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Georges Cuvier's original illustration of an octopus hectocotylus, which he named Hectocotyle octopodis. A hectocotylus (pl.: hectocotyli) is one of the arms of male cephalopods that is specialized to store and transfer spermatophores to the female. [1]
The male squid then inserts a spermatophore, or a sperm packet, near where the female will store the sperm until she is ready to lay eggs. The male Sepioloidea lineolata can also remove sperm from another male if he detects it in the female. He removes the sperm using a specialized arm shaped like a spoon.
Pterygioteuthis giardi is a species of squid in the family Pyroteuthidae. It is known as the roundear enope squid. The specific name honors the French zoologist and marine biologist Alfred Mathieu Giard (1846-1908). [3] Pterygioteuthis giardi from Carl Chun's Die Cephalopoden
Marine Patch says that they can dive 2,000 meters, or about 6,200 feet for up to two hours while hunting giant squid, sharks, skates, and fish. "Squid just so happens to be the sperm whales ...
Compared with other cuttlefish or squid, its taste is thinner and sweeter, and it is generally used to stir-fry, stir-fry or eat as sashimi. [8] U. chinesis when compared to other squid species like U. edulis seems to grow faster and have larger mantles. [12] This could attribute to people preferring U. chinesis over other squid species for eating.
A unique aspect of the reproduction of this species has been well studied. The female has two sperm-storage sites in its body. There are two types of males, the larger "consort" males and the smaller "sneaker" males. Consorts insert sperm into the oviduct of the female, and sneakers place sperm into specialized tissue near the female's mouth. [6]
The squid lives at depths of 10 to 500 metres (33 to 1,640 ft). It attains sexual maturity at about one year old and lives 1 to 2 years, with a maximum life span of about 3 years. It generally breeds only once. The male delivers sperm into the mantle of the female using structures on a specialized tentacle.
Arms and buccal mass of the squid Taningia danae.As in other Octopoteuthidae, the tentacles are absent in adults. Oral view of the bobtail squid Semirossia tenera Head and limbs of the bobtail squid Rossia glaucopis Oral view of male Bathypolypus arcticus with hectocotylus on arm III (left) Cephalopod suckers and configuration of suckers on tentacular club Serrated suckers of a giant squid ...