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 [...]
In this article we will discuss about Phylum Acanthocephala:- 1. Characters of Phylum Acanthocephala 2. Classification of Phylum Acanthocephala 3. Affinities. Characters of Phylum Acanthocephala: Phylum Acanthocephala includes a large number of parasitic worms. The most typical forms are Acanthocephalus, Neoechinorhynchus, Gigantorhynchus. They are parasites in the intestine of different vertebrates ranging front fish to mammals. The anterior end of [...]
The following points highlight the four main types of pigments found in the blood of animals. The types are: 1. Haemoglobin 2. Haemocyanin 3. Chlorocruorin 4. Haemerythrin. Type # 1. Haemoglobin: A haemoglobin (Hb) molecule is a conjuÂgated protein, because it consists of a simple protein and with a non-protein part. The non-protein part is called prosthetic group. The protein [...]