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Chan J, Geng D, Pan B, Zhang Q, Xu Q. Metagenomic Insights Into the Structure and Function of Intestinal Microbiota of the Hadal Amphipods. Front Microbiol 2021; 12:668989. [PMID: 34163447 PMCID: PMC8216301 DOI: 10.3389/fmicb.2021.668989] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 04/26/2021] [Indexed: 11/13/2022] Open
Abstract
Hadal trenches are the deepest known areas of the ocean. Amphipods are considered to be the dominant scavengers in the hadal food webs. The studies on the structure and function of the hadal intestinal microbiotas are largely lacking. Here, the intestinal microbiotas of three hadal amphipods, Hirondellea gigas, Scopelocheirus schellenbergi, and Alicella gigantea, from Mariana Trench, Marceau Trench, and New Britain Trench, respectively, were investigated. The taxonomic analysis identified 358 microbial genera commonly shared within the three amphipods. Different amphipod species possessed their own characteristic dominant microbial component, Psychromonas in H. gigas and Candidatus Hepatoplasma in A. gigantea and S. schellenbergi. Functional composition analysis showed that “Carbohydrate Metabolism,” “Lipid Metabolism,” “Cell Motility,” “Replication and Repair,” and “Membrane Transport” were among the most represented Gene Ontology (GO) Categories in the gut microbiotas. To test the possible functions of “Bacterial Chemotaxis” within the “Cell Motility” category, the methyl-accepting chemotaxis protein (MCP) gene involved in the “Bacterial Chemotaxis” pathway was obtained and used for swarming motility assays. Results showed that bacteria transformed with the gut bacterial MCP gene showed significantly faster growths compared with the control group, suggesting MCP promoted the bacterial swimming capability and nutrient utilization ability. This result suggested that hadal gut microbes could promote their survival in poor nutrient conditions by enhancing chemotaxis and motility. In addition, large quantities of probiotic genera were detected in the hadal amphipod gut microbiotas, which indicated that those probiotics would be possible contributors for promoting the host’s growth and development, which could facilitate adaptation of hadal amphipods to the extreme environment.
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Affiliation(s)
- Jiulin Chan
- Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, College of Marine Sciences, Shanghai Ocean University, Shanghai, China
| | - Daoqiang Geng
- Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, College of Marine Sciences, Shanghai Ocean University, Shanghai, China
| | - Binbin Pan
- Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, College of Marine Sciences, Shanghai Ocean University, Shanghai, China.,Shanghai Engineering Research Center of Hadal Science and Technology, College of Marine Sciences, Shanghai Ocean University, Shanghai, China
| | - Qiming Zhang
- Shanghai Rainbowfish Ocean Technology Co., Ltd, Shanghai, China
| | - Qianghua Xu
- Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, College of Marine Sciences, Shanghai Ocean University, Shanghai, China.,Shanghai Engineering Research Center of Hadal Science and Technology, College of Marine Sciences, Shanghai Ocean University, Shanghai, China.,National Distant-water Fisheries Engineering Research Center, Shanghai Ocean University, Shanghai, China
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2
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Wilson JPA, Schnabel KE, Rowden AA, Peart RA, Kitazato H, Ryan KG. Bait-attending amphipods of the Tonga Trench and depth-stratified population structure in the scavenging amphipod Hirondellea dubia Dahl, 1959. PeerJ 2018; 6:e5994. [PMID: 30568853 PMCID: PMC6287581 DOI: 10.7717/peerj.5994] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 10/24/2018] [Indexed: 11/20/2022] Open
Abstract
Background The hadal zone encompasses the deepest parts of the world’s ocean trenches from depths of ∼6,000–11,000 m. The communities observed at these depths are dominated by scavenging amphipods that rapidly intercept and consume carrion as it falls to the deepest parts of the trenches. New samples collected in the Tonga Trench provide an opportunity to compare the amphipod assemblages and the population structure of a dominant species, Hirondellea dubiaDahl, 1959, between trenches and with earlier data presented for the Tonga Trench, and other trenches in the South Pacific. Methods Over 3,600 individual scavenging amphipods across 10 species were collected in seven baited traps at two sites; in the Horizon Deep site, the deepest part of the Tonga Trench (10,800 m) and a site directly up-slope at the trench edge (6,250 m). The composition of the bait-attending amphipods is described and a morphometric analysis of H. dubia examines the bathymetric distribution of the different life stages encountered. Results The amphipod assemblage was more diverse than previously reported, seven species were recorded for the first time from the Tonga Trench. The species diversity was highest at the shallower depth, with H. dubia the only species captured at the deepest site. At the same time, the abundance of amphipods collected at 10,800 m was around sevenfold higher than at the shallower site. H. dubia showed clear ontogenetic vertical structuring, with juveniles dominant at the shallow site and adults dominant at the deep site. The amphipods of the deeper site were always larger at comparable life stage. Discussion The numbers of species encountered in the Tonga Trench is less than reported from the New Hebrides and Kermadec trenches, and six species encountered are shared across trenches. These findings support the previous suggestion that the fauna of the New Hebrides, Tonga and Kermadec Trenches may represent a single biogeographic province. The ontogenetic shift in H. dubia between the two Tonga Trench sites supports the hypothesis of interspecific competition at the shallower bathymetric range of the species, and the presence of competitive physiological advantages that allow the adults at the trench axis to exploit the more labile organic material that reaches the bottom of the trench.
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Affiliation(s)
- James P A Wilson
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - Kareen E Schnabel
- Coasts & Oceans, National Institute of Water & Atmospheric Research Ltd., Wellington, New Zealand
| | - Ashley A Rowden
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand.,Coasts & Oceans, National Institute of Water & Atmospheric Research Ltd., Wellington, New Zealand
| | - Rachael A Peart
- Coasts & Oceans, National Institute of Water & Atmospheric Research Ltd., Wellington, New Zealand
| | - Hiroshi Kitazato
- Institute of Biogeosciences, Japan Agency for Marine-Earth Science and Technology, Yokosuka, Kanagawa, Japan
| | - Ken G Ryan
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand
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3
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Havermans C. Have we so far only seen the tip of the iceberg? Exploring species diversity and distribution of the giant amphipod Eurythenes. ACTA ACUST UNITED AC 2016. [DOI: 10.1080/14888386.2016.1172257] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Charlotte Havermans
- OD Nature, Royal Belgian Institute of Natural Sciences, Brussels, Belgium
- Marine Zoology, BreMarE – Bremen Marine Ecology, University of Bremen, Bremen, Germany
- Functional Ecology, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
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4
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Olsen GH, Coquillé N, Le Floch S, Geraudie P, Dussauze M, Lemaire P, Camus L. Sensitivity of the deep-sea amphipod Eurythenes gryllus to chemically dispersed oil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:6497-6505. [PMID: 26635217 DOI: 10.1007/s11356-015-5869-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 11/23/2015] [Indexed: 06/05/2023]
Abstract
In the context of an oil spill accident and the following oil spill response, much attention is given to the use of dispersants. Dispersants are used to disperse an oil slick from the sea surface into the water column generating a cloud of dispersed oil droplets. The main consequence is an increasing of the sea water-oil interface which induces an increase of the oil biodegradation. Hence, the use of dispersants can be effective in preventing oiling of sensitive coastal environments. Also, in case of an oil blowout from the seabed, subsea injection of dispersants may offer some benefits compared to containment and recovery of the oil or in situ burning operation at the sea surface. However, biological effects of dispersed oil are poorly understood for deep-sea species. Most effects studies on dispersed oil and also other oil-related compounds have been focusing on more shallow water species. This is the first approach to assess the sensitivity of a macro-benthic deep-sea organism to dispersed oil. This paper describes a toxicity test which was performed on the macro-benthic deep-sea amphipod (Eurythenes gryllus) to determine the concentration causing lethality to 50% of test individuals (LC50) after an exposure to dispersed Brut Arabian Light (BAL) oil. The LC50 (24 h) was 101 and 24 mg L(-1) after 72 h and 12 mg L(-1) at 96 h. Based on EPA scale of toxicity categories to aquatic organisms, an LC50 (96 h) of 12 mg L(-1) indicates that the dispersed oil was slightly to moderately toxic to E. gryllus. As an attempt to compare our results to others, a literature study was performed. Due to limited amount of data available for dispersed oil and amphipods, information on other crustacean species and other oil-related compounds was also collected. Only one study on dispersed oil and amphipods was found, the LC50 value in this study was similar to the LC50 value of E. gryllus in our study. Since toxicity data are important input to risk assessment and net environmental benefit analyses, and since such data are generally lacking on deep-sea species, the data set produced in this study is of interest to the industry, stakeholders, environmental management, and ecotoxicologists. However, studies including more deep-sea species covering different functional groups are needed to evaluate the sensitivity of the deep-sea compartments to dispersed oil relative to other environmental compartments.
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Affiliation(s)
- Gro Harlaug Olsen
- Akvaplan-niva, High North Research Centre for Climate and the Environment, 9296, Tromsø, Norway.
| | - Nathalie Coquillé
- Cedre, Centre de Documentation, de Recherche et d'Expérimentations sur les Pollutions Accidentelles des Eaux, 715 rue Alain Colas, CS 41 836, Brest Cedex 2, France
| | - Stephane Le Floch
- Cedre, Centre de Documentation, de Recherche et d'Expérimentations sur les Pollutions Accidentelles des Eaux, 715 rue Alain Colas, CS 41 836, Brest Cedex 2, France
| | - Perrine Geraudie
- Akvaplan-niva, High North Research Centre for Climate and the Environment, 9296, Tromsø, Norway
| | - Matthieu Dussauze
- Laboratoire ORPHY EA4324, Université de Bretagne Occidentale, 6 Avenue le Gorgeu, CS 93 837, 29 238, Brest Cedex 3, France
| | - Philippe Lemaire
- Total Fluides SAS, 24 cours Michelet-La Defense 10, 92069, Paris La Défense Cedex, France
| | - Lionel Camus
- Akvaplan-niva, High North Research Centre for Climate and the Environment, 9296, Tromsø, Norway
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5
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Havermans C, Sonet G, d’Udekem d’Acoz C, Nagy ZT, Martin P, Brix S, Riehl T, Agrawal S, Held C. Genetic and morphological divergences in the cosmopolitan deep-sea amphipod Eurythenes gryllus reveal a diverse abyss and a bipolar species. PLoS One 2013; 8:e74218. [PMID: 24086322 PMCID: PMC3783426 DOI: 10.1371/journal.pone.0074218] [Citation(s) in RCA: 104] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Accepted: 07/30/2013] [Indexed: 11/18/2022] Open
Abstract
Eurythenes gryllus is one of the most widespread amphipod species, occurring in every ocean with a depth range covering the bathyal, abyssal and hadal zones. Previous studies, however, indicated the existence of several genetically and morphologically divergent lineages, questioning the assumption of its cosmopolitan and eurybathic distribution. For the first time, its genetic diversity was explored at the global scale (Arctic, Atlantic, Pacific and Southern oceans) by analyzing nuclear (28S rDNA) and mitochondrial (COI, 16S rDNA) sequence data using various species delimitation methods in a phylogeographic context. Nine putative species-level clades were identified within E. gryllus. A clear distinction was observed between samples collected at bathyal versus abyssal depths, with a genetic break occurring around 3,000 m. Two bathyal and two abyssal lineages showed a widespread distribution, while five other abyssal lineages each seemed to be restricted to a single ocean basin. The observed higher diversity in the abyss compared to the bathyal zone stands in contrast to the depth-differentiation hypothesis. Our results indicate that, despite the more uniform environment of the abyss and its presumed lack of obvious isolating barriers, abyssal populations might be more likely to show population differentiation and undergo speciation events than previously assumed. Potential factors influencing species' origins and distributions, such as hydrostatic pressure, are discussed. In addition, morphological findings coincided with the molecular clades. Of all specimens available for examination, those of the bipolar bathyal clade seemed the most similar to the 'true' E. gryllus. We present the first molecular evidence for a bipolar distribution in a macro-benthic deep-sea organism.
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Affiliation(s)
- Charlotte Havermans
- Direction Natural Environment, Royal Belgian Institute of Natural Sciences, Brussels, Belgium
- Biodiversity Research Centre, Earth and Life Institute, Catholic University of Louvain, Louvain-la-Neuve, Belgium
- * E-mail:
| | - Gontran Sonet
- Direction Taxonomy and Phylogeny, Royal Belgian Institute of Natural Sciences, Brussels, Belgium
| | - Cédric d’Udekem d’Acoz
- Direction Taxonomy and Phylogeny, Royal Belgian Institute of Natural Sciences, Brussels, Belgium
| | - Zoltán T. Nagy
- Direction Taxonomy and Phylogeny, Royal Belgian Institute of Natural Sciences, Brussels, Belgium
| | - Patrick Martin
- Direction Natural Environment, Royal Belgian Institute of Natural Sciences, Brussels, Belgium
- Direction Taxonomy and Phylogeny, Royal Belgian Institute of Natural Sciences, Brussels, Belgium
| | - Saskia Brix
- Centre for Marine Biodiversity Research, Senckenberg Research Institute c/o Biocentrum Grindel, Hamburg, Germany
| | - Torben Riehl
- Centre for Marine Biodiversity Research, Senckenberg Research Institute c/o Biocentrum Grindel, Hamburg, Germany
| | - Shobhit Agrawal
- Section Functional Ecology, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
| | - Christoph Held
- Section Functional Ecology, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
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6
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Sainte-Marie B, Lamarche G. The diets of six species of the carrion-feeding lysianassid amphipod genusAnonyxand their relation with morphology and swimming behaviour. ACTA ACUST UNITED AC 2011. [DOI: 10.1080/00364827.1985.10420624] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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7
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Thoen HH, Johnsen G, Berge J. Pigmentation and spectral absorbance in the deep-sea arctic amphipods Eurythenes gryllus and Anonyx sp. Polar Biol 2010. [DOI: 10.1007/s00300-010-0861-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Kaïm‐Malka RA. Biology and life cycle ofTmetonyx similis(G. O. Sars, 1891) (Amphipoda, Lysianassidae), a scavenging amphipod from the continental slope of the Mediterranean. J NAT HIST 2005. [DOI: 10.1080/00222930500240502] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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9
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Arndt CE, Beuchel F. Life history and population dynamics of the Arctic sympagic amphipods Onisimus nanseni Sars and O. glacialis Sars (Gammaridea: Lysianassidae). Polar Biol 2005. [DOI: 10.1007/s00300-005-0045-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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10
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Abstract
Determining the diets of marine invertebrates by gut content analysis is problematic. Many consumed organisms become unrecognizable once partly digested, while those with hard remains (e.g. diatom skeletons) may bias the analysis. Here, we adapt DNA-based methods similar to those used for microbial diversity surveys as a novel approach to study the diets of macrophagous (the deep-sea amphipods Scopelocheirus schellenbergi and Eurythenes gryllus) and microphagous (the bivalve Lucinoma aequizonata) feeders in the deep sea. Polymerase chain reaction (PCR) in conjunction with 'universal' primers amplified portions of the mitochondrial cytochrome c oxidase I (COI) gene for animals ingested by S. schellenbergi and E. gryllus and the 18S rRNA gene for lesser eukaryotes ingested by L. aequizonata. Amplified sequences were combined with sequences from GenBank to construct phylogenetic trees of ingested organisms. Our analyses indicate that S. schellenbergi, E. gryllus and L. aequizonata diets are considerably more diverse than previously thought, casting new light on the foraging strategies of these species. Finally, we discuss the strengths and weaknesses of this technique and its potential applicability to diet analyses of other invertebrates.
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Affiliation(s)
- L E Blankenship
- Marine Biology Research Division, Scripps Institution of Oceanography, 9500 Gilman Dr. 0208, La Jolla CA 92093, USA.
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11
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Vetter EW. Insights into the ecological effects of deep ocean CO2enrichment: The impacts of natural CO2venting at Loihi seamount on deep sea scavengers. ACTA ACUST UNITED AC 2005. [DOI: 10.1029/2004jc002617] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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12
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Bluhm BA, Brey T, Klages M. The autofluorescent age pigment lipofuscin: key to age, growth and productivity of the Antarctic amphipod Waldeckia obesa (Chevreux, 1905). JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY 2001; 258:215-235. [PMID: 11278011 DOI: 10.1016/s0022-0981(01)00214-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Peracarid crustaceans are among the most important taxa in terms of biodiversity and carbon-flow within the Weddell Sea benthos; however, very few data on their age, growth and productivity are available. This study uses the pigment lipofuscin as an age marker in the scavenging amphipod Waldeckia obesa (Chevreux, 1905) from the eastern Weddell Sea. Resin brain sections of 159 trap-caught specimens (1.2 to 7.7 mm coxal plate length L(cox) equal to 5 to 31 mm total length) were recorded digitally by confocal microscopy, and images were analysed. A modal progression analysis of the lipofuscin concentration-frequency distribution revealed five regularly spaced modes presumed to reflect consecutive annual age classes. Single females outside the range of mode V occurred, indicating maximum age of up to 8 years in females. No regular modes were obvious from the comparable length-frequency distribution of 386 individuals. Average yearly pigment accumulation was linear, and accumulation rates did not differ between sexes. The estimates of the growth parameters L(infinity) and k of the von Bertalanffy growth function were 7.47 mm L(cox) and 0.50 per year in females, respectively, and 6.92 mm L(cox) and 0.60 per year in males, respectively. Mortality, estimated from catch curves, amounted to 0.27 per year in females and 0.43 per year in males. P/B ratio, calculated from the mass specific growth rate method, was 0.38 per year for the pooled population (0.25 per year in females, 0.31 per year in males, 2.26 per year in juveniles). The results are discussed with regard to advantages and drawbacks of the methodology, and are compared with results from warmer water habitats.
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Affiliation(s)
- B A. Bluhm
- Alfred-Wegener-Institut für Polar-und Meeresforschung, Columbusstrasse, 27515, Bremerhaven, Germany
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13
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Weissburg MJ. Chemo- and mechanosensory orientation by crustaceans in laminar and turbulent flows: from odor trails to vortex streets. EXS 1997; 84:215-246. [PMID: 9415993 DOI: 10.1007/978-3-0348-8878-3_8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Crustaceans use odor and fluid mechanical cues to extract information from their environment. These cues enable animals to find resources, orient to water currents, or escape predators. Because the properties of the fluid environment affect the transmission and structure of relevant signals, a better understanding of sensory and behavioral mechanisms will be aided by considering, at the same time, the hydrodynamic context of chemo- and mechanosensory behaviors. Crustaceans occupy aquatic habitats where flows range from almost completely laminar to nearly fully turbulent. The considerable scope of hydrodynamic properties is mirrored by equally extreme variations in the complexity of the signals entrained in these flows. Ambient noise and stochastic variation increase in increasingly energetic, turbulent conditions. The sensory and behavioral mechanisms of animals that orient in turbulent environments suggest that they have, in the course of evolution, been shaped by the flow properties. Here, sensory systems are geared to extract rapidly fluctuating signals against a noisy background. They sometimes have elaborate noise filtering mechanisms that enable the detection of rather coarse types of signal features to improve the signal-to-noise ratio. In contrast, the simpler and more predictable structure of signals carried in laminar flows may allow more accurate orientation and discrimination to occur, and free animals from the burden of supporting complex noise-filtering circuitry. Future comparative investigations of sensory physiology and behavior of animals in relation to their flow environment promise to increase our understanding of orientation by means of chemo- and mechanoperception.
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Affiliation(s)
- M J Weissburg
- School of Biology, Georgia Institute of Technology, Atlanta 30332-0230, USA
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14
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Responses by benthic organisms to inputs of organic material to the ocean floor: a review. ACTA ACUST UNITED AC 1997. [DOI: 10.1098/rsta.1990.0060] [Citation(s) in RCA: 332] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Most of the photosynthetically produced organic material reaching the ocean-floor is transported as settling particles, among which larger particles such as faecal pellets and macroaggregates (marine snow) are particularly important. Recent studies in the northeastern Atlantic have demonstrated that macroaggregates originating from the euphotic zone settle at a rate of approximately 100-150 m d
-1
to form a deposit (phytodetritus) on the sediment surface. Bacteria and protozoa (flagellates and foraminifers) rapidly colonize and multiply on phytodetritus, while large deposit feeding animals ingest it. Other inputs, for example
Sargassum
, wood and vertebrate carcasses, also evoke a rapid response by benthic organisms. However, the taxa that respond depend on the form of the organic material. The intermittent or seasonally pulsed nature of phytodetritus and many other inputs regulate the population dynamics and reproductive cycles of some responding species. These are often opportunists that are able to utilize ephemeral food resources and, therefore, undergo rapid fluctuations in population density. In addition, the patchy distribution of much of the organic material deposited on the ocean-floor probably plays a major role in structuring deep-sea benthic ecosystems.
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15
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Steele D, Steele V. Biting mechanism of the amphipodAnonyx(Crustacea: Amphipoda: Lysianassoidea). J NAT HIST 1993. [DOI: 10.1080/00222939300770521] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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16
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Smith K, Kaufmann R, Edelman J, Baldwin R. Abyssopelagic fauna in the central North Pacific: comparison of acoustic detection and trawl and baited trap collections to 5800 m. ACTA ACUST UNITED AC 1992. [DOI: 10.1016/0198-0149(92)90094-a] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Acoustic detection and tracking of abyssopelagic animals: description of an autonomous split-beam acoustic array. ACTA ACUST UNITED AC 1989. [DOI: 10.1016/0198-0149(89)90093-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Population biology of the deep-sea amphipod Eurythenes gryllus: inferences from instar analyses. ACTA ACUST UNITED AC 1987. [DOI: 10.1016/0198-0149(87)90090-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Genetic differentiation of seamount and basin populations of the deep-sea amphipod Eurythenes gryllus. ACTA ACUST UNITED AC 1987. [DOI: 10.1016/0198-0149(87)90054-9] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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20
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Carey AG, Boudrias MA. Feeding ecology of Pseudalibrotus (=Onisimus) litoralis kröyer (Crustacea: Amphipoda) on the Beaufort Sea inner continental shelf. Polar Biol 1987. [DOI: 10.1007/bf00297161] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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21
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BROYER CLAUDE, THURSTON MICHAELH. New Atlantic material and redescription of the type specimens of the giant abyssal amphipod Alicella gigantea Chevreux (Crustacea). ZOOL SCR 1987. [DOI: 10.1111/j.1463-6409.1987.tb00079.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Charmasson SS, Calmet DP. Distribution of scavenging Lysianassidae amphipods Eurythenes gryllus in the northeast Atlantic: comparison with studies held in the Pacific. ACTA ACUST UNITED AC 1987. [DOI: 10.1016/0198-0149(87)90106-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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23
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Baldwin R, Smith K. Temporal variation in the catch rate, length, color and sex of the necrophagous amphipod, Eurythenes gryllus, from the central and eastern North Pacific. ACTA ACUST UNITED AC 1987. [DOI: 10.1016/0198-0149(87)90146-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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24
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Mullineaux LS. Organisms living on manganese nodules and crusts: distribution and abundance at three North Pacific sites. ACTA ACUST UNITED AC 1987. [DOI: 10.1016/0198-0149(87)90080-x] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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25
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LOWRY JK. The callynophore, a eucaridan/peracaridan sensory organ prevalent among the Amphipoda (Crustacea). ZOOL SCR 1986. [DOI: 10.1111/j.1463-6409.1986.tb00234.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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26
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Scavenging and other feeding habits of lysianassid amphipods (Orchomene spp.) from McMurdo Sound, Antarctica. Polar Biol 1986. [DOI: 10.1007/bf00274880] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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27
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Domains of occupation of abyssal scavengers inferred from baited cameras and traps on the Demerara Abyssal Plain. ACTA ACUST UNITED AC 1986. [DOI: 10.1016/0198-0149(86)90128-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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28
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Rau G, Karl D, Carney R. Does inorganic carbon assimilation cause 14C depletion in deep-sea organisms? ACTA ACUST UNITED AC 1986. [DOI: 10.1016/0198-0149(86)90096-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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29
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Wilson RR, Smith KL, Rosenblatt RH. Megafauna associated with bathyal seamounts in the central North Pacific Ocean. ACTA ACUST UNITED AC 1985. [DOI: 10.1016/0198-0149(85)90007-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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30
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Laver M, Olsson M, Edelman J, Smith K. Swimming rates of scavenging deep-sea amphipods recorded with a free-vehicle video camera. ACTA ACUST UNITED AC 1985. [DOI: 10.1016/0198-0149(85)90067-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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31
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Food for the deep sea: utilization, dispersal, and flux of nekton falls at the Santa catalina basin floor. ACTA ACUST UNITED AC 1985. [DOI: 10.1016/0198-0149(85)90089-5] [Citation(s) in RCA: 147] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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32
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Hargrave B. Feeding rates of abyssal scavenging amphipods (Eurythenes gryllus) determined in situ by time-lapse photography. ACTA ACUST UNITED AC 1985. [DOI: 10.1016/0198-0149(85)90090-1] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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33
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Snider L, Burnett B, Hessler R. The composition and distribution of meiofauna and nanobiota in a central North Pacific deep-sea area. ACTA ACUST UNITED AC 1984. [DOI: 10.1016/0198-0149(84)90059-1] [Citation(s) in RCA: 101] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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34
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Smith K, Baldwin R. Vertical distribution of the necrophagous amphipod, Eurythenes gryllus, in the North Pacific: spatial and temporal variation. ACTA ACUST UNITED AC 1984. [DOI: 10.1016/0198-0149(84)90057-8] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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