This paper presents the findings of a field survey carried out within small scale fishing communities on the island of Zanzibar in 2004. The study was designed to assess the impact of the Menai Bay marine protected area on the livelihoods of fishing households located within its boundaries using the...
The report is an analysis of the resource rent in the Swedish fishery, produced as a contribution to the new strategic plan for the Swedish fishery in the years 2007-2013 according to the draft EU regulation for the EFF (European Fishery Fund). A model has been produced based on linear...
Many Fraser River sockeye salmon stocks show large cycles in abundance from year to year, but the causes of these
cycles are not clear. As a result, these stocks have historically been managed under the hypothesis of cyclic dominance,
i.e., maintaining the cyclic behaviour of the stocks. Biological studies and...
A central objective for UK Department for International Development (DFID) funded research on
renewable natural resource systems has been that the research commissioned results in significant positive
developmental impacts. This paper describes the outcomes of activities employed by the DFID funded
Fisheries Management Science Programme to assess the developmental impact...
This study investigates the adjustment process of labor in the fishing industry of the Spanish regions
(Autonomous Communities). The analysis is based on a dynamic model applied to a panel of the 10
coastal regions in Spain for the period covering 1965 to 2001. A translog labor demand equation is...
We study the combined effects of periodically varying carrying capacity and survival rates on the fish population in the ocean (sea). We introduce a new delay differential equation model with a control parameter which describes how fish are harvested.
We consider a predation function as the function of the delayed...
By using harvest data for a North East Arctic Cod Fishery in the Barents Sea for the years 1971-1985 a monthly and
daily dimensional harvest function is estimated. The seasonal factors are investigated using dummy variables. The
results indicate that the seasonality is embodied in the catch ability coefficient of...
When dealing with time, a fishery manager faces a major difficulty. On an N-period time horizon, should he follow
several short-run objectives for every n sub-period, or should he consider only the long-run objective? If a European
manager trying to implement a stock recovery plan prefers to achieve the long-run...
Historically, the fishery has been the mainstay of the Newfoundland economy. Inevitably, its importance declined as
economic development proceeded, but was still quite substantial at the time of Confederation with Canada in 1949.
Since then, however, the census figures show a precipitous decline in the role of the fishery in...
The Virginia Fishery Resource Grant Program funded a two year grow-out trial to assess the
feasibility and economic activity associated with proposed introduction of non-native oysters in
Virginia's Chesapeake Bay waters. This paper summarizes the results of the trials which were
conducted to address two main objectives: determine the economic...
In the context of the restriction of production, French agriculture modifies its activities by developing multifunctionality. This concept translates the fact that, beyond the saleable production of agricultural and food processing products, the agricultural activity fulfills other functions: economic, social, environmental. Multifunctionality of agriculture is implemented in a number of...
In the world, Japan has a special place in the fish consumption, as Japanese people are among the most important consumers of aquatic food products, and Japan ranks first as fish importer, for supplying about half of its market. Thus the changes in the Japanese seafood market are susceptible to...
In 2004, United States (U.S.) shrimp landings comprised 11% of shrimp available to the domestic market. Asian and
South America shrimp imports to the U.S. began reaching record levels in 2001, following European Union tariffs
on Asian shrimp. The increased import supply resulted in drastic decline of ex-vessel and wholesale...
Tilapia exports to the US have been claimed to double in the last three years following the two bans on
Vietnamese catfish imports in November 2001 and June 2003. The aim of these bans was to restrict
imports from the major exporter of Catfish (Vietnam) reducing competition for US catfish...
Linear approximate almost ideal demand system was employed to estimate demand for Thai frozen shrimp in the United States of America, the main importing country for Thai frozen shrimp. Import demands for the same products from Bangladesh, China, Ecuador, India, Indonesia, Mexico, and Vietnam were simultaneously estimated to compare with...
This paper considers the implications of the sustainability agenda for seafood processors
in the UK. A systems approach, using the value chain system as the conceptual
framework, is adopted to capture the multifaceted and often subjective nature of
‘sustainability’ and accommodate the changing nature of competitive advantage. It is
concluded...
The purpose of this study is to discuss, develop and test the relationship among perceived quality
performance, consumer satisfaction and two different format of loyalty toward seafood. We frame our discussion
with the purpose of drawing together streams from the quality-satisfaction research, loyalty literature, attitude
research and from research on...
This study analyses seafood consumption at home in Spain using three different cross sections (1980,
1990, and 1998). Price indices for seafood and other items are calculated for each household. The
empirical analyses consists of the estimation of double hurdle models of seafood consumption for each
survey, separately. Socio-economic variables...
If a scientist can predict the weather (poorly)
Why cannot he predict fish yields (yet more poorly)? – a clerihew by Chris Corkett.
Recent long term historical studies of commercial fisheries have pointed to a well established pattern of overfishing. Under the principle of transference – what is true in...
After 1950 traditional herring fisheries were revolutionized by a new technique: sonar, power block, larger
nets and bigger boats. As a result all major herring stocks in the North East Atlantic Ocean collapsed. The
most dramatic decline was that of the Atlanto-Scandian stock between Iceland and Norway from millions
of...
Freshwater fish species and Baltic salmon are important to small-scale fisheries in Finland and Sweden.
The formerly local markets for these species have expanded as the food trade has been opened up
to international competition. In this study we use cointegration analysis to test the spatial integration of
freshwater fish...
The world’s output of farmed fish has grown steadily over the past two decades or so. Most
notably in the UK, since the mid 1980’s, a rapid increase in farmed salmon production has taken
place. Given that many of the world’s oceans are overfished, many see aquaculture as a method...
Non-radial measure of technical efficiency of fish farms in Oyo State was examined using Data Envelopment Analysis (DEA). Use of the non-radial measures to calculate overuse of inputs by inefficient fish farmers was demonstrated and the potential for reducing inputs used by improving efficiency was evaluated. Ordinary Least Square (OLS)...
Fishmeal is a critically important feed ingredient for use in animal (e.g., poultry and pork) and
aquaculture production (e.g., salmon, trout, and shrimp). There is concern that demand for fishmeal may
place additional stress on the world’s pelagic fisheries and may undermine the sustainability of some
aquaculture systems that rely...
Key decision variables in aquaculture management are stocking level, feeding schedule, temperature
control and batch length. In many management problems with an infinite planning horizon, the aim is to
find the batch length which results in maximum return if the same batch length applies to all future
batches. This may...
The optimal harvesting time in a fish farm is analyzed in the paper. Fish population is assumed to be heterogeneous with respect to weight, so a distributed parameter dynamic model is considered. Theoretical and numerical results are obtained and compared with the ones concerning homogeneous fish cultures only. The results...
The sinking of the oil tanker the Prestige in November 2002 off the coast of Galicia in Spain had an
important social, environmental and economic impact. The aim of this paper is to carry out an initial
analysis of the costs relating to a halt in the activity of an...
This study addresses the matter of logistic improvement of live food fish trade by economic analyses of pertinent information provided by the live fish traders in 2004 on three species of live fish: sand goby, sea bass, and grouper. The analyses take into consideration the logistics cost, break-even point, market...
The harvesting strategies in open access marine fishery and marketing patterns of marine products have
undergone rapid structural changes in the post liberalisation era of the Indian Economy. There is a
continuous increase in demand and price of the fish both in domestic and export markets and the thrust on...
In 1976 global exports for fish and fisheries products was approximately $8 billion. In 2000,
global exports exceeded $55 billion. The period between 1985 and 1995 witnessed the tripling
of global fisheries exports. This represents more than half of total value of global fisheries
production. Developing countries began to increase...
The security of world fish supply from wild fisheries and from aquaculture is an increasing concern due to dwindling yields from wild catch and undesirable ecological impacts of aquaculture. The extent to which aquaculture can substitute for fish from wild catch will depend on the productivity of aquaculture, which in...