Fish Farming Guide
Horses, pigs, and other farm animals. The Chinese liver fluke, Clonorchis sinensis, is an important parasite of humans and other fish-eating mammals in Far Eastern countries. Fish farming in east Asia is a major source of fluke infections in people. In other areas, dogs and cats serve as reservoir hosts of C. sinensis. Paragonimus westermani, the lung fluke, infects humans, cats, dogs, and rats. Occurences of this fluke are extremely prevalent in the people of China, the Philippines, Thailand, and other Asian countries.
Ascidians have no direct and important significance to humans. Like many other marine organisms, they are a potential source for bioactive chemicals that may be used in pharmacology. Also, several species are consumed as food in some countries, for example, Japan. Some species may cause problems in fish farming operations, growing on the bottoms of ships and negatively affecting operations such as mussel and oyster cultivation.
Humans will be the ultimate receivers of changes in marine ecosystem structure. An obvious direct concern would be the need to re-evaluate the use of our marine resources should climate change and our own activities threaten the supply of food. FAO projections for 2100 suggest that the amount of fish protein per capita would at best be similar to 1998 levels, and at worse about a third lower. Global change can reduce this even further. Improving our use of the 25 of the total fish catch that is discarded annually as by-catch is a priority, as may be the use of the landed catch. In this regard about 25 of the total fish landed is used for animal feeds, often inefficiently. For example the proportion offish meal supplies used for farming fish has risen from 10 in 1988 to 33 in 1997, both reflecting a trend towards farming carnivorous fish as well as the desire to increase the growth of non-carnivorous species. Such trends bring into question whether in the future fish farming will...
Branchiurans are ectoparasites of fishes, but are occasionally reported from the tadpoles of amphibians. They live mainly in freshwater habitats, both running and static water, and may occur at high density in artificial water bodies such as reservoirs, ornamental fishponds, and fish farms. A few species of Argulus infest estuarine and coastal marine fishes, but they do not occur in oceanic waters. Branchiurans are important pests in fish culture facilities, mainly in freshwater facilities, but occasionally in marine fish farms.
Download Tilapia Farming Guide Now
Free versions of Tilapia Farming Guide can not be found anywhere on the net.