Distribution of Plankton: Types, Factors and Examples

Plankton (sing. Plankter) is a diverse group of organisms that live in water and cannot swim against the water current. They are used as an important food source for a variety of aquatic organisms such as fish and whales. Distribution of plankton varies. They are floating organism such as various animals, protists, archaea, algae or … Read more

Nutrient Requirements in Fish

Aquatic farming, especially fish farming, has increased dramatically in the last few decades. The aquaculture industry is the fastest growing food production industry in the world. From this sector people get about 50% of the fish production. Significant progress has been made in fish nutrition in recent years. A balanced commercial diet has been developed … Read more

Lotic Ecosystem : Types and Characteristics

The term lotic comes from Latin lotus meaning washing. It is a running water bodies such as streams and rivers. Lotic or flowing ecosystem is river channels and other related aquatic environments creek, brook, spring, or stream. They vary in size and shape. It includes small waterfalls to various big sized river water bodies. This … Read more

Pond: Types, Characteristics and Ecological Zonation

Pond is a small body of stagnant water which is smaller than a lake. Ponds can be either nature-created or man-made. The marsh, aquatic plants and various aquatic animals live mainly in the pond water. Various animals depends on the water level of the pond, food level, presence of plants, presence of harmful animals, confirmation … Read more

Ancyclostoma duodenele: Morphology, Life Cycle and Pathogenesis

Ancyclostoma duodenele is a parasitic nematode worm which is commonly known as old world hookworm. The anterior end of the worm is bent dorsally and thus the name hook worm. It has wide geographical distribution but mostly found in tropical regions. The adult worms live in the small intestine particularly in jejunum, less often in … Read more

Limnology: Definition, History & Development and Its Importance

The word Limnology comes from two Greek words. Greek ‘Limnos’ means lake or submerged body of water and Greek ‘Logos; means knowledge. Therefore, the search for knowledge on the lake is the main topic of limnology. From the origin of this branch to the present day, various scientists have defined limnology in different ways. Below … Read more