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Incardona JP, Linbo TL, Cameron JR, Scholz NL. Structure-activity relationships for alkyl-phenanthrenes support two independent but interacting synergistic models for PAC mixture potency. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 918:170544. [PMID: 38309367 DOI: 10.1016/j.scitotenv.2024.170544] [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: 11/21/2023] [Revised: 01/19/2024] [Accepted: 01/27/2024] [Indexed: 02/05/2024]
Abstract
Multiple lines of evidence at whole animal, cellular and molecular levels implicate polycyclic aromatic compounds (PACs) with three rings as drivers of crude oil toxicity to developing fish. Phenanthrene (P0) and its alkylated homologs (C1- through C4-phenanthrenes) comprise the most prominent subfraction of tricyclic PACs in crude oils. Among this family, P0 has been studied intensively, with more limited detail available for the C4-phenanthrene 1-methyl-7-isopropyl-phenanthrene (1-M,7-IP, or retene). While both compounds are cardiotoxic, P0 impacts embryonic cardiac function and development through direct blockade of K+ and Ca2+ currents that regulate cardiomyocyte contractions. In contrast, 1-M,7-IP dysregulates aryl hydrocarbon receptor (AHR) activation in developing ventricular cardiomyocytes. Although no other compounds have been assessed in detail across the larger family of alkylated phenanthrenes, increasing alkylation might be expected to shift phenanthrene family member activity from K+/Ca2+ ion current blockade to AHR activation. Using embryos of two distantly related fish species, zebrafish and Atlantic haddock, we tested 14 alkyl-phenanthrenes in both acute and latent developmental cardiotoxicity assays. All compounds were cardiotoxic, and effects were resolved into impacts on multiple, highly specific aspects of heart development or function. Craniofacial defects were clearly linked to developmental cardiotoxicity. Based on these findings, we suggest a novel framework to delineate the developmental toxicity of petrogenic PAC mixtures in fish, which incorporates multi-mechanistic pathways that produce interactive synergism at the organ level. In addition, relationships among measured embryo tissue concentrations, cytochrome P4501A mRNA induction, and cardiotoxic responses suggest a two-compartment toxicokinetic model that independently predicts high potency of PAC mixtures through classical metabolic synergism. These two modes of synergism, specific to the sub-fraction of phenanthrenes, are sufficient to explain the high embryotoxic potency of crude oils, independent of as-yet unmeasured compounds in these complex environmental mixtures.
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Affiliation(s)
- John P Incardona
- Environmental and Fisheries Science Division, Northwest Fisheries Science Center, National Marine Fisheries Service, NOAA Fisheries, Seattle, WA, USA.
| | - Tiffany L Linbo
- Environmental and Fisheries Science Division, Northwest Fisheries Science Center, National Marine Fisheries Service, NOAA Fisheries, Seattle, WA, USA
| | - James R Cameron
- Saltwater, Inc., Under Contract to Northwest Fisheries Science Center, National Oceanic and Atmospheric Administration, Seattle, WA, USA
| | - Nathaniel L Scholz
- Environmental and Fisheries Science Division, Northwest Fisheries Science Center, National Marine Fisheries Service, NOAA Fisheries, Seattle, WA, USA
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2
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Akmal Y, Muliari M, Humairani R, Zulfahmi I, Burhanuddin AI, Budimawan B, Batubara AS. Species authentication of Tor spp. (family Cyprinidae) in Indonesia based on osteocranium structure and biometric data. ZOOL ANZ 2022. [DOI: 10.1016/j.jcz.2022.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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3
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Transcriptome profiling reveals exposure to predicted end-of-century ocean acidification as a stealth stressor for Atlantic cod larvae. Sci Rep 2019; 9:16908. [PMID: 31729401 PMCID: PMC6858462 DOI: 10.1038/s41598-019-52628-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 10/17/2019] [Indexed: 01/12/2023] Open
Abstract
Ocean acidification (OA), a direct consequence of increasing atmospheric CO2 concentration dissolving in ocean waters, is impacting many fish species. Little is known about the molecular mechanisms underlying the observed physiological impacts in fish. We used RNAseq to characterize the transcriptome of 3 different larval stages of Atlantic cod (Gadus morhua) exposed to simulated OA at levels (1179 µatm CO2) representing end-of-century predictions compared to controls (503 µatm CO2), which were shown to induce tissue damage and elevated mortality in G. morhua. Only few genes were differentially expressed in 6 and 13 days-post-hatching (dph) (3 and 16 genes, respectively), during a period when maximal mortality as a response to elevated pCO2 occurred. At 36 dph, 1413 genes were differentially expressed, most likely caused by developmental asynchrony between the treatment groups, with individuals under OA growing faster. A target gene analysis revealed only few genes of the universal and well-defined cellular stress response to be differentially expressed. We thus suggest that predicted ocean acidification levels constitute a "stealth stress" for early Atlantic cod larvae, with a rapid breakdown of cellular homeostasis leading to organismal death that was missed even with an 8-fold replication implemented in this study.
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Hansen BH, Salaberria I, Read KE, Wold PA, Hammer KM, Olsen AJ, Altin D, Øverjordet IB, Nordtug T, Bardal T, Kjørsvik E. Developmental effects in fish embryos exposed to oil dispersions - The impact of crude oil micro-droplets. MARINE ENVIRONMENTAL RESEARCH 2019; 150:104753. [PMID: 31284099 DOI: 10.1016/j.marenvres.2019.104753] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 06/28/2019] [Accepted: 07/02/2019] [Indexed: 06/09/2023]
Abstract
During accidental crude oil spills and permitted discharges of produced water into the marine environment, a large fraction of naturally occurring oil components will be contained in micron-sized oil droplets. Toxicity is assumed to be associated with the dissolved fraction of oil components, however the potential contribution of oil droplets to toxicity is currently not well known. In the present work we wanted to evaluate the contribution of oil droplets to effects on normal development of Atlantic cod (Gadus morhua) through exposing embryos for 96 h to un-filtered (dispersions containing droplets) and filtered (water soluble fractions) dispersions in a flow-through system at dispersion concentrations ranging from 0.14 to 4.34 mg oil/L. After exposure, the embryos were kept in clean seawater until hatch when survival, development and morphology were assessed. The experiment was performed at two different stages of embryonic development to cover two potentially sensitive stages (gastrulation and organogenesis). Exposure of cod embryos to crude oil dispersions caused acute and delayed toxicity, including manifestation of morphological deformations in hatched larvae. Oil droplets appear to contribute to some of the observed effects including mortality, larvae condition (standard length, body surface, and yolk sac size), spinal deformations as well as alterations in craniofacial and jaw development. The timing of exposure may be essential for the development of effects as higher acute mortality was observed when embryos were exposed from the start of gastrulation (Experiment 1) than when exposed during organogenesis (Experiment 2). Even though low mortality was observed when exposed during organogenesis, concentration-dependent mortality was observed during recovery.
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Affiliation(s)
| | - Iurgi Salaberria
- SINTEF Ocean AS, Environment and New Resources, Trondheim, Norway; Norwegian University of Science and Technology, Department of Biology, Trondheim, Norway
| | - Kari Ella Read
- SINTEF Ocean AS, Environment and New Resources, Trondheim, Norway
| | - Per Arvid Wold
- Norwegian University of Science and Technology, Department of Biology, Trondheim, Norway
| | | | - Anders J Olsen
- Norwegian University of Science and Technology, Department of Biology, Trondheim, Norway
| | | | | | - Trond Nordtug
- SINTEF Ocean AS, Environment and New Resources, Trondheim, Norway
| | - Tora Bardal
- Norwegian University of Science and Technology, Department of Biology, Trondheim, Norway
| | - Elin Kjørsvik
- Norwegian University of Science and Technology, Department of Biology, Trondheim, Norway
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5
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Koenigstein S, Dahlke FT, Stiasny MH, Storch D, Clemmesen C, Pörtner HO. Forecasting future recruitment success for Atlantic cod in the warming and acidifying Barents Sea. GLOBAL CHANGE BIOLOGY 2018; 24:526-535. [PMID: 28755499 DOI: 10.1111/gcb.13848] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 06/09/2017] [Indexed: 06/07/2023]
Abstract
Productivity of marine fish stocks is known to be affected by environmental and ecological drivers, and global climate change is anticipated to alter recruitment success of many stocks. While the direct effects of environmental drivers on fish early life stage survival can be quantified experimentally, indirect effects in marine ecosystems and the role of adaptation are still highly uncertain. We developed an integrative model for the effects of ocean warming and acidification on the early life stages of Atlantic cod in the Barents Sea, termed SCREI (Simulator of Cod Recruitment under Environmental Influences). Experimental results on temperature and CO2 effects on egg fertilization, egg and larval survival and development times are incorporated. Calibration using empirical time series of egg production, temperature, food and predator abundance reproduces age-0 recruitment over three decades. We project trajectories of recruitment success under different scenarios and quantify confidence limits based on variation in experiments. A publicly accessible web version of the SCREI model can be run under www.oceanchange.uni-bremen.de/;SCREI. Severe reductions in average age-0 recruitment success of Barents Sea cod are projected under uncompensated warming and acidification toward the middle to end of this century. Although high population stochasticity was found, considerable rates of evolutionary adaptation to acidification and shifts in organismal thermal windows would be needed to buffer impacts on recruitment. While increases in food availability may mitigate short-term impacts, an increase in egg production achieved by stock management could provide more long-term safety for cod recruitment success. The SCREI model provides a novel integration of multiple driver effects in different life stages and enables an estimation of uncertainty associated with interindividual and ecological variation. The model thus helps to advance toward an improved empirical foundation for quantifying climate change impacts on marine fish recruitment, relevant for ecosystem-based assessments of marine systems under climate change.
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Affiliation(s)
- Stefan Koenigstein
- University of Bremen, Bremen, Germany
- Alfred Wegener Institute (AWI) Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Flemming T Dahlke
- University of Bremen, Bremen, Germany
- Alfred Wegener Institute (AWI) Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Martina H Stiasny
- GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany
- University of Kiel, Kiel, Germany
| | - Daniela Storch
- Alfred Wegener Institute (AWI) Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | | | - Hans-Otto Pörtner
- University of Bremen, Bremen, Germany
- Alfred Wegener Institute (AWI) Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
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6
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Dial TR, Hernandez LP, Brainerd EL. Morphological and functional maturity of the oral jaws covary with offspring size in Trinidadian guppies. Sci Rep 2017; 7:5771. [PMID: 28720837 PMCID: PMC5515938 DOI: 10.1038/s41598-017-06414-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 06/14/2017] [Indexed: 11/20/2022] Open
Abstract
Large size of individual offspring is routinely selected for in highly competitive environments, such as in low-predation populations of the Trinidadian guppy (Poecilia reticulata). Large guppy offspring outcompete their smaller conspecifics, but the functional mechanisms underlying this advantage are unknown. We measured jaw kinematics during benthic feeding and cranial musculoskeletal morphologies in neonates and juveniles from five populations of Trinidadian guppy and found that both kinematics and morphologies vary substantially with neonatal size. Rotation at the intramandibular joint (IMJ), but not the quadratomandibular joint (QMJ), increases with size among guppy offspring, from 11.7° in the smallest neonates to 22.9° in the largest neonates. Ossification of the cranial skeleton varies from 20% in the smallest neonates to 90% in the largest. Relative to standard length (SL; jaw tip to caudal fin base distance), the surface area of jaw-closing musculature scales with positive allometry (SL2.72) indicating that muscle growth outpaces body growth. Maximum gape also scales with positive allometry (SL1.20), indicating that larger neonates are capable of greater jaw excursions. These findings indicate that size is not the sole adaptive benefit to producing larger offspring; maturation provides a potential functional mechanism underlying the competitive advantage of large offspring size among Trinidadian guppies.
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Affiliation(s)
- T R Dial
- Department of Ecology and Evolutionary Biology, Brown University, Providence, RI, USA.
| | - L P Hernandez
- Department of Biological Sciences, The George Washington University, Washington, D.C., USA
| | - E L Brainerd
- Department of Ecology and Evolutionary Biology, Brown University, Providence, RI, USA
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7
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Development of cranial muscles in the actinopterygian fish Senegal bichir,Polypterus senegalusCuvier, 1829. J Morphol 2017; 278:450-463. [DOI: 10.1002/jmor.20636] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 10/31/2016] [Accepted: 11/27/2016] [Indexed: 11/07/2022]
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8
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Bouilliart M, Tomkiewicz J, Lauesen P, De Kegel B, Adriaens D. Musculoskeletal anatomy and feeding performance of pre-feeding engyodontic larvae of the European eel (Anguilla anguilla). J Anat 2016; 227:325-40. [PMID: 26278932 DOI: 10.1111/joa.12335] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/06/2015] [Indexed: 11/30/2022] Open
Abstract
Being part of the elopomorph group of fishes, Anguillidae species show a leptocephalus larval stage. However, due to largely unknown spawning locations and habitats of their earliest life stages, as well as their transparency, these Anguilla larvae are rarely encountered in nature. Therefore, information regarding the early life history of these larvae, including their exogenous feeding strategy and feeding performance, is rather scarce. To better understand the structural basis and functional performance of larval feeding in captivity, the functional morphology of the cranial musculoskeletal system in pre- and first-feeding engyodontic leptocephali of the European eel (Anguilla anguilla) was studied. A 3D reconstruction of the feeding apparatus (head of the leptocephali < 1 mm) was used to visualize and describe the musculoskeletal changes throughout these stages. To analyze the ontogenetic changes in the functionality of the feeding apparatus towards the active feeding phase, 3D data of joints, levers and muscles derived from the reconstructions were used to estimate bite and joint reaction forces (JRFs). Observing a maximum estimated bite force of about 65 μN (and corresponding JRFs of 260 μN), it can be hypothesized that leptocephalus larvae are functionally constrained to feed only on soft food particles. Additionally, potential prey items are size delimited, based on the theoretically estimated average gape of these larvae of about 100 μm. This hypothesis appears to be in line with recent observations of a diet consisting of small and/or gelatinous prey items (Hydrozoa, Thaliacea, Ctenophora, Polycystenia) found in the guts of euryodontic leptocephalus larvae.
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Affiliation(s)
- Mathias Bouilliart
- Research Group Evolutionary Morphology of Vertebrates, Ghent University, Ghent, Belgium
| | - Jonna Tomkiewicz
- National Institute of Aquatic Resources - Section for Marine Ecology and Oceanography, Technical University of Denmark, Charlottenlund, Denmark
| | | | - Barbara De Kegel
- Research Group Evolutionary Morphology of Vertebrates, Ghent University, Ghent, Belgium
| | - Dominique Adriaens
- Research Group Evolutionary Morphology of Vertebrates, Ghent University, Ghent, Belgium
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9
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Abstract
To our knowledge, there is no report on microRNA (miRNA) expression and their target analysis in relation to the type of the first feed and its effect on the further growth of fish. Atlantic cod (Gadus morhua) larvae have better growth and development performance when fed natural zooplankton as a start-feed, as compared with those fed typical aquaculture start-feeds. In our experiment, two groups of Atlantic cod larvae were fed reference feed (zooplankton, mostly copepods, filtered from a seawater pond) v. aquaculture feeds: enriched rotifers (Brachionus sp.) and later brine shrimp (Artemia salina). We examined the miRNA expressions of six defined developmental stages as determined and standardised by body length from first feeding for both diet groups. We found eight miRNA (miR-9, miR-19a, miR-130b, miR-146, miR-181a, miR-192, miR-206 and miR-11240) differentially expressed between the two feeding groups in at least one developmental stage. We verified the next-generation sequencing data using real-time RT-PCR. We found 397 putative targets (mRNA) to the differentially expressed miRNA; eighteen of these mRNA showed differential expression in at least one stage. The patterns of differentially expressed miRNA and their putative target mRNA were mostly inverse, but sometimes also concurrent. The predicted miRNA targets were involved in different pathways, including metabolic, phototransduction and signalling pathways. The results of this study provide new nutrigenomic information on the potential role of miRNA in mediating nutritional effects on growth during the start-feeding period in fish larvae.
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10
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Mello GCGD, Santos JED, Guimarães-Cruz RJ, Godinho AL, Godinho HP. Allometric larval growth of the bottom-dwelling catfish Lophiosilurus alexandri Steindachner, 1876 (Siluriformes: Pseudopimelodidae). NEOTROPICAL ICHTHYOLOGY 2015. [DOI: 10.1590/1982-0224-20140161] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
ABSTRACT We investigated the early life growth pattern of pacamã, Lophiosilurus alexandri , a catfish endemic to the rio São Francisco basin, Brazil. Pacamã larvae were kept in a galvanized trough for 29 days after hatching. We collected approximately 10 larvae daily (total number = 285). We obtained from each specimen the total length (independent variable) and 11 other body measurements (dependent variables). We performed linear regressions on the log-transformed data to determine the growth pattern of the body measurements and the respective inflexion point on the growth curves. Except for trunk length, trunk width and yolk sac volume, the remaining body measurements showed a positive allometric growth coefficient up to the respective IP followed by a decrease in the rate of relative growth afterwards. Although trunk width presented a positive allometric growth, no significant inflexion point was detected. The dorsal-ventral head flattening seen in the adult pacamã was quickly expressed in the larvae as indicated by the large allometric growth of head width. Maxillary barbels showed the highest growth rate. The exceptionally high growth rates of eyes and maxillary barbels and the acquired ability to capture prey (as suggested by mouth length growth) strengthened the hypothesis of growth priorities in which the most essential organs develop first.
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11
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Day SW, Higham TE, Holzman R, Van Wassenbergh S. Morphology, Kinematics, and Dynamics: The Mechanics of Suction Feeding in Fishes. Integr Comp Biol 2015; 55:21-35. [PMID: 25980568 DOI: 10.1093/icb/icv032] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Suction feeding is pervasive among aquatic vertebrates, and our understanding of the functional morphology and biomechanics of suction feeding has recently been advanced by combining experimental and modeling approaches. Key advances include the visualization of the patterns of flow in front of the mouth of a feeding fish, the measurement of pressure inside their mouth cavity, and the employment of analytical and computational models. Here, we review the key components of the morphology and kinematics of the suction-feeding system of anatomically generalized, adult ray-finned fishes, followed by an overview of the hydrodynamics involved. In the suction-feeding apparatus, a strong mechanistic link among morphology, kinematics, and the capture of prey is manifested through the hydrodynamic interactions between the suction flows and solid surfaces (the mouth cavity and the prey). It is therefore a powerful experimental system in which the ecology and evolution of the capture of prey can be studied based on first principals.
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Affiliation(s)
- Steven W Day
- *Department of Mechanical Engineering, Rochester Institute of Technology, Rochester, NY, USA; Department of Biology, University of California, Riverside, CA 92521, USA; Department of Zoology, Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel; The Inter-University Institute for Marine Sciences, Eilat 88103, Israel; Evolutionary Morphology of Vertebrates, Ghent University, Ledeganckstraat 35, B-9000 Gent, Belgium; Biology, Universiteit Antwerpen, Universiteitsplein 1, B-2610 Antwerpen, Belgium Steven.Day@RIT
| | - Timothy E Higham
- *Department of Mechanical Engineering, Rochester Institute of Technology, Rochester, NY, USA; Department of Biology, University of California, Riverside, CA 92521, USA; Department of Zoology, Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel; The Inter-University Institute for Marine Sciences, Eilat 88103, Israel; Evolutionary Morphology of Vertebrates, Ghent University, Ledeganckstraat 35, B-9000 Gent, Belgium; Biology, Universiteit Antwerpen, Universiteitsplein 1, B-2610 Antwerpen, Belgium
| | - Roi Holzman
- *Department of Mechanical Engineering, Rochester Institute of Technology, Rochester, NY, USA; Department of Biology, University of California, Riverside, CA 92521, USA; Department of Zoology, Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel; The Inter-University Institute for Marine Sciences, Eilat 88103, Israel; Evolutionary Morphology of Vertebrates, Ghent University, Ledeganckstraat 35, B-9000 Gent, Belgium; Biology, Universiteit Antwerpen, Universiteitsplein 1, B-2610 Antwerpen, Belgium *Department of Mechanical Engineering, Rochester Institute of Technology, Rochester, NY, USA; Department of Biology, University of California, Riverside, CA 92521, USA; Department of Zoology, Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel; The Inter-University Institute for Marine Sciences, Eilat 88103, Israel; Evolutionary Morphology of Vertebrates, Ghent University, Ledeganckstraat 35, B-9000 Gent, Belgium; Biology, Universiteit Antwerpen, Universiteitsplein 1, B-2610 Antwerpen, Belgium
| | - Sam Van Wassenbergh
- *Department of Mechanical Engineering, Rochester Institute of Technology, Rochester, NY, USA; Department of Biology, University of California, Riverside, CA 92521, USA; Department of Zoology, Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel; The Inter-University Institute for Marine Sciences, Eilat 88103, Israel; Evolutionary Morphology of Vertebrates, Ghent University, Ledeganckstraat 35, B-9000 Gent, Belgium; Biology, Universiteit Antwerpen, Universiteitsplein 1, B-2610 Antwerpen, Belgium *Department of Mechanical Engineering, Rochester Institute of Technology, Rochester, NY, USA; Department of Biology, University of California, Riverside, CA 92521, USA; Department of Zoology, Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel; The Inter-University Institute for Marine Sciences, Eilat 88103, Israel; Evolutionary Morphology of Vertebrates, Ghent University, Ledeganckstraat 35, B-9000 Gent, Belgium; Biology, Universiteit Antwerpen, Universiteitsplein 1, B-2610 Antwerpen, Belgium
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Bizuayehu TT, Johansen SD, Puvanendran V, Toften H, Babiak I. Temperature during early development has long-term effects on microRNA expression in Atlantic cod. BMC Genomics 2015; 16:305. [PMID: 25881242 PMCID: PMC4403832 DOI: 10.1186/s12864-015-1503-7] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 03/27/2015] [Indexed: 12/22/2022] Open
Abstract
Background Environmental temperature has serious implications in life cycle of aquatic ectotherms. Understanding the molecular mechanisms of temperature acclimation and adaptation of marine organisms is of the uttermost importance for ecology, fisheries, and aquaculture, as it allows modeling the effects of global warming on population dynamics. Regulatory molecules are major modulators of acclimation and adaptation; among them, microRNAs (miRNAs) are versatile and substantial contributors to regulatory networks of development and adaptive plasticity. However, their role in thermal plasticity is poorly known. We have asked whether the temperature and its shift during the early ontogeny (embryonic and larval development) affect the miRNA repertoire of Atlantic cod (Gadus morhua), and if thermal experience has long-term consequences in the miRNA profile. Results We characterized miRNA during different developmental stages and in juvenile tissues using next generation sequencing. We identified 389 putative miRNA precursor loci, 120 novel precursor miRNAs, and 281 mature miRNAs. Some miRNAs showed stage- or tissue-enriched expression and miRNAs, such as the miR-17 ~ 92 cluster, myomiRs (miR-206), neuromiRs (miR-9, miR-124), miR-130b, and miR-430 showed differential expression in different temperature regimes. Long-term effect of embryonic incubation temperature was revealed on expression of some miRNAs in juvenile pituitary (miR-449), gonad (miR-27c, miR-30c, and miR-200a), and liver (let-7 h, miR-7a, miR-22, miR-34c, miR-132a, miR-192, miR-221, miR-451, miR-2188, and miR-7550), but not in brain. Some of differentially expressed miRNAs in the liver were confirmed using LNA-based rt-qPCR. The effect of temperature on methylation status of selected miRNA promoter regions was mostly inconclusive. Conclusions Temperature elevation by several degrees during embryonic and larval developmental stages significantly alters the miRNA profile, both short-term and long-term. Our results suggest that a further rise in seas temperature might affect life history of Atlantic cod. Electronic supplementary material The online version of this article (doi:10.1186/s12864-015-1503-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | - Steinar D Johansen
- University of Nordland, Faculty of Biosciences and Aquaculture, Post Box 1490, 8049, Bodø, Norway. .,Arctic University of Norway, FHS, RNA Lab, Dept Med Biol, N-9037, Tromsø, Norway.
| | | | - Hilde Toften
- Nofima AS, Muninbakken 9-13, P.O. box 6122, NO, 9291, Tromsø, Norway.
| | - Igor Babiak
- University of Nordland, Faculty of Biosciences and Aquaculture, Post Box 1490, 8049, Bodø, Norway.
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Fiaz AW, Léon-Kloosterziel KM, Gort G, Schulte-Merker S, van Leeuwen JL, Kranenbarg S. Swim-training changes the spatio-temporal dynamics of skeletogenesis in zebrafish larvae (Danio rerio). PLoS One 2012; 7:e34072. [PMID: 22529905 PMCID: PMC3329525 DOI: 10.1371/journal.pone.0034072] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Accepted: 02/20/2012] [Indexed: 11/19/2022] Open
Abstract
Fish larvae experience many environmental challenges during development such as variation in water velocity, food availability and predation. The rapid development of structures involved in feeding, respiration and swimming increases the chance of survival. It has been hypothesized that mechanical loading induced by muscle forces plays a role in prioritizing the development of these structures. Mechanical loading by muscle forces has been shown to affect larval and embryonic bone development in vertebrates, but these investigations were limited to the appendicular skeleton. To explore the role of mechanical load during chondrogenesis and osteogenesis of the cranial, axial and appendicular skeleton, we subjected zebrafish larvae to swim-training, which increases physical exercise levels and presumably also mechanical loads, from 5 until 14 days post fertilization. Here we show that an increased swimming activity accelerated growth, chondrogenesis and osteogenesis during larval development in zebrafish. Interestingly, swim-training accelerated both perichondral and intramembranous ossification. Furthermore, swim-training prioritized the formation of cartilage and bone structures in the head and tail region as well as the formation of elements in the anal and dorsal fins. This suggests that an increased swimming activity prioritized the development of structures which play an important role in swimming and thereby increasing the chance of survival in an environment where water velocity increases. Our study is the first to show that already during early zebrafish larval development, skeletal tissue in the cranial, axial and appendicular skeleton is competent to respond to swim-training due to increased water velocities. It demonstrates that changes in water flow conditions can result into significant spatio-temporal changes in skeletogenesis.
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Affiliation(s)
- Ansa W Fiaz
- Experimental Zoology Group, Department of Animal Sciences, Wageningen University and Research Centre, Wageningen, The Netherlands.
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Peck MA, Huebert KB, Llopiz JK. Intrinsic and Extrinsic Factors Driving Match–Mismatch Dynamics During the Early Life History of Marine Fishes. ADV ECOL RES 2012. [DOI: 10.1016/b978-0-12-398315-2.00003-x] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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15
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Konstantinidis P, Johnson GD. Ontogeny of the jaw apparatus and suspensorium of the Tetraodontiformes. ACTA ZOOL-STOCKHOLM 2011. [DOI: 10.1111/j.1463-6395.2011.00509.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Pelster B, Gittenberger‐de Groot A, Poelmann R, Rombough P, Schwerte T, Thompson M. Functional Plasticity of the Developing Cardiovascular System: Examples from Different Vertebrates. Physiol Biochem Zool 2010; 83:775-91. [DOI: 10.1086/656004] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Anto J, Turingan RG. Relating the ontogeny of functional morphology and prey selection with larval mortality in Amphiprion frenatus. J Morphol 2010; 271:682-96. [PMID: 20101727 DOI: 10.1002/jmor.10826] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Survival during the pelagic larval phase of marine fish is highly variable and is subject to numerous factors. A sharp decline in the number of surviving larvae usually occurs during the transition from endogenous to exogenous feeding known as the first feeding stage in fish larvae. The present study was designed to evaluate the link between functional morphology and prey selection in an attempt to understand how the relationship influences mortality of a marine fish larva, Amphiprion frenatus, through ontogeny. Larvae were reared from hatch to 14 days post hatch (DPH) with one of four diets [rotifers and newly hatched Artemia sp. nauplii (RA); rotifers and wild plankton (RP); rotifers, wild plankton, and newly hatched Artemia nauplii (RPA); wild plankton and newly hatched Artemia nauplii (PA)]. Survival did not differ among diets. Larvae from all diets experienced mass mortality from 1 to 5 DPH followed by decreased mortality from 6 to 14 DPH; individuals fed RA were the exception, exhibiting continuous mortality from 6 to 14 DPH. Larvae consumed progressively larger prey with growth and age, likely due to age related increase in gape. During the mass mortality event, larvae selected small prey items and exhibited few ossified elements. Cessation of mass mortality coincided with consumption of large prey and ossification of key elements of the feeding apparatus. Mass mortality did not appear to be solely influenced by inability to establish first feeding. We hypothesize the interaction of reduced feeding capacities (i.e., complexity of the feeding apparatus) and larval physiology such as digestion or absorption efficiency contributed to the mortality event during the first feeding period.
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Affiliation(s)
- Justin Anto
- Department of Biology, Florida Institute of Technology, 150 West University Boulevard, Melbourne, Florida 32901, USA.
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Anto J, Majoris J, Turingan RG. Prey selection and functional morphology through ontogeny of Amphiprion clarkii with a congeneric comparison. JOURNAL OF FISH BIOLOGY 2009; 75:575-590. [PMID: 20738558 DOI: 10.1111/j.1095-8649.2009.02308.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The relationship between the complexity of the feeding apparatus and prey selection through ontogeny was examined in Amphiprion clarkii larvae. Larvae were reared from 1 to 10 days post-hatch (dph) on a diet of rotifers, wild-caught plankton and newly hatched Artemia sp. nauplii. Results were compared with available data on the relationship between functional morphology and prey selection of Amphiprion frenatus to establish patterns of functional morphology and prey selection between the larvae of two species of coral-reef fishes. Larvae of both species exhibited an increase in selection of larger prey through ontogeny coincident with an increase in the complexity of the feeding apparatus. The first elements to ossify in larvae of both species were the pharyngeal teeth (A. clarkii: 5 dph, near +/-s.d. Standard length, L(S),4. 3 +/- 0. 2 mm; A. frenatus: 5 dph, L(S)5. 0 +/- 0. 4 mm) which, in combination with the development of a more functional feeding apparatus, may have permitted larvae to better process new types and sizes of prey. Prey items, however, were selected differentially between the two fish species, which could not be fully explained by the functional state of the feeding apparatus. While prey selection is influenced by the functional state of the feeding apparatus, all aspects of larval fish biology (morphology, behaviour and physiology) should be considered.
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Affiliation(s)
- J Anto
- Florida Institute of Technology, 150 W. University Boulevard, Melbourne, FL 32901, USA.
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Francis AW, Turingan RG. Morphological and biomechanical changes of the feeding apparatus in developing southern flounder, Paralichthys lethostigma. J Morphol 2009; 269:1169-80. [PMID: 18473368 DOI: 10.1002/jmor.10631] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The feeding biomechanics of premetamorphic, metamorphic, and postmetamorphic southern flounder, Paralichthys lethostigma, were investigated to better understand the origin and design of adult pleuronectiform feeding mechanisms. Larval P. lethostigma were sampled from culture tanks every day from first feeding through metamorphosis. Fish were then fixed, cleared, and double stained for cartilage and bone. Postmetamorphic juvenile and adult fish were obtained from aquaculture facilities, fixed, and the muscles and bones of the head dissected. All fish were digitally photographed from both sides of the head. Measurements from digital images included head depth, head length, and quadratal angle (a measure of articular-quadrate position). Measurements were also made of closing in-lever, opening in-lever, and out-lever moment arm lengths for the determination of lower jaw opening and closing mechanical advantage. In premetamorphic larvae, quadratal angle increased from 40 degrees to 80 degrees , opening lever ratio increased from 0.10 to 0.37, and closing lever ratio increased from 0.06 to 0.40. From these measurements and observations of cleared and double-stained specimens, it was determined that lower jaw depression and elevation changed from a hyoid-based to an opercular-based mechanism prior to the onset of metamorphosis. With migration of the right eye to the left side of the head, quadratal angle remained relatively unchanged at 72 degrees to 84 degrees , opening lever ratio decreased from a high of 0.32 to a low of 0.14, and closing lever ratio decreased to as low as 0.17. Postmetamorphic fish exhibited little change with a quadratal angle of 83 degrees to 84 degrees , an opening lever ratio of 0.19, and a closing lever ratio of 0.17 to 0.19. Paired measurements made on the left (ocular) and right (blind) sides of the head indicated that quadratal angle was asymmetrical during metamorphosis (P = 0.003, alpha = 0.017). Mechanical advantage for lower jaw elevation was also bilaterally asymmetrical following metamorphosis (P = 0.002, alpha = 0.013). Because mechanical advantage for lower jaw depression was not directionally asymmetrical in metamorphic or postmetamorphic P. lethostigma, functional asymmetry (lateral jaw flexion) is not predicted for jaw opening. These results suggest differences in the design and function of feeding mechanisms for premetamorphic, metamorphic, and postmetamorphic P. lethostigma.
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Affiliation(s)
- Austin W Francis
- Department of Biological Sciences, Florida Institute of Technology, Melbourne, Florida 32901, USA.
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Ontogeny of the suspensorial and opercular musculature in the suckermouth armoured catfish Ancistrus cf. triradiatus (Loricariidae, Siluriformes). ZOOMORPHOLOGY 2007. [DOI: 10.1007/s00435-007-0054-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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Grünbaum T, Cloutier R, Mabee PM, Le François NR. Early developmental plasticity and integrative responses in arctic charr (Salvelinus alpinus): effects of water velocity on body size and shape. JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 2007; 308:396-408. [PMID: 17358017 DOI: 10.1002/jez.b.21163] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Environmental conditions such as temperature and water velocity may induce changes among alternative developmental pathways, i.e. phenotypic responses, in vertebrates. However, the extent to which the environment induces developmental plasticity and integrated developmental responses during early ontogeny of fishes remains poorly documented. We analyzed the responses of newly hatched Arctic charr (Salvelinus alpinus) to four experimental water velocities during 100 days of development. To our knowledge, this work is the first to analyze developmental plasticity responses of body morphology to an experimental gradient of water velocities during early ontogeny of fish. Arctic charr body size and shape responses show first, that morphometric traits display significant differences between low and high water velocities, thus revealing directional changes in body traits. Secondly, trait variation allows the recognition of critical ontogenetic periods that are most responsive to environmental constraints (40-70 and 80-90 days) and exhibit different levels of developmental plasticity. This is supported by the observation of asynchronous timing of variation peaks among treatments. Third, morphological interaction of traits is developmentally plastic and time-dependent. We suggest that developmental responses of traits plasticity and interaction at critical ontogenetic periods are congruent with specific environmental conditions to maintain the functional integrity of the organism.
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Affiliation(s)
- Thomas Grünbaum
- Laboratoire de Biologie Evolutive, Université du Québec à Rimouski, Rimouski, Québec, Canada
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22
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Hulsey CD, Mims MC, Streelman JT. Do constructional constraints influence cichlid craniofacial diversification? Proc Biol Sci 2007; 274:1867-75. [PMID: 17519189 PMCID: PMC2270932 DOI: 10.1098/rspb.2007.0444] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2007] [Revised: 05/01/2007] [Accepted: 04/02/2007] [Indexed: 11/12/2022] Open
Abstract
Constraints on form should determine how organisms diversify. Owing to competition for the limited space within the body, investment in adjacent structures may frequently represent an evolutionary compromise. For example, evolutionary trade-offs between eye size and jaw muscles in cichlid fish of the African great lakes are thought to represent a constructional constraint that influenced the diversification of these assemblages. To test the evolutionary independence of these structures in Lake Malawi cichlid fish, we measured the mass of the three major adductor mandibulae (AM) muscles and determined the eye volume in 41 species. Using both traditional and novel methodologies to control for resolved and unresolved phylogenetic relationships, we tested the evolutionary independence of these four structures. We found that evolutionary change in the AM muscles was positively correlated, suggesting that competition for space in the head has not influenced diversification among these jaw muscles. Furthermore, there was no negative relationship between change in total AM muscle mass and eye volume, indicating that there has been little effect of the evolution of eye size on AM evolution in Lake Malawi cichlids. The comparative approach used here should provide a robust method to test whether constructional constraints frequently limit phenotypic change in adaptive radiations.
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Affiliation(s)
- C D Hulsey
- School of Biology and Petit Institute of Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332, USA.
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Cziko PA, Evans CW, Cheng CHC, DeVries AL. Freezing resistance of antifreeze-deficient larval Antarctic fish. ACTA ACUST UNITED AC 2006; 209:407-20. [PMID: 16424091 DOI: 10.1242/jeb.02008] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Antarctic notothenioids, along with many other polar marine fishes, have evolved biological antifreeze proteins (AFPs) to survive in their icy environments. The larvae of Antarctic notothenioid fish hatch into the same frigid environment inhabited by the adults, suggesting that they must also be protected by sufficient AFPs, but this has never been verified. We have determined the contribution of AFPs to the freezing resistance of the larvae of three species: Gymnodraco acuticeps, Pagothenia borchgrevinki and Pleuragramma antarcticum. Of the three, only P. borchgrevinki larvae are protected by high, adult levels of AFPs. Hatchling G. acuticeps and P. antarcticum have drastically inadequate AFP concentrations to avoid freezing at the ambient seawater temperature (-1.91 degrees C). We raised G. acuticeps larvae and measured the AFP levels in their blood for approximately 5 months post hatching. Larval serum freezing point was -1.34+/-0.04 degrees C at the time of hatch; it began to decrease only after 30 days post hatch (d.p.h.), and finally reached the adult value (-2.61+/-0.03 degrees C) by 147 d.p.h. Additionally, AFP concentrations in their intestinal fluids were very low at hatching, and did not increase with age throughout a sampling period of 84 d.p.h. Surviving in a freezing environment without adequate AFP protection suggests that other mechanisms of larval freezing resistance exist. Accordingly, we found that G. acuticeps hatchlings survived to -3.6+/-0.1 degrees C while in contact with external ice, but only survived to -1.5+/-0.0 degrees C when ice was artificially introduced into their tissues. P. antarcticum larvae were similarly resistant to organismal freezing. The gills of all three species were found to be underdeveloped at the time of hatch, minimizing the risk of ice introduction through these delicate structures. Thus, an intact integument, underdeveloped gill structures and other physical barriers to ice propagation may contribute significantly to the freezing resistance and survival of these larval fishes in the icy conditions of the Southern Ocean.
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Affiliation(s)
- Paul A Cziko
- Department of Animal Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
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Abstract
The ontogeny of an organism is a complex process that strongly depends on the timing of developmental processes. In this article, I discuss ontogeny of fish (and other organisms) in temporal terms, based on the hypothesis that organisms as self-organized entities may create their own times for their development, and that this development consists of a sequence of longer stabilized states (steps) with shorter, intermittent less-stable intervals (thresholds). If viewed within the context of structure-to-structure, organ-to-organ and/or organism-to-environment relationships, then the saltatory pattern of ontogeny emerges at each transition from one stabilized state to another. I consider two timing mechanisms essential to ontogeny - synchrony (coordinating) and heterochrony (implementing); their possible roles are discussed. Besides this, a new context and understanding for the term heterochrony is proposed. At least three levels of heterochrony should be distinguished: interspecific, intraspecific and intraindividual. However, the difference among these three types of heterochrony is not in the phenomenon itself but in the way we perceive and classify it.
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Affiliation(s)
- Vladimír Kovác
- Department of Ecology, Faculty of Natural Sciences, Comenius University, Mlynská dolina B2, SK-842 15, Bratislava, Slovakia.
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Adriaens D, Aerts P, Verraes W. Ontogenetic shift in mouth opening mechanisms in a catfish (Clariidae, Siluriformes): a response to increasing functional demands. J Morphol 2001; 247:197-216. [PMID: 11223928 DOI: 10.1002/1097-4687(200103)247:3<197::aid-jmor1012>3.0.co;2-s] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
During ontogeny, larval fish have to deal with increasing nutritional and respiratory demands as they grow. As early ontogeny is characterized by an increasing complexity of moving structural elements composing a fish skull, some constraints will have to be met when developing mechanisms, which enable feeding and respiration, arise at a certain developmental stage. This article focuses on the presence/absence of a possible functional response in mouth opening during ontogeny in Clarias gariepinus. Some reflections are given, based on morphological data, as well as related function-analysis data from the literature. Starting shortly after hatching, a total of up to five different mouth opening mechanisms may become functional. Of these, three may remain functional in the adult. As could be expected, the apparatuses that enable these mechanisms show an increase in complexity, as well as a putative improvement in mouth opening capacity. Initially, two consecutive mechanisms may allow a restricted depression of the lower jaw (both passively and actively). Synchronously, two more mechanisms may arise, which involve the coupling of the hyoid depression to the mouth opening. At about 11 mm SL a fifth mechanism becomes established, better known as the opercular mouth opening mechanism. An overlapping chronology of functionality of the different mechanisms, as well as differences in efficiencies, could be an indication of the absence of a true critical period in C. gariepinus (at least in relation to mouth opening), as well as the possible presence of a shift in feeding type. Finally, the coupling of the chronology of the shift in mouth opening mechanisms and several morphological, behavioral, and physiological changes during ontogeny, related to feeding and respiration, make it possible to distinguish five important phases in the early life history of C. gariepinus.
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Affiliation(s)
- D Adriaens
- Ghent University, Vertebrate Morphology, Ghent, Belgium.
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Wagemans F, Vandewalle P. Development of the cartilaginous skull in solea solea: trends in pleuronectiforms. ACTA ACUST UNITED AC 1999. [DOI: 10.1016/s0003-4339(99)80007-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Adriaens D, Verraes W. Ontogeny of the osteocranium in the African catfish,Clarias gariepinus Burchell (1822) (Siluriformes: Clariidae): Ossification sequence as a response to functional demands. J Morphol 1998; 235:183-237. [DOI: 10.1002/(sici)1097-4687(199803)235:3<183::aid-jmor2>3.0.co;2-8] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Miyake T, von Herbing IH, Hall BK. Neural ectoderm, neural crest, and placodes: Contribution of the otic placode to the ectodermal lining of the embryonic opercular cavity in Atlantic cod (Teleostei). J Morphol 1997; 231:231-252. [DOI: 10.1002/(sici)1097-4687(199703)231:3<231::aid-jmor3>3.0.co;2-e] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Herbing IHV, Miyake T, Hall BK, Boutilier RG. Ontogeny of feeding and respiration in larval Atlantic codGadus morhua (Teleostei, Gadiformes): II. Function. J Morphol 1996; 227:37-50. [DOI: 10.1002/(sici)1097-4687(199601)227:1<37::aid-jmor3>3.0.co;2-m] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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