Fish Production in China. Transportation of Fish Eggs, Fry and Young.

摘要

The proper transportation and handling of fish eggs and fry is a vital part of any fish production system. Careful planning is important. The first thing to decide is the type of container to be used to hold the fish. There are buckets and barrels of many sizes and designs, each with different characteristics. A second consideration is the density to which the fry should be packed in the container. This must be as dense as possible to save space and money, but not so dense as to kill the fish. The two most important factors in determining the maximum allowable density are water temperature and dissolved oxygen levels. Fish fry and eggs are shipped by three major means: by land, by water, and by air. This involves either trucks, trains, boats, airplanes, or human labor. Each method has advantages for different situations. During any form of transportation, water maintenance is necessary. If some sort of method for replenishing dissolved oxygen is used, replacement of water can be put off, but still not avoided. The source of fresh water must be inspected carefully before it is used. Clean pond water appears to be best. Any temperature difference between old and new water should be minimized. In more recent years, cultivation of mullet species has become prominent, moving in with the more traditional species, the carps and the bigheads. Most of the techniques used for the transportation of all species, including mullet, apply to their eggs. (Author)