In this article we will discuss about the interactions between host and parasite. Host-specificity: its dynamic quantities: (i) Usually related species and genera of parasites are found to attack closely related host-species. (ii) In some cases, the parasite may be mono-specific attacking a single host species, this situation often indicates an old association and co-evolution. (iii) Such mono-specificity is recorded [...]
The following points highlight the three different types of symbiosis seen in animals. The types are: 1. Mutualism 2. Commensalism 3. Parasitism. Symbiosis: Type # 1. Mutualism: Mutualism can be defined as a relationship between two different species in which both partners are benefitted or the association in which mutual metabolic dependency occurs. Mutualism is of two types: (i) Facultative [...]
In this article we will discuss about Phylum Rotifera:- 1. Taxonomic History of Phylum Rotifera 2. Characteristics of the Phylum Rotifera 3. Classification 4. Affinities. Taxonomic History of Phylum Rotifera: 1. Leeuwenhock (1703) first discovered rotifers with his newly invented microscopes. 2. Linnaeus and Lamarck regarded rotifers as protozoa. 3. Ehrenberg (1838) also placed rotifers in a distinct class under [...]