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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

The role of fisheries resources in national development: a review

100%
Rabo P. D., Zarmai D. U., Jwanya B. A., Dikwahal S. H.
International Letters of Natural Sciences
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2014
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tom 13
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nr 1
This paper on the role of Fisheries resources in National development is aimed at highlighting the role of Fishery products in Nation building. Fishery products of finned Fish species like Cod, Flounder, Salmon, Catfish, Goldfish, Sea urchins, Shrimps, King crab, Halibut, Mollusk and Echinoderms that come from both capture Fisheries and Aquaculture provide employment, food security, improves welfare, nutrition and a healthy population. Also serve for International trade and foreign exchange in goods like Leather and polishing materials that come from the skin of Cartilagenous Fishes. Ice Fish, dried and canned Fishery products, Salmon roe (egg) and Fish oil used for the manufacture of Soap and Medicinal Oils like the Cod Liver Oil. Fish intake also reduces the condition atherosclerosis thereby combating cardiovascular diseases. However, the Fishery Subsector has some constraints such as by Catch, improper funding, poor input Facilities, Poverty in Fishing Communities, Water barriers, effect of climate change and lack of comprehensive Man power development and training programmes. It is therefore recommended that Government, Donor agencies and international trade unions make effort to increase the educational and capital base of small-scale Farmers; distinguish between Farmed and Wild products, provides Comprehensive Man power and training programmes for all Cadre, providing transportation systems for better appreciation and Productivity in the fishery sub-sector. Laws and by-laws should also be enacted to prevent indiscriminate fishing to avoid over exploitation and extinction of our Aquatic Species.
2

Development of a resource assessment system for Baltic coastal fish stocks with perch [Perca fluviatilis L.] as a model species

100%
Thoresson G., Kangur M., Repecka R., Saat T., Vitinsh M.
Bulletin of the Sea Fisheries Institute
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1997
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nr 3
3

A mixed count data with known class analysis to the recreational fishing trips demand

84%
Bilgic A., Florkowski W. J.
Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu
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2004
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tom 06
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nr 6
4

An analysis of the impacts of climatic variability and hydrology on the coastal fisheries, Engraulis encrasicolus and Sepia officinalis, of Portugal

84%
Ullah H., Leitao F., Baptista V., Chicharo L.
International Journal of Ecohydrology and Hydrobiology
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2012
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tom 12
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nr 4
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Application of Minkowski's metric in measuring changes of concentration of value added in agriculture, forestry, fishing and hunting sectors

84%
Binderman Z., Borkowski B., Szczesny W.
Acta Scientiarum Polonorum. Oeconomia
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2015
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tom 14
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nr 1
This work is a direct continuation of a previous work by the authors that dealt with construction of new coeffi cients of concentration by using Minkowski’s metric ρp(1 ≤ p ≤ ∞). The following work gives examples of applications of those metrics in agriculture, forestry, fi shing and hunting sectors. It also studies the pattern of changes of concentration of added value created in those sectors by comparisons with other sectors.
6

First report of fishing in the European Blackbird Turdus merula

84%
Raes A., Lefebvre L., Jordaens K.
Acta Ornithologica
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2008
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tom 43
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nr 2
231-234
During two hours of observation, a female Blackbird made approximately 30 attempts to catch fish, 20 of which were successful. The bird watched and followed a minnow shoal in shallow parts of the river, hopping from stone to stone in a way that resembled its normal behaviour when catching earthworms. The bird only caught small individuals (5-7 cm). Larger individuals were present in the river but were not seen within the shoal and were not attacked.
7

A comparative analysis of food components in fish populations from the Buzau River basin (Romania)

84%
Ureche D., Nicoara M., Ureche C.
Oceanological and Hydrobiological Studies
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2008
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tom 37
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nr Suppl.1
8
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Ecological analysis of fishing in estuary lakes, Gardno and Wicko, in the years 1952-1991

84%
Orzechowski B.
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
|
1997
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tom 01
9

Effectiveness of fishing in shallow lakes using different methods

84%
Rechulicz J.
Acta Scientiarum Polonorum. Piscaria
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2006
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tom 05
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nr 2
10

Use of subsidies for scrapping of fishing vessels by their beneficiaries

83%
Polish Food
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2007
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nr 1
11

Trawling implements which are commonly used on Polish fishing vessels

83%
Szydlowski R.
Magazyn Przemysłu Rybnego
|
1998
|
nr Spec.iss.
12

SPO rowniez na hodowle ryb

67%
Serafin J.
Biuletyn Informacyjno-Handlowy. Ośrodek Doradztwa Rolniczego Boguchwała
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2004
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nr 12
6-7
13

Catches of the sport fishing competitions along the Algarve Coast (Portugal): species, sizes, catch rates, and trends

67%
Guerreiro A. I., Veiga P., Erzini K.
Acta Ichthyologica et Piscatoria
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2011
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tom 41
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nr 3
Background. Stocks of many marine fishes are in decline and a number of studies suggest that for some species the impact of recreational angling may be important. To date, only recreational (leisure) fishing surveys have been conducted in Portugal, with no studies on beach angling competitions, dynamically increasing in number over the past 10 to 20 years. In view of the above, we decided to evaluate the impact of such events on the Algarve coast (southern Portugal) in terms of the abundance, diversity, and respective weight of fish species caught and outline some conservation measures and recommendations for the management of the targeted species. Materials and methods. Participants of 22 angling competitions taking place between February and June 2007 were surveyed. In each competition a random sample of anglers was interviewed, and the specimens caught by each participant were identified, weighed, and measured. Results. Thirteen taxa belonging to eight families were identified, and the most common were: garfish, Belone belone (Linnaeus, 1761); mullets,Mugilidae (not identified); and mackerels, Scomber spp. A total of 563 specimens were sampled, totalling 75.4 kg of weight, with the average catch per angler weighing 0.5 ± 0.05 SE (n = 153) kg. Differences were also observed between the length at first maturity (L50) of the specimens caught and their respective Minimum Landing Size (MLS) and Allowed Minimum Size (AMS), most particularly in the case of the European seabass, Dicentrarchus labrax (L.), with almost all individuals caught measuring below the speciesspecific L50. Analysis of time series of competition results (1996–2009) showed no evidence of a decrease in catches or in mean weight. Conclusion. Based on the results we propose that the AMS for beach angling competitions should be increased to the MLS in order to prevent the capture of juvenile fishes, especially the sea bass. Future studies should address the size selectivity of the hooks used in beach competitions, with a view to the implementation of a minimum hook size for competitions.
14
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Biomass dynamics of fishing in estuarine lakes Lebsko and Sarbsko

67%
Orzechowski B., Obolewski K.
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
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2008
|
tom 12
The research has shown the domination of fluctuative trends in the biomass dynamics for a major-ity of the caught fish species and decrease in the stocks of littoral phytophil fish. The main reason of the fishery breakdown of the pike perch in Łebsko and perch in Sarbsko was exploitation at a too big scale. The resources of the mentioned fish populations were drastically violated in the first decade of the 47 years of exploitation, that is in the years: 1952-1999. However, the highest fishing level of most of the fish species in annual cycles was achieved notoriously at spawning pe-riods during the whole 47 years. It just goes to show a complete ignorance of valid periods and the protective dimensions in the fishery practice. In the consecutive decades and for all the 47 years, the position and the degree of mass dominance for separate species of fish in fishing have been es-tablished. Pairs of superdominants and eudominants with the greatest quantitative participation in fishing have been distinguished for each of the lake. For the regeneration of the pike’s, the tench’ and the crucian carp’ population fishing of those species should be banned for the time of their generation. Reduction to small Cyprynidae species should be conducted by intensive stock in Łebsko with the pike and in Sarbsko with the pike-perch.
15

Analiza i ocena wedkarskiego uzytkowania jeziora Pluszne

67%
Drzewicki A.
Acta Academiae Agriculturae ac Technicae Olstenensis. Protectio Aquarum et Piscatoria
|
1995
|
tom 20
71-82
16

Fishing pattern and interactions of fleet components in the Argyrops spinifer (Actinopterygii: Perciformes: Sparidae) fisheries of the Arabian Sea, Oman

67%
Al-Mamry J., Ben Meriem S., McCarthy J. D., Richardson C. A.
Acta Ichthyologica et Piscatoria
|
2011
|
tom 41
|
nr 1
Background. The influx of foreign fishing vessels in the Arabian Sea, during the mid 1990’s, has sparked some conflicts between artisanal and industrial fleets and raised concerns related to the resource management implications of fish stocks in the region. To address the lack of management data on the basic biology and stock assessment for targeted species, the Ministry of Fisheries Wealth in Oman initiated this study with a view to contributing towards the development of a management plan for the sustainable exploitation of the living resources of the sea in this region. Materials and methods. A database including biological parameters, length-frequency distributions and catches of king soldier bream, Argyrops spinifer (Forsskål, 1775), in Oman according to fleet (gear/technique) and region was compiled by monthly sampling in 2001 to 2002. In this study, length cohort and yield per recruit analyses were examined after simulating changes in fishing effort, in length at first capture and introducing a closed season for trawlers. Results. The results showed that: (i) the status of the stock is healthy, the average fishing mortality rate is moderate (0.1) and acts in general on the adult fraction of the stock. The fishing pattern differs, however, among fleets with some fleet components fishing, in part, for immature king soldier bream. (ii) An increase in total fishing effort would not lead to any long-term substantial increase of the catch (according the uncertainty of M value); however, the spawning stock biomass would decrease significantly. This measure affects negatively fleets that target the larger specimens. (iii) A moderate (±20%) modification of minimum length limit in catches would not affect, substantially, the sustainable yield and the spawning stock biomass. (iv) Any regulation of trawler fishing by closed season (i.e. restricted trawler activities during some seasons) would not have a significant effect on the long-term yield. Conclusion. The current pattern of exploitation and fishing effort acting on the A. spinifer stock are optimal and no changes to global fishing or length at first capture are recommended. Also, with the actual fishing effort of trawlers, no closed season is suggested. However, fleet components whose catches include some juvenile fraction should adopt more selective gear as used by the hand line fishery in the Al-Wusta region.
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