The upcoming discussion will update you about the difference between male and female prawn. Difference # Male Prawn: 1. Among the specimens of same age, the size of male prawn is large. 2. Abdomen is narrow in male prawn. 3. Walking legs are closely set. 4. Second walking leg is strongly developed and with numerous spines. 5. Appendix masculina is [...]
In this article we will discuss about Trilobites:- 1. Introduction to Trilobites 2. Habit and Habitat of Trilobites 3. Structure 4. Development 5. Affinities. Introduction to Trilobites: These groups of arthropods have no living members and are represented only by fossils. Altogether 19 genera are known to have had included nearly 4000 species. A fossil trilobite was first discovered in [...]
In this article we will discuss about Sacculina:- 1. History of Sacculina 2. Life History of Sacculina 3. Duration of Life Cycle 4. Effects of Parasitism. History of Sacculina: (i) Delage (1884) carried out many researches on Sacculina carcina. (ii) Among others, Smith (1906), Boschema (1931) worked on parasitic cirripeds. (iii) Smith (1910-1911) and Giard (1911- 1913) have shown that [...]