1
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Xu Y, Luo X, Masanja F, Deng Y, Zhao L. Transcriptomic insights into cessation of clam embryonic development following transgenerational exposure to ocean acidity extreme. MARINE ENVIRONMENTAL RESEARCH 2024; 198:106561. [PMID: 38788476 DOI: 10.1016/j.marenvres.2024.106561] [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: 04/03/2024] [Revised: 05/06/2024] [Accepted: 05/20/2024] [Indexed: 05/26/2024]
Abstract
Ocean acidity extremes (OAX) events are becoming more frequent and intense in coastal areas in the context of climate change, generating widespread consequences on marine calcifying organisms and ecosystems they support. While transgenerational exposure to end-of-century scenario of ocean acidification (i.e., at pH 7.7) can confer calcifiers resilience, whether and to what extent such resilience holds true under OAX conditions is still poorly understood. Here, we found that transgenerational exposure of Ruditapes philippinarum to OAX resulted in cessation of embryonic development at the trochophore stage, implying devastating consequences of OAX on marine bivalves. We identified a large number of differentially expressed genes in embryos following transgenerationally exposed to OAX, which were mainly significantly enriched in KEGG pathways related to energy metabolism, immunity and apoptosis. These pathways were significantly activated, and genes involved in these processes were up-regulated, indicating strong cellular stress responses to OAX. These findings demonstrate that transgenerational exposure to OAX can result in embryonic developmental cessation by severe cellular damages, implying that transgenerational acclimation maybe not a panacea for marine bivalves to cope with OAX, and hence urgent efforts are required to understand consequences of intensifying OAX events in coastal ecosystems.
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Affiliation(s)
- Yang Xu
- Fisheries College, Guangdong Ocean University, Zhanjiang, China
| | - Xin Luo
- Fisheries College, Guangdong Ocean University, Zhanjiang, China
| | | | - Yuewen Deng
- Fisheries College, Guangdong Ocean University, Zhanjiang, China
| | - Liqiang Zhao
- Fisheries College, Guangdong Ocean University, Zhanjiang, China; Guangdong Science and Technology Innovation Center of Marine Invertebrate, Guangdong Ocean University, Zhanjiang, China; Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Guangdong Ocean University, Zhanjiang, China.
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2
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Luo X, Zhang X, Xu Y, Masanja F, Yang K, Liu Y, Zhao L. Behavioral responses of intertidal clams to compound extreme weather and climate events. MARINE POLLUTION BULLETIN 2024; 200:116112. [PMID: 38320442 DOI: 10.1016/j.marpolbul.2024.116112] [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: 10/22/2023] [Revised: 01/30/2024] [Accepted: 01/31/2024] [Indexed: 02/08/2024]
Abstract
Rapidly increasing concentration of carbon dioxide (CO2) in the atmosphere not only results in global warming, but also drives increasing seawater acidification. Infaunal bivalves play critical roles in benthic-pelagic coupling, but little is known about their behavioral responses to compound climate events. Here, we tested how heatwaves and acidification affected the behavior of Manila clams (Ruditapes philippinarum). Under acidified conditions, the clams remained capable of burrowing into sediments. Yet, when heatwaves attacked, significant decreases in burrowing ability occurred. Following two consecutive events of heatwaves, the clams exhibited rapid behavioral acclimation. The present study showed that the behavior of R. philippinarum is more sensitive to heatwaves than acidification. Given that the behavior can act as an early and sensitive indicator of the fitness of intertidal bivalves, whether, and to what extent, behavioral acclimation can persist under scenarios of intensifying heatwaves in the context of ocean acidification deserve further investigations.
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Affiliation(s)
- Xin Luo
- Fisheries College, Guangdong Ocean University, Zhanjiang, China
| | - Xingzhi Zhang
- Guangxi Key Laboratory of Aquatic Genetic Breeding and Healthy Aquaculture, Guangxi Academy of Fisheries Sciences, Nanning, China
| | - Yang Xu
- Fisheries College, Guangdong Ocean University, Zhanjiang, China
| | | | - Ke Yang
- Fisheries College, Guangdong Ocean University, Zhanjiang, China
| | - Yong Liu
- Pearl Research Institute, Guangdong Ocean University, Zhanjiang, China
| | - Liqiang Zhao
- Fisheries College, Guangdong Ocean University, Zhanjiang, China; Guangdong Science and Technology Innovation Center of Marine Invertebrate, Guangdong Ocean University, Zhanjiang, China; Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Guangdong Ocean University, Zhanjiang, China.
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3
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Jiang W, Fang J, Rastrick SPS, Samuelsen OB, Liang B, Mao Y, Strand Ø, Fang J, Jiang Z. CO 2-Induced Ocean Acidification Alters the Burrowing Behavior of Manila Clam Ruditapes philippinarum by Reversing GABA A Receptor Function. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023. [PMID: 37276348 DOI: 10.1021/acs.est.3c00707] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Biological burrowing behavior is an important driver shaping ecosystems that is being threatened by CO2-induced ocean acidification; however, the effects of ocean acidification on burrowing behavior and its neurological mechanism remain unclear. This study showed that elevated pCO2 significantly affected the burrowing behaviors of the Manila clam Ruditapes philippinarum, such as increased foot contraction, burrowing time, and intrabottom movement and decreased burrowing depth. Delving deeper into the mechanism, exposure to elevated pCO2 significantly decreased extracellular pH and increased [HCO3-]. Moreover, an indicator GABAA receptor, a neuroinhibitor for movement, was found to be closely associated with behavioral changes. In situ hybridization confirmed that the GABAA receptor was widely distributed in ganglia and foot muscles, and elevated pCO2 significantly increased the mRNA level and GABA concentration. However, the increase in GABAA receptor and its ligand did not suppress the foot movement, but rather sent "excitatory" signals for foot contraction. The destabilization of acid-base homeostasis was demonstrated to induce an increase in the reversal potential for GABAA receptor and an alteration in GABAA receptor function under elevated pCO2. This study revealed that elevated pCO2 affects the burrowing behavior of Manila clams by altering GABAA receptor function from inhibitory to excitatory.
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Affiliation(s)
- Weiwei Jiang
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
| | - Jinghui Fang
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao Pilot National Laboratory for Marine Science and Technology, Qingdao 266200, China
| | | | - Ole B Samuelsen
- Institute of Marine Research, Nordnes, Bergen NO-5817 1870, Norway
| | - Bo Liang
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
| | - Yuze Mao
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao Pilot National Laboratory for Marine Science and Technology, Qingdao 266200, China
| | - Øivind Strand
- Institute of Marine Research, Nordnes, Bergen NO-5817 1870, Norway
| | - Jianguang Fang
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao Pilot National Laboratory for Marine Science and Technology, Qingdao 266200, China
| | - Zengjie Jiang
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao Pilot National Laboratory for Marine Science and Technology, Qingdao 266200, China
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4
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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. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 873:162293. [PMID: 36813205 DOI: 10.1016/j.scitotenv.2023.162293] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [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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Isotope systematics of subfossil, historical, and modern Nautilus macromphalus from New Caledonia. PLoS One 2022; 17:e0277666. [PMID: 36576896 PMCID: PMC9797077 DOI: 10.1371/journal.pone.0277666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 11/01/2022] [Indexed: 12/29/2022] Open
Abstract
Cephalopod carbonate geochemistry underpins studies ranging from Phanerozoic, global-scale change to outcrop-scale paleoecological reconstructions. Interpreting these data hinges on assumed similarity to model organisms, such as Nautilus, and generalization from other molluscan biomineralization processes. Aquarium rearing and capture of wild Nautilus suggest shell carbonate precipitates quickly (35 μm/day) in oxygen isotope equilibrium with seawater. Other components of Nautilus shell chemistry are less well-studied but have potential to serve as proxies for paleobiology and paleoceanography. To calibrate the geochemical response of cephalopod δ15Norg, δ13Corg, δ13Ccarb, δ18Ocarb, and δ44/40Cacarb to modern anthropogenic environmental change, we analyzed modern, historical, and subfossil Nautilus macromphalus from New Caledonia. Samples span initial human habitation, colonialization, and industrial pCO2 increase. This sampling strategy is advantageous because it avoids the shock response that can affect geochemical change in aquarium experiments. Given the range of living depths and more complex ecology of Nautilus, however, some anthropogenic signals, such as ocean acidification, may not have propagated to their living depths. Our data suggest some environmental changes are more easily preserved than others given variability in cephalopod average living depth. Calculation of the percent respired carbon incorporated into the shell using δ13Corg, δ13Ccarb, and Suess-effect corrected δ13CDIC suggests an increase in the last 130 years that may have been caused by increasing carbon dioxide concentration or decreasing oxygen concentration at the depths these individuals inhabited. This pattern is consistent with increasing atmospheric CO2 and/or eutrophication offshore of New Caledonia. We find that δ44/40Ca remains stable across the last 130 years. The subfossil shell from a cenote may exhibit early δ44/40Ca diagenesis. Questions remain about the proportion of dietary vs ambient seawater calcium incorporation into the Nautilus shell. Values of δ15N do not indicate trophic level change in the last 130 years, and the subfossil shell may show diagenetic alteration of δ15N toward lower values. Future work using historical collections of Sepia and Spirula may provide additional calibration of fossil cephalopod geochemistry.
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6
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Guo X, Huang M, Luo X, You W, Ke C. Effects of one-year exposure to ocean acidification on two species of abalone. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 852:158144. [PMID: 35988613 DOI: 10.1016/j.scitotenv.2022.158144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 08/13/2022] [Accepted: 08/16/2022] [Indexed: 06/15/2023]
Abstract
Ocean acidification (OA) resulting from the absorption of excess atmospheric CO2 by the ocean threatens the survival of marine calcareous organisms, including mollusks. This study investigated the effects of OA on adults of two abalone species (Haliotis diversicolor, a subtropical species, and Haliotis discus hannai, a temperate species). Abalone were exposed to three pCO2 conditions for 1 year (ambient, ~ 880, and ~ 1600 μatm), and parameters, including mortality, physiology, immune system, biochemistry, and carry-over effects, were measured. Survival decreased significantly at ~ 800 μatm pCO2 for H. diversicolor, while H. discus hannai survival was negatively affected only at a higher OA level (~ 1600 μatm pCO2). H. diversicolor exhibited depressed metabolic and excretion rates and a higher O:N ratio under OA, indicating a shift to lipids as a metabolism substrate, while these physiological parameters in H. discus hannai were robust to OA. Both abalone failed to compensate for the pH decrease of their internal fluids because of the lowered hemolymph pH under OA. However, the reduced hemolymph pH did not affect total hemocyte counts or tested biomarkers. Additionally, H. discus hannai increased its hemolymph protein content under OA, which could indicate enhanced immunity. Larvae produced by adults exposed to the three pCO2 levels were cultured in the same pCO2 conditions and larval deformation and shell length were measured to observe carry-over effects. Enhanced OA tolerance was observed for H. discus hannai exposed under both of the OA treatments, while that was only observed following parental pCO2 ~ 880 μatm exposure for H. diversicolor. Following pCO2 ~ 1600 μatm parental exposure, H. diversicolor offspring exhibited higher deformation and lower shell growth in all pCO2 treatments. In general, H. diversicolor were more susceptible to OA compared with H. discus hannai, suggesting that H. diversicolor could be unable to adapt to acidified oceans in the future.
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Affiliation(s)
- Xiaoyu Guo
- College of Oceanology and Food Science, Quanzhou Normal University, Quanzhou 362000, PR China; XMU-MRB Abalone Research Center, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China; Fujian Province Key Laboratory for the Development of Bioactive Material from Marine Algae, Quanzhou Normal University, Quanzhou 362000, PR China
| | - Miaoqin Huang
- XMU-MRB Abalone Research Center, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China
| | - Xuan Luo
- XMU-MRB Abalone Research Center, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China
| | - Weiwei You
- XMU-MRB Abalone Research Center, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China
| | - Caihuan Ke
- XMU-MRB Abalone Research Center, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China.
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7
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Sun Y, Liu X, Xie X, Bai Y, Wang S, Teng W, Li D, Li H, Yu Z, Zhang M, Zhou Z, Liu X, Nie H, Du S, Li X, Li Q, Wang Q. A high-quality chromosome-level genome assembly of the bivalve mollusk Mactra veneriformis. G3 (BETHESDA, MD.) 2022; 12:jkac229. [PMID: 36165708 PMCID: PMC9635629 DOI: 10.1093/g3journal/jkac229] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 08/16/2022] [Indexed: 06/16/2023]
Abstract
Mactra veneriformis (Bivalvia: Mactridae) is a bivalve mollusk of major economic importance in China. Decreased natural yields of M. veneriformis have led to an urgent need for genomic resources. To address this problem and the currently limited knowledge of molecular evolution in this genus, we here report a high-quality chromosome-level genome assembly of M. veneriformis. Our approach yielded a 939.32 Mb assembled genome with an N50 contig length of 7,977.84 kb. Hi-C scaffolding of the genome resulted in assembly of 19 pseudochromosomes. Repetitive elements made up ∼51.79% of the genome assembly. A total of 29,315 protein-coding genes (PCGs) were predicted in M. veneriformis. Construction of a genome-level phylogenetic tree demonstrated that M. veneriformis and Ruditapes philippinarum diverged around 231 million years ago (MYA). Inter-species comparisons revealed that 493 gene families have undergone expansion and 449 have undergone contraction in the M. veneriformis genome. Chromosome-based macrosynteny analysis revealed a high degree of synteny between the 19 chromosomes of M. veneriformis and those of Patinopecten yessoensis. These results suggested that M. veneriformis has a similar karyotype to that of P. yessoensis, and that a highly conserved 19-chromosome karyotype was formed in the early differentiation stages of bivalves. In summary, the genomic resources generated in this work serve as a valuable reference for investigating the molecular mechanisms underlying biological functions in M. veneriformis and will facilitate future genetic improvement and disease treatment in this economically important species. Furthermore, the assembled genome greatly improves our understanding of early genomic evolution of the Bivalvia.
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Affiliation(s)
| | | | | | | | - Shuo Wang
- Dalian Key Laboratory of Genetic Resources for Marine Shellfish, Liaoning Ocean and Fisheries Science Research Institute, Dalian 116023, China
| | - Weiming Teng
- Dalian Key Laboratory of Genetic Resources for Marine Shellfish, Liaoning Ocean and Fisheries Science Research Institute, Dalian 116023, China
| | - Dacheng Li
- Dalian Key Laboratory of Genetic Resources for Marine Shellfish, Liaoning Ocean and Fisheries Science Research Institute, Dalian 116023, China
| | - Hualin Li
- Dalian Key Laboratory of Genetic Resources for Marine Shellfish, Liaoning Ocean and Fisheries Science Research Institute, Dalian 116023, China
| | - Zuoan Yu
- Dalian Key Laboratory of Genetic Resources for Marine Shellfish, Liaoning Ocean and Fisheries Science Research Institute, Dalian 116023, China
| | - Ming Zhang
- Dalian Key Laboratory of Genetic Resources for Marine Shellfish, Liaoning Ocean and Fisheries Science Research Institute, Dalian 116023, China
| | - Zunchun Zhou
- Dalian Key Laboratory of Genetic Resources for Marine Shellfish, Liaoning Ocean and Fisheries Science Research Institute, Dalian 116023, China
| | - Xu Liu
- Panjin Guanghe Crab Industry Co., LTD, Panjin 124299, China
| | - Hongtao Nie
- College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China
| | - Shaojun Du
- Department of Biochemistry and Molecular Biology, Institute of Marine and Environmental Technology, University of Maryland School of Medicine, Baltimore, MD 21202, USA
| | - Xiaodong Li
- Key Laboratory of Zoonosis, Aquaculture Department, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
| | - Qi Li
- Corresponding author: Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China.
| | - Qingzhi Wang
- Corresponding author: Dalian Key Laboratory of Genetic Resources for Marine Shellfish, Liaoning Ocean and Fisheries Science Research Institute, Dalian 116023, China.
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8
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Leung JYS, Zhang S, Connell SD. Is Ocean Acidification Really a Threat to Marine Calcifiers? A Systematic Review and Meta-Analysis of 980+ Studies Spanning Two Decades. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2107407. [PMID: 35934837 DOI: 10.1002/smll.202107407] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 06/24/2022] [Indexed: 06/15/2023]
Abstract
Ocean acidification is considered detrimental to marine calcifiers, but mounting contradictory evidence suggests a need to revisit this concept. This systematic review and meta-analysis aim to critically re-evaluate the prevailing paradigm of negative effects of ocean acidification on calcifiers. Based on 5153 observations from 985 studies, many calcifiers (e.g., echinoderms, crustaceans, and cephalopods) are found to be tolerant to near-future ocean acidification (pH ≈ 7.8 by the year 2100), but coccolithophores, calcifying algae, and corals appear to be sensitive. Calcifiers are generally more sensitive at the larval stage than adult stage. Over 70% of the observations in growth and calcification are non-negative, implying the acclimation capacity of many calcifiers to ocean acidification. This capacity can be mediated by phenotypic plasticity (e.g., physiological, mineralogical, structural, and molecular adjustments), transgenerational plasticity, increased food availability, or species interactions. The results suggest that the impacts of ocean acidification on calcifiers are less deleterious than initially thought as their adaptability has been underestimated. Therefore, in the forthcoming era of ocean acidification research, it is advocated that studying how marine organisms persist is as important as studying how they perish, and that future hypotheses and experimental designs are not constrained within the paradigm of negative effects.
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Affiliation(s)
- Jonathan Y S Leung
- Faculty of Materials and Energy, Southwest University, Chongqing, 400715, P. R. China
- Southern Seas Ecology Laboratories, School of Biological Sciences, The University of Adelaide, Adelaide, South Australia, 5005, Australia
| | - Sam Zhang
- Faculty of Materials and Energy, Southwest University, Chongqing, 400715, P. R. China
| | - Sean D Connell
- Southern Seas Ecology Laboratories, School of Biological Sciences, The University of Adelaide, Adelaide, South Australia, 5005, Australia
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9
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Gurr SJ, Trigg SA, Vadopalas B, Roberts SB, Putnam HM. Acclimatory gene expression of primed clams enhances robustness to elevated pCO 2. Mol Ecol 2022; 31:5005-5023. [PMID: 35947503 DOI: 10.1111/mec.16644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 08/02/2022] [Accepted: 08/02/2022] [Indexed: 11/30/2022]
Abstract
Sub-lethal exposure to environmental challenges may enhance ability to cope with chronic or repeated change, a process known as priming. In a previous study, pre-exposure to seawater enriched with pCO2 improved growth and reduced antioxidant capacity of juvenile Pacific geoduck Panopea generosa, suggesting that transcriptional shifts may drive phenotypic modifications post-priming. To this end, juvenile clams were sampled and TagSeq gene expression data analyzed after 1) a 110-day acclimation under ambient (921 μatm, naïve) and moderately-elevated pCO2 (2870 μatm, pre-exposed); then following 2) a second 7-day exposure to three pCO2 treatments (ambient: 754 μatm; moderately-elevated: 2750 μatm; severely-elevated: 4940 μatm), a 7-day return to ambient pCO2 , and a third 7-day exposure to two pCO2 treatments (ambient: 967 μatm; moderately-elevated: 3030 μatm). Pre-exposed geoducks frontloaded genes for stress and apoptosis/innate immune response, homeostatic processes, protein degradation, and transcriptional modifiers. Pre-exposed geoducks were also responsive to subsequent encounters, with gene sets enriched for mitochondrial recycling and immune defense under elevated pCO2 and energy metabolism and biosynthesis under ambient recovery. In contrast, gene sets with higher expression in naïve clams were enriched for fatty-acid degradation and glutathione components, suggesting naïve clams could be depleting endogenous fuels, with unsustainable energetic requirements if changes in carbonate chemistry persist. Collectively, our transcriptomic data indicates pCO2 priming during post-larval periods could, via gene expression regulation, enhance robustness in bivalves to environmental change. Such priming approaches may be beneficial for aquaculture, as seafood demand intensifies concurrent with increasing climate change in marine systems.
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Affiliation(s)
- Samuel J Gurr
- Department of Biological Sciences, University of Rhode Island, Kingston, RI, USA
| | - Shelly A Trigg
- University of Washington, School of Aquatic and Fishery Sciences, Seattle, WA, USA
| | | | - Steven B Roberts
- University of Washington, School of Aquatic and Fishery Sciences, Seattle, WA, USA
| | - Hollie M Putnam
- Department of Biological Sciences, University of Rhode Island, Kingston, RI, USA
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10
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Li J, Zhou Y, Qin Y, Wei J, Shigong P, Ma H, Li Y, Yuan X, Zhao L, Yan H, Zhang Y, Yu Z. Assessment of the juvenile vulnerability of symbiont-bearing giant clams to ocean acidification. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 812:152265. [PMID: 34902424 DOI: 10.1016/j.scitotenv.2021.152265] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 11/30/2021] [Accepted: 12/04/2021] [Indexed: 06/14/2023]
Abstract
Ocean acidification (OA) severely affects marine bivalves, especially their calcification processes. However, very little is known about the fate of symbiont-bearing giant clams in the acidified oceans, which hinders our ability to develop strategies to protect this ecologically and economically important group in coral reef ecosystems. Here, we explored the integrated juvenile responses of fluted giant clam Tridacna squamosa (Lamarck, 1819) to acidified seawater at different levels of biological organization. Our results revealed that OA did not cause a significant reduction in survival and shell growth performance, indicating that T. squamosa juveniles are tolerated to moderate acidification. Yet, significantly reduced net calcification rate demonstrated the calcifying physiology sensitivity to OA, in line with significant declines in symbiont photosynthetic yield and zooxanthellae density which in turn lowered the amount of energy supply for energetically expensive calcification processes. Subsequent transcriptome sequencing and comparative analysis of differentially expressed genes revealed that the regulation of calcification processes, such as transport of calcification substrates, acid-base regulation, synthesis of organic matrix in the calcifying fluid, as well as metabolic depression were the major response to OA. Taken together, the integration of physiological and molecular responses can provide a comprehensive understanding of how the early life history stages of giant clams respond to OA and make an important leap forward in assessing their fate under future ocean conditions.
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Affiliation(s)
- Jun Li
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China; Hainan Key Laboratory of Tropical Marine Biotechnology, Hainan Sanya Marine Ecosystem National Observation and Research Station, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Yinyin Zhou
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China; Hainan Key Laboratory of Tropical Marine Biotechnology, Hainan Sanya Marine Ecosystem National Observation and Research Station, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Yanpin Qin
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China; Hainan Key Laboratory of Tropical Marine Biotechnology, Hainan Sanya Marine Ecosystem National Observation and Research Station, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Jinkuan Wei
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China; Hainan Key Laboratory of Tropical Marine Biotechnology, Hainan Sanya Marine Ecosystem National Observation and Research Station, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Pengyang Shigong
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China; Hainan Key Laboratory of Tropical Marine Biotechnology, Hainan Sanya Marine Ecosystem National Observation and Research Station, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Haitao Ma
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China; Hainan Key Laboratory of Tropical Marine Biotechnology, Hainan Sanya Marine Ecosystem National Observation and Research Station, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Yunqing Li
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China; Hainan Key Laboratory of Tropical Marine Biotechnology, Hainan Sanya Marine Ecosystem National Observation and Research Station, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Xiangcheng Yuan
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China; Hainan Key Laboratory of Tropical Marine Biotechnology, Hainan Sanya Marine Ecosystem National Observation and Research Station, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China
| | - Liqiang Zhao
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China
| | - Hong Yan
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Yuehuan Zhang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China; Hainan Key Laboratory of Tropical Marine Biotechnology, Hainan Sanya Marine Ecosystem National Observation and Research Station, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China.
| | - Ziniu Yu
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, Innovation Academy of South China Sea Ecology and Environmental Engineering, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China; Hainan Key Laboratory of Tropical Marine Biotechnology, Hainan Sanya Marine Ecosystem National Observation and Research Station, Sanya Institute of Oceanology Chinese Academy of Sciences, Sanya 572024, China.
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11
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Lim YK, Dang X, Thiyagarajan V. Transgenerational responses to seawater pH in the edible oyster, with implications for the mariculture of the species under future ocean acidification. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 782:146704. [PMID: 33848868 DOI: 10.1016/j.scitotenv.2021.146704] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 03/14/2021] [Accepted: 03/19/2021] [Indexed: 06/12/2023]
Abstract
The majority of common edible oysters are projected to grow more slowly and have smaller impaired shells because of anthropogenic CO2-induced reductions in seawater carbonate ion concentration and pH, a process called ocean acidification (OA). Recent evidence has shown that OA has carryover effects, for example, larvae exposed to OA will also exhibit either positive or negative effects after metamorphosis. This study examined the hidden carryover effects of OA exposure during parental and larval stages on post-metamorphic traits of the commercially important oyster species Crassostrea hongkongensis. Adults of C. hongkongensis were exposed to control pH (pHNBS 8.0) and OA-induced low pH (pHNBS 7.4) conditions. Their larval offspring were then exposed to the same aquarium conditions before being out-planted as post-metamorphic juveniles at a mariculture site for 10 months. Initially, larval offspring were resilient to low pH with or without parental exposure. The larvae exposed to low pH had significantly faster development and higher percentage of settlement success compared to control groups. The out-planted juveniles with parental exposure had improved survival and growth compared to juveniles without parental exposure, regardless of the larval exposure history. This implies that transgenerational effects due to parental exposure not only persists but also have a greater influence than the within-generational effects of larval exposure. Our results shed light on the importance of linking the various life history stages when assessing the OA-induced carryover capacity of C. hongkongensis in the natural environment. Understanding these linked relationships helps us better predict the species rapid adaptation responses in the face of changing coastal conditions due to OA.
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Affiliation(s)
- Yong-Kian Lim
- The Swire Institute of Marine Science, Division of Ecology and Biodiversity, and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region
| | - Xin Dang
- The Swire Institute of Marine Science, Division of Ecology and Biodiversity, and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region
| | - Vengatesen Thiyagarajan
- The Swire Institute of Marine Science, Division of Ecology and Biodiversity, and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region.
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12
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Parker LM, Scanes E, O'Connor WA, Ross PM. Transgenerational plasticity responses of oysters to ocean acidification differ with habitat. J Exp Biol 2021; 224:jeb.239269. [PMID: 33785501 DOI: 10.1242/jeb.239269] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 03/23/2021] [Indexed: 01/06/2023]
Abstract
Transgenerational plasticity (TGP) has been identified as a critical mechanism of acclimation that may buffer marine organisms against climate change, yet whether the TGP response of marine organisms is altered depending on their habitat is unknown. Many marine organisms are found in intertidal zones where they experience episodes of emersion (air exposure) daily as the tide rises and recedes. During episodes of emersion, the accumulation of metabolic carbon dioxide (CO2) leads to hypercapnia for many species. How this metabolic hypercapnia impacts the TGP response of marine organisms to climate change is unknown as all previous transgenerational studies have been done under subtidal conditions, where parents are constantly immersed. Here, we assess the capacity of the ecologically and economically important oyster, Saccostrea glomerata, to acclimate to elevated CO2 dependent on habitat, across its vertical distribution, from the subtidal to intertidal zone. Tidal habitat altered both the existing tolerance and transgenerational response of S. glomerata to elevated CO2. Overall, larvae from parents conditioned in an intertidal habitat had a greater existing tolerance to elevated CO2 than larvae from parents conditioned in a subtidal habitat, but had a lower capacity for beneficial TGP following parental exposure to elevated CO2. Our results suggest that the TGP responses of marine species will not be uniform across their distribution and highlights the need to consider the habitat of a species when assessing TGP responses to climate change stressors.
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Affiliation(s)
- Laura M Parker
- The University of Sydney, School of Life and Environmental Sciences, Camperdown, NSW 2006, Australia.,The University of New South Wales, School of Biological, Earth and Environmental Sciences, Kensington, NSW 2052, Australia
| | - Elliot Scanes
- The University of Sydney, School of Life and Environmental Sciences, Camperdown, NSW 2006, Australia.,The Western Sydney University, School of Science and Health, Locked Bag 1797, Penrith South DC 2751, Sydney, NSW 2751, Australia
| | - Wayne A O'Connor
- New South Wales Department of Primary Industries, Port Stephens Fisheries Institute, Taylors Beach, NSW 2316, Australia
| | - Pauline M Ross
- The University of Sydney, School of Life and Environmental Sciences, Camperdown, NSW 2006, Australia.,The Western Sydney University, School of Science and Health, Locked Bag 1797, Penrith South DC 2751, Sydney, NSW 2751, Australia
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13
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Moore B, Comeau S, Bekaert M, Cossais A, Purdy A, Larcombe E, Puerzer F, McCulloch MT, Cornwall CE. Rapid multi-generational acclimation of coralline algal reproductive structures to ocean acidification. Proc Biol Sci 2021; 288:20210130. [PMID: 33975470 PMCID: PMC8113899 DOI: 10.1098/rspb.2021.0130] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 04/15/2021] [Indexed: 12/25/2022] Open
Abstract
The future of coral reef ecosystems is under threat because vital reef-accreting species such as coralline algae are highly susceptible to ocean acidification. Although ocean acidification is known to reduce coralline algal growth rates, its direct effects on the development of coralline algal reproductive structures (conceptacles) is largely unknown. Furthermore, the long-term, multi-generational response of coralline algae to ocean acidification is extremely understudied. Here, we investigate how mean pH, pH variability and the pH regime experienced in their natural habitat affect coralline algal conceptacle abundance and size across six generations of exposure. We show that second-generation coralline algae exposed to ocean acidification treatments had conceptacle abundances 60% lower than those kept in present-day conditions, suggesting that conceptacle development is initially highly sensitive to ocean acidification. However, this negative effect of ocean acidification on conceptacle abundance disappears after three generations of exposure. Moreover, we show that this transgenerational acclimation of conceptacle development is not facilitated by a trade-off with reduced investment in growth, as higher conceptacle abundances are associated with crusts with faster growth rates. These results indicate that the potential reproductive output of coralline algae may be sustained under future ocean acidification.
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Affiliation(s)
- B. Moore
- Marine Climate Change Unit, Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
- ARC Centre of Excellence for Coral Reef Studies, The University of Western Australia, Crawley, Western Australia, Australia
| | - S. Comeau
- ARC Centre of Excellence for Coral Reef Studies, The University of Western Australia, Crawley, Western Australia, Australia
- Sorbonne Université, CNRS-INSU, Laboratoire d'Océanographie de Villefranche, Villefranche-sur-mer, France
| | - M. Bekaert
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - A. Cossais
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - A. Purdy
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - E. Larcombe
- ARC Centre of Excellence for Coral Reef Studies, The University of Western Australia, Crawley, Western Australia, Australia
| | - F. Puerzer
- ARC Centre of Excellence for Coral Reef Studies, The University of Western Australia, Crawley, Western Australia, Australia
| | - M. T. McCulloch
- ARC Centre of Excellence for Coral Reef Studies, The University of Western Australia, Crawley, Western Australia, Australia
| | - C. E. Cornwall
- ARC Centre of Excellence for Coral Reef Studies, The University of Western Australia, Crawley, Western Australia, Australia
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand
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14
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Martins M, Carreiro-Silva M, Martins GM, Barcelos E Ramos J, Viveiros F, Couto RP, Parra H, Monteiro J, Gallo F, Silva C, Teodósio A, Guilini K, Hall-Spencer JM, Leitão F, Chícharo L, Range P. Ervilia castanea (Mollusca, Bivalvia) populations adversely affected at CO 2 seeps in the North Atlantic. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 754:142044. [PMID: 33254890 DOI: 10.1016/j.scitotenv.2020.142044] [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: 05/31/2020] [Revised: 08/08/2020] [Accepted: 08/26/2020] [Indexed: 06/12/2023]
Abstract
Sites with naturally high CO2 conditions provide unique opportunities to forecast the vulnerability of coastal ecosystems to ocean acidification, by studying the biological responses and potential adaptations to this increased environmental variability. In this study, we investigated the bivalve Ervilia castanea in coastal sandy sediments at reference sites and at volcanic CO2 seeps off the Azores, where the pH of bottom waters ranged from average oceanic levels of 8.2, along gradients, down to 6.81, in carbonated seawater at the seeps. The bivalve population structure changed markedly at the seeps. Large individuals became less abundant as seawater CO2 levels rose and were completely absent from the most acidified sites. In contrast, small bivalves were most abundant at the CO2 seeps. We propose that larvae can settle and initially live in high abundances under elevated CO2 levels, but that high rates of post-settlement dispersal and/or mortality occur. Ervilia castanea were susceptible to elevated CO2 levels and these effects were consistently associated with lower food supplies. This raises concerns about the effects of ocean acidification on the brood stock of this species and other bivalve molluscs with similar life history traits.
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Affiliation(s)
- Marta Martins
- Centro Interdisciplinar de Investigação Marinha e Ambiental - Universidade do Porto, Porto, Portugal; Centro de Ciências do Mar do Algarve, Universidade do Algarve, Faro, Portugal
| | - Marina Carreiro-Silva
- IMAR - Instituto do Mar & OKEANOS Research Unit, Universidade dos Açores, 9901-862 Horta, Portugal
| | | | | | - Fátima Viveiros
- Research Institute for Volcanology and Risk Assessment, University of the Azores, Ponta Delgada, Portugal; Faculty of Sciences and Technology, University of the Azores, Ponta Delgada, Portugal
| | - Ruben P Couto
- cE3c - Universidade dos Açores, Ponta Delgada, Portugal
| | - Hugo Parra
- IMAR - Instituto do Mar & OKEANOS Research Unit, Universidade dos Açores, 9901-862 Horta, Portugal
| | - João Monteiro
- MARE - Marine and Environmental Sciences Centre, Madeira, Portugal
| | - Francesca Gallo
- IITAA - University of the Azores, Angra do Heroísmo, Portugal
| | - Catarina Silva
- Research Institute for Volcanology and Risk Assessment, University of the Azores, Ponta Delgada, Portugal; Center for Information and Seismovolcanic Surveillance of the Azores, Rua Mãe de Deus, 9500-321 Ponta Delgada, Portugal
| | - Alexandra Teodósio
- Centro de Ciências do Mar do Algarve, Universidade do Algarve, Faro, Portugal
| | - Katja Guilini
- Marine Biology Research Group, Ghent University, Belgium
| | - Jason M Hall-Spencer
- School of Biological and Marine Sciences, University of Plymouth, United Kingdom; Shimoda Marine Research Center, University of Tsukuba, Japan
| | - Francisco Leitão
- Centro de Ciências do Mar do Algarve, Universidade do Algarve, Faro, Portugal
| | | | - Pedro Range
- Environmental Science Center, Qatar University, P.O. Box 2713, Doha, Qatar.
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15
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Li P, Li ZH. Neurotoxicity and physiological stress in brain of zebrafish chronically exposed to tributyltin. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2021; 84:20-30. [PMID: 33016251 DOI: 10.1080/15287394.2020.1828209] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Tributyltin (TBT), an organotin compound, is hazardous in aquatic ecosystems. However, the mechanisms underlying TBT-induced central nervous system (CNS) toxicity remain to be determined especially in freshwater aquatic vertebrates. The aim of present study was to investigate the effects of chronic exposure to TBT on brain functions in a freshwater teleost the adult wild-type zebrafish (Danio rerio). Fish were exposed to sublethal concentrations of TBT (10, 100 or 300 ng/L) for 6 weeks. The influence of long-term TBT exposure was assessed in the brain of zebrafish with antioxidant related indices including malondialdehyde (MDA) levels and total antioxidant capacity, neurological parameters such as activities of acetylcholinesterase, and monoamine oxidase as well as levels of nitric oxide, dopamine, 5-hydroxytryptamine. In addition indices related to sensitivity of toxic insult such as cytochrome P450 1 regulation and heat shock protein 70 were determined. The regulation of related genes involved in endoplasmic reticulum stress (ERS), apoptosis and Nrf2 pathway were measured. Adverse physiological and biochemical responses were significantly enhanced in a concentration-dependent manner reflecting neurotoxicity attributed to TBT exposure. Our findings provide further insight into TBT-induced toxicity in wild-type zebrafish. and enhance our understanding of the molecular mechanisms underlying TBT-initiated CNS effects.
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Affiliation(s)
- Ping Li
- Marine College, Shandong University , Weihai, Shandong, China
| | - Zhi-Hua Li
- Marine College, Shandong University , Weihai, Shandong, China
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences , Wuhan, China
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16
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Marques JA, Flores F, Patel F, Bianchini A, Uthicke S, Negri AP. Acclimation history modulates effect size of calcareous algae (Halimeda opuntia) to herbicide exposure under future climate scenarios. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 739:140308. [PMID: 32846507 DOI: 10.1016/j.scitotenv.2020.140308] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 06/11/2020] [Accepted: 06/15/2020] [Indexed: 06/11/2023]
Abstract
Tropical marine habitat-builders such as calcifying green algae can be susceptible to climate change (warming and acidification). This study evaluated the cumulative effects of ocean warming (OW), ocean acidification (OA) and the herbicide diuron on the calcifying green algae Halimeda opuntia. We also assessed the influence of acclimation history to experimental climate change conditions on physiological responses. H. opuntia were exposed for 15 days to orthogonal combinations of three climate scenarios [ambient (28 °C, pCO2 = 378 ppm), 2050 (29 °C, pCO2 = 567 ppm) and 2100 (30 °C, pCO2 = 721 ppm)] and to six diuron concentrations (up to 29 μg L-1). Half of the H. opuntia had been acclimated for eight months to the climate scenarios in a mesocosm approach, while the remaining half were not pre-acclimated, as is current practice in most experiments. Climate effects on quantum yield (ΔF/Fm'), photosynthesis and calcification in future climate scenarios were significantly stronger (by -24, -46 and +26%, respectively) in non-acclimated algae, suggesting experimental bias may exaggerate effects in organisms not appropriately acclimated to future-climate conditions. Thus, full analysis was done on acclimated plants only. Interactive effects of future climate scenarios and diuron were observed for ΔF/Fm', while the detrimental effects of climate and diuron on net photosynthesis and total antioxidant capacity (TAC) were additive. Calcification-related enzymes were negatively affected only by diuron, with inhibition of Ca-ATPase and upregulation of carbonic anhydrase. The combined and consistent physiological and biochemical evidence of negative impacts (across six indicators) of both herbicide and future-climate conditions on the health of H. opuntia highlights the need to address both climate change and water quality. Guideline values for contaminants may also need to be lowered considering 'climate adjusted thresholds'. Importantly, this study highlights the value of applying substantial future climate acclimation periods in experimental studies to avoid exaggerated organism responses to OW and OA.
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Affiliation(s)
- Joseane A Marques
- Programa de Pós-Graduação em Oceanografia Biológica, Universidade Federal do Rio Grande, RS, Brazil.
| | - Florita Flores
- Australian Institute of Marine Science, Townsville, QLD 4810, Australia.
| | - Frances Patel
- Australian Institute of Marine Science, Townsville, QLD 4810, Australia.
| | - Adalto Bianchini
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, RS, Brazil.
| | - Sven Uthicke
- Australian Institute of Marine Science, Townsville, QLD 4810, Australia.
| | - Andrew P Negri
- Australian Institute of Marine Science, Townsville, QLD 4810, Australia.
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17
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Leung JYS, Chen Y, Nagelkerken I, Zhang S, Xie Z, Connell SD. Calcifiers can Adjust Shell Building at the Nanoscale to Resist Ocean Acidification. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2003186. [PMID: 32776486 DOI: 10.1002/smll.202003186] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 06/26/2020] [Indexed: 06/11/2023]
Abstract
Ocean acidification is considered detrimental to marine calcifiers based on laboratory studies showing that increased seawater acidity weakens their ability to build calcareous shells needed for growth and protection. In the natural environment, however, the effects of ocean acidification are subject to ecological and evolutionary processes that may allow calcifiers to buffer or reverse these short-term negative effects through adaptive mechanisms. Using marine snails inhabiting a naturally CO2 -enriched environment over multiple generations, it is discovered herein that they build more durable shells (i.e., mechanically more resilient) by adjusting the building blocks of their shells (i.e., calcium carbonate crystals), such as atomic rearrangement to reduce nanotwin thickness and increased incorporation of organic matter. However, these adaptive adjustments to future levels of ocean acidification (year 2100) are eroded at extreme CO2 concentrations, leading to construction of more fragile shells. The discovery of adaptive mechanisms of shell building at the nanoscale provides a new perspective on why some calcifiers may thrive and others collapse in acidifying oceans, and highlights the inherent adaptability that some species possess in adjusting to human-caused environmental change.
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Affiliation(s)
- Jonathan Y S Leung
- Centre for Advanced Thin Films and Devices, School of Materials and Energy, Southwest University, Chongqing, 400715, P. R. China
- Southern Seas Ecology Laboratories, The Environment Institute, School of Biological Sciences, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Yujie Chen
- Centre for Advanced Thin Films and Devices, School of Materials and Energy, Southwest University, Chongqing, 400715, P. R. China
- School of Mechanical Engineering, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Ivan Nagelkerken
- Southern Seas Ecology Laboratories, The Environment Institute, School of Biological Sciences, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Sam Zhang
- Centre for Advanced Thin Films and Devices, School of Materials and Energy, Southwest University, Chongqing, 400715, P. R. China
| | - Zonghan Xie
- School of Mechanical Engineering, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Sean D Connell
- Southern Seas Ecology Laboratories, The Environment Institute, School of Biological Sciences, The University of Adelaide, Adelaide, SA, 5005, Australia
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18
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Putnam HM, Ritson-Williams R, Cruz JA, Davidson JM, Gates RD. Environmentally-induced parental or developmental conditioning influences coral offspring ecological performance. Sci Rep 2020; 10:13664. [PMID: 32788607 PMCID: PMC7423898 DOI: 10.1038/s41598-020-70605-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 06/23/2020] [Indexed: 01/22/2023] Open
Abstract
The persistence of reef building corals is threatened by human-induced environmental change. Maintaining coral reefs into the future requires not only the survival of adults, but also the influx of recruits to promote genetic diversity and retain cover following adult mortality. Few studies examine the linkages among multiple life stages of corals, despite a growing knowledge of carryover effects in other systems. We provide a novel test of coral parental conditioning to ocean acidification (OA) and tracking of offspring for 6 months post-release to better understand parental or developmental priming impacts on the processes of offspring recruitment and growth. Coral planulation was tracked for 3 months following adult exposure to high pCO2 and offspring from the second month were reciprocally exposed to ambient and high pCO2 for an additional 6 months. Offspring of parents exposed to high pCO2 had greater settlement and survivorship immediately following release, retained survivorship benefits during 1 and 6 months of continued exposure, and further displayed growth benefits to at least 1 month post release. Enhanced performance of offspring from parents exposed to high conditions was maintained despite the survivorship in both treatments declining in continued exposure to OA. Conditioning of the adults while they brood their larvae, or developmental acclimation of the larvae inside the adult polyps, may provide a form of hormetic conditioning, or environmental priming that elicits stimulatory effects. Defining mechanisms of positive acclimatization, with potential implications for carry over effects, cross-generational plasticity, and multi-generational plasticity, is critical to better understanding ecological and evolutionary dynamics of corals under regimes of increasing environmental disturbance. Considering environmentally-induced parental or developmental legacies in ecological and evolutionary projections may better account for coral reef response to the chronic stress regimes characteristic of climate change.
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Affiliation(s)
- Hollie M Putnam
- Department of Biological Sciences, University of Rhode Island, Kingston, RI, USA.
| | | | - Jolly Ann Cruz
- Micronesia Islands Nature Alliance, Garapan, Saipan, CNMI, 96950, USA
| | - Jennifer M Davidson
- Hawai'i Institute of Marine Biology, University of Hawai'i, Mānoa, Honolulu, HI, USA
| | - Ruth D Gates
- Hawai'i Institute of Marine Biology, University of Hawai'i, Mānoa, Honolulu, HI, USA
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19
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Nishida K, Chew YC, Miyairi Y, Hirabayashi S, Suzuki A, Hayashi M, Yamamoto Y, Sato M, Nojiri Y, Yokoyama Y. Novel reverse radioisotope labelling experiment reveals carbon assimilation of marine calcifiers under ocean acidification conditions. Methods Ecol Evol 2020. [DOI: 10.1111/2041-210x.13396] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kozue Nishida
- Department of Chemistry and Material Engineering National Institute of TechnologyIbaraki College Hitachinaka Japan
- Japan Society for the Promotion of Science (JSPS) Tokyo Japan
- Faculty of Life and Environmental Sciences University of Tsukuba Tsukuba Japan
| | - Yue Chin Chew
- Atmosphere and Ocean Research Institute The University of Tokyo Kashiwa Japan
- Graduate Program on Environmental Sciences The University of Tokyo Tokyo Japan
| | - Yosuke Miyairi
- Atmosphere and Ocean Research Institute The University of Tokyo Kashiwa Japan
| | - Shoko Hirabayashi
- Atmosphere and Ocean Research Institute The University of Tokyo Kashiwa Japan
- Department of Earth and Planetary Science Graduate School of Science The University of Tokyo Tokyo Japan
| | - Atsushi Suzuki
- Geological Survey of Japan National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Japan
| | - Masahiro Hayashi
- The Demonstration Laboratory Marine Ecology Research Institute Kashiwazaki Japan
| | - Yuzo Yamamoto
- The Demonstration Laboratory Marine Ecology Research Institute Kashiwazaki Japan
| | - Mizuho Sato
- Geological Survey of Japan National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Japan
- Asahi Geo‐Survey Co. Ltd Tokyo Japan
| | - Yukihiro Nojiri
- Department of Earth and Environmental Sciences Hirosaki University Hirosaki Japan
- Center for Global Environmental Research National Institute for Environmental Studies Tsukuba Japan
| | - Yusuke Yokoyama
- Atmosphere and Ocean Research Institute The University of Tokyo Kashiwa Japan
- Graduate Program on Environmental Sciences The University of Tokyo Tokyo Japan
- Department of Earth and Planetary Science Graduate School of Science The University of Tokyo Tokyo Japan
- Biogeochemistry Program Japan Agency for Marine‐Earth Science and Technology Yokosuka Japan
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20
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Zhao L, Liang J, Liang J, Liu B, Deng Y, Sun X, Li H, Lu Y, Yang F. Experimental study of transgenerational effects, pH and predation risk on byssus production in a swiftly spreading invasive fouling Asian mussel, Musculista senhousia (Benson). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 260:114111. [PMID: 32041087 DOI: 10.1016/j.envpol.2020.114111] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 01/20/2020] [Accepted: 01/30/2020] [Indexed: 06/10/2023]
Abstract
Marine biofouling by the highly invasive Asian date mussel, Musculista senhousia (Benson), has caused devastating ecological and economic consequences in most coastal seas. Acute and short-term exposure experiments have demonstrated the susceptibility of mussel byssus - a holdfast structure by which mussels strongly adhere to underwater substrates, to pH. Yet, the influence of long-term exposures, especially across multiple generations, is largely unknown. Here, we evaluated transgenerational effects of pH on byssal threads secreted by M. senhousia, and compared byssus performance in absence versus presence of predators. If no predation occurred, neither pH nor transgenerational exposure significantly affected the number, length and diameter of byssal threads. Under predation risk, mussels, even exposed to low pH, significantly enhanced byssus production. In particular, individuals originating from parents grown under low conditions produced significantly more, longer and stronger byssal threads compared with those spawn from parents exposed to high pH, demonstrating positive transgenerational effects which can confer mussel byssus resilience at low pH. Given the energetically expensive nature of byssus production, these observations can be in line with previously documented plasticity of energy metabolism arose following transgenerational exposure to low pH, which allows mussels to allocate more energy to fulfill the synthesis and secretion of byssal proteins. Our findings demonstrate the remarkable ability of highly invasive fouling mussel species to respond plastically and adapt behaviorally to low pH and hence provide important implications for linking marine biofouling, biological invasion, and coastal acidification.
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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.
| | - Jian Liang
- Department of Fisheries, Tianjin Agricultural University, Tianjin, 300384, China
| | - Junping Liang
- College of Fisheries, Henan Normal University, Xinxiang, 453007, China
| | - Baozhan Liu
- CNOOC EnerTech-Safety & Environmental Protection Co., Tianjin, 300457, China
| | - Yuewen Deng
- College of Fisheries, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Xin Sun
- Dalian Zhangzidao Fishery Group Co. Ltd., Dalian, 116026, China
| | - Hui Li
- College of Fisheries, Henan Normal University, Xinxiang, 453007, China
| | - Yanan Lu
- College of Life Science and Fisheries, Dalian Ocean University, Dalian, 116023, China
| | - Feng Yang
- College of Life Science and Fisheries, Dalian Ocean University, Dalian, 116023, China
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21
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Houston RD, Bean TP, Macqueen DJ, Gundappa MK, Jin YH, Jenkins TL, Selly SLC, Martin SAM, Stevens JR, Santos EM, Davie A, Robledo D. Harnessing genomics to fast-track genetic improvement in aquaculture. Nat Rev Genet 2020; 21:389-409. [PMID: 32300217 DOI: 10.1038/s41576-020-0227-y] [Citation(s) in RCA: 134] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/09/2020] [Indexed: 12/12/2022]
Abstract
Aquaculture is the fastest-growing farmed food sector and will soon become the primary source of fish and shellfish for human diets. In contrast to crop and livestock production, aquaculture production is derived from numerous, exceptionally diverse species that are typically in the early stages of domestication. Genetic improvement of production traits via well-designed, managed breeding programmes has great potential to help meet the rising seafood demand driven by human population growth. Supported by continuous advances in sequencing and bioinformatics, genomics is increasingly being applied across the broad range of aquaculture species and at all stages of the domestication process to optimize selective breeding. In the future, combining genomic selection with biotechnological innovations, such as genome editing and surrogate broodstock technologies, may further expedite genetic improvement in aquaculture.
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Affiliation(s)
- Ross D Houston
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush Campus, UK.
| | - Tim P Bean
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush Campus, UK
| | - Daniel J Macqueen
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush Campus, UK
| | - Manu Kumar Gundappa
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush Campus, UK
| | - Ye Hwa Jin
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush Campus, UK
| | - Tom L Jenkins
- Sustainable Aquaculture Futures, Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | | | | | - Jamie R Stevens
- Sustainable Aquaculture Futures, Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | - Eduarda M Santos
- Sustainable Aquaculture Futures, Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | - Andrew Davie
- Institute of Aquaculture, University of Stirling, Stirling, UK
| | - Diego Robledo
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush Campus, UK
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22
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Lee YH, Jeong CB, Wang M, Hagiwara A, Lee JS. Transgenerational acclimation to changes in ocean acidification in marine invertebrates. MARINE POLLUTION BULLETIN 2020; 153:111006. [PMID: 32275552 DOI: 10.1016/j.marpolbul.2020.111006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 02/18/2020] [Accepted: 02/19/2020] [Indexed: 06/11/2023]
Abstract
The rapid pace of increasing oceanic acidity poses a major threat to the fitness of the marine ecosystem, as well as the buffering capacity of the oceans. Disruption in chemical equilibrium in the ocean leads to decreased carbonate ion precipitation, resulting in calcium carbonate saturation. If these trends continue, calcifying invertebrates will experience difficultly maintaining their calcium carbonate exoskeleton and shells. Because malfunction of exoskeleton formation by calcifiers in response to ocean acidification (OA) will have non-canonical biological cascading results in the marine ecosystem, many studies have investigated the direct and indirect consequences of OA on ecosystem- and physiology-related traits of marine invertebrates. Considering that evolutionary adaptation to OA depends on the duration of OA effects, long-term exposure to OA stress over multi-generations may result in adaptive mechanisms that increase the potential fitness of marine invertebrates in response to OA. Transgenerational studies have the potential to elucidate the roles of acclimation, carryover effects, and evolutionary adaptation within and over generations in response to OA. In particular, understanding mechanisms of transgenerational responses (e.g., antioxidant responses, metabolic changes, epigenetic reprogramming) to changes in OA will enhance our understanding of marine invertebrate in response to rapid climate change.
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Affiliation(s)
- Young Hwan Lee
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon 16419, South Korea
| | - Chang-Bum Jeong
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon 16419, South Korea; Department of Marine Science, College of Nature Science, Incheon National University, Incheon 22012, South Korea
| | - Minghua Wang
- State Key Laboratory of Marine Environmental Science/College of the Environment & Ecology, Xiamen University, Xiamen 36110, China; Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361102, China
| | - Atsushi Hagiwara
- Institute of Integrated Science and Technology, Nagasaki University, Nagasaki 852-8521, Japan; Organization for Marine Science and Technology, Nagasaki University, Nagasaki 852-8521, Japan
| | - Jae-Seong Lee
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon 16419, South Korea.
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23
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Zhao L, Lu Y, Yang F, Liang J, Deng Y. Transgenerational biochemical effects of seawater acidification on the Manila clam (Ruditapes philippinarum). THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 710:136420. [PMID: 31923699 DOI: 10.1016/j.scitotenv.2019.136420] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 12/14/2019] [Accepted: 12/28/2019] [Indexed: 06/10/2023]
Abstract
Ocean acidification can negatively impact marine bivalves. Pivotal to projecting their fate is the ability to acclimate and adapt to shifts in seawater chemistry. Transgenerational plasticity enables marine bivalves to acclimate, yet the underlying mechanisms at different levels of biological organization remain poorly understood. Here, we performed a transgenerational experiment to understand biochemical responses of the Manila clam, Ruditapes philippinarum, following exposure to moderately reduced seawater pH (from 8.1 to 7.7). Activities of tissue calcification-relevant enzymes, such as carbonic anhydrase (CA), acid phosphatase (ACP) and alkaline phosphatase (ALP), energy-metabolizing enzymes, such as Na+/K+-ATPase (NKA) and Ca2+/Mg2+-ATPase (CMA), as well as tissue energy reserves (glycogen, lipid and protein) were assayed. With decreasing seawater pH, adult R. philippinarum exhibited significantly increased CA activity, and especially the clams with a history of transgenerational exposure displaying significantly higher CA activity than those spawned from parents exposed to ambient seawater pH. Yet, ACP and ALP activities remained unaffected. Transgenerational exposure to reduced seawater pH led to significant increases of NKA activity, while no transgenerational response of CMA activity was observed. Tissue glycogen and lipid contents were significantly depleted under acidified conditions regardless of transgenerational exposure. Yet, transgenerational alleviation in the net protein degradation was found. These findings suggest that our current understanding of transgenerational responses is still limited by the achievable time-window possible in the laboratory. While the energetic budget is lower under acidified conditions, there is no evidence of transgenerational recovery in term of energetic budget. Therefore, this work demonstrates that the critical basis of ocean acidification resilience can most likely be explained in energetic terms.
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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.
| | - Yanan Lu
- College of Life Science and Fisheries, Dalian Ocean University, Dalian 116023, China
| | - Feng Yang
- College of Life Science and Fisheries, Dalian Ocean University, Dalian 116023, China
| | - Jian Liang
- Department of Fisheries, Tianjin Agricultural University, Tianjin 300384, China
| | - Yuewen Deng
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China
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24
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Zhao L, Milano S, Tanaka K, Liang J, Deng Y, Yang F, Walliser EO, Schöne BR. Trace elemental alterations of bivalve shells following transgenerational exposure to ocean acidification: Implications for geographical traceability and environmental reconstruction. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 705:135501. [PMID: 31846816 DOI: 10.1016/j.scitotenv.2019.135501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 11/09/2019] [Accepted: 11/11/2019] [Indexed: 06/10/2023]
Abstract
Trace elements of bivalve shells can potentially record the physical and chemical properties of the ambient seawater during shell formation, thereby providing valuable information on environmental conditions and provenance of the bivalves. In an acidifying ocean, whether and how seawater acidification affects the trace elemental composition of bivalve shells is largely unknown. Here, we investigated the transgenerational effects of OA projected for the end of the 21st century on the incorporation of trace elements into shells of the Manila clam, Ruditapes philippinarum. Neither seawater pH nor transgenerational exposure affected the Mg and Sr composition of the shells. Compared with clams grown under ambient conditions, specimens exposed to elevated CO2 levels incorporated significantly higher amounts of Cu, Zn, Ba and Pb into their shells, in line with the fact that at lower pH, these elements in seawater occur at higher fractions in free forms which are biologically available. Transgenerational effects manifested themselves significantly during the incorporation of Cu and Zn into the shells, most likely because Cu and Zn are biologically essential trace elements for metabolic processes. In addition, the plasticity of metabolism toward energetic efficiency following transgenerational exposure confers the clams enhanced ability to discriminate against Cu and Zn during the uptake from the ambient environment to the site of calcification. In the context of near-future OA scenarios, these findings may provide unique insights into the two primary applications of trace elements of bivalve shells as geographical tracers and proxies of environmental conditions.
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Affiliation(s)
- Liqiang Zhao
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China; Institute of Geosciences, University of Mainz, Mainz 55128, Germany; Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan.
| | - Stefania Milano
- Institute of Geosciences, University of Mainz, Mainz 55128, Germany; Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Leipzig 04103, Germany
| | - Kentaro Tanaka
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan
| | - Jian Liang
- Department of Fisheries, Tianjin Agricultural University, Tianjin 300384, China
| | - Yuewen Deng
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China
| | - Feng Yang
- College of Life Science and Fisheries, Dalian Ocean University, Dalian 116023, China
| | - Eric O Walliser
- Institute of Geosciences, University of Mainz, Mainz 55128, Germany
| | - Bernd R Schöne
- Institute of Geosciences, University of Mainz, Mainz 55128, Germany
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25
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Strader ME, Wong JM, Hofmann GE. Ocean acidification promotes broad transcriptomic responses in marine metazoans: a literature survey. Front Zool 2020; 17:7. [PMID: 32095155 PMCID: PMC7027112 DOI: 10.1186/s12983-020-0350-9] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 01/06/2020] [Indexed: 01/16/2023] Open
Abstract
For nearly a decade, the metazoan-focused research community has explored the impacts of ocean acidification (OA) on marine animals, noting that changes in ocean chemistry can impact calcification, metabolism, acid-base regulation, stress response and behavior in organisms that hold high ecological and economic value. Because OA interacts with several key physiological processes in marine organisms, transcriptomics has become a widely-used method to characterize whole organism responses on a molecular level as well as inform mechanisms that explain changes in phenotypes observed in response to OA. In the past decade, there has been a notable rise in studies that examine transcriptomic responses to OA in marine metazoans, and here we attempt to summarize key findings across these studies. We find that organisms vary dramatically in their transcriptomic responses to pH although common patterns are often observed, including shifts in acid-base ion regulation, metabolic processes, calcification and stress response mechanisms. We also see a rise in transcriptomic studies examining organismal response to OA in a multi-stressor context, often reporting synergistic effects of OA and temperature. In addition, there is an increase in studies that use transcriptomics to examine the evolutionary potential of organisms to adapt to OA conditions in the future through population and transgenerational experiments. Overall, the literature reveals complex organismal responses to OA, in which some organisms will face more dramatic consequences than others. This will have wide-reaching impacts on ocean communities and ecosystems as a whole.
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Affiliation(s)
- Marie E Strader
- 1Department of Ecology, Evolution and Marine Biology, University of California Santa Barbara, Santa Barbara, CA 93106 USA.,2Department of Biological Sciences, Auburn University, Auburn, AL 36849 USA
| | - Juliet M Wong
- 1Department of Ecology, Evolution and Marine Biology, University of California Santa Barbara, Santa Barbara, CA 93106 USA.,3Present address: Department of Biological Sciences, Florida International University, North Miami, FL 33181 USA
| | - Gretchen E Hofmann
- 1Department of Ecology, Evolution and Marine Biology, University of California Santa Barbara, Santa Barbara, CA 93106 USA
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26
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Sillanpää JK, Cardoso JCDR, Félix RC, Anjos L, Power DM, Sundell K. Dilution of Seawater Affects the Ca 2 + Transport in the Outer Mantle Epithelium of Crassostrea gigas. Front Physiol 2020; 11:1. [PMID: 32038307 PMCID: PMC6987452 DOI: 10.3389/fphys.2020.00001] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 01/01/2020] [Indexed: 12/18/2022] Open
Abstract
Varying salinities of coastal waters are likely to affect the physiology and ion transport capabilities of calcifying marine organisms such as bivalves. To investigate the physiological effect of decreased environmental salinity in bivalves, adult oysters (Crassostrea gigas) were exposed for 14 days to 50% seawater (14) and the effects on mantle ion transport, electrophysiology and the expression of Ca2+ transporters and channels relative to animals maintained in full strength sea water (28) was evaluated. Exposure of oysters to a salinity of 14 decreased the active mantle transepithelial ion transport and specifically affected Ca2+ transfer. Gene expression of the Na+/K+-ATPase and the sarco(endo)plasmic reticulum Ca2+-ATPase was decreased whereas the expression of the T-type voltage-gated Ca channel and the Na+/Ca2+-exchanger increased compared to animals maintained in full SW. The results indicate that decreased environmental salinities will most likely affect not only osmoregulation but also bivalve biomineralization and shell formation.
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Affiliation(s)
- J Kirsikka Sillanpää
- Fish Endocrinology Laboratory, Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Joao Carlos Dos Reis Cardoso
- Comparative Endocrinology and Integrative Biology, Centre of Marine Sciences, Universidade do Algarve, Faro, Portugal
| | - Rute Castelo Félix
- Comparative Endocrinology and Integrative Biology, Centre of Marine Sciences, Universidade do Algarve, Faro, Portugal
| | - Liliana Anjos
- Comparative Endocrinology and Integrative Biology, Centre of Marine Sciences, Universidade do Algarve, Faro, Portugal
| | - Deborah Mary Power
- Comparative Endocrinology and Integrative Biology, Centre of Marine Sciences, Universidade do Algarve, Faro, Portugal
| | - Kristina Sundell
- Fish Endocrinology Laboratory, Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
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27
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Byrne M, Foo SA, Ross PM, Putnam HM. Limitations of cross- and multigenerational plasticity for marine invertebrates faced with global climate change. GLOBAL CHANGE BIOLOGY 2020; 26:80-102. [PMID: 31670444 DOI: 10.1111/gcb.14882] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 09/12/2019] [Indexed: 05/18/2023]
Abstract
Although cross generation (CGP) and multigenerational (MGP) plasticity have been identified as mechanisms of acclimation to global change, the weight of evidence indicates that parental conditioning over generations is not a panacea to rescue stress sensitivity in offspring. For many species, there were no benefits of parental conditioning. Even when improved performance was observed, this waned over time within a generation or across generations and fitness declined. CGP and MGP studies identified resilient species with stress tolerant genotypes in wild populations and selected family lines. Several bivalves possess favourable stress tolerance and phenotypically plastic traits potentially associated with genetic adaptation to life in habitats where they routinely experience temperature and/or acidification stress. These traits will be important to help 'climate proof' shellfish ventures. Species that are naturally stress tolerant and those that naturally experience a broad range of environmental conditions are good candidates to provide insights into the physiological and molecular mechanisms involved in CGP and MGP. It is challenging to conduct ecologically relevant global change experiments over the long times commensurate with the pace of changing climate. As a result, many studies present stressors in a shock-type exposure at rates much faster than projected scenarios. With more gradual stressor introduction over longer experimental durations and in context with conditions species are currently acclimatized and/or adapted to, the outcomes for sensitive species might differ. We highlight the importance to understand primordial germ cell development and the timing of gametogenesis with respect to stressor exposure. Although multigenerational exposure to global change stressors currently appears limited as a universal tool to rescue species in the face of changing climate, natural proxies of future conditions (upwelling zones, CO2 vents, naturally warm habitats) show that phenotypic adjustment and/or beneficial genetic selection is possible for some species, indicating complex plasticity-adaptation interactions.
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Affiliation(s)
- Maria Byrne
- School of Medical Sciences, The University of Sydney, Sydney, NSW, Australia
- School of Life and Environmental Sciences, The University of Sydney, Sydney, NSW, Australia
| | - Shawna A Foo
- Center for Global Discovery and Conservation Science, Arizona State University, Tempe, AZ, USA
| | - Pauline M Ross
- School of Life and Environmental Sciences, The University of Sydney, Sydney, NSW, Australia
| | - Hollie M Putnam
- Department of Biological Sciences, University of Rhode Island, Kingston, RI, USA
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28
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Zhao L, Liu L, Liu B, Liang J, Lu Y, Yang F. Antioxidant responses to seawater acidification in an invasive fouling mussel are alleviated by transgenerational acclimation. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 217:105331. [PMID: 31683207 DOI: 10.1016/j.aquatox.2019.105331] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 10/03/2019] [Accepted: 10/09/2019] [Indexed: 06/10/2023]
Abstract
Ocean acidification and marine biofouling, which may interact in the future, pose two major threats to global coastal ecosystems. Yet, the fate of highly invasive fouling species in a rapidly acidifying ocean remains poorly understood, due to lack of information on multigenerational consequences at different levels of biological organization. Here, we investigated antioxidant responses of the mussel, Musculista senhousia, a swiftly spreading invasive fouling species in global coastal waters, following transgenerational exposure to elevated pCO2. In the face of seawater acidification, M. senhousia without a prior history of transgenerational exposure to elevated pCO2 showed resistance to lipid peroxidation, but significantly increased activities of antioxidant enzymes, including superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx), indicated oxidative stress responses. However, enhanced transgenerational immunity occurred, as exemplified by observations that mussels originating from parents exposed to elevated pCO2 exhibited significantly lower activities of SOD, CAT and GPx in comparison to those spawn from parents exposed to ambient pCO2. Rapid transgenerational acclimation of M. senhousia in terms of reduced oxidative stress responses can likely be linked to the enhanced capacity of maintaining acid-base homeostasis previously demonstrated. These findings provide the first evidence of transgenerational plasticity at the biochemical level in highly invasive fouling bivalve species, and represent a step forward in understanding how they respond and acclimate in an acidifying ocean.
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Affiliation(s)
- Liqiang Zhao
- College of Fisheries, Guangdong Ocean University, Zhanjiang, China; Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan.
| | - Lei Liu
- Shenzhen Test & Service Co., Ltd., Shenzhen, China
| | - Baozhan Liu
- CNOOC EnerTech-Safety & Environmental Protection Co., Tianjin, China
| | - Jian Liang
- Department of Fisheries, Tianjin Agricultural University, Tianjin, China
| | - Yanan Lu
- College of Life Science and Fisheries, Dalian Ocean University, Dalian, China
| | - Feng Yang
- College of Life Science and Fisheries, Dalian Ocean University, Dalian, China
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29
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Zhao L, Liu B, An W, Deng Y, Lu Y, Liu B, Wang L, Cong Y, Sun X. Assessing the impact of elevated pCO 2 within and across generations in a highly invasive fouling mussel (Musculista senhousia). THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 689:322-331. [PMID: 31277000 DOI: 10.1016/j.scitotenv.2019.06.466] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 06/26/2019] [Accepted: 06/27/2019] [Indexed: 06/09/2023]
Abstract
Marine biofouling by the swiftly spreading invasive mussel (Musculista senhousia) has caused serious ecological and economic consequences in the global coastal waters. However, the fate of this highly invasive fouling species in a rapidly acidifying ocean remains unknown. Here, we demonstrated the impacts of ocean acidification within and across generations, to understand whether M. senhousia has the capacity to acclimate to changing ocean conditions. During the gonadal development, exposure of mussels to elevated pCO2 caused significant decreases of survival, growth performance and condition index, and shifted the whole-organism energy budget by inflating energy expenses to fuel compensatory processes, eventually impairing the success of spawning. Yet, rapid transgenerational acclimation occurred during the early life history stage and persisted into adulthood. Eggs spawned from CO2-exposed mussels were significantly bigger compared with those from non-CO2-exposed mussels, indicating increased maternal provisioning into eggs and hence conferring larvae resilience under harsh conditions. Larvae with a prior history of transgenerational exposure to elevated pCO2 developed faster and had a higher survival than those with no prior history of CO2 exposure. Transgenerational exposure significantly increased the number of larvae completing metamorphosis. While significant differences in shell growth were no longer observed during juvenile nursery and adult grow-out, transgenerationally exposed mussels displayed improved survival in comparison to non-transgenerationally exposed mussels. Metabolic plasticity arose following transgenerational acclimation, generating more energy available for fitness-related functions. Overall, the present study demonstrates the remarkable ability of M. senhousia to respond plastically and acclimate rapidly to changing ocean conditions.
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Affiliation(s)
- Liqiang Zhao
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan; Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China.
| | - Baozhan Liu
- CNOOC EnerTech-Safety & Environmental Protection Co., Tianjin 300457, China
| | - Wei An
- CNOOC EnerTech-Safety & Environmental Protection Co., Tianjin 300457, China
| | - Yuewen Deng
- Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China
| | - Yanan Lu
- College of Life Science and Fisheries, Dalian Ocean University, Dalian 116023, China
| | - Bingxin Liu
- Navigation College, Dalian Maritime University, Dalian 116026, China
| | - Li Wang
- College of Life Science and Fisheries, Dalian Ocean University, Dalian 116023, China
| | - Yuting Cong
- College of Life Science and Fisheries, Dalian Ocean University, Dalian 116023, China
| | - Xin Sun
- Dalian Zhangzidao Fishery Group Co. Ltd., Dalian 116002, China
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30
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Fallet M, Luquet E, David P, Cosseau C. Epigenetic inheritance and intergenerational effects in mollusks. Gene 2019; 729:144166. [PMID: 31678264 DOI: 10.1016/j.gene.2019.144166] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 10/08/2019] [Accepted: 10/09/2019] [Indexed: 01/01/2023]
Abstract
Recent insights in evolutionary biology have shed light on epigenetic variation that interacts with genetic variation to convey heritable information. An important characteristic of epigenetic changes is that they can be produced in response to environmental cues and passed on to later generations, potentially facilitating later genetic adaptation. While our understanding of epigenetic mechanisms in vertebrates is rapidly growing, our knowledge about invertebrates remains lower, or is restricted to model organisms. Mollusks in particular, are a large group of invertebrates, with several species important for ecosystem function, human economy and health. In this review, we attempt to summarize the literature on epigenetic and intergenerational studies in mollusk species, with potential importance for adaptive evolution. Our review highlights that two molecular bearers of epigenetic information, DNA methylation and histone modifications, are key features for development in mollusk species, and both are sensitive to environmental conditions to which developing individuals are exposed. Further, although studies are still scarce, various environmental factors (e.g. predator cues, chemicals, parasites) can induce intergenerational effects on the phenotype (life-history traits, morphology, behaviour) of several mollusk taxa. More work is needed to better understand whether environmentally-induced changes in DNA methylation and histone modifications have phenotypic impacts, whether they can be inherited through generations and their role in intergenerational effects on phenotype. Such work may bring insights into the potential role of epigenetic in adaptation and evolution in mollusks.
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Affiliation(s)
- Manon Fallet
- IHPE, Univ. Montpellier, CNRS, Ifremer, Univ. Perpignan Via Domitia, Perpignan, France
| | - Emilien Luquet
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR5023 LEHNA, F-69622 Villeurbanne, France
| | - Patrice David
- CEFE, UMR 5175, CNRS, Université de Montpellier, Université Paul-Valéry Montpellier, IRD, EPHE, Montpellier, France
| | - Céline Cosseau
- IHPE, Univ. Montpellier, CNRS, Ifremer, Univ. Perpignan Via Domitia, Perpignan, France.
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31
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Uthicke S, Deshpande NP, Liddy M, Patel F, Lamare M, Wilkins MR. Little evidence of adaptation potential to ocean acidification in sea urchins living in "Future Ocean" conditions at a CO 2 vent. Ecol Evol 2019; 9:10004-10016. [PMID: 31534709 PMCID: PMC6745858 DOI: 10.1002/ece3.5563] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 07/25/2019] [Accepted: 07/28/2019] [Indexed: 12/20/2022] Open
Abstract
Ocean acidification (OA) can be detrimental to calcifying marine organisms, with stunting of invertebrate larval development one of the most consistent responses. Effects are usually measured by short-term, within-generation exposure, an approach that does not consider the potential for adaptation. We examined the genetic response to OA of larvae of the tropical sea urchin Echinometra sp. C. raised on coral reefs that were either influenced by CO2 vents (pH ~ 7.9, future OA condition) or nonvent control reefs (pH 8.2). We assembled a high quality de novo transcriptome of Echinometra embryos (8 hr) and pluteus larvae (48 hr) and identified 68,056 SNPs. We tested for outlier SNPs and functional enrichment in embryos and larvae raised from adults from the control or vent sites. Generally, highest F ST values in embryos were observed between sites (intrinsic adaptation, most representative of the gene pool in the spawned populations). This comparison also had the highest number of outlier loci (40). In the other comparisons, classical adaptation (comparing larvae with adults from the control transplanted to either the control or vent conditions) and reverse adaptation (larvae from the vent site returned to the vent or explanted at the control), we only observed modest numbers of outlier SNPs (6-19) and only enrichment in two functional pathways. Most of the outliers detected were silent substitutions without adaptive potential. We conclude that there is little evidence of realized adaptation potential during early development, while some potential (albeit relatively low) exists in the intrinsic gene pool after more than one generation of exposure.
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Affiliation(s)
- Sven Uthicke
- Australian Institute of Marine ScienceTownsvilleQldAustralia
| | - Nandan P. Deshpande
- Systems Biology InitiativeSchool of Biotechnology and Biomolecular SciencesUniversity of New South WalesSydneyNSWAustralia
| | - Michelle Liddy
- Department of Marine ScienceUniversity of OtagoDunedinNew Zealand
| | - Frances Patel
- Australian Institute of Marine ScienceTownsvilleQldAustralia
| | - Miles Lamare
- Department of Marine ScienceUniversity of OtagoDunedinNew Zealand
| | - Marc R. Wilkins
- Systems Biology InitiativeSchool of Biotechnology and Biomolecular SciencesUniversity of New South WalesSydneyNSWAustralia
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32
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Yan X, Nie H, Huo Z, Ding J, Li Z, Yan L, Jiang L, Mu Z, Wang H, Meng X, Chen P, Zhou M, Rbbani MG, Liu G, Li D. Clam Genome Sequence Clarifies the Molecular Basis of Its Benthic Adaptation and Extraordinary Shell Color Diversity. iScience 2019; 19:1225-1237. [PMID: 31574780 PMCID: PMC6831834 DOI: 10.1016/j.isci.2019.08.049] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 06/05/2019] [Accepted: 08/27/2019] [Indexed: 11/04/2022] Open
Abstract
Ruditapes philippinarum is an economically important bivalve with remarkable diversity in its shell coloration patterns. In this study, we sequenced the whole genome of the Manila clam and investigated the molecular basis of its adaptation to hypoxia, acidification, and parasite stress with transcriptome sequencing and an RNA sequence analysis of different tissues and developmental stages to clarify these major issues. A number of immune-related gene families are expanded in the R. philippinarum genome, such as TEP, C3, C1qDC, Hsp70, SABL, and lysozyme, which are potentially important for its stress resistance and adaptation to a coastal benthic life. The transcriptome analyses demonstrated the dynamic and orchestrated specific expression of numerous innate immune-related genes in response to experimental challenge with pathogens. These findings suggest that the expansion of immune- and stress-related genes may play vital roles in resistance to adverse environments and has a profound effect on the clam's adaptation to benthic life. We present a new genome assembly of the Manila clam Ruditapes philippinarum Analysis of gene family expansions and transcriptome characterization were conducted Tyr and mitf genes were potentially involved in shell color patterns of Manila clam Expansion of GPCRs and immune-related genes were found in R. philippinarum
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Affiliation(s)
- Xiwu Yan
- Engineering and Technology Research Center of Shellfish Breeding in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China.
| | - Hongtao Nie
- Engineering and Technology Research Center of Shellfish Breeding in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China.
| | - Zhongming Huo
- Engineering and Technology Research Center of Shellfish Breeding in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China
| | - Jianfeng Ding
- Engineering and Technology Research Center of Shellfish Breeding in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China
| | - Zhenzhen Li
- Novogene Bioinformatics Institute, Beijing 100083, China
| | - Lulu Yan
- Engineering and Technology Research Center of Shellfish Breeding in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China
| | - Liwen Jiang
- Engineering and Technology Research Center of Shellfish Breeding in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China
| | - Zhengqiang Mu
- Engineering and Technology Research Center of Shellfish Breeding in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China
| | - Huamin Wang
- Engineering and Technology Research Center of Shellfish Breeding in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China
| | - Xiangyu Meng
- Engineering and Technology Research Center of Shellfish Breeding in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China
| | - Peng Chen
- Engineering and Technology Research Center of Shellfish Breeding in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China
| | - Mengyan Zhou
- Novogene Bioinformatics Institute, Beijing 100083, China
| | - Md Golam Rbbani
- Engineering and Technology Research Center of Shellfish Breeding in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China
| | - Guangjian Liu
- Novogene Bioinformatics Institute, Beijing 100083, China.
| | - Dongdong Li
- Engineering and Technology Research Center of Shellfish Breeding in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China
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33
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Zhao L, Shirai K, Murakami-Sugihara N, Higuchi T, Sakamoto TT, Miyajima T, Tanaka K. Retrospective monitoring of salinity in coastal waters with mussel shells. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 671:666-675. [PMID: 30939319 DOI: 10.1016/j.scitotenv.2019.03.405] [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: 02/20/2019] [Revised: 03/25/2019] [Accepted: 03/25/2019] [Indexed: 06/09/2023]
Abstract
Sea surface salinity (SSS) is a key parameter to understand and predict many physical, chemical and biological processes in dynamic coastal environments. Yet, in many regions, instrumental measurements are spatially sparse and insufficiently long, hindering our ability to document changes, causes, and consequences of SSS across different time scales. Therefore, there is an need to develop a robust proxy to extend SSS records back in time. Here, we test whether SSS can be reconstructed reliably and quantitatively from shell oxygen isotopic ratios (δ18Oshell) of the mussel Mytilus galloprovincialis (Lamarck, 1819) in Otsuchi Bay, Northern Japan. δ18Oshell ratios vary spatially and temporally and exhibit strong linear correlations with both sea surface temperature (SST) and SSS measurements, indicating that the composite signal recorded by δ18Oshell measurably responds to variations in both parameters. By combining contemporaneous variations of SST and δ18Oshell, SSS records encoded into mussel shells are deconvolved that significantly correlate with in situ SSS values. To further validate the robustness of δ18Oshell as a quantitative SSS proxy, high-resolution and temporally aligned time-series of δ18Oshell-derived SSS are reconstructed that are highly synchronous with the instrumental records. In particular, two lowered SSS scenarios occur concomitantly with periods of the summer monsoon and typhoon events. δ18Oshell-derived SSS time-series are also comparable to those from numerical modeling. In conclusion, our findings demonstrate that mussel δ18Oshell signatures can be used as a useful tool to construct high-resolution records of SSS in the coastal regions.
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Affiliation(s)
- Liqiang Zhao
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan.
| | - Kotaro Shirai
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan
| | | | - Tomihiko Higuchi
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan
| | - Takashi T Sakamoto
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan
| | - Toshihiro Miyajima
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan
| | - Kiyoshi Tanaka
- Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba 277-8564, Japan
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34
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Kong H, Jiang X, Clements JC, Wang T, Huang X, Shang Y, Chen J, Hu M, Wang Y. Transgenerational effects of short-term exposure to acidification and hypoxia on early developmental traits of the mussel Mytilus edulis. MARINE ENVIRONMENTAL RESEARCH 2019; 145:73-80. [PMID: 30833041 DOI: 10.1016/j.marenvres.2019.02.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 02/17/2019] [Accepted: 02/18/2019] [Indexed: 06/09/2023]
Abstract
Transgenerational effects of multiple stressors on marine organisms are emerging environmental themes. We thus experimentally tested for transgenerational effects of seawater acidification and hypoxia on the early development traits of the mussel Mytilus edulis. Fertilization rate, embryo deformity rate, and larval shell length were negatively impacted by acidification, while hypoxia had little effect except for increasing deformity rates under control pH conditions. Offspring from low pH/O2 parents were less negatively affected by low pH/O2 conditions than offspring from control parents; however, low pH/O2 conditions still negatively affected developmental traits in offspring from acclimated parents compared to control seawater conditions. Our results demonstrate that experimental seawater acidification and hypoxia can adversely affect early developmental traits of M. edulis and that parental exposure can only partially alleviate these impacts. If experimental observations hold true in nature, it is unlikely that parental exposure will confer larval tolerance to ocean acidification for M. edulis.
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Affiliation(s)
- Hui Kong
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai, 201306, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai, 201306, China
| | - Xiaoyu Jiang
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai, 201306, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai, 201306, China
| | - Jeff C Clements
- Department of Biology, Norwegian University of Science and Technology, Realfagbygget, Høgskoleringen 5, NO-7491, Trondheim, Norway
| | - Ting Wang
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai, 201306, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai, 201306, China
| | - Xizhi Huang
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai, 201306, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai, 201306, China
| | - Yueyong Shang
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai, 201306, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai, 201306, China
| | - Jianfang Chen
- Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China
| | - Menghong Hu
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai, 201306, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai, 201306, China
| | - Youji Wang
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai, 201306, China; Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, 999 Huchenghuan Road, Shanghai, 201306, China; International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, China.
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35
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Cong M, Wu H, Cao T, Ji C, Lv J. Effects of ammonia nitrogen on gill mitochondria in clam Ruditapes philippinarum. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2019; 65:46-52. [PMID: 30529996 DOI: 10.1016/j.etap.2018.12.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 11/07/2018] [Accepted: 12/02/2018] [Indexed: 06/09/2023]
Abstract
Ammonia nitrogen exposure has been found to significantly increase the early apoptosis rates of gill cells, affect the contents of ATP and disturb expressions of calcium-related genes in clam Ruditapes philippinarum. Mitochondria are the centers for energy production, initiation of apoptosis and calcium signal regulation. It is hypothesized that gill mitochondrion is a target organelle for the ammonia nitrogen. Thus, ATP metabolism together with ATP-consuming functions would be interfered by ammonia exposure. In the present study, mitochondrial transmembrane potential (MTP), ATPase activities, gill functions in clearance and respiration, and histological changes were detected to characterize the effects of ammonia to the gill mitochondria in clam R. philippinarum. Results indicated that ammonia exposure led to significant decreases in MTP, Ca2+-ATPase activity and clearance rates. However, different concentrations of ammonia nitrogen induced different variations on H+, K+-ATPase activity and respiration rates. Histological observation revealed that subacute exposure of ammonia damaged the microstructure of gill tissues. Therefore, ammonia exposure dramatically damaged the normal structure and function of mitochondria, resulting in irreversible damage in energy formation and supply. In addition, it affected Ca2+ and K+ metabolism and inhibited food intake and respiration in clam R. philippinarum.
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Affiliation(s)
- Ming Cong
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Provincial Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China
| | - Huifeng Wu
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Provincial Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, PR China.
| | - Tengfei Cao
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Provincial Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China; Biology School of Yantai University, Yantai 264005, PR China
| | - Chenglong Ji
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Provincial Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, PR China
| | - Jiasen Lv
- Biology School of Yantai University, Yantai 264005, PR China
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36
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Jiahuan R, Wenhao S, Xiaofan G, Wei S, Shanjie Z, Maolong H, Haifeng W, Guangxu L. Ocean Acidification Impairs Foraging Behavior by Interfering With Olfactory Neural Signal Transduction in Black Sea Bream, Acanthopagrus schlegelii. Front Physiol 2018; 9:1592. [PMID: 30515101 PMCID: PMC6255911 DOI: 10.3389/fphys.2018.01592] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 10/24/2018] [Indexed: 01/21/2023] Open
Abstract
In recent years, ocean acidification (OA) caused by oceanic absorption of anthropogenic carbon dioxide (CO2) has drawn worldwide concern over its physiological and ecological effects on marine organisms. However, the behavioral impacts of OA and especially the underlying physiological mechanisms causing these impacts are still poorly understood in marine species. Therefore, in the present study, the effects of elevated pCO2 on foraging behavior, in vivo contents of two important neurotransmitters, and the expression of genes encoding key modulatory enzymes from the olfactory transduction pathway were investigated in the larval black sea bream. The results showed that larval sea breams (length of 4.71 ± 0.45 cm) reared in pCO2 acidified seawater (pH at 7.8 and 7.4) for 15 days tend to stall longer at their acclimated zone and swim with a significant slower velocity in a more zigzag manner toward food source, thereby taking twice the amount of time than control (pH at 8.1) to reach the food source. These findings indicate that the foraging behavior of the sea bream was significantly impaired by ocean acidification. In addition, compared to a control, significant reductions in the in vivo contents of γ-aminobutyric acid (GABA) and Acetylcholine (ACh) were detected in ocean acidification-treated sea breams. Furthermore, in the acidified experiment groups, the expression of genes encoding positive regulators, the olfaction-specific G protein (Golf) and the G-protein signaling 2 (RGS2) and negative regulators, the G protein-coupled receptor kinase (GRK) and arrestin in the olfactory transduction pathway were found to be significantly suppressed and up-regulated, respectively. Changes in neurotransmitter content and expression of olfactory transduction related genes indicate a significant disruptive effect caused by OA on olfactory neural signal transduction, which might reveal the underlying cause of the hampered foraging behavior.
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Affiliation(s)
- Rong Jiahuan
- College of Animal Science, Zhejiang University, Hangzhou, China
| | - Su Wenhao
- College of Animal Science, Zhejiang University, Hangzhou, China
| | - Guan Xiaofan
- College of Animal Science, Zhejiang University, Hangzhou, China
| | - Shi Wei
- College of Animal Science, Zhejiang University, Hangzhou, China
| | - Zha Shanjie
- College of Animal Science, Zhejiang University, Hangzhou, China
| | - He Maolong
- Lucta (Guangzhou) Flavours Co., Ltd., Guangzhou, China
| | - Wang Haifeng
- College of Animal Science, Zhejiang University, Hangzhou, China
| | - Liu Guangxu
- College of Animal Science, Zhejiang University, Hangzhou, China
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37
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Lu Y, Wang L, Wang L, Cong Y, Yang G, Zhao L. Deciphering carbon sources of mussel shell carbonate under experimental ocean acidification and warming. MARINE ENVIRONMENTAL RESEARCH 2018; 142:141-146. [PMID: 30337051 DOI: 10.1016/j.marenvres.2018.10.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 10/11/2018] [Accepted: 10/12/2018] [Indexed: 06/08/2023]
Abstract
Ocean acidification and warming is widely reported to affect the ability of marine bivalves to calcify, but little is known about the underlying mechanisms. In particular, the response of their calcifying fluid carbonate chemistry to changing seawater carbonate chemistry remains poorly understood. The present study deciphers sources of the dissolved inorganic carbon (DIC) in the calcifying fluid of the blue mussel (Mytilus edulis) reared at two pH (8.1 and 7.7) and temperature (16 and 22 °C) levels for five weeks. Stable carbon isotopic ratios of seawater DIC, mussel soft tissues and shells were measured to determine the relative contribution of seawater DIC and metabolically generated carbon to the internal calcifying DIC pool. At pH 8.1, the percentage of seawater DIC synthesized into shell carbonate decreases slightly from 83.8% to 80.3% as temperature increases from 16 to 22 °C. Under acidified conditions, estimates of percent seawater DIC incorporation decreases clearly to 65.6% at 16 °C and to 62.3% at 22 °C, respectively. These findings indicate that ongoing ocean acidification and warming may interfere with the calcification physiology of M. edulis through interfering with its ability to efficiently extract seawater DIC to the calcifying front.
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Affiliation(s)
- Yanan Lu
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, China
| | - Li Wang
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, China
| | - Lianshun Wang
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, China
| | - Yuting Cong
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, China
| | - Guojun Yang
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, China
| | - Liqiang Zhao
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, 116023, China; Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba, 277-8564, Japan; Institute of Geosciences, University of Mainz, Mainz, 55128, Germany.
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38
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Zhao L, Milano S, Walliser EO, Schöne BR. Bivalve shell formation in a naturally CO 2-enriched habitat: Unraveling the resilience mechanisms from elemental signatures. CHEMOSPHERE 2018; 203:132-138. [PMID: 29614406 DOI: 10.1016/j.chemosphere.2018.03.180] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 03/21/2018] [Accepted: 03/27/2018] [Indexed: 06/08/2023]
Abstract
Marine bivalves inhabiting naturally pCO2-enriched habitats can likely tolerate high levels of acidification. Consequently, elucidating the mechanisms behind such resilience can help to predict the fate of this economically and ecologically important group under near-future scenarios of CO2-driven ocean acidification. Here, we assess the effects of four environmentally realistic pCO2 levels (900, 1500, 2900 and 6600 μatm) on the shell production rate of Mya arenaria juveniles originating from a periodically pCO2-enriched habitat (Kiel Fjord, Western Baltic Sea). We find a significant decline in the rate of shell growth as pCO2 increases, but also observe unchanged shell formation rates at moderate pCO2 levels of 1500 and 2900 μatm, the latter illustrating the capacity of the juveniles to partially mitigate the impact of high pCO2. Using recently developed geochemical tracers we show that M. arenaria exposed to a natural pCO2 gradient from 900 to 2900 μatm can likely concentrate HCO3- in the calcifying fluid through the exchange of HCO3-/Cl- and simultaneously maintain the pH homeostasis through active removal of protons, thereby being able to sustain the rate of shell formation to a certain extent. However, with increasing pCO2 beyond natural maximum the bivalves may have limited capacity to compensate for changes in the calcifying fluid chemistry, showing significant shell growth reduction. Findings of the present study may pave the way for elucidating the underlying mechanisms by which marine bivalves acclimate and adapt to high seawater pCO2.
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Affiliation(s)
- Liqiang Zhao
- Institute of Geosciences, University of Mainz, Mainz 55128, Germany; Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba 277-8564, Japan.
| | - Stefania Milano
- Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Leipzig 04103, Germany
| | - Eric O Walliser
- Institute of Geosciences, University of Mainz, Mainz 55128, Germany
| | - Bernd R Schöne
- Institute of Geosciences, University of Mainz, Mainz 55128, Germany
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39
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Borges FO, Figueiredo C, Sampaio E, Rosa R, Grilo TF. Transgenerational deleterious effects of ocean acidification on the reproductive success of a keystone crustacean (Gammarus locusta). MARINE ENVIRONMENTAL RESEARCH 2018; 138:55-64. [PMID: 29692336 DOI: 10.1016/j.marenvres.2018.04.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 04/15/2018] [Accepted: 04/16/2018] [Indexed: 06/08/2023]
Abstract
Ocean acidification (OA) poses a global threat to marine biodiversity. Notwithstanding, marine organisms may maintain their performance under future OA conditions, either through acclimation or evolutionary adaptation. Surprisingly, the transgenerational effects of high CO2 exposure in crustaceans are still poorly understood. For the first time, the present study investigated the transgenerational effect of OA, from hatching to maturity, of a key amphipod species (Gammarus locusta). Negative transgenerational effects were observed on survival of the acidified lineage, resulting in significant declines (10-15%) compared to the control groups in each generation. Mate-guarding duration was also significantly reduced under high CO2 and this effect was not alleviated by transgenerational acclimation, indicating that precopulatory behaviours can be disturbed under a future high CO2 scenario. Although OA may initially stimulate female investment, transgenerational exposure led to a general decline in egg number and fecundity. Overall, the present findings suggest a potential fitness reduction of natural populations of G. locusta in a future high CO2 ocean, emphasizing the need of management tools towards species' sustainability.
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Affiliation(s)
- Francisco O Borges
- MARE - Marine and Environmental Sciences Centre, Laboratório Marítimo da Guia, Faculdade de Ciências da Universidade de Lisboa, 2750-374, Cascais, Portugal.
| | - Cátia Figueiredo
- MARE - Marine and Environmental Sciences Centre, Laboratório Marítimo da Guia, Faculdade de Ciências da Universidade de Lisboa, 2750-374, Cascais, Portugal
| | - Eduardo Sampaio
- MARE - Marine and Environmental Sciences Centre, Laboratório Marítimo da Guia, Faculdade de Ciências da Universidade de Lisboa, 2750-374, Cascais, Portugal
| | - Rui Rosa
- MARE - Marine and Environmental Sciences Centre, Laboratório Marítimo da Guia, Faculdade de Ciências da Universidade de Lisboa, 2750-374, Cascais, Portugal
| | - Tiago F Grilo
- MARE - Marine and Environmental Sciences Centre, Laboratório Marítimo da Guia, Faculdade de Ciências da Universidade de Lisboa, 2750-374, Cascais, Portugal
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