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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 ...
The blanket octopus male is an example of sexual-evolutionary dwarfism; females grow 10,000 to 40,000 times larger than the males and the sex ratio between males and females can be distinguished right after hatching of the eggs. [128] Egg cases laid by a female squid
The adult female colossal squid has been discovered in much shallower waters, which likely implies that females spawn in shallower waters, rather than their normal depth. [3] Additionally, the colossal squid has a high possible fecundity reaching over 4.2 million oocytes which is quite unique compared to other squids in such cold waters. [42]
On the arms, there are small suckers that act as suction cups and are used to better grasp prey. Male and female bobtail squid have two tentacles that are longer than the arms and are used for capturing prey. [9] Male bobtail squid have an extra arm called the hectocotylus which holds and transfers spermatophores to females. [4]
A physical display resembling zebra stripes, known as 'saddle-striped,' is used to defend a female from other males in female-male pairings. The female response to this display determines whether mating occurs. Once approved by the female, males lay their spermatophore at the base of the female's tentacles. Only half of the time does this ...
The male almost certainly dies shortly after mating. [3] There is competition between the males; multiple male arms have been found in the mantle cavity of females. [3] The females carry more than 100,000 eggs attached to a sausage-shaped calcareous secretion held at the base of the dorsal arms and carried by the female until hatching. [5]
In argonauts, the male transfers the spermatophores to the female by putting its hectocotylus into a cavity in the mantle of the female, called the pallial cavity. This is the only contact the male and female have with each other during copulation, and it can be at a distance. During copulation, the hectocotylus breaks off from the male.
Cephalopods have radula's which are similar to tongues that help them grind up the food they eat so they can digest it. Reproduction occurs once in a lifetime because cephalopods die shortly after reproducing. During mating the male squid uses a specialized arm called a hectocotylus [6] to fertilize the female with his sperm.