexed: 06/07/2023]
Abstract
Bivalve shells provide an unparalleled opportunity for understanding the history of bioavailable trace elements in aquatic systems. The present study analyzed the elements Al, As, Cd, Co, Cr, Cu, Fe, Hg, Mn, Ni, Pb, Se, U, V and Zn in freshwater mussel shells collected from a large floodplain river. Shells were collected fresh, sampled from a historic archive, and retrieved from pre-Columbian archeological sites. The elements As, Co, Cu and Ni varied with time over the course of the 20th century. When compared to the pre-Columbian shells, 20th century shell concentrations for these elements were either consistently higher (Co, Cu and Ni) or lower (As). The 20th century shells also had consistently lower concentrations of Mn and Zn when compared to the pre-Columbian period, however diagenesis is the most likely cause of this difference in Mn. The elements Cd and Fe had little spatial or temporal variation in this data set. Several elements (Al, Cr, Hg, Pb, Se, U, and V) were below method detection limits in most shells. This study demonstrated that mussel shells can be used as archives of environmental history in river systems.
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Affiliation(s)
- W Aaron Wilson
- Department of Biological, Chemical and Physical Sciences, Roosevelt University, 430 S Michigan Ave, Chicago, IL 60605, USA.
| | - Andrea K Fritts
- Illinois Natural History Survey, Illinois River Biological Station, Havana, IL 62644, USA.
| | - Mark W Fritts
- Illinois Natural History Survey, Illinois River Biological Station, Havana, IL 62644, USA.
| | - Jason M Unrine
- Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY 40546, USA.
| | - Beth N Tweedy
- Department of Biological Sciences, University of Oklahoma, 730 Van Vleet Oval, Room 314, Norman, OK 73019, USA.
| | - Andrew F Casper
- Illinois Natural History Survey, Illinois River Biological Station, Havana, IL 62644, USA.
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14
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Purroy A, Milano S, Schöne BR, Thébault J, Peharda M. Drivers of shell growth of the bivalve, Callista chione (L. 1758) - Combined environmental and biological factors. Mar Environ Res 2018; 134:138-149. [PMID: 29395260 DOI: 10.1016/j.marenvres.2018.01.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 01/15/2018] [Accepted: 01/16/2018] [Indexed: 06/07/2023]
Abstract
Seasonal shell growth patterns were analyzed using the stable oxygen and carbon isotope values of live-collected specimens of the bivalve Callista chione from two sites in the Adriatic Sea (Pag and Cetina, Croatia). Micromilling was performed on the shell surface of three shells per site and shell oxygen isotopes of the powder samples were measured. The timing and rate of seasonal shell growth was determined by aligning the δ18Oshell-derived temperatures so that the best fit was achieved with the instrumental temperature curve. According to the data, shells grew only at very low rates or not at all during the winter months, i.e., between January and March. Shell growth slowdown/shutdown temperatures varied among sites, i.e., 13.6 °C at Pag and 16.6 °C at Cetina, indicating that temperature was not the only driver of shell growth. Likely, seasonal differences in seawater temperature and food supply were the major component explaining contrasting growth rates of C. chione at two study sites. Decreasing shell growth rates were also associated with the onset of gametogenesis suggesting a major energy reallocation toward reproduction rather than growth. These results highlight the need to combine sclerochronological analyses with ecological studies to understand life history traits of bivalves as archives of environmental variables.
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Affiliation(s)
- Ariadna Purroy
- Institute of Oceanography and Fisheries, Šetalište Ivana Meštrovića 63, 21000 Split, Croatia.
| | - Stefania Milano
- Institute of Geosciences, University of Mainz, 55128 Mainz, Germany
| | - Bernd R Schöne
- Institute of Geosciences, University of Mainz, 55128 Mainz, Germany
| | - Julien Thébault
- Laboratoire des Sciences de l'environnement Marin (LEMAR UMR6539 UBO/CNRS/IRD), Institut Universitaire Européen de la Mer, Université de Brest, Rue Dumont d'Urville, 29280 Plouzané, France
| | - Melita Peharda
- Institute of Oceanography and Fisheries, Šetalište Ivana Meštrovića 63, 21000 Split, Croatia
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15
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Ballesta-Artero I, Janssen R, van der Meer J, Witbaard R. Interactive effects of temperature and food availability on the growth of Arctica islandica (Bivalvia) juveniles. Mar Environ Res 2018; 133:67-77. [PMID: 29233602 DOI: 10.1016/j.marenvres.2017.12.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 11/30/2017] [Accepted: 12/02/2017] [Indexed: 06/07/2023]
Abstract
The interest in Arctica islandica growth biology has recently increased due to the widespread use of its shell as a bioarchive. Although temperature and food availability are considered key factors in its growth, their combined influence has not been studied so far under laboratory conditions. We tested the interactive effect of temperature and food availability on the shell and tissue growth of A. islandica juveniles (9-15 mm in height) in a multi-factorial experiment with four food levels (no food, low, medium, and high) and three different temperatures (3, 8, 13 °C). Shell and tissue growth were observed in all treatments, with significant differences occurring only among food levels (2-way ANOVA; P-value < 0.05). Siphon activity (% open siphons), however, was affected by temperature, food, and the interaction between them (2-way ANOVA; P-value < 0.05). Siphon observations, as indication of feeding activities, played a key role to better understand the growth variation between individuals.
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Affiliation(s)
- Irene Ballesta-Artero
- NIOZ, Netherlands Institute for Sea Research and Utrecht University, Department of Coastal Systems, PO Box 59, 1790 AB Den Burg, Texel, The Netherlands; NIOZ, Netherlands Institute for Sea Research and Utrecht University, Department of Estuarine and Delta Systems, PO Box 140, 4400 AC Yerseke, The Netherlands; Department of Animal Ecology, VU University, Amsterdam, The Netherlands.
| | - Reneé Janssen
- Helicon MBO Den Bosch, Postbus 2279, 5202 CG 's-Hertogenbosch, The Netherlands
| | - Jaap van der Meer
- NIOZ, Netherlands Institute for Sea Research and Utrecht University, Department of Coastal Systems, PO Box 59, 1790 AB Den Burg, Texel, The Netherlands; Department of Animal Ecology, VU University, Amsterdam, The Netherlands
| | - Rob Witbaard
- NIOZ, Netherlands Institute for Sea Research and Utrecht University, Department of Estuarine and Delta Systems, PO Box 140, 4400 AC Yerseke, The Netherlands
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16
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Shirai K, Kubota K, Murakami-Sugihara N, Seike K, Hakozaki M, Tanabe K. Stimpson's hard clam Mercenaria stimpsoni; A multi-decadal climate recorder for the northwest Pacific coast. Mar Environ Res 2018; 133:49-56. [PMID: 29229185 DOI: 10.1016/j.marenvres.2017.10.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 10/17/2017] [Accepted: 10/19/2017] [Indexed: 06/07/2023]
Abstract
A sclerochronological and radiocarbon-based study of life history traits of Stimpson's hard clam (Mercenaria stimpsoni), collected alive from Funakoshi Bay, northeast Japan, showed the lifespan of the species to be at least 92 years (determined from annual growth line counts). Three M. stimpsoni specimens exhibited the following synchronous growth pattern, suggestive of environmental control; annual increment width increasing after 1955 to a maximum value between 1970 and 1980, subsequently decreasing gradually until 2000, and thereafter remaining constant or increasing slightly. Variations on annual growth patterns, as well as standardized growth indices chronology, were relatively closely linked to the Atlantic Multidecadal Oscillation (AMO), but less so to Pacific Decadal Oscillation (PDO). Carbonate samples collected from ontogenetically younger shell portions, estimated from growth line counts to have been deposited before 1950, contained no nuclear bomb-test radiocarbon, thereby supporting the accuracy of annual growth line counts (versus overcounting from ventral margin). Together with the synchronous annual increment width patterns, this indicated that age and annual growth rate estimations for M. stimpsoni based on growth line counts were reliable and applicable to high-resolution sclerochronological analyses, which should contribute to a deeper understanding of multi-decadal northwest Pacific climate variability.
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Affiliation(s)
- Kotaro Shirai
- Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa, Chiba 277-8564, Japan.
| | - Kaoru Kubota
- Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa, Chiba 277-8564, Japan; Institute for Space-Earth Environmental Research, Nagoya University, Furo-cho, Nagoya, Aichi 464-8601, Japan
| | - Naoko Murakami-Sugihara
- Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa, Chiba 277-8564, Japan
| | - Koji Seike
- Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa, Chiba 277-8564, Japan
| | - Masataka Hakozaki
- National Museum of Japanese History, Inter-University Research Institute Corporation, National Institutes for the Humanities, 117 Jonai-cho, Sakura, Chiba 285-8502, Japan
| | - Kazushige Tanabe
- Department of Earth and Planetary Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8654, Japan
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17
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Bertucci A, Pierron F, Thébault J, Klopp C, Bellec J, Gonzalez P, Baudrimont M. Transcriptomic responses of the endangered freshwater mussel Margaritifera margaritifera to trace metal contamination in the Dronne River, France. Environ Sci Pollut Res Int 2017; 24:27145-27159. [PMID: 28963680 DOI: 10.1007/s11356-017-0294-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 09/20/2017] [Indexed: 06/07/2023]
Abstract
The freshwater pearl mussel Margaritifera margaritifera is one of the most threatened freshwater bivalves worldwide. In this study, we aimed (i) to study the processes by which water quality might affect freshwater mussels in situ and (ii) to provide insights into the ecotoxicological significance of water pollution to natural populations in order to provide necessary information to enhance conservation strategies. M. margaritifera specimens were sampled in two close sites located upstream or downstream from an illegal dumping site. The renal transcriptome of these animals was assembled and gene transcription determined by RNA-seq. Correlations between transcription levels of each single transcript and the bioaccumulation of nine trace metals, age (estimated by sclerochronology), and condition index were determined in order to identify genes likely to respond to a specific factor. Amongst the studied metals, Cr, Zn, Cd, and Ni were the main factors correlated with transcription levels, with effects on translation, apoptosis, immune response, response to stimulus, and transport pathways. However, the main factor explaining changes in gene transcription appeared to be the age of individuals with a negative correlation with the transcription of retrotransposon-related genes. To investigate this effect further, mussels were classified into three age classes. In young, middle-aged and old animals, transcription levels were mainly explained by Cu, Zn and age, respectively. This suggests differences in the molecular responses of this species to metals during its lifetime that must be better assessed in future ecotoxicology studies.
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Affiliation(s)
| | - Fabien Pierron
- Univ. Bordeaux, UMR EPOC CNRS 5805, 33615, Pessac, France
| | - Julien Thébault
- Université de Brest, Institut Universitaire Européen de la Mer, Laboratoire des sciences de l'environnement marin (LEMAR UMR 6539 CNRS/UBO/IRD/Ifremer), 29280, Plouzané, France
| | - Christophe Klopp
- Plate-forme bio-informatique Genotoul, Mathématiques et Informatique Appliquées de Toulouse, INRA, 31326, Castanet-Tolosan, France
| | - Julie Bellec
- Université de Brest, Institut Universitaire Européen de la Mer, Laboratoire des sciences de l'environnement marin (LEMAR UMR 6539 CNRS/UBO/IRD/Ifremer), 29280, Plouzané, France
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18
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Tortolero-Langarica JJA, Carricart-Ganivet JP, Cupul-Magaña AL, Rodríguez-Troncoso AP. Historical insights on growth rates of the reef-building corals Pavona gigantea and Porites panamensis from the Northeastern tropical Pacific. Mar Environ Res 2017; 132:23-32. [PMID: 29054344 DOI: 10.1016/j.marenvres.2017.10.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 10/03/2017] [Accepted: 10/04/2017] [Indexed: 06/07/2023]
Abstract
Historical coral growth assessed by sclerochronology records provides an environmental retrospective and future perspective on the maintenance of coral-reef ecosystems. Three growth parameters, extension rate, skeletal density, and calcification rate were evaluated over the past two decade's interval (1988-2013) in different gender of two massive corals Pavona gigantea and Porites panamensis. The species P. gigantea calcified two-times faster (0.84 ± 0.29 g cm-2 yr-1) than P. panamensis (0.36 ± 0.15 g cm-2 yr-1); and male colonies presents13-58% higher calcification rates than females. Annual growth parameters do not show significant trends over the period 1988-2013, but significant, growth disruption associated with ENSO events. The data presented here suggest that P.gigantea and P.panamensis from the area have developed phenotypic plasticity to a wide range of environmental condition; the life history of both species is reflected in their calcification rates during both optimal and non-optimal conditions over the last two decades. Massive species develop denser structures that provide a permanent habitat to many marine species and contributes to the long-term maintenance of coral reef communities in the eastern tropical Pacific.
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Affiliation(s)
- J J A Tortolero-Langarica
- Laboratorio de Zoología Marina, Instituto Tecnológico de Bahía de Banderas, Tecnológico Nacional de México, Crucero a Punta de Mita S/N, Bahía de Banderas, C.P. 63734 Nayarit, Mexico
| | - J P Carricart-Ganivet
- Unidad Académica de Sistemas Arrecifales, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Prol. Av. Niños Héroes S/N Domicilio conocido Puerto Morelos, Q. Roo 77580, Mexico; Unidad Académica de Sistemas Arrecifales, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, 77500 Cancún, Q. Roo, Mexico
| | - A L Cupul-Magaña
- Laboratorio de Ecología Marina, Centro de Investigaciones Costeras, Centro Universitario de la Costa, Universidad de Guadalajara, Av. Universidad No. 203, Puerto Vallarta, CP 48280, Jalisco, Mexico
| | - A P Rodríguez-Troncoso
- Laboratorio de Ecología Marina, Centro de Investigaciones Costeras, Centro Universitario de la Costa, Universidad de Guadalajara, Av. Universidad No. 203, Puerto Vallarta, CP 48280, Jalisco, Mexico.
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19
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Fritts AK, Fritts MW, Haag WR, DeBoer JA, Casper AF. Freshwater mussel shells (Unionidae) chronicle changes in a North American river over the past 1000years. Sci Total Environ 2017; 575:199-206. [PMID: 27741455 DOI: 10.1016/j.scitotenv.2016.09.225] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 09/23/2016] [Accepted: 09/29/2016] [Indexed: 06/06/2023]
Abstract
The Illinois River was substantially altered during the 20th century with the installation of navigational locks and dams, construction of extensive levee networks, and degradation of water quality. Freshwater mussels were affected by these changes. We used sclerochronology and stable isotopes to evaluate changes over time in age-and-growth and food sources for two mussel species: Amblema plicata and Quadrula quadrula. Specimens were collected in years 1894, 1897, 1909, 1912, 1966, and 2013, and archeological specimens were collected circa 850. The von Bertalanffy growth parameter (K) was similar between 850 and 1897, but it increased by 1912 and remained elevated through 2013. Predicted maximum size (Linf) increased over the past millennium, and 2013 individuals were over 50% larger than in 850. Growth indices showed similar patterns of continual increases in growth. Shells were enriched in 13C and 15N during the 20th century, but exhibited a partial return to historical conditions by 2013. These patterns are likely attributable to impoundment, nutrient pollution and eutrophication beginning in the early 20th century followed by recent water quality improvement.
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Affiliation(s)
- Andrea K Fritts
- Illinois Natural History Survey, Illinois River Biological Station, Havana, IL 62644, USA.
| | - Mark W Fritts
- Illinois Natural History Survey, Illinois River Biological Station, Havana, IL 62644, USA.
| | - Wendell R Haag
- Center for Bottomland Hardwoods Research, US Forest Service, Oxford, MS 38655, USA.
| | - Jason A DeBoer
- Illinois Natural History Survey, Illinois River Biological Station, Havana, IL 62644, USA.
| | - Andrew F Casper
- Illinois Natural History Survey, Illinois River Biological Station, Havana, IL 62644, USA.
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20
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Peharda M, Calcinai B, Puljas S, Golubić S, Arapov J, Thébault J. Endoliths in Lithophaga lithophaga shells--Variation in intensity of infestation and species occurrence. Mar Environ Res 2015; 108:91-99. [PMID: 25982321 DOI: 10.1016/j.marenvres.2015.05.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Revised: 05/04/2015] [Accepted: 05/09/2015] [Indexed: 06/04/2023]
Abstract
Pronounced differences with respect to the extent of infestation and the degree of Lithophaga lithophaga shell damage inflicted by euendolithic taxa at two sites in the Adriatic Sea representing different productivity conditions, are described. Shells collected from the eastern part of Kaštela Bay, which is characterized by higher primary productivity, have significantly more shell damage then the shell collected from a site on the outer coast of the island of Čiovo exposed to the oligotrophic Adriatic Sea. The presence of endoliths and their perforations were detected in different layers of the shell, including solidly mineralized parts of the skeleton and within the organic lamellae incorporated into the shell. Phototrophic endoliths were not observed in the specimens. The most serious damage to L. lithophaga shells was the boring clionaid sponge Pione vastifica, which was more common in shells collected from Kaštela.
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Affiliation(s)
- Melita Peharda
- Institute of Oceanography and Fisheries, Šetalište Ivama Meštrovića 63, 21000 Split, Croatia.
| | - Barbara Calcinai
- Polytechnic University of Marche, Department of Life and Environmental Sciences, Via Brecce Bianche, 60131 Ancona, Italy
| | - Sanja Puljas
- Faculty of Science, University of Split, Teslina 12, Split, Croatia
| | - Stjepko Golubić
- Boston University, Biological Science Center, 5 Cummington Street, Boston, MA 02215-2406, USA
| | - Jasna Arapov
- Institute of Oceanography and Fisheries, Šetalište Ivama Meštrovića 63, 21000 Split, Croatia
| | - Julien Thébault
- Université de Brest, Institut Universitaire Européen de la Mer, Laboratoire des Sciences de l'Environnement Marin (LEMAR UMR6539 UBO/CNRS/IRD), rue Dumont d'Urville, 29280 Plouzané, France
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21
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Füllenbach CS, Schöne BR, Branscheid R. Microstructures in shells of the freshwater gastropod Viviparus viviparus: a potential sensor for temperature change? Acta Biomater 2014; 10:3911-21. [PMID: 24704696 DOI: 10.1016/j.actbio.2014.03.030] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 02/21/2014] [Accepted: 03/26/2014] [Indexed: 10/25/2022]
Abstract
Mollusk shells contain a plethora of information on past climate variability. However, only a limited toolkit is currently available to reconstruct such data from the shells. The environmental data of some proxies (e.g. Sr/Ca ratios) is obscured by physiological effects, whereas other proxies, such as δ(18)O, simultaneously provide information on two or more different environmental variables. The present study investigates whether microstructures of the freshwater gastropod Viviparus viviparus provide an alternative means to reconstruct past water temperature. Cold and highly variable temperature regimes resulted in the precipitation of highly unordered first-order lamellae of simple crossed-lamellar (XLM) structures if new shell formed from scratch. However, during stable and warm conditions, well-ordered first-order lamellae were laid down irrespective of pre-existing shell material. Homogeneous first-order lamellae also formed during times of cold and highly variable temperatures if the new shell was deposited onto existing shell material with well-ordered first-order lamellae. The growth front seems to contain instructions for building specific microstructure variants, irrespective of environmental conditions. However, if this template is missing, the animal forms a deviating microstructure. Under extremely stressful situations (e.g. removal from habitat, calcein staining, extreme temperature shifts), the gastropod precipitates an evolutionarily older microstructure (irregular simple prisms) rather than XLM structures. These shell portions were macroscopically described as disturbance lines. In addition, repetitive, presumably periodic growth patterns were observed, which consisted of gradually changing third-order lamellae between consecutive faint, organic-rich growth lines. These growth patterns were probably controlled by intrinsic biological clocks and exhibited a two-daily periodicity. The results of this study may provide the basis for using changes in the microstructure of shell sections as a new sensor (environmental proxy) for past water temperature.
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Dexter TA, Kowalewski M. Jackknife-corrected parametric bootstrap estimates of growth rates in bivalve mollusks using nearest living relatives. Theor Popul Biol 2013; 90:36-48. [PMID: 24071629 DOI: 10.1016/j.tpb.2013.09.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Revised: 07/30/2013] [Accepted: 09/15/2013] [Indexed: 11/22/2022]
Abstract
Quantitative estimates of growth rates can augment ecological and paleontological applications of body-size data. However, in contrast to body-size estimates, assessing growth rates is often time-consuming, expensive, or unattainable. Here we use an indirect approach, a jackknife-corrected parametric bootstrap, for efficient approximation of growth rates using nearest living relatives with known age-size relationships. The estimate is developed by (1) collecting a sample of published growth rates of closely related species, (2) calculating the average growth curve using those published age-size relationships, (3) resampling iteratively these empirically known growth curves to estimate the standard errors and confidence bands around the average growth curve, and (4) applying the resulting estimate of uncertainty to bracket age-size relationships of the species of interest. This approach was applied to three monophyletic families (Donacidae, Mactridae, and Semelidae) of mollusk bivalves, a group characterized by indeterministic shell growth, but widely used in ecological, paleontological, and geochemical research. The resulting indirect estimates were tested against two previously published geochemical studies and, in both cases, yielded highly congruent age estimates. In addition, a case study in applied fisheries was used to illustrate the potential of the proposed approach for augmenting aquaculture management practices. The resulting estimates of growth rates place body size data in a constrained temporal context and confidence intervals associated with resampling estimates allow for assessing the statistical uncertainty around derived temporal ranges. The indirect approach should allow for improved evaluation of diverse research questions, from sustainability of industrial shellfish harvesting to climatic interpretations of stable isotope proxies extracted from fossil skeletons.
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