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Caught lobsters are graded as new-shell, hard-shell, or old-shell. Because lobsters that have recently shed their shells are the most delicate, an inverse relationship exists between the price of American lobster and its flavor. New-shell lobsters have paper-thin shells and a worse meat-to-shell ratio, but the meat is very sweet.
Soft-shells (lobsters that have only recently molted) do not survive more than a few hours out of water. Lobsters are usually cooked alive, [57] which may be illegal in certain areas [58] and which some people consider inhumane. [59] [60] Lobster 'tail' (actually the abdomen) is sometimes served with beef as surf and turf. [61]
Spiny lobsters do not have the gonopods (first pleopods modified for reproduction) that occur in clawed lobsters and crabs, and females do not have a deep pocket on the sternum in which to store sperm. [11] Instead, a spermatophore is transferred directly from one of the male's gonopores to the sternum of the female. The male gonopore is ...
The eggs develop here for 3 to 5 months. Eggs then metamorphose into naupliosoma larva which leave the female and are free swimming plankton which migrate towards the surface where they moult into a phyllosoma larva. [6] The rock lobster has among the longest larval development known for any marine creature.
In the South American freshwater genus Aegla, the young hatch from the eggs in the adult form. [1] Squat lobsters pass through four, or occasionally five, larval states, which have a long rostrum, and a spine on either side of the carapace; the first post-larva closely resembles the adult. [1]
On this European lobster, the right claw (on the left side of the image) is the crusher and the left claw is the cutter.. Homarus gammarus is a large crustacean, with a body length up to 60 centimetres (24 in) and weighing up to 5–6 kilograms (11–13 lb), although the lobsters caught in lobster pots are usually 23–38 cm (9–15 in) long and weigh 0.7–2.2 kg (1.5–4.9 lb). [3]
These signals are funneled through the tubes and create images just like the lobsters’ eyes do. This invention may prove important in locating stolen or illegal goods. Image credits: Aoxue W.
Spiny lobsters can be easily distinguished from true lobsters by their very long, thick, spiny antennae, by the lack of chelae (claws) on the first four pairs of walking legs, although the females of most species have a small claw on the fifth pair, [6] and by a particularly specialized larval phase called phyllosoma.