Social Structure, Reproduction, Development

Development

The female lobster reaches sexual maturity in 5 to 7 years of age, at a carapace length of 75-80mm, and the male at a slightly smaller size. Mating usually occurs between a hard-shelled male and a soft, newly-moulted female.

The lower edge of each tail segment, beneath the abdomen, is smooth or blunt; The first pair of swimmerets are soft and feathery; The genital pores of female are located at the base of the third pair of legs

European lobster (Homarus gammarus) develops through three pelagic larval stages (stages I, II and III), a postlarval stage (stage IV) and then reaches the juvenile stage which marks the complete transition to a benthic lifestyle 

reproduction

Mating usually occurs between a hard-shelled male and a soft, newly-moulted female. The sperm is transferred from the male via ducts situated at the base of the last pair of walking legs, to the sperm receptacle on the female. 

Females breed every two years. Female lobsters carry their eggs (known as berries) beneath their abdomen, attached to structures called spinnerets. The number of eggs is related to the size of the female, and is typically about 5,000 eggs for a 10 in (25 cm) long female, and 40,000 for a 14 in (36 cm) long animal.

social structure

His evidence for this is the fact that lobsters also have hierarchies. Human lineage diverged from arthropods long before lobsters evolved, so lobster hierarchy clearly developed independently of any human societal structures.