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The hemipenis is the intromittent organ of Squamata, [4] which is the second largest order of vertebrates with over 9,000 species distributed around the world. They differ from the intromittent organs of most other amniotes such as mammals, archosaurs and turtles that have a single genital tubercle, as squamates have the paired genitalia remaining separate. [5]
The ventral side (underside) of a female American lobster, a member of the class Malacostraca. The gonopores are at the bases of the third walking leg, pointing towards the animal's tail. A gonopore, sometimes called a gonadopore, is a genital pore in many invertebrates.
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 ...
Lobsters do not need their claws to eat. Their mandibles (mouth parts) have hard parts that can crush shells and rip legs off other crustaceans. As long as their gills are moist and their body ...
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]
Months later, the teams across Ripley's aquariums have dug deeper into what could be causing the lobsters' bright hue. "Lobster shells have three layers and each layer is a different color ...
Pseudocopulation: [25] the acorn barnacle uses its long penis to reach across to transfer sperm to another individual nearby. [26] Most barnacles are hermaphroditic, producing both eggs and sperms. A few species have separate sexes, or have both males and hermaphrodites. The ovaries are located in the base or stalk, and may extend into the ...