Impact of Temperature on Aqua Culture in Birnin Kebbi Local Government

Among the various physical factors influencing the aquatic environment, temperature is of great importance and it plays a critical role in the life of aquatic poikilotherms, temperature is consider as abiotic master factor. Therefore, temperature exerts a major influence on the biological activity and growth of aquatic organisms. Fish, insects, zooplankton, phytoplankton and other aquatic species all have chosen temperature ranges. As temperatures get too far above or below this preferred range, the number of individuals of the species decreases until finally there are few, or none. A thriving trout (fresh water fish) fishery in ponds or shallow lakes is rarely seen because the water is too warm throughout the ice-free season. Temperature is also important because of its influence on water chemistry. The rate of chemical reactions generally increases at higher temperature, which in turn affects biological activity. An important example of the effects of temperature on water chemistry is its impact on oxygen. Warm water holds less dissolved oxygen that cool water, so it may be saturated with oxygen but still not contain enough for survival of aquatic life. Some compounds are also more toxic to aquatic life at higher temperatures. Changes in temperature affect aquatic life as it determines which organisms will thrive and which will diminish in numbers and size. For each organism there is a thermal death point. Also there is a range of temperature of that produces optimal abundance. The effects of temperature upon life of a cold blooded are profound. These animals have coped with temperature problems in different ways. Not only the organism survival, but growth and reproduction of each organism have critical temperature ranges. Each organism must be favored by the proper temperature if the individual or their populations are going to survive.