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  • Chemistry  (408,543)
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  • 101
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    In:  foe@vti.bund.de | http://aquaticcommons.org/id/eprint/5889 | 1240 | 2012-11-13 23:09:19 | 5889 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-12
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Aquaculture ; Biology ; Chemistry ; fish physiology ; Cadmium effect ; contamination ; fish behaviour ; hemogram ; conductivity
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 107-108
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  • 102
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    In:  hartmut.rehbein@mri.bund.de | http://aquaticcommons.org/id/eprint/5369 | 1240 | 2012-11-11 18:38:51 | 5369 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-10
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; fishproducts ; productquality ; biochemical efects ; histamine ; bacterial counts
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 28-31
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  • 103
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    In:  monika.manthey@mri.bund.de | http://aquaticcommons.org/id/eprint/5398 | 1240 | 2012-11-11 18:40:47 | 5398 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-10
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; quality control ; fish ; fish products ; methods ; gas chromatographie
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 131-135
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  • 104
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    In:  horst.karl@mri.bund.de | http://aquaticcommons.org/id/eprint/5982 | 1240 | 2012-11-13 23:11:44 | 5982 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-12
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; fish quality ; fish processing ; thawing ; blanching ; stew ; preserved product
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 196-199
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  • 105
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    In:  J.Oehlenschlaeger@gmx.net | http://aquaticcommons.org/id/eprint/6009 | 1240 | 2012-11-14 14:09:33 | 6009 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-13
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; functionally protein concentrate ; chemical composition ; production process
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 41-43
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  • 106
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    In:  horst.karl@mri.bund.de | http://aquaticcommons.org/id/eprint/6016 | 1240 | 2012-11-14 13:49:00 | 6016 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-13
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; sensory evaluation ; Krill farce ; processing ; storage quality ; packaging ; sensory quality ; antioxidant additives
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 73-75
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  • 107
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    In:  monika.manthey@mri.bund.de | http://aquaticcommons.org/id/eprint/6094 | 1240 | 2012-11-14 14:01:21 | 6094 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-13
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; antarctic fish ; fluoride content ; chemical analysis ; Dissostichus eleginoides ; Chaenocephalus aceratus ; Notothenia gibberifrons ; Notothenia rossii marmorata
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 261-262
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  • 108
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    In:  horst.karl@mri.bund.de | http://aquaticcommons.org/id/eprint/6121 | 1240 | 2012-11-14 15:15:14 | 6121 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-13
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Engineering ; new technologies ; electronic scales ; sea disturbance ; swells ; compensation ; method comparison
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 41-44
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  • 109
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    In:  hartmut.rehbein@mri.bund.de | http://aquaticcommons.org/id/eprint/6151 | 1240 | 2012-11-14 15:03:48 | 6151 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-13
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; fish quality ; frozen fish ; thawing ; quality changes ; storage quality ; fresh fish ; chemical analysis ; fillets ; cod ; saith ; redfish
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 113-119
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  • 110
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    In:  horst.karl@mri.bund.de | http://aquaticcommons.org/id/eprint/6135 | 1240 | 2012-11-14 14:31:04 | 6135 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-13
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Environment ; Fisheries ; chlorinated hydrocarbons ; antarctic fish ; PCB ; DDT ; pollution ; monitoring ; Euphausia superba ; fish products ; consumer protection
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 72-74
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  • 111
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    In:  horst.karl@mri.bund.de | http://aquaticcommons.org/id/eprint/6342 | 1240 | 2012-11-14 16:09:31 | 6342 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-14
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; storage quality ; irradiation effects ; sensoric evaluation ; food quality ; cod filet
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 164-165
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  • 112
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    In:  horst.karl@mri.bund.de | http://aquaticcommons.org/id/eprint/6418 | 1240 | 2012-11-14 16:46:25 | 6418 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-14
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; water retention capacity ; Krill ; processing ; testing methods ; quality control
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 124-126
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  • 113
    Publication Date: 2021-07-14
    Description: The purpose of the project is to improve our understanding about best management practices that can be utilized on diked managed wetlands in Suisun Marsh for reducing the occurrence of low dissolved oxygen (DO) and high methylmercury (MeHg) events associated primarily with fall flood-up practices. Low DO events are of concern because they can lead to undue stress and even mortality of sensitive aquatic organisms. Elevated MeHg levels are of concern because MeHg is a neurotoxin that bio-magnifies up the food chain and can cause deleterious effects to higher trophic level consumers such as piscivorous fish, birds, and mammals (including humans). This study involved two years (2007-2008) of intensive field data collection at two managed wetland sites in northwest Suisun Marsh and their surrounding tidal sloughs, an area with prior documented low DO events. In addition, the study collected limited soils and water quality field data and mapped vegetation for three managed wetland sites in the central interior of Suisun Marsh, for the purpose of examining whether wetlands at other locations exhibit characteristics that could indicate potential for similar concerns. In Year 1 of the study, the objective was to identify the baseline conditions in the managed wetlands and determine which physical management conditions could be modified for Year 2 to reduce low DO and MeHg production issues most effectively. The objective of Year 2 was to evaluate the effectiveness of these modified management actions at reducing production of low DO and elevated MeHg conditions within the managed wetlands and to continue improving understanding of the underlying biogeochemical processes at play. This Final Evaluation Memorandum examined a total of 19 BMPs, 14 involving modified water management operations and the remaining five involving modified soil and vegetation management practices. Some of these BMPs were previously employed and others have not yet been tested. For each BMP this report assesses its efficacy in improving water quality conditions and potential conflicts with wetland management. It makes recommendations for further study (either feasibility assessments or field testing) and whether to consider for future use. Certain previously used BMPs were found to be important contributors to poor water quality conditions and their continued use is not recommended. Some BMPs that could improve water quality conditions appear difficult to implement in regards to compatibility with wetland management; these BMPs require further elaboration and feasibility assessment to determine whether they should be field tested. In practice for any given wetland, there is likely a combination of BMPs that would together have the greatest potential to address the low DO and high MeHg water quality concerns. Consequently, this report makes no sweeping recommendations applicable to large groups of wetlands but instead promotes a careful consideration of factors at each wetland or small groups of wetlands and from that assessment to apply the most effective suite of BMPs.This report also identifies a number of recommended future actions and studies. These recommendations are geared toward improving the process understanding of factors that promote low DO and high MeHg conditions, the extent of these problems in Suisun Marsh, the regulatory basis for the DO standards for a large estuarine marsh, the economics of BMPs, and alternative approaches to BMPs on diked managed wetlands that may address the water quality issues. The most important of these recommendations is that future BMP implementation should be carried out within the context of rigorous scientific evaluation so as to gain the maximum improvement in how to manage these water quality issues in the diked managed wetlands of Suisun Marsh.
    Description: State Water Resources Control Board
    Description: Project Number 06-283-552-0
    Keywords: Agriculture ; Chemistry ; Engineering ; Environment ; Fisheries ; Management ; Pollution ; BMPs ; dissolved oxygen ; mercury ; Suisun Marsh ; managed wetlands ; best management practices ; methyl mercury ; hydrology ; tidal water quality ; Wetlands and Water Resources ; Bachand and Associates ; Suisun Resource Conservation District ; California Department of Fish and Game ; California Department of Water Resources ; University of California Davis ; U.S. Geological Survey
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 353
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  • 114
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    In:  horst.karl@mri.vti.bund.de | http://aquaticcommons.org/id/eprint/6541 | 1240 | 2012-11-14 18:22:41 | 6541 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-06-24
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; organically-bound mercury ; fish species ; utilization ; fish quality ; chemical analysis ; eel ; redfish ; leng ; Molva molva ; Hippoglossus hippoglossus ; shark
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 26-28
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  • 115
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    In:  foe@vti.bund.de | http://aquaticcommons.org/id/eprint/6674 | 1240 | 2011-09-29 13:12:24 | 6674 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-06-26
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Environment ; Fisheries ; inland waters ; surface water ; boron content ; contamination ; pollution ; pollutants ; fish ; health
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 54-55
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  • 116
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    In:  foe@vti.bund.de | http://aquaticcommons.org/id/eprint/6975 | 1240 | 2011-11-03 17:05:12 | 6975 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-06-28
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Biology ; Chemistry ; Environment ; Fisheries ; maximum residue levels ; fish ; fish products ; pesticides ; consumer protection
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 51
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  • 117
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    In:  ines.lehmann@mri.bund.de | http://aquaticcommons.org/id/eprint/6999 | 1240 | 2011-11-08 08:29:32 | 6999 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-06-28
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Biology ; Chemistry ; colouring agents ; degradation ; caviar ; processing ; bacterial metabolism
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 91-95
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  • 118
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    In:  horst.karl@mri.bund.de | http://aquaticcommons.org/id/eprint/7100 | 1240 | 2011-11-15 12:14:29 | 7100 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-06-29
    Description: Referat gehalten auf der WEFTA-Tagung in Hamburg
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; frozen fish ; thawing ; comparison of methods ; high frequency field ; conventional method ; fish quality ; product quality ; freshness
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 142-145
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  • 119
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    In:  foe@vti.bund.de | http://aquaticcommons.org/id/eprint/7181 | 1240 | 2011-11-17 13:03:13 | 7181 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-06-30
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Biology ; Chemistry ; Pollution ; detergents ; biologically degradable ; running waters ; marine environment
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 168
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  • 120
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    In:  horst.karl@mri.bund.de | http://aquaticcommons.org/id/eprint/7186 | 1240 | 2011-11-17 13:00:57 | 7186 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-06-30
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Engineering ; frozen fish ; frozen products ; storage time ; refrigerated products ; freezing chain ; freezing quality ; frozen storage ; quality analysis
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 176-183
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  • 121
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    In:  foe@vti.bund.de | http://aquaticcommons.org/id/eprint/7182 | 1240 | 2011-11-17 13:03:03 | 7182 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-06-30
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Ecology ; Environment ; Pollution ; meeting report ; inland waters ; fishing waters ; pollution ; EIFAC ; FAO ; anthropogenic effect ; regulations
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 169-171
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  • 122
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    In:  horst.karl@mri.bund.de | http://aquaticcommons.org/id/eprint/7218 | 1240 | 2011-11-22 13:09:08 | 7218 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-01
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; Information Management ; analytical methods ; fish ; fish products ; meeting report ; frozen fish ; FAO ; WHO ; Codex Committee
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 31-32
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  • 123
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    In:  horst.karl@mri.bund.de | http://aquaticcommons.org/id/eprint/7216 | 1240 | 2011-11-22 13:10:10 | 7216 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-01
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; standards ; analytical methods ; sampling ; food quality ; fish ; fish products ; preservation agents ; colorants ; sensoric ; frozen fish ; FAO ; WHO ; CODEX Committee
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 27-29
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  • 124
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    In:  horst.karl@mri.bund.de | http://aquaticcommons.org/id/eprint/7306 | 1240 | 2011-11-29 12:44:58 | 7306 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-02
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; product monitoring ; food administration ; drug administration ; fish products ; export ; USA ; biological agents ; mercury detection
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 205-206
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  • 125
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    In:  horst.karl@mri.bund.de | http://aquaticcommons.org/id/eprint/7339 | 1240 | 2011-12-01 18:39:32 | 7339 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-02
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Engineering ; frozen food ; meeting report ; fish quality ; storability ; cooling systems ; cooling technology ; deep freezing ; freeze drying ; refrigerated containers
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 27-31
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  • 126
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    In:  http://aquaticcommons.org/id/eprint/7563 | 424 | 2012-01-31 07:32:03 | 7563 | Centre de Recherches Océanologiques, Côte d'Ivoire
    Publication Date: 2021-07-04
    Description: African catfish (Heterobranchus longifilis Valenciennes, 1840), with a mean weight of 37 g, were raised in 4 m3 concrete tanks, with or without water changes at densities of 10 and 20 fish per m3. The results indicate that, although the low water needs of this catfish offer hope for the productions of 150 tons/hectare/year, water quality must always be monitored.
    Keywords: Aquaculture ; Chemistry ; Management ; Côte d'Ivoire ; Heterobranchus longifilis ; African catfish ; water parameters
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 43-53
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  • 127
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    In:  foe@vti.bund.de | http://aquaticcommons.org/id/eprint/7622 | 1240 | 2012-01-13 13:43:27 | 7622 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-04
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Biology ; Chemistry ; Environment ; corrosion ; brackish water ; biological effects ; organism ; vegetation ; blue mussels ; barnacles ; bacteriological effects
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 104
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  • 128
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    In:  horst.karl@mri.bund.de | http://aquaticcommons.org/id/eprint/7625 | 1240 | 2012-01-13 13:43:45 | 7625 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-04
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; freshwater fish ; amino acid content ; protein
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 105
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  • 129
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    In:  http://aquaticcommons.org/id/eprint/7566 | 424 | 2012-01-31 07:26:04 | 7566 | Centre de Recherches Océanologiques, Côte d'Ivoire
    Publication Date: 2021-07-04
    Description: The acute toxicity of ammonia to the African catfish (Heterobranchus longifilis, Valenciennes 1840) was studied using static bioassay systems.
    Keywords: Biology ; Chemistry ; Ecology ; Heterobranchus longifilis ; African catfish ; ammonia ; toxicity ; bioassay
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 17-24
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  • 130
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    In:  http://aquaticcommons.org/id/eprint/7568 | 424 | 2012-01-31 07:22:03 | 7568 | Centre de Recherches Océanologiques, Côte d'Ivoire
    Publication Date: 2021-07-04
    Description: Biological tests were carried out using static bioassay systems to determine the median lethal concentration of total sulfide (H2S, HS, S2) for African catfish (Heterobranchus longifilis, Valenciennes, 1840) at fry and juvenile stages.
    Keywords: Aquaculture ; Biology ; Chemistry ; Heterobranchus longifilis ; African catfish ; sulfides ; toxicity ; bioassay
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 39-45
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  • 131
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    In:  http://aquaticcommons.org/id/eprint/7732 | 1240 | 2012-01-31 13:46:54 | 7732 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-05
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 48-49
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  • 132
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    In:  ines.lehmann@mri.bund.de | http://aquaticcommons.org/id/eprint/7731 | 1240 | 2012-01-31 13:46:35 | 7731 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-05
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; chemical analysis ; fish products ; boric acid ; preservatives ; fish products ; fish quality
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    In:  http://aquaticcommons.org/id/eprint/16846 | 12051 | 2015-05-03 16:24:17 | 16846 | National Aquatic Resources Research and Development Agency, Sri Lanka
    Publication Date: 2021-07-09
    Description: Sri Lanka is an island surrounded by the Indian Ocean. Many varieties of marine species of fishes are caught in waters surrounding the island. The catches vary from coast to coast with the monsoonal fluctuations. The island is geographically situated in the tropical latitudes of high rainfall. The topographical landscape presents a central cluster of peaks surrounded by vistas of plains. Hence inland water bodies rise and meander in different directions of the country resulting in heterogeneous habitats yielding a host of freshwater fishes. As the different types of marine and freshwater fishes are manifold, an investigation into the nature and constituents of various species from a chemical standpoint was initiated by Lantz and Gunasekera (1957). Their paper was with a view to rendering possible a better commercial utilization of fishes. The present work is an extension of the above with necessary deviations. Lantz and Gunasekera (1957) had published results of 30 species of Sri Lanka fishes. The present paper introduces results of 5 species and investigations are being continued to cover other species. Investigations appearing in this paper were on fish samples obtained from different sales points in Colombo.
    Description: Part 3. in: Bulletin of the Fisheries Research Station, Sri Lanka (Ceylon), 24(1-2), pp. 1-12. - Department of Fisheries, Fisheries Research Station, Ceylon now incorporated in: National Aquatic Resources Research and Development Agency, Sri Lanka
    Keywords: Chemistry ; marine fishes ; freshwater fishes ; chemical analysis ; fats ; ash ; moisture ; proteins ; calorific value ; Sri Lanka
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    In:  http://aquaticcommons.org/id/eprint/16857 | 12051 | 2015-05-03 16:37:32 | 16857 | National Aquatic Resources Research and Development Agency, Sri Lanka
    Publication Date: 2021-07-09
    Description: Chemical analyses of fishes found in Sri Lanka were initiated by Lantz and Gunasekera (1957), who presented data from examination of 30 different species of fishes. Later Peiris and Grero (1972) published the analysed data of 5 more species. The present paper continues the analyses and the results obtained from 10 more varieties of marine fishes are given.
    Description: Part 2. in: Bulletin of the Fisheries Research Station, Sri Lanka (Ceylon), 23(1-2), pp. 1-7. - Department of Fisheries, Fisheries Research Station, Ceylon now incorporated in: National Aquatic Resources Research and Development Agency, Sri Lanka
    Keywords: Chemistry ; marine fishes ; freshwater fishes ; chemical analysis ; fats ; ash ; moisture ; proteins ; calorific value ; Sri Lanka
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    In:  http://aquaticcommons.org/id/eprint/17909 | 12051 | 2015-09-23 07:14:10 | 17909 | Indian Fisheries Association
    Publication Date: 2021-07-02
    Description: The present study reports the effect of artificial seawater on oxygen uptake and opercular frequency in an Indian major carp, Labeo rohita. Whereas a control fish of 7.34 g average body weight consumed 1.538 ml O sub(2.) hˉ¹, the 24h and 96h exposed fish of the same body weight consumed 1.07 4 and 0.897 ml O sub(2.) hˉ¹, respectively. The oxygen uptake per unit body weight under controlled condition was 0.219 ml. gˉ¹. hˉ¹, whereas in 24h and 96h exposed fish, it was 0.152 and 0.124 ml. gˉ¹, hˉ¹, respectively. The change in opercular movement in 24h exposed fish was 7.67% higher, whereas in 96h exposed fish, it was 22.43% higher as compared to the control one. All changes are highly significant (p〈0.001).
    Keywords: Biology ; Chemistry ; salinity tolerance ; sublethal concentration ; artificial sea water ; oxygen uptake ; opercular frequency ; Labeo rohita ; Indian major carp
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    In:  http://aquaticcommons.org/id/eprint/17970 | 12051 | 2015-09-29 15:56:48 | 17970 | Society of Fisheries Technologists, India
    Publication Date: 2021-07-03
    Description: Static bioassays were conducted with pesticides like PP'-DDT, Dimethoate (Rogor) and Carbaryl (Sevin) to determine the median lethal concentrations (LC sub(50)) on an estuarine teleost Therapon jarbua (Forsk). The respiration rates of fishes exposed to pesticides, as well as those of controls were determined. Respiration abnormalitieswere noticed in treated fishes. The metabolic rates are generally higher in treated fishes than in the controls. The behaviour of fishes exposed to LC sub(25) (96h) concentrations of pesticides is discussed. Estuarine fishes appear to be more sensitive and susceptible to pesticides than fresh water fishes. The pesticides affect the locomotory and swimming behaviour of fishes. Loss in weight of fishes exposed to LC sub(50) (96 h) concentration of pesticides was also estimated. The present report gives a comprehensive account of the toxic nature of these pesticides to fishes.
    Keywords: Chemistry ; Pollution ; Therapon jarbua ; pesticides ; metabolic rates ; respiration rates ; pollution effects ; behavioural changes ; physiological changes
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    In:  http://aquaticcommons.org/id/eprint/18086 | 12051 | 2015-10-01 16:07:27 | 18086 | Society of Fisheries Technologists, India
    Publication Date: 2021-07-05
    Description: The triglyceride fatty acid components from the heart lipid of Puntius sarana of different sizes have been characterized by thin-layer and gas liquid chromatography. Csub(10) to Csub(24) acids including both odd-numbered and branched chain acids were detected. The major constituents were ante-iso Csub(10), Csub(10), Csub(12:2), Csub(14), Csub(16), Csub(16:1),Csub(17), Csub(18) , Csub(18:1), Csub(18:2), Csub(18:3) and Csub(20:4) while twenty other acids were detected in lower proportion. The composition of these acids and their variation with size of fish have been investigated and discussed.
    Keywords: Chemistry ; Puntius sarana ; triglyceride fatty acids ; biochemical composition
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    In:  http://aquaticcommons.org/id/eprint/18090 | 12051 | 2015-10-01 16:13:14 | 18090 | Society of Fisheries Technologists, India
    Publication Date: 2021-07-05
    Description: Results of laboratory and field trials on cathodic protection of aluminium sheathing in fishing boats by ternary aluminium anodes are presented. The high negative potential of 1.06 V with respect to saturated calomel electrode, its appreciably low anodic polarization and high current output are favourable factors for using the ternary aluminium anodes. The low rate of consumption of the anode material under service trials attests its economic viability.
    Keywords: Chemistry ; Fisheries ; cathodic protection ; anodes ; fishing vessels ; corrosion control ; India
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    In:  http://aquaticcommons.org/id/eprint/17867 | 12051 | 2015-09-19 12:36:37 | 17867 | Indian Fisheries Association
    Publication Date: 2021-07-01
    Description: The present investigation is to assess the genotoxic potential of nickel chloride and zinc sulphate on gill cells of silver carp Hypophthalmichthys molitrix. Fishes were exposed in sublethal concentration of nickel chloride 5. 7 mg/1 and zinc sulphate 6.8 mg/1, and sampled at 10, 20 and 30 days. Nickel chloride and zinc sulphate treated fishes exhibited an apparent increase in the aberration frequency and a decrease in the mitotic index as compared tocontrol. Acentric fragment, chromatid break, endoreduplication, chromatid gap, centromeric fusion, ploidy, sticky plate, dicentric chromosome, clumpingand partial sticky plates were some of the abnormalities observed. The chromosomal aberrations in the treated fishes were significant compared to control.
    Keywords: Biology ; Chemistry ; hypophthalmichthys molitrix ; mickel chloride ; zinc sulphate ; gill cells ; chromosomal aberration
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    In:  http://aquaticcommons.org/id/eprint/18167 | 12051 | 2015-10-14 05:52:49 | 18167 | Society of Fisheries Technologists, India
    Publication Date: 2021-07-06
    Description: The phospholipids of five Indian food fishes (sardine, pomfret, mackerel, anchovies and thrissocles) were fractionated quantitatively using column and thin layer chromatographic techniques and the results reported in this communication.
    Keywords: Chemistry ; Fisheries ; Sardinella longiceps ; Pampus argenteus ; Rastrelliger kanagurta ; Anchoviella ; Thrissocles mystax ; food fishes ; phospholipids ; fatty acid composition ; India
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    In:  http://aquaticcommons.org/id/eprint/18548 | 12051 | 2015-11-04 14:56:47 | 18548 | Society of Fisheries Technologists, India
    Publication Date: 2021-07-10
    Description: Arylsulfatase activity and growth were estimated in Escherichia coli, isolated from marine sediment. Maximum activity was observed at pH 6.6 whereas the maximum growth was at pH 5.6. 2x10ˉ³ M is the optimum substrate concentration for the highest level of enzyme activity/synthesis as well as for its growth. In general higher substrate concentration tended to inhibit enzyme activity and also the growth of the bacterium. Maximum growth and highest enzyme activity occurred at 29°C and above this temperature decreased both of them. Besides these, glucose, sodium sulfate, sodium chloride, sodium dihydrogen phosphate, sodium acetate and ammonium chloride at higher concentrations were inhibiting the enzyme activity and growth. Above 0.2% of glucose, 3% of sodium chloride, 10x10ˉ³ M concentrations of sodium sulfate, sodium dihydrogen phosphate, sodium acetate and ammonium chloride inhibited the activity and growth also. These observations indicate that, to generalize a compound as inhibitor or activator it is difficult since this depends not only on its concentration but also on the source of the enzyme when more than one type is encountered in nature.
    Keywords: Chemistry ; arysulfate sulfohydrolase ; enzymatic activity ; Escherichia coli ; bacteria
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    In:  http://aquaticcommons.org/id/eprint/18558 | 12051 | 2015-11-04 15:16:46 | 18558 | Society of Fisheries Technologists, India
    Publication Date: 2021-07-10
    Description: Three species of intertidal filter feeding bivalves (Modiolus carvalhoi, Modiolus sp. and Donax spiculum) exposed to mercury and cadmium filtered significantly less volume of water under individual metal and metal mixture stress. Mercury and cadmium in mixtures interacted additively and more than additively (Synergism) in depressing the filtration rate of the bivalves.
    Keywords: Chemistry ; Pollution ; filtration ; cadmium ; toxicity tests ; filter feeders ; heavy metals ; mercury ; Modiolus curvalhoi ; Donax spiculum
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    In:  http://aquaticcommons.org/id/eprint/18559 | 12051 | 2015-11-14 12:00:02 | 18559 | Society of Fisheries Technologists, India
    Publication Date: 2021-07-10
    Description: The effects of preservatives like fat coated sorbic acid (FCSA) and glucono-deltalactone (D-lactone), both separately and in combination, on the shelf life of high temperature (115.6°C for 20 min) processed fish sausage, stored at three different temperatures namely, ambient (28±2° C), cooler storage (2±2°C) and refrigerator (10±2° C) were studied. Whereas the control (without preservative), FCSA, D-lactone and FCSA + D-lactone treated samples could be stored for 9, 11 and 13 days respectively at ambient temperature, those stored at lower temperatures were found to be in acceptable condition for 70 and 80 days respectively. Organoleptic evaluation of taste, flavour the products carried out by panelists revealed that FCSA and FCSA + D-lactone treated samples were unacceptable with regard to the taste, flavour and texture. However, the taste flavour and texture of the control and D-lactone treated samples were in acceptable condition.
    Description: Alternative name spelling: Cross Victor Raj, M. - Pt. 1: An improved technique. Fishery Technology, 23(2), pp. 146-148. - Pt. 3: Studies on some of the storage characteristics. Fishery Technology, 24(1), pp. 48-53. - Pt. 4: Heat penetration study. Fishery Technology, 24(2), pp. 136-137.
    Keywords: Chemistry ; Fisheries ; minced products ; preservatives ; storage life ; processing fishery products ; organoleptic properties ; Nemipterus japonicus
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    Islamic Azad University, Science and Research Branch, Tehran, Marine Biology
    In:  http://aquaticcommons.org/id/eprint/19121 | 17408 | 2016-02-01 21:05:26 | 19121 | Islamic Azad University, Science and Research Branch, Tehran
    Publication Date: 2021-07-13
    Description: Study on the biomarkers types to assess health status of marine ecosystems in environmental biomonitoring has an important value. Accordingly, accumulation of polycyclic aromatic hydrocarbons(PAHs) in sediment, water and tissues (liver and gill) of mudskipper(i.e. Boleophthalmus dussumieri) and some physiological responses like lysosomal membrane change performed on haemocytes, stability of red blood cell membrane and the Glutathione-S Transferase (GST) activity in the liver were measured in mudskipper. Samples were obtained from five sites along north western coast of the Persian Gulf (Khuzestan coast). Red blood cell membrane changes after different concentration of PAHs at different time was also studied to evaluate impact of PAHs compound on cell membrane. PAHs concentration was measured by HPLC method. The activity of GST enzyme was analysed by spectrophotometric method. Lysosomal membrane change was measured by NRR time method and stability of red blood cell membrane was evaluated by EOF test. Total PAH concentrations in the coastal sea water, the sediments, theliver and the gill tissues ranged between 0.80-18.34 μg/l, 113.50-3384.34 ng g-1 (dry weight), 3.99-46.64 ng g-1 dw and 3.11-17.76 ng g-1 dw, respectively.Highest PAHs pollution was found at Jafari while the lowest was detected at Bahrakan sampling sites. The lowest enzymatic activity was identified at Bahrakan (7.19 ± 1.541 nmol/mg protein/min), while the highest was recordedat Jafari (46.96 ± 7.877 nmol/mg protein/min). Comparative analysis of GST activity in the liver of mudskippers showed significant difference (p 〈 0.05) between the locations of Jafari and Bahrakan, and with other sites. Moreover, nosignificant difference was detected between the locations of Arvand, Zangi and Samayeli (p 〈 0.05). The mean RT was below 90 minutes in all sampling sites.Values of mean RT of the dye ranged from 34 (for the blood samples of mudskipper collected from Jafari site) to 78 minutes (for the blood samples of mudskipper collected from Bahrakan site). Spatial evaluation revealed the longest RT in fish from Bahrakan as compared with those from other sites.Preliminary results showed a significant difference (p 〈 0.05) among sampling sites except between Arvand and Zangi (p 〉 0.05). Osmotic fragility curves indicated that erythrocytes collected from mudskippers at Jafari were the most 009fragile followed by Zangi〉 Arvand〉 Samayeli〉 and Bahrakan. The mean erythrocyte fragility was significantly higher at Jafari site (p 〈 0.05) when compared to other sites. Significant differences were found between the varioussites (p 〈 0.05).The result indicated no significant differences between the control and treatments of mudskipper RBC exposed to field concentrations of PAHs (P〉0.05). The results further indicated significant differences (P〈0.05) between the control and treatments of mudskipper RBC exposed to acute. Potency Divisor concentrations. It is clear from the present result that chronic. Potency Divisor concentrations protect red cells against osmotic hemolysis. This study, however, showed that PAH concentrations in this region are not higher than the available standards. The findings showed that Lysosomal membrane destabilization, liver GST activities and fragility of red cell membrane are highly sensitive in the mudskipper, B. dussumieri. Thus, mudskipper perceived to begood sentinel organisms for PAH pollution monitoring. Sediment PAH concentrations were strongly correlated with biomarkers, indicating that PAH type pollutants were biologically available to fish. One of the possible riskassessment implications of this study is that biomarkers can be applied not only to characterize biological effects of pollution exposures, but also to determine the bioavailability of pollution in aquatic systems. The results also indicated that PAHs compound possess anti haemolytic property.
    Description: PhD
    Description: Advisors:P. Eghtesadi Araghi, A. Mashinchian Counsellors: M. R. Fatemi, G. Riazi
    Keywords: Biology ; Chemistry ; Fisheries
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    Type: thesis
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    In:  ulyssesmontojo@gmail.com | http://aquaticcommons.org/id/eprint/27090 | 25026 | 2020-08-21 04:28:09 | 27090 | National Fisheries Research and Development Institute, Philippines
    Publication Date: 2021-07-24
    Description: Waste from aquaculture is considered as one of the possible causes of water quality deterioration in Manila Bay. Aquaculture in the area accounts for almost 30% of the total production in the Philippines. This high production entails intensified application of inputs that could possibly contribute to the nutrient (nitrogen, N and phosphorus, P) load in the bay. Thus, estimation of the N, P and SO4 loaded from aquaculture farms is necessary to develop more responsive intervention to reduce nutrient load in Manila Bay. Water samples were collected throughout the rearing period from different aquaculture systems in Cavite, Bulacan, Pampanga, and Bataan. The annual estimated N and P loaded from aquaculture farms were 12, 696.66 MT and 2, 363.01 MT, respectively. Fish pens/cages recorded the highest contribution accounting for 88% N and 86% P of the total load. It can be attributed to the direct release of uneaten feeds into the bodies of water. Roughly, 12% N and 14% P were obtained from the fishponds. Furthermore, the annual SO4 loaded from fishponds was estimated at 36,917.54 MT. Results of the study suggested that there should be an extensive monitoring of the environmental impacts and annual load of aquaculture farms for the sustainable regulations and management of aquaculture activities to reduce nutrient load and improve the aquaculture production as well. Finally, strict compliance to the regulatory guidelines and ordinances must be imposed to achieve the effluent quality standards.
    Description: Bureau of Fisheries and Aquatic Resources
    Keywords: Aquaculture ; Chemistry ; Ecology ; Environment ; Pollution ; fishponds ; fish pens/cages ; nitrogen ; phosphorus ; nutrient load
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    In:  http://aquaticcommons.org/id/eprint/27089 | 25026 | 2020-08-06 00:54:51 | 27089 | National Fisheries Research and Development Institute, Philippines
    Publication Date: 2021-07-24
    Description: Ciguatera Fish Poisoning (CFP) is primarily caused by ingesting reef fishes contaminated with ciguatoxins (CTX) produced by the Gambierdiscus species. The unpredictability of this type of food poisoning poses risks to public health and adversely affecting the fish trade industry. This study aimed to provide useful information on ciguatera in the Philippines. Different reef fish species and host-macroalgae for benthic dinoflagellates were collected in Visayan and Sibuyan Seas. Ciguatoxins were extracted from reef fish samples, and toxicity was determined qualitatively using mouse bioassay. Meanwhile, cell density estimation of toxic benthic dinoflagellates isolated from the host-macroalgae was done through microscopy. It was observed that 4.46% of the total reef fish samples were positive with ciguatoxins. Spatially, Carles, Iloilo in Visayan sea had the highest number of toxic specimens belonging to Epinephelus merra, Lethrinus lentjan, Lutjanus campechanus, Scarus quoyi, Siganus guttatus, and Sphyraena barracuda. Based on data gathered from three sampling sites, fish toxin occurrence is observed to be site-specific. Geographical conditions affect the frequency of toxic samples. Moreover, fish weight is not a good predictor of fish toxicity. For toxic benthic dinoflagellates, Gambierdiscus spp. were observed to have the lowest cell density count among other dinoflagellates averaging 7-115 cells per 100 g macroalgae. On the other hand, Ostreopsis spp. had the highest average cell density of 118-1,455 cells per 100 g macroalgae, followed by Prorocentrum spp. (207-594 cells per 100 g macroalgae). Fish toxicity is directly proportional to the occurrence of benthic dinoflagellates in areas as seen during dry season. Monitoring and management of CFP on identified reef fish vectors and its causative benthic dinoflagellates in the area are necessary to promote food safety and fair trade practice.
    Description: National Fisheries Research and Development Institute
    Keywords: Chemistry ; Ecology ; Fisheries ; Health ; Ciguatoxin ; Gambierdiscus ; toxic reef fish ; Visayan sea ; Sibuyan sea
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    In:  horst.karl@mri.bund.de | http://aquaticcommons.org/id/eprint/8166 | 1240 | 2012-02-28 12:34:32 | 8166 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-06-30
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Engineering ; Fisheries ; fish products ; fish quality ; storage quality ; processing ; quality change ; metallic contamination ; chemical analysis
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    In:  horst.karl@mri.bund.de | http://aquaticcommons.org/id/eprint/8200 | 1240 | 2012-03-05 12:56:40 | 8200 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-06-30
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Engineering ; Fisheries ; meeting report ; fish quality ; storage effects ; fish products ; fish processing ; catch methods ; frozen fish
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    In:  ines.lehmann@mri.bund.de | http://aquaticcommons.org/id/eprint/8218 | 1240 | 2012-03-05 13:04:43 | 8218 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-06-30
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Engineering ; Fisheries ; conservation ; fish quality ; storage quality ; marinade ; chemical analysis ; processing
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    In:  horst.karl@mri.bund.de | http://aquaticcommons.org/id/eprint/8263 | 1240 | 2012-02-29 14:14:41 | 8263 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-01
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Engineering ; Fisheries ; fish processing ; fish products ; preservatives ; product quality ; sodium pyrophosphate
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    In:  horst.karl@mri.bund.de | http://aquaticcommons.org/id/eprint/8394 | 1240 | 2012-03-29 18:37:07 | 8394 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-07-02
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Engineering ; Fisheries ; product quality ; fish quality ; herring products ; fish processing
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    In:  ines.lehmann@mri.bund.de | http://aquaticcommons.org/id/eprint/7876 | 1240 | 2012-01-31 13:38:16 | 7876 | Bundesforschungsanstalt für Fischerei
    Publication Date: 2021-06-25
    Description: Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; frozen fish ; fish quality ; fish processing ; storage ; temperature effects ; blastfreezing ; cod fillet
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    In:  http://aquaticcommons.org/id/eprint/8906 | 403 | 2012-06-18 09:30:58 | 8906 | United States National Marine Fisheries Service
    Publication Date: 2021-06-29
    Description: Oceanic incidence and spawning frequency of ChesapeakeBay striped bass (Morone saxatilis) were estimated by using microchemical analysis of strontium in otoliths. Otoliths from 40 males and 82 females sampled from Maryland’s portion of the Chesapeake Bay were analyzed for seasonal and age-specific patterns in strontium and calcium levels. The proportion of oceanic females increased from 50% to 75% between ages seven to 13; the proportion of oceanic malesincreased from 20% to ~50% between ages four to 13. Contrary to an earliermodel of Chesapeake Bay striped bassmigration, results indicated that a substantial number of males undertook oceanic migrations. Further, we observed no mass emigration of females from three to four years of agefrom the Chesapeake Bay. Seasonal patterns of estuarine habitat use were consistent with annual spawning runsby striped bass of mature age classes, but with noteworthy exceptions for newly mature females. Evidence of an early oceanic presence indicated that Chesapeake Bay yearlings move into coastal regions—a pattern observed also for Hudson River striped bass. Otolith microchemical analysesrevealed two types of behaviors (estuarine and oceanic) that confirm migratory behaviors recently determined for other populations of striped bass and diadromous species (e.g., American eels [Anguilla rostrata] Americanshad [Alosa sapidissima] and white perch [Morone Americana]).
    Keywords: Biology ; Chemistry ; Ecology ; Fisheries
    Repository Name: AquaDocs
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    In:  http://aquaticcommons.org/id/eprint/10037 | 4006 | 2015-06-01 17:38:17 | 10037 | Universidad Nacional de Mar del Plata
    Publication Date: 2021-06-29
    Description: Marine mammals accumulate heavy metals in their tissues at different concentrations according to trophic levels and environmental conditions. The franciscana (Pontoporia blainvillei) is a small coastal species inhabiting the marine and estuarine areas of the Southwestern Atlantic Ocean. Its diet includes numerous species of small fish, squid and crustaceans. The aims of this study were to (i) assess the heavy metal concentration and burden distribution in different franciscana age classes and sex, and to (ii) evaluate both the accumulation processes and the transplacental transference of zinc, cadmium, copper and total mercury. Heavy metal concentrations (wet weight) were determined in eighteen dolphins by Atomic Absorption Spectrophotometry (AAS),by the cold vapour technique (mercury) or with air/acetylene flame (cadmium, zinc and copper). Liver showed the highest concentrations of mercury (max. 8.8 mg/g), zinc (max. 29.7 mg/g) and copper (max. 19.0 mg/g), whereas the highest cadmium concentrations (max. 6.7 mg/g) were found in kidney. Adults contained the highest concentrations for all heavy metals, followed by juveniles and calves in decreasing order, suggesting an age-related accumulation. No differences (p〈0.05) were found betweensexes within each age class. Organ burden distribution followed the same pattern for all metals and age classes: liver tissues contained maximum burdens. Mercury concentrations were higher than those of cadmium in both foetuses and newborns; and neither metal could be detected in the foetus. The analysed data suggested differences in the placental transference between metals, being significant for mercury and almost null in the case of cadmium. We can conclude that franciscana accumulates heavymetals and, due to its coastal distribution, it may be considered as a biomonitor of its environment.SPANISH: Los mamíferos marinos acumulan metales pesados en sus tejidos cuyas concentraciones están en relación con su nivel trófico y las condiciones ambientales. La franciscana (Pontoporia blainvillei) es una especie costera que habita áreas marinas y estuariales en el Atlántico Sudoccidental. Su dieta está constituída por peces, como item alimentario principal, calamares y crustáceos. El objetivo del presente trabajo es estudiar la distribución de metales pesados en diferentes clases de edad y en ambos sexos, evaluando procesos de acumulación y cargas de cadmio, mercurio total, cinc y cobre. Las concentraciones de metales pesados (enpeso húmedo) fueron determinadas en dieciocho delfines por Espectrofotometría de Absorción Atómica (EAA), usando la técnica de vapor frío (mercurio) o llama de aire/acetileno (cadmio, cinc y cobre). El hígado presentó las concentraciones más altas de mercurio (máx. 8,8 mg/g), cinc (máx. 29,7 mg/g) y cobre (máx. 19,0 mg/g), mientras que las más altas de cadmio (máx. 6,7 mg/g) fueron encontradasen el riñón. Los adultos presentaron los niveles más altos, presentando los juveniles y cachorros concentraciones menores, lo cual sugirió una acumulación con la edad. No se encontraron diferencias significativas (p 〈 0,05) entre sexos dentro de cada clase de edad. Las cargas de metales pesados en los órganos presentaron la misma disribución para todos los metales y clases de edad. Los valoresmás altos fueron encontrados en el hígado, incluyendo los correspondientes a cadmio. Las concentraciones de mercurio y cadmio fueron no detectables en el feto, mientras que las de mercurio fueron superiores a las de cadmio en los cachorros. Los datos encontrados en el feto sugieren una transferencia nula a través de la placenta. Podemos concluir que P.blainvillei acumula metales pesados ensus tejidos y debido a su distribución costera, esta especie puede ser considerada como un biomonitor de su ambiente.
    Description: Special Issue No. 1, 2002
    Keywords: Aquaculture ; Biology ; Chemistry ; Environment ; Fisheries
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    Type: article , TRUE
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    Format: application/pdf
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    In:  monika.manthey@mri.bund.de | http://aquaticcommons.org/id/eprint/11000 | 1240 | 2020-08-23 05:54:49 | 11000 | Johann Heinrich von Thünen-Institut, Bundesforschungsinstitut für Ländliche Räume, Wald und Fischerei
    Publication Date: 2021-06-26
    Description: KurzfassungDer Handel mit tiefgefrorenen Kammmuscheln (Pectinidae) hat in den letzten Jahren deutlich zugenommen und ist von der Jakobsmuschel (Pecten maximus) auf eine Reihe weiterer Spezies erweitert worden. Neben nicht zutreffender Handelsbezeichnung fällt diese Erzeugnisgruppe immer wieder durch einen erhöhten Wasserzusatz negativ auf. Es wurde die Zusammensetzung des Muskelfleisches von Produkten aus dem deutschen Handel bestimmt und das Wasser zu Protein- Verhältnis (W/P) berechnet. Eine erhebliche Zahl von Proben hatte hohe Wassergehalte und ein W/P Verhältnis 〉 5. Dies betraf insbesondere die Tiefseescallop (Placopecten magellanicus) und die Japanische Kammmuschel (Mizuhopectenyessoensis). In den meisten Fällen wurden Zusatzstoffe nachgewiesen, obwohl die gesetzlich vorgeschriebene Deklaration fehlte.AbstractThe market share of quick-frozen scallops (Pectinidae) has increased significantly in recent years and has been extended besides the king scallop (Pecten maximus) to a variety of other species. Apart from an incorrect labeling this product group stands out for often excessively high water addition. The composition of the muscle meat and the water to protein ratio (W/P) was determined in samples from the German retail. The results showed that a considerable number of samples had very high moisture contents and W/P ratios 〉 5. These facts were mainly true for Placopecten magellanicus and Mizuhopecten yessoensis. There was no conformity with the prescribed declaration of food additives.
    Description: Johann Heinrich von Thünen-Institute, Federal Research Institute of Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung - Information on Fishery Research in 2010
    Keywords: Chemistry ; Fisheries ; product quality ; Pecten maximus ; Placopecten magellanicus ; Mizuhopecten yessoensis ; quality changes ; EU regulations ; leagle aspects ; Seafood
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    Type: article
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    Texas Game and Fish Commission | Rockport, Texas
    In:  http://aquaticcommons.org/id/eprint/14235 | 9596 | 2020-08-23 21:31:54 | 14235 | Galveston Bay Information Collection
    Publication Date: 2021-06-24
    Description: Objectives: (1) To determine the toxic effects of waste waters on marine life; (2) To determine toxic chemical compounds present in waste streams; (3) Encourage company representatives to improve quality of waste water.
    Description: Industrial Waste Control in Region MP-1
    Keywords: Chemistry ; Pollution ; bioassays ; chemical analysis ; wastewater ; outfalls ; water analysis ; industrial wastes ; pollution ; GBIC
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    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 11
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  • 157
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    In:  greg.doucette@noaa.gov | http://aquaticcommons.org/id/eprint/14899 | 403 | 2014-03-11 19:24:22 | 14899 | United States National Ocean Service
    Publication Date: 2021-06-28
    Description: A bacterial strain (D38BY) belonging to the family Flavobacteriaceae and antagonistic towards an algicidal bacterium (strain S03; Flavobacteriaceae) was isolated from a culture of the red tide dinoflagellate Karenia brevis that had previously been characterized as resistant to attack by strain S03. This antagonistic bacterium increased the survival time of otherwise susceptible, bacteriafreeK. brevis cultures in a concentration-dependent manner during exposure to the algicidal bacterium. Experimental evidence indicated that direct contact was required in order for strain D38BY to inhibit the killing activity of algicidal strain S03. While further work is needed to determine its precise mode of action, the antagonistic properties of strain D38BY provide further evidence that the resistance or susceptibility of certain algal taxa to algicidal attack can be more a function of interactions within the ambient microbial community than an intrinsic property of the alga.
    Keywords: Chemistry ; Ecology ; Fisheries ; Health
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    Format: application/pdf
    Format: 251-259
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    In:  melissafried@yahoo.com | http://aquaticcommons.org/id/eprint/14904 | 403 | 2014-03-10 20:01:43 | 14904 | United States National Ocean Service
    Publication Date: 2021-06-28
    Description: Ciguatera Fish Poisoning (CFP) is the most frequently reported seafood-toxin illness in the world, and it causes substantial physical and functional impact. It produces a myriad of gastrointestinal, neurologic and/or cardiovascular symptoms which last days to weeks, or even months. Although there are reports of symptom amelioration with some interventions (e.g. IV mannitol), the appropriate treatment for CFP remains unclear to many physicians. We review the literature on the treatments for CFP, including randomized controlled studies and anecdotal reports. The article is intended to clarify treatment options, and provide information about management and prevention of CFP, for emergency room physicians, poison control information providers, other health care providers, and patients.
    Keywords: Chemistry ; Health ; Management
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  • 159
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    U.S. Fish and Wildlife Service | Chicago, IL
    In:  http://aquaticcommons.org/id/eprint/15543 | 222 | 2014-10-21 21:31:03 | 15543 | United States Fish and Wildlife Service
    Publication Date: 2021-07-08
    Description: Effluents leaving the Gilt Edge Mining properties in the Black Hills near Deadwood, South Dakota, were collected during April 1940. Field studies of these effluents and of the streams receiving them were made at the time and subsequently laboratory assays and analyses have been completed. ... Data from this particular case of mine waste pollution are presented here.
    Description: Date of report as shown on p. 1: 1943/1945
    Keywords: Chemistry ; Environment ; Limnology ; Pollution ; Gilt Edge Mining ; effluents ; Deadwood ; SD
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    Type: monograph
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    Format: application/pdf
    Format: 9
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  • 160
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    In:  http://aquaticcommons.org/id/eprint/15580 | 8 | 2014-11-06 19:44:08 | 15580
    Publication Date: 2021-07-08
    Description: EXTRACT (SEE PDF FOR FULL ABSTRACT):A net snow accumulation time series is presented. It is derived from a 102.5 m ice core retrieved from Mt. Logan at an altitude of 5340 m a.s.l. Annual increments are identified using stable isotopes, trace chemistry, and beta activity. ... The resulting time series of nearly 300 years seems to indicate a lower mean accumulation from AD 1700 to the mid-19th century than after that time. The last 100 years of the series correlates significantly with certain instrumental station records at mid-northern latitudes.
    Keywords: Atmospheric Sciences ; Chemistry ; Earth Sciences ; PACLIM
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    Type: conference_item
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    Format: application/pdf
    Format: 145-147
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  • 161
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    In:  http://aquaticcommons.org/id/eprint/15623 | 8 | 2014-11-11 03:13:16 | 15623
    Publication Date: 2021-07-09
    Description: The stable isotopic composition of buried soil carbonate and organic matter from northern Pakistan and Nepal can be used to reconstruct aspects of the paleoecology of riverine floodplain ecosystems over the past 17 Myr. Probable dry woodland dominated the floodplain biomass of large rivers ancestral to the modern Indus and Ganges up to 7.3 Myr. Between 7.3 and about 6 Myr, tropical grasses gradually displaced woodland and have dominated floodplain biomasses to the present. The paleovegetational transition beginning about 7.3 Myr likely signals the onset of the strongly seasonal precipitation pattern that typifies the monsoonal climate of the region today. One possible analog to the dry woodland soils of the Miocene are found under the Sal woodlands of the northern Indian subcontinent, while undisturbed modern analogs to the Plio-Pleistocene floodplain grasslands can still be found in the Chitwan area of southern Nepal.
    Keywords: Atmospheric Sciences ; Chemistry ; Earth Sciences ; Ecology ; PACLIM
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    Type: conference_item
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    Format: application/pdf
    Format: 229-235
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  • 162
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    In:  http://aquaticcommons.org/id/eprint/15668 | 8 | 2014-11-17 19:32:57 | 15668
    Publication Date: 2021-07-09
    Description: EXTRACT (SEE PDF FOR FULL ABSTRACT):We describe a coupled local climate/isotope model that can calculate Rayleigh-type processes of distillation and fractionation of hydrogen isotopes along individual air mass flowlines in the western United States.This climate model is an extension of that detailed earlier by Craig and Stamm (1990). ... Volumetric effects of evapotranspiration (ET) are included. The model allows sensitivity studies of the influence of ET recycling.
    Keywords: Atmospheric Sciences ; Chemistry ; PACLIM
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    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 191-203
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    In:  http://aquaticcommons.org/id/eprint/15746 | 8 | 2014-11-25 22:16:58 | 15746
    Publication Date: 2021-07-10
    Description: Deterministic chaos in dynamical systems offers a new paradigm for understanding irregular fluctuations. The theory of chaotic dynamical systems includes methods that can test whether any given set of time series data, such as paleoclimate proxy data, are consistent with a deterministic interpretation. Paleoclimate data with annual resolution and absolute dating provide multiple channels of concurrent time series; these multiple time series can be treated as potential phase space coordinates to test whether interannual climate variability is deterministic. Dynamical structure tests which take advantage of such multichannel data are proposed and illustrated by application to a simple synthetic model of chaos, and to two paleoclimate proxy data series.
    Keywords: Atmospheric Sciences ; Chemistry ; Earth Sciences ; PACLIM ; dendrochronology
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    Format: application/pdf
    Format: 55-66
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  • 164
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    In:  http://aquaticcommons.org/id/eprint/15813 | 8 | 2014-12-09 00:17:41 | 15813
    Publication Date: 2021-07-10
    Description: Understanding the link between climate and regional hydrologic processes is of primary importance in estimating the possible impact of future climate change and in the validation of climate models that attempt to simulate such changes. Two distinct problems need to be addressed: quantitatively establishing the link between changes in climate and the hydrologic cycle, and determining how these changes are expressed over differing temporal and spatial scales. To solve these problems, our interdisciplinary group is studying important aspects of hydrology, paleolimnology, geochemistry, and paleontology as they apply to climate-driven hydrologic changes.
    Keywords: Atmospheric Sciences ; Chemistry ; Earth Sciences ; Limnology ; PACLIM ; hydrology
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    Type: conference_item
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    Format: application/pdf
    Format: 211-215
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  • 165
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    In:  http://aquaticcommons.org/id/eprint/16022 | 12051 | 2015-01-24 15:27:29 | 16022 | Indian Fisheries Association
    Publication Date: 2021-07-12
    Description: The treatment of sodium bicarbonate at the dosage of 100 to 1000 mg/litre has been tested experimentally on the hatching and postembryonic growth of Brachydanio rerio, Cyprinus carpio, Labeo rohita, Cirrhinus mrigala and Catla catla. Lower dosages of 100 to 200 mg have been found to reduce the hatching period, yolk absorption period and improve the survival and growth of the post embryonic larvae. The higher dosages of 500 to 1000 mg has been found to reduce the hatching percentage and post embryonic growth of the larvae. The findings indicate that application of sodium bicarbonate in the hatchery and nursery management of carps in the lower dosages of 100 to 200 mg/L to improve hatching and postembryonic growth.
    Keywords: Aquaculture ; Biology ; Chemistry ; freshwater aquaculture ; Brachydanio rerio ; Labeo rohita ; Cyprinus carpio ; Catla catla
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 89-91
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  • 166
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    In:  http://aquaticcommons.org/id/eprint/15990 | 12051 | 2015-01-19 15:54:06 | 15990 | Indian Fisheries Association
    Publication Date: 2021-07-11
    Description: Sediment samples (28) collected during the ORV Sagar Kanya cruise-29, were analysed for humic acid (HA) concentration from the North-Central Arabian Sea. Generally oceanic samples had more HA concentration than the continental shelf (〈 200 m depth) samples. The photo-acoustic infrared spectra of shelf sediment HA indicated the presence of more C-H saturated aliphatic chains, while oceanic HA had few peaks for the above groups. Both the IR spectra indicated the absence of aromatic C = C, carbonyl, ketonic groups. Clayey-silt sediment generally had higher concentration of HA compared to sandy-silt type of sediment.
    Keywords: Biology ; Chemistry ; humic acids ; sediment chemistry ; marine ; North-central Arabian Sea ; Indian western coast ; India
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    Type: article
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    Format: application/pdf
    Format: 393-399
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  • 167
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    In:  http://aquaticcommons.org/id/eprint/16141 | 12051 | 2015-02-08 09:23:42 | 16141 | Society of Fisheries Technologists, India
    Publication Date: 2021-06-29
    Description: Four species of Gracilaria are investigated for their free amino-acid contents, as well as amino-acid constituents in the proteins and the peptides, using quantitative paper chromatographic technique. Amino-acid constituents of different species of Gracilaria differ only in amount, while free amino-acids and the amino-acids in the peptides vary both in quality and quantity. A number of amino-acids recorded as protein constituents have even escaped detection in the peptides, while in the free state they occur either in all the species or in some only except homocystine. Moreover, some amino-acids occur exclusively in the free state.
    Keywords: Chemistry ; Gracilaria ; red algae ; chemical composition ; India
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    Format: application/pdf
    Format: application/pdf
    Format: 158-163
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  • 168
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    In:  http://aquaticcommons.org/id/eprint/16192 | 12051 | 2015-02-10 07:58:54 | 16192 | Society of Fisheries Technologists, India
    Publication Date: 2021-06-30
    Description: Caulerpa racemosa var. macrophysa, C. racemosa var cornyphora and C. scalpelliformis are analyzed by quantitative paper chromatographic technique for their amino acid contents in proteins, peptides and free state. It is found that no appreciable variation occurs in the quality of amino acid make up in these algae; but quantitative differences are apparent in them. Moreover, both qualitative and quantitative variations occur in the amino acid make up of the peptides, and in the free state. The results are compared with those of the other investigations.
    Keywords: Biology ; Chemistry ; amino acids ; chemical composition ; growth ; amino acid composition ; Caulerpa racemosa ; Caulerpa macrophysa ; Caulerpa cornyphora ; Caulerpa scalpelliformis ; marine ; India
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    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 187-192
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  • 169
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    In:  http://aquaticcommons.org/id/eprint/16186 | 12051 | 2015-02-09 08:11:47 | 16186 | Society of Fisheries Technologists, India
    Publication Date: 2021-06-30
    Description: The Indian standards Institution have recently laid down specifications for the grading of frozen shrimp of which the bacterial examination of the product forms a significant part. Work carried out in this regard in our laboratories have shown that various improvements could be made in the composition of the medium to obtain a more true picture of the total bacterial count. Changes in the medium for total bacterial count have, therefore, been suggested and the reasons for the same discussed.
    Keywords: Chemistry ; Fisheries ; bacterial count ; fish products ; prawns ; frozen storage ; food quality
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    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 151-154
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  • 170
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    In:  http://aquaticcommons.org/id/eprint/16188 | 12051 | 2015-02-09 08:13:42 | 16188 | Society of Fisheries Technologists, India
    Publication Date: 2021-06-30
    Description: Although considerable work has been done on the composition of fish liver oils, most of which includes the study of various vitamins and fatty acids, little attention has been paid towards the composition of fish liver as a whole.
    Description: Jafri, A.K. and Khawaja, D.K. and Qasim, S.Z. (1964) Studies on the biochemical composition of some freshwater fishes. Pt. 1. Muscle. Fishery Technology, 1(2), pp. 148-157. - Jafri, A.K. and Qasim, S.Z.(1966) Studies on the biochemical composition of some freshwater fishes. Pt. 3. Ovary. Fishery Technology, 3(1), pp. 16-20
    Keywords: Biology ; Chemistry ; liver ; biochemical composition ; freshwater fishes ; fish liver oils
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    Type: article
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    Format: application/pdf
    Format: 163-169
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  • 171
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    In:  http://aquaticcommons.org/id/eprint/16180 | 12051 | 2015-02-09 07:37:24 | 16180 | Society of Fisheries Technologists, India
    Publication Date: 2021-06-30
    Description: The preservation of prawns with boric acid, dipotassium hydrogen phosphate, sodium bisulphite, ascorbic acid, citric ascorbic acid mixture, acronise pd, foromycin and penicillin have been investigated. Acronise pd, foromycin and citric ascorbic acid mixture in the order named proved the most effective inhibitors of growth of the natural mixture flora at temperatures between -18°C and 28°C; while foromycin inhibited yeast growth and sodium bisulphite and boric acid retarded melanosis. Acronise pd caused marked inhibition of bacterial growth in 5 to 50 per ml concentration, when used as an immersion medium for 10 to 15 minutes. The other chemicals used exerted a less intense action or were without any effect.
    Keywords: Chemistry ; Fisheries ; chemical properties ; quality control ; Penaeus indicus ; processing fishery products ; cold storage ; storage effects ; chemicals ; food additives
    Repository Name: AquaDocs
    Type: article
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    Format: application/pdf
    Format: 109-114
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    South Central Environmental Center NUS Corporation | Houston, TX
    In:  http://aquaticcommons.org/id/eprint/14165 | 9596 | 2020-08-31 20:24:03 | 14165 | Galveston Bay Information Collection
    Publication Date: 2021-06-24
    Description: In May 1979, Contract No. DACW64-79-C-0037, for performance of bioassays and bioaccumulation studies, chemical analyses of sediments, seawater and elutriate materials, and appropriate statistical analyses of samples obtained from the Galveston Harbor and Sabine-Neches Waterway channels, was awarded to NUS Corporation by the Army Corps of Engineers, Galveston District. These studies are part of a continuing evaluation of the potential environmental effects of proposed ocean disposal of dredged materials and are required for compliance with provisions of Section 103 of the Marine Protection, Research and Sanctuaries Act of 1972 (PL 92-532). This final report presents the results of dredged material evaluations for the Galveston Harbor Channel project area. Channel sediments collected at designated locations in the project area were evaluated by bioassays of liquid, suspended particulate, and solid phase materials. A variety of sensitive marine vertebrates and invertebrates were used, including a fish, a crustacean, a crustacean postlarva (zooplankton), a polychaete, and a bivalve. Evaluative procedures were as established in Ecological Evaluation of Proposed Discharge of Dredged Materials into Ocean Waters (EPA/CE, 1977). The results of these bioassays showed that sediments of the Galveston Harbor Channel pose no serious or unacceptable hazard to the marine environment. The potential for bioaccumulation of selected pesticides, polychlorinated biphenyls (PCB's), heavy metals and petroleum hydrocarbons in tissues of marine organisms was evaluated by laboratory methodologies. The results of tissue analyses of sandworms and hard clams exposed to Galveston Harbor Channel sediments indicated that the concentration of all constituents analyzed was not significantly different between animals exposed to test and reference materials. There was no indication that the test animals had accumulated constituents of interest from the test materials to a greater extent than from the reference sediment. Chemical analyses for a variety of heavy metals, selected pesticides and PCB's, nitrogen derivatives, and oil and grease residues in sediments, seawater and elutriate materials were performed to define ambient concentrations of these constituents in the project environs. Many constituents exhibited no concentration above a quantifiable analytical detection limit. Several constituents (notably Aroclor 1254, arsenic, chromium, copper, lead, nickel, zinc, ammonia, nitrate, TKN, and oil and grease in sediments, and ammonia and TKN in seawater) displayed a general trend toward highest concentrations at shoreward sampling areas. Mercury was present in sediment materials throughout the project area, but was not found in excessive concentrations. The concentrations of oil and grease residues in seawater samples were highest at seaward sampling areas. It was conservatively determined that mercury concentrations in elutriate materials from all channel sampling areas would exceed the established marine water quality criterion; however, the initial mixing zone available at the designated disposal area is adequate to achieve the required dilution factors.
    Keywords: Chemistry ; Ecology ; Environment ; bioaccumulation ; bioassay ; chemical analyses ; statistical analyses ; water quality
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    Type: book_section
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    In:  john.ramsdell@noaa.gov | http://aquaticcommons.org/id/eprint/14903 | 403 | 2014-03-10 20:00:28 | 14903 | United States National Ocean Service
    Publication Date: 2021-06-28
    Description: California sea lions have been a repeated subject of investigation for early life toxicity, which has been documented to occur with increasing frequency from late February through mid-May in association with organochlorine (PCB and DDT) poisoning and infectious disease in the 1970's and domoic acid poisoning in the last decade. The mass early life mortality events result from the concentrated breeding grounds and synchronization of reproduction over a 28 day post partum estrus cycle and 11 month in utero phase. This physiological synchronization is triggered by a decreasing photoperiod of 11.48 h/day that occurs approximately 90 days after conception at the major California breeding grounds. The photoperiod trigger activates implantation of embryos to proceed with development for the next 242 days until birth. Embryonic diapause is a selectable trait thought to optimize timing for food utilization and male migratory patterns; yet from the toxicological perspective presented here also serves to synchronize developmental toxicity of pulsed environmental events such as domoic acid poisoning. Research studies in laboratory animals have defined age-dependent neurotoxic effects during development and windows of susceptibility to domoic acid exposure. This review will evaluate experimental domoic acid neurotoxicity in developing rodents and, aided by comparative allometric projections, will analyze potential prenatal toxicity and exposure susceptibility in the California sea lion. This analysis should provide a useful tool to forecast fetal toxicity and understand the impact of fetal toxicity on adult disease of the California sea lion.
    Keywords: Chemistry ; Health ; Management
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    NOAA/National Centers for Coastal Ocean Science | Oxford, MD
    In:  http://aquaticcommons.org/id/eprint/14949 | 403 | 2014-03-14 22:55:57 | 14949 | United States National Ocean Service
    Publication Date: 2021-06-29
    Description: Investigators at the Cooperative Oxford Laboratory (COL) diagnose and study crustaceans, mollusks, finfish, and a variety of other marine and estuarine invertebrates to assess animal health. This edition updates the Histological Techniques for Marine Bivalve Mollusks manual by Howard and Smith (1983) with additional chapters on molluscan and crustacean techniques. The new edition is intended to serve as a guide for histological processing of shellfish, principally bivalve mollusks and crustaceans. Basically, the techniques included are applicable for histopathological preparation of all marine animals, recognizing however that initial necropsy is unique to each species. Photographs and illustrations are provided for instruction on necropsy of different species to simplify the processing of tissues. Several of the procedures described are adaptations developed by the COL staff. They represent techniques based on principles establishedfor the histopathologic study of mammalian and other vertebrate tissues, but modified for marine and aquatic invertebrates. Although the manual attempts to provide adequate information on techniques, it is also intended to serve as a useful reference source to those interested in the pathology of marine animals. General references and recommended reading listed in the back of the manual will provide histological information on species not addressed in the text.
    Description: This edition updates the Histological Techniques for Marine Bivalve Mollusks manual by Howard and Smith (1983) with additional chapters on molluscan and crustacean techniques.
    Keywords: Chemistry ; Fisheries
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    Type: monograph
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    Format: application/pdf
    Format: 218
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    NOAA/National Centers for Coastal Ocean Science | Silver Spring, MD
    In:  http://aquaticcommons.org/id/eprint/14947 | 403 | 2014-03-14 23:06:34 | 14947 | United States National Ocean Service
    Publication Date: 2021-06-29
    Description: This chapter describes the procedures for determining the reproductive stage of oysters, mytilid mussels, and dreissenid mussels collected for NOAA’s National Status and Trends Mussel Watch Project. Analyses are conducted on paraffin-embedded tissues sectioned at a 5-μm thickness and stained using a pentachrome staining procedure. Each slide is examined microscopically to determine the animal’s sex and stage of gonadal development. A semi-quantitative ranking is assigned.
    Keywords: Chemistry ; Fisheries ; Pollution
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    Type: monograph
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    Format: application/pdf
    Format: 64
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  • 176
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    In:  http://aquaticcommons.org/id/eprint/15050 | 403 | 2014-05-27 14:22:56 | 15050 | United States National Marine Fisheries Service
    Publication Date: 2021-06-24
    Description: This study examines genetic variation at five microsatellite loci and at the vesicle membrane protein locus, pantophysin, of Atlantic cod (Gadus morhua) from Browns Bank, Georges Bank, and Nantucket Shoals. The Nantucket Shoals sample represents the first time cod south of Georges Bank have been genetically evaluated. Heterogeneity of allelic distribution was not observed (P〉0.05) between two temporally separated Georges Bank samples indicating potential genetic stability of Georges Bank cod. When Bonferroni corrections (α=0.05, P〈0.017) were applied to pairwise measures of population differentiation and estimates of FST, significance was observed between Nantucket Shoals and Georges Bank cod and also between Nantucket Shoals and Browns Bank cod. However, neither significant differentiation nor significant estimates of FST were observed between Georges Bank and the Browns Bank cod. Our research suggests that the cod spawning on Nantucket Shoals are genetically differentiated from cod spawning on Browns Bank and Georges Bank. Managers may wish to consider Nantucket Shoals cod a separate stock for assessment and management purposes in the future.
    Keywords: Chemistry ; Ecology ; Fisheries
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    U.S. Fish and Wildlife Service | Washington, DC
    In:  http://aquaticcommons.org/id/eprint/15544 | 222 | 2014-10-21 21:43:11 | 15544 | United States Fish and Wildlife Service
    Publication Date: 2021-07-08
    Description: For some time pollution of the waters of the Delaware River by municipal and industrial wastes has been suspected of playing a major role in the decline of the shad fishery. Accordingly, studies were planned to ascertain whether any conditions of water quality caused by stream pollution and harmful or lethal to shad were existant in the waters of the Delaware River during the migration periods of the shad.
    Description: 19-page report plus figures and tables.
    Keywords: Chemistry ; Environment ; Limnology ; Pollution ; stream pollution
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    Type: monograph
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    Format: application/pdf
    Format: 57
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  • 178
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    In:  http://aquaticcommons.org/id/eprint/15568 | 8 | 2014-11-06 00:55:50 | 15568
    Publication Date: 2021-07-08
    Description: Upper Pleistocene sediments on the continental slope off Northern California contain alternations of varves and bioturbation produced by fluctuations in intensity of the coastal upwelling system. Stable isotopic analyses of benthic Foraminifera across a particularly well developed varve/bioturbation sequence deposited ~26,000 years ago reveal rapid shifts of ~0.25‰ in δ18O and ~0.4‰ in δ13C. The δ18O shift occurs within a varved section. Based on varve counts, the isotopic change occurred in less than 100 years. Timing and magnitude of the shift coincide with similar shifts observed in almost all other high-resolution δ18O records that have been interpreted as primarily representing global in-volume fluctuations.
    Keywords: Chemistry ; Earth Sciences ; Oceanography ; PACLIM
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    Format: application/pdf
    Format: 83-86
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  • 179
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    In:  http://aquaticcommons.org/id/eprint/15618 | 8 | 2014-11-10 23:19:39 | 15618
    Publication Date: 2021-07-09
    Description: EXTRACT (SEE PDF FOR FULL ABSTRACT):We have measured coral growth band thickness and skeletal stable isotopic composition through a 371-year transect (AD 1583-1954) from a massive specimen of Pavona clavus from the Galápagos Islands. ... We observe a general cooling trend during 1860-1954, corresponding to the end of the Little Ice Age, an interval characterized by general warming at many mid-latitude sites. Variance at sunspot cycle frequencies in growth rate, stable isotopic, and trace element composition implies a direct or indirect link between the solar cycle and climate modulation in the eastern Pacific.
    Keywords: Atmospheric Sciences ; Chemistry ; Earth Sciences ; Oceanography ; PACLIM
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    Format: application/pdf
    Format: 165-178
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  • 180
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    In:  http://aquaticcommons.org/id/eprint/15621 | 8 | 2014-11-10 23:48:14 | 15621
    Publication Date: 2021-07-09
    Description: EXTRACT (SEE PDF FOR FULL ABSTRACT):A high resolution, AMS carbon-14-dated sediment record from the Sulu Sea clearly indicates the Younger Dryas climatic event affected the western equatorial Pacific. Presence of the Younger Dryas in the tropical western Pacific indicates this climatic event is not restricted to the North Atlantic nor to high latitudes, but is global in extent.
    Keywords: Chemistry ; Earth Sciences ; Oceanography ; PACLIM ; Ocean Drilling Program
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    Format: application/pdf
    Format: 205-215
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  • 181
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    In:  http://aquaticcommons.org/id/eprint/15751 | 8 | 2014-11-26 20:04:52 | 15751
    Publication Date: 2021-07-10
    Description: Like pages of a "natural coastal diary", successive layers of anoxic varved sediment in the central Santa Barbara Basin have been used by paleoceanographers to reconstruct aspects of past coastal climate. This report focuses on the end of the "Little Ice Age" (15th to 19th century) and on the beginning of this century, a period known to encompass extreme climate excursions and weather events in the Santa Barbara Basin and other parts of Southern California. El Niño events are known to disrupt Southern California's coastal ecosystems and to cause anomalous weather conditions, but El Niño events in Southern California before 1990 have been largely undocumented.
    Keywords: Atmospheric Sciences ; Chemistry ; Earth Sciences ; Oceanography ; PACLIM
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    Format: application/pdf
    Format: 93-105
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  • 182
    Publication Date: 2021-07-10
    Description: Time series analysis methods have traditionally helped in identifying the role of various forcing mechanisms in influencing climate change. A challenge to understanding decadal and century-scale climate change has been that the linkages between climate changes and potential forcing mechanisms such as solar variability are often uncertain. However, most studies have focused on the role of climate forcing and climate response within a strictly linear framework. Nonlinear time series analysis procedures provide the opportunity to analyze the role of climate forcing and climate responses between different time scales of climate change. An example is provided by the possible nonlinear response of paleo-ENSO-scale climate changes as identified from coral records to forcing by the solar cycle at longer time scales.
    Keywords: Atmospheric Sciences ; Chemistry ; Oceanography ; PACLIM ; dendrochronology
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    Format: application/pdf
    Format: 47-54
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  • 183
    Publication Date: 2021-07-10
    Description: EXTRACT (SEE PDF FOR FULL ABSTRACT):Coral-based reconstruction of past variability of sea surface conditions is improving our understanding of the tropical ocean-atmosphere system. We present oxygen isotope records from corals collected near the tip of Baja California (Baja) and the Gulf of Panama (Saboga).
    Keywords: Chemistry ; Oceanography ; PACLIM
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    Format: application/pdf
    Format: 203-203
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  • 184
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    In:  http://aquaticcommons.org/id/eprint/15808 | 8 | 2014-12-08 23:45:19 | 15808
    Publication Date: 2021-07-10
    Description: EXTRACT (SEE PDF FOR FULL ABSTRACT):Clipperton Atoll (10°18'N, 109°13'W), lies within the eastern Pacific elongated warm water pool centered at 10°N and is situated at the boundary of the North Equatorial Counter-Current (NECC) and westward-flowing eddy currents moving away from Central America. ... Fifteen coral cores were collected from massive heads of Porites lobata in April 1994 for the purpose of reconstructing oceanographic and climatic conditions at this open ocean site in the eastern Pacific.
    Keywords: Chemistry ; Oceanography ; PACLIM
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    Format: application/pdf
    Format: 201-201
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  • 185
    Publication Date: 2021-07-10
    Description: EXTRACT (SEE PDF FOR FULL ABSTRACT):High-resolution oxygen-18 and total inorganic carbon (TIC) studies of cored sediments from the Owens Lake Basin, California, indicate that Owens Lake was hydrologically open (overflowing) most of the time between 52,500 and 12,500 carbon-14 YBP. ... The lack of a strong correspondence between North Atlantic climate records and the Owens Lake delta-oxygen-18 record has two possible explanations: (1) the sequence of large and abrupt climate change indicated in North Atlantic records is not global in scope and is largely confined to the North Atlantic and surrounding areas, or (2) Owens Lake is located in a part of the Great Basin that is relatively insensitive to the effects of climate perturbations recorded in the North Atlantic region.
    Keywords: Atmospheric Sciences ; Chemistry ; Earth Sciences ; Limnology ; PACLIM ; hydrology
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    Format: application/pdf
    Format: 217-230
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  • 186
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    In:  http://aquaticcommons.org/id/eprint/15871 | 12051 | 2014-12-31 08:46:08 | 15871 | Indian Fisheries Association
    Publication Date: 2021-07-11
    Description: One of the chalkones synthesised in the author's laboratory was selected to determine its toxicity to fish, Lepidocephalicthys thermalis at different concentrations and time periods. Ascorbic acid contents were determined and it was found to be antitoxic.
    Keywords: Biology ; Chemistry ; detoxification ; vitamin C ; ascorbic acid ; freshwater fishes
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  • 187
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    In:  http://aquaticcommons.org/id/eprint/15925 | 12051 | 2015-01-16 08:49:14 | 15925 | Indian Fisheries Association
    Publication Date: 2021-07-11
    Description: Bioassay were carried out on 48h cultured nauplii of brine shrimp Artemia by exposing them to seven trace elements viz. copper (Cu), zinc (Zn), cadmium (Cd), nickel (Ni), lead (Pb), iron (Fe) and manganese (Mn). Synergistic effects of all these elements and additive effects of Cu and Zn, Cd and Pb, and Ni and Fe were also investigated. Comparatively, the degree of toxicity for compound bioassays was higher than individual simple tests. The values were averaged and the expected median lethal concentration [LC sub(50)] of tested heavy metals was obtained by probit analysis on the basis of cumulative numbers of dead organisms after 24 and 48h. The order of toxicity of the metals to Artemia was Pb〉Cd〉Cu〉Ni〉Zn〉Fe〉Mn. Potency ratios of the seven metals were also calculated. The 24 and 48h variations obtained in LC sub(50) values were significantly different and relative implications of these are discussed.
    Keywords: Chemistry ; bioassays ; toxicity tests ; brine shrimp culture ; heavy metals ; Artemia ; marine
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    In:  http://aquaticcommons.org/id/eprint/15933 | 12051 | 2015-01-16 08:57:26 | 15933 | Indian Fisheries Association
    Publication Date: 2021-07-11
    Description: Some biochemical variations during ovarian vitellogenic growth in hill-stream teleost Garra mullya due to sublethal concentration of cadmium has been discussed. Total protein, cholesterol and glycogen in ovary and liver along with gonadosomatic index (GSI) and hepatosomatic index (HSI) in Cd-treated fish exhibited significant decrease while liver glycogen remained unaltered.
    Keywords: Biology ; Chemistry ; freshwater fish ; cadmium ; sublethal effects ; toxicity tests ; biochemical composition ; ovaries ; Garra mullya ; freshwater
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  • 189
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    In:  http://aquaticcommons.org/id/eprint/16054 | 12051 | 2019-06-11 14:51:27 | 16054 | University of Karachi. Marine Reference Collection and Resource Centre
    Publication Date: 2021-06-26
    Description: Zooplankton standing crop and proximate principals were estimated for 8 coastal and 13 oceanic stations of the northern Arabian Sea during March 1991. Biomass did not show any significant difference (p 〈 0.05) between coastal and oceanic waters. Protein was the principal biochemical component among proximate principals with an average value of 29.6% in coastal and 34.2% in the oceanic zone, suggesting that protein form a major metabolic reserve. Other components such as lipids and carbohydrate seem to be low in tropical zooplankton. The organic carbon and caloric density did not show significant correlation. Average caloric density was 2.5 k.cal super(-1). The average standing stock was 9.25 mg m super(-3) and 5.90 mg m super(-3) for coastal and oceanic water, respectively. Coastal region is more productive than oceanic region in terms of standing crop, as expected.
    Keywords: Biology ; Chemistry ; coastal waters ; biomass ; biochemical composition ; chemical composition ; zooplankton ; marine ; Arabian sea
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  • 190
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    In:  http://aquaticcommons.org/id/eprint/16021 | 12051 | 2015-01-24 15:25:59 | 16021 | Indian Fisheries Association
    Publication Date: 2021-07-12
    Description: The present paper deals with the physico-chemical data of 13 rainfed and drainable dry bundhs of Bhilwara District (India). All the dry bundhs studied showed a slightly alkaline pH ranging from 7.5 to 8.5. Electrical conductivity ranged from 2 to 8 millimhos/cm. Organic carbon in sediment fluctuated from 0.30 to 0.75%. Nitrogen, phosphate and potassium levels were fairly good, at 30 to 50 and 24 to 36 mg/100 g of soil respectively. Based on these data it was inferred that these dry bundhs were highly productive and suitable for freshwater fish culture.
    Keywords: Aquaculture ; Chemistry ; embankments ; freshwater aquaculture ; soil quality ; Bhilwara district ; Rajastan ; India
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  • 191
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    In:  http://aquaticcommons.org/id/eprint/16025 | 12051 | 2015-01-26 09:30:42 | 16025 | University of Karachi. Marine Reference Collection Centre
    Publication Date: 2021-06-25
    Description: Hypnea musciformis (Wulf.) Lamour., H. pannosa J. Ag. and H. valentiae (Turn.) Mont., collected from the northern Arabian Sea coast of Pakistan, have been investigated for their fatty acid compositions through GC-MS. Palmitic acid was present in largest quantity (55-57%) and oleic was the major (7.6-8.4%) unsaturated fatty acid. Pentacosanoic and hexacosenoic acids are being reported for the first time from any species of Hypnea. The three species differed remarkably due to their habitat ecology.
    Keywords: Biology ; Chemistry ; Fatty acid ; Hypnea spp. ; Rhodophyta ; Karachi ; Pakistan
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    Format: application/pdf
    Format: 7-10
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  • 192
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    In:  http://aquaticcommons.org/id/eprint/16142 | 12051 | 2015-02-09 08:07:50 | 16142 | Society of Fisheries Technologists, India
    Publication Date: 2021-06-29
    Description: The course of development of a few free amino acids under the influence of aureomycin in oil sardine (Sardinella lingiceps) held in ice storage was investigated. The levels of leucines and valine regularly increased in the control and aureomycin treated fush throughout the storage period. Alanines and threonine showed similar trend in both control and fish treated with 20ppm aureomycin. These amino acids however showed a gradual fall in fish treated at 5 ppm level. The changes in tyrosine+tryptophane were found to be irregular. Most of the amino acids studied indicated a remarkable change in trend by about the 16th day of ice storage in the case of fish treated with 50ppm aureimycin.
    Keywords: Chemistry ; Fisheries ; aureomycin ; Sardinella longiceps ; storage conditions ; antibiotics
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    Format: application/pdf
    Format: 164-167
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  • 193
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    In:  http://aquaticcommons.org/id/eprint/16123 | 12051 | 2015-02-04 13:38:56 | 16123 | University of Karachi. Marine Reference Collection and Resource Centre
    Publication Date: 2021-06-28
    Description: Microalgae play an important role in conditioning water quality for penaeid larval culture. Recently it has been demonstrated that a modification of the green water larval culture system (Ling, 1969) for Macrobrachium allows the production of post larvae without any water change, despite extensive use of artificial feeds (Ang and Cheah, 1986). Increase of toxic metabolites such as ammonia and nitride are also common in penaeid larval culture, especially where excessive amounts of artifial feeds are employed. Present work examines the use of six marine microalgae at four cell concentrations as a "biological filter" system, to control and detoxify levels of ammonia and nitrite in P. monodon larval culture water whilst using artificial diet. Preliminary results indicate that amongst the six algal species tested, C. japonica at 1000 cell μlˉ¹ was most effective in reducing accumulated toxic metabolites from an unchanged culture water environment.
    Keywords: Biology ; Chemistry ; microalgae ; ammonia ; nitrite ; shrimp larval feed trial
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  • 194
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    In:  http://aquaticcommons.org/id/eprint/16140 | 12051 | 2015-02-08 09:22:57 | 16140 | Society of Fisheries Technologists, India
    Publication Date: 2021-06-29
    Description: Twenty five different species belonging to 16 genera of freshwater fishes were analysed for protein, fat, moisture, ash, carbohydrate, phosphorus, calcium and total iron content in their muscle. Calorific value for protein, fat and carbohydrate fractions and total calories for each species were also calculated.
    Description: Jafri, A.K. and Qasim, S.Z. (1965) Studies on the biochemical composition of some freshwater fishes. Pt. 2. Liver. Fishery Technology, 2(2), pp. 163-169.
    Keywords: Biology ; Chemistry ; freshwaters fishes ; biochemical composition ; nutritive value ; India
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    Format: 148-157
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  • 195
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    In:  http://aquaticcommons.org/id/eprint/16178 | 12051 | 2015-02-09 07:34:01 | 16178 | Society of Fisheries Technologists, India
    Publication Date: 2021-06-30
    Description: Certain features characterise spoilage of sea foods, as distinct from spoilage of protein foods in general. Among sea foods spoilage differs in the crustaceans, teleosts, or elasmobranchs respectively. High levels of free amino acids concentrations are characteristic of prawns and other crustacean muscle. Changes occurring in these influence pattern of spoilage. Differences also exist in the sea prawns and prawns taken from the backwaters. Melanosis is a characteristic feature of spoilage in prawns. Observations have shown that prawns are very susceptible to spoilage at ordinary temperature, the period of absolute freshness not exceeding 4 hours, while prompt icing extends the period to 3-5 days.
    Keywords: Chemistry ; Fisheries ; biochemical analysis ; spoilage ; biodegradation ; temperature effects ; prawns ; seafood conservation
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    Format: application/pdf
    Format: 98-101
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  • 196
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    In:  http://aquaticcommons.org/id/eprint/16215 | 12051 | 2015-02-12 15:17:22 | 16215 | Society of Fisheries Technologists, India
    Publication Date: 2021-07-01
    Description: Biochemical composition of the muscle of juveniles belonging to 18 different species of freshwater fishes showed that the protein percentage in juveniles was higher than the adults. The fat, on the other hand, was much lower. This suggests that the body fat increases with the onset of maturity. No clear inverse relationship was found between fat and protein in juveniles. Moisture percentage was very high in juveniles. This was probably because of low fat content. In most species the sum of fat and water contents (F + W) was found to be constant. The percentages of ash, calcium and phosphorus were higher in juveniles than those of adults. Dry matter percentage varied inversely with the moisture and in most species carbohydrate was generally low. In juveniles although the calorific value of protein-fraction was high the total calorific value was lower than the adults.
    Keywords: Biology ; Chemistry ; biochemical composition ; muscle ; freshwater fishes ; growth
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  • 197
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    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19369 | 17435 | 2016-01-17 10:12:32 | 19369 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Publication Date: 2021-06-26
    Description: This study looked at improving knowledge base capacity and enhance capacity to address marine pollution and water quality monitoring issues in Myanmar. Significant capacity needs were identified and a follow up plan presented.
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Chemistry ; Pollution ; Myanmar ; marine pollution ; water quality monitoring ; capacity building ; integrated coastal zone management ; Norwegian Institute for Water Research
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    Type: monograph
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    Format: application/pdf
    Format: 34
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  • 198
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    In:  http://aquaticcommons.org/id/eprint/18873 | 12051 | 2015-11-26 12:38:26 | 18873 | Bangladesh Fisheries Research Institute
    Publication Date: 2021-07-12
    Description: An experiment was conducted to evaluate the effects of control of carbon/nitrogen ratio (C/N ratio) by addition of low cost carbohydrate to the water column on water quality and pond ecology in freshwater prawn Macrobrachium rosenbergii post-larvae nursing system. In this experiment, two level of dietary protein 20% and 35% without carbohydrate addition (‘P20' and ‘P35') and with carbohydrate addition (‘P20+CH' and ‘P35+CH') were compared in small ponds of 40 m² area stocked with 20 post-larvae (0.021 ± 0.001g) per m² . Maize flour was used as low cost carbohydrate and applied to the water column followed by the first feeding during the day. The addition of carbohydrate significantly reduced (p〈 0.05) ammonia-nitrogen (NH sub(3)-N) and nitrite-nitrogen (NO sub(2) - N) of water in P20 + CH and P35 + CH treatments. It significantly increased (p〈 0.05) the total heterotrophic bacteria (THB) population both in water and sediment. Fifty nine genera of plankton were identified belonging to the Bacillariophyceae (11), Chlorophyceae (21), Cyanophyceae (7), Dinophyceae (1), Rotifera (7) and Crustacea (9) without any significant difference (p〉0.05) of total phytoplankton and zooplankton among the treatments. Survival rate of prawn was significantly lowest (p〈0.05) in P20 and no significant difference (p〉0.05) was observed between P20+CH and P35 treatments. Control of C/N ratio by the addition of low-cost carbohydrate to the pond water column benefited the freshwater prawn nursing practices in three ways (1) increased heterotrophic bacterial growth supplying bacterial protein augment the prawn post-larvae growth performances, (2) reduced demand for supplemental feed protein and subsequent reduction in feed cost and (3) reduced toxic NH sub(3)-N and NO sub(2)-N levels in pond nursing system.
    Keywords: Aquaculture ; Chemistry ; Macrobrachium rosenbergii ; freshwater prawns ; carbon/nitrogen ratio ; carbohydrate ; heterotrophic bacteria
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    Islamic Azad University, Science and Research Branch, Tehran, Fisheries
    In:  http://aquaticcommons.org/id/eprint/19475 | 17408 | 2016-01-25 09:48:26 | 19475 | Islamic Azad University, Science and Research Branch, Tehran
    Publication Date: 2021-06-29
    Description: Fish sauce is a popular fermented product used in south Asian countries which is made from different small fishes in this research work it was attempted to produce fish sauce from kilka of the Caspian sea, the fish sauce was made from three models of kilka ,such as whole kilka , cooked whole kilka and dressed kilka , each of these models treated it four different fashions of fermentation such as:1- Traditional method, 2- Enzymatic method 3- Microbial method, 4- Mixture of enzyme and microb The results of this investigation showed that time of fermentation for the traditional method was six month, enzymatic method one month, microbial method 3 month and the mixture of enzyme and microb 1 month. The rate of fermentation was least for dressed Kilka, microbial and biochemical changes of Kilka fish sauce were evaluated, total bacterial count was 2.1-6.15 log cfu/ml total volatile nitrogen (TVN) in samples recorded was 250 mg /100g, the amount of protein varied between 10-13 percent, the name of commercial enzymes added was Protamex and Flavourzyme, the bacteria added was L act ob acillus and Pediococous, fish sauce containers fish and 20% salt, temperature of keeping for fermentation was 37 degree c for 6 month.
    Description: PhD
    Description: Advisors: S. Moini Counsellors: A. keyvan, Gh. Vosoughi
    Keywords: Aquaculture ; Chemistry ; Fisheries
    Repository Name: AquaDocs
    Type: thesis
    Format: application/pdf
    Format: application/pdf
    Format: 176
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    In:  library@seafdec.org.ph | http://aquaticcommons.org/id/eprint/20036 | 2002 | 2016-03-04 16:34:38 | 20036 | Southeast Asian Fisheries Development Center, Aquaculture Department
    Publication Date: 2021-07-07
    Keywords: Chemistry ; Chitin ; Exoskeleton ; Mineral composition ; Organic compounds ; Shells ; Waste utilization
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: pp.34, 38
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