Barnacle goose Barnacle goose The barnacle goose ("Branta leucopsis") belongs to the genus "Branta" of black geese, which contains species with largely black plumage, distinguishing them from the grey "Anser" species. Despite its superficial similarity to the brant goose, genetic analysis has shown it is an eastern derivative of the cackling goose lineage. The barnacle goose was first classified taxonomically by Johann Matthäus Bechstein in 1803. "Branta" is a Latinised form of Old Norse "Brandgás", "burnt (black) goose" and the specific epithet is from the Ancient Greek "leukos" "white", and "opsis" "faced". The barnacle goose and the similar brant goose were previously
Crustacean larva and hatch with a full complement of adult appendages with the exceptions of the uropods and the first pair of pleopods. The larvae of the Achelata (slipper lobsters and spiny lobsters) are unlike any other crustacean larvae. The larvae are known as "phyllosoma", after the genus "Phyllosoma" erected by William Elford Leach in 1817. They are flattened and transparent, with long legs and eyes on long eyestalks. After passing through 8–10 phyllosoma stages, the larva undergoes "the most profound transformation at a single moult in the Decapoda", when it develops into the so-called "puerulus" stage, which is an immature form