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  • 1
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    IOCARIBE and inter-country cooperation in the Caribbean (2021)
    In:  http://aquaticcommons.org/id/eprint/12316 | 15 | 2013-11-25 21:32:39 | 12316 | Gulf and Caribbean Fisheries Institute
    Details
    Publication Date: 2021-06-29
    Description: Item includes an abstract in Spanish.
    Keywords: Fisheries ; GCFI
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 147-151
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  • 2
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    Genetic analysis of juvenile coho salmon (Oncorhynchus kisutch) off Oregon and Washington reveals few Columbia River wild fish (2021)
    In:  http://aquaticcommons.org/id/eprint/15153 | 403 | 2014-05-29 07:09:24 | 15153 | United States National Marine Fisheries Service
    Details
    Publication Date: 2021-07-03
    Description: Little is known about the ocean distributions of wild juvenile coho salmon off the Oregon-Washington coast. In this study we report tag recoveries and genetic mixed-stock estimates of juvenile fish caught in coastal waters near the Columbia River plume. To support the genetic estimates, we report an allozyme-frequency baseline for 89 wild and hatchery-reared coho salmon spawning populations, extending from northern California to southern British Columbia. The products of 59 allozyme-encoding loci were examined withstarch-gel electrophoresis. Of these, 56 loci were polymorphic, and 29 loci had P0.95 levels of polymorphism. Average heterozygosities within populations ranged from 0.021 to 0.046 and averaged 0.033. Multidimensional scaling of chord genetic distances between samples resolved nine regional groups that were sufficiently distinct for geneticmixed-stock analysis. About 2.9% of the total gene diversity was due to differences among populations within these regions, and 2.6% was due to differences among the nine regions. This allele-frequency data base was used to estimate the stock proportions of 730 juvenile coho salmon in offshore samples collected from central Oregon to northern Washington in June and September-October 1998−2000. Genetic mixed-stock analysis, together with recoveries of tagged or fin-clipped fish, indicates that about one half of the juveniles came from Columbia River hatcheries. Only 22% of the ocean-caught juveniles were wild fish, originating largely from coastal Oregon and Washington rivers (about 20%). Unlike previous studies of tagged juveniles, both tag recoveries and genetic estimates indicate the presence of fish from British Columbia andPuget Sound in southern waters. The most salient feature of genetic mixed stock estimates was the paucity of wildjuveniles from natural populations in the Columbia River Basin. This result reflects the large decrease in the abundances of these populations in the last few decades.
    Keywords: Biology ; Ecology ; Fisheries
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 640-652
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  • 3
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    Assessment of sampling methods to estimate horseshoe crab (Limulus polyphemus L.) egg density in Delaware Bay (2021)
    In:  http://aquaticcommons.org/id/eprint/15159 | 403 | 2014-05-29 07:17:36 | 15159 | United States National Marine Fisheries Service
    Details
    Publication Date: 2021-07-03
    Description: Each spring horseshoe crabs (Limulus polyphemus L.) emerge from Delaware Bay to spawn and deposit their eggs on the foreshore of sandy beaches (Shuster and Botton, 1985; Smith et al., 2002a). From mid-May to early June, migratoryshorebirds stopover in Delaware Bay and forage heavily on horseshoe crab eggs that have been transported up onto the beach (Botton et al., 1994; Burger et al., 1997; Tsipoura and Burger, 1999). Thus, estimating the quantity of horseshoe crab eggs in Delaware Bay beaches can be usefulfor monitoring spawning activity and assessing the amount of forage available to migratory shorebirds.
    Keywords: Fisheries ; Management
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 698-703
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  • 4
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    The Invasion of Indo-Pacific lionfish in the Bahamas: challenges for a National Response Plan. (2021)
    In:  http://aquaticcommons.org/id/eprint/15380 | 31 | 2014-09-28 15:25:48 | 15380 | Gulf and Caribbean Fisheries Institute
    Details
    Publication Date: 2021-07-06
    Keywords: Fisheries ; GCFI
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 404-408
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  • 5
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    The Kendal, Lancaster and Preston canal fishery (2021)
    Lancashire River Authority | Halton, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11102 | 1256 | 2013-04-03 15:27:01 | 11102 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the Kendal, Lancaster and Preston canal fishery produced by Lancashire River Authority in 1970. The Kendal-Lancaster-Preston canal commenced at Stainton in Westmorland and terminated on the outskirts of Preston. Fishing in the canal with rod and line was controlled by the Northern Anglers’ Association. In the early 60’s anglers, had complained about, the extremely low numbers of fish that had been caught in the canal and various opinions had been expressed concerning the alleged shortages o f fish. Since 1967, in an endeavour to meet the fish re-stocking demands of the Association, 50,000 freshwater fish of different species had been introduced by the Lancashire River Authority, but catches had not increased. In 1969 was agreed by the Northern Anglers’ Association to carry out a study of the fish populations throughout the whole length of the canal and the chemical quality of the water analysed. This report is not produced as a scientific dissertation, but rather as a means of imparting to members of the Northern Anglers’ Association the fish potential available to them in their endeavours to catch fish.
    Description: Environment Agency Archives North West
    Description: + 1 map
    Keywords: Fisheries ; Limnology ; Management ; England ; Kendal-Lancaster-Preston canal ; Inland waters ; Rivers ; Freshwater fishes ; Migratory species ; Fishery data ; Fish population survey ; Fish size frequency distribution ; Fish density ; Water quality ; Parasitology ; Electrofishing
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 44
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  • 6
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    Modification of behavioral and morphological deficits in hatchery-reared Queen Conch (Strombus gigas, L.): a preliminary report (2021)
    In:  http://aquaticcommons.org/id/eprint/13341 | 9596 | 2014-02-03 08:05:38 | 13341 | Gulf and Caribbean Fisheries Institute
    Details
    Publication Date: 2021-06-27
    Keywords: Fisheries ; GCFI
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 80-86
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  • 7
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    Report upon the commercial fisheries in the Lancashire River Authority Area and their effect upon rod angling and spawning stock in the rivers and particularly the River Lune (2021)
    Lancashire River Authority | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/7730 | 1256 | 2012-02-09 16:00:20 | 7730 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-05
    Description: The stock of salmon in any river is largely dependent upon the escapement of sufficient fish to ensure that an adequate quantity of ova is deposited and full use is made of all suitable spawning areas. At the present time, no accurate information is available on the numbers of fish entering rivers. Therefore, catch returns provide valuable information on fish stocks.This report summarises the catch returns for salmon in the Lancashire River Authority in the North of England for the years 1960-1964. Rivers included are the Lune, Ribble, Kent, Leven and Duddon.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Lune Catchment ; Salmon fisheries ; River fisheries ; Rivers ; Catch statistics ; Fishery regulations ; Salmo trutta ; Salmo salar ; Fish counters ; Fishing nets
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 11
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  • 8
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    Variations in eastern North Pacific demersal fish biomass based on the U.S. west coast groundfish bottom trawl survey (2003–2010) (2021)
    In:  http://aquaticcommons.org/id/eprint/8681 | 403 | 2012-06-07 14:47:05 | 8681 | United States National Marine Fisheries Service
    Details
    Publication Date: 2021-06-25
    Description: In response to declining biomass of Northeast Pacific groundfish in the late 1990s and to improve the scientific basis for management of the fishery, the Northwest FisheriesScience Center standardized and enhanced their annual bottomtrawl survey in 2003. The survey was expanded to include the entire area along the U.S. west coast at depths of 55–1280 m. Coast-wide biomass and species richness significantly decreased during the first eight years (2003–10) of this fishery-independent survey. We observed an overall tendency toward declining biomass for 62 dominant taxa combined (fishery target and nontarget species) andfour of seven subgroups (including cartilaginous fish, flatfishes, shelf rockfishes, and other shelf species),despite increasing or variable biomass trends in individual species. These decreases occurred during a period of reduced catch for groundfish along the shelf and upper slope regions relative to historical rates. We used information from multiple stock assessments to aggregate species into three groups: 1) with strong recruitment, 2) without strong recruitment in 1999, and 3) with unknown recruitment level. For each group, we evaluated whether declining biomass was primarily related to depletion (using year as a proxy) or environmental factors (i.e., variation in the Pacific Decadal Oscillation). According to Akaike’sinformation criterion, changes in aggregate biomass for species with strong recruitment were more closely related to year, whereas those with no strong recruitment were more closely related to climate. The significant decline in biomass for species without strong recruitment confirms thatfactors other than depletion of the exceptional 1999 year class may be responsible for the observed decrease in biomass along the U.S. west coast.
    Keywords: Biology ; Ecology ; Fisheries
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 205-222
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  • 9
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    Defining plausible migration rates based on historical tagging data: a Bayesian mark-recapture model applied to English sole (Parophrys vetulus) (2021)
    In:  http://aquaticcommons.org/id/eprint/8863 | 403 | 2012-06-18 09:42:19 | 8863 | United States National Marine Fisheries Service
    Details
    Publication Date: 2021-06-28
    Description: A generalized Bayesian population dynamics model wasdeveloped for analysis of historical mark-recapture studies. The Bayesian approach builds upon existing maximumlikelihood methods and is useful when substantial uncertainties exist in the data or little information isavailable about auxiliary parameters such as tag loss and reporting rates. Movement rates are obtained throughMarkov-chain Monte-Carlo (MCMC) simulation, which are suitable for use as input in subsequent stock assessmentanalysis. The mark-recapture model was applied to English sole (Parophrys vetulus) off the west coast of the United States and Canada and migration rates were estimated to be2% per month to the north and 4% per month to the south. These posterior parameter distributions and the Bayesian framework for comparing hypotheses can guide fishery scientists in structuring the spatial and temporal complexity of future analyses of this kind. This approach could be easily generalized for application to other species and more data-rich fishery analyses.
    Keywords: Biology ; Ecology ; Fisheries
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 470-484
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  • 10
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    An overview of the Coastal Zone Management Program in the United States (2021)
    In:  http://aquaticcommons.org/id/eprint/12006 | 9600 | 2013-11-13 18:13:53 | 12006 | Gulf and Caribbean Fisheries Institute
    Details
    Publication Date: 2021-06-30
    Keywords: Fisheries ; GCFI
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 7-13
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