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...
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 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...
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 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...
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...
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...
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...
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)...
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...