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Females lay their eggs then die immediately after. The males, however, can fertilize many females in a short period of time before they die. Females lay the eggs in well-protected areas scattered around the reefs. After competing with 2-5 other males, the largest male approaches the female and gently strokes her with his tentacles.
Perhaps the best video of a live colossal squid is that of an animal recorded at the surface in the D'Urville Sea off Antarctica in January 2008. [21] The squid was pulled to the surface feeding on a line-caught toothfish. The video is likely the first to show a colossal squid swimming freely, and records the animal performing a slow roll on ...
This species is part of the smallest known squid genus, growing only to 16 mm (0.63 in) in mantle length. [3] [4] Females tend to be larger than males, and the presence of nidamental glands for secretion of egg jelly differentiates them from males. [5] Males can be identified by the presence of a singular white testis found posteriorly in the ...
Once the egg masses are laid, females migrate to deep waters, a strategic move to evade potential predators. [8] Encased within a black jelly-like substance, the eggs reside in individual chambers connected by a delicate membrane. [9] Each egg is oval in shape, and range in size from 2.0 mm to 3.0 mm in length, and 1.8 mm to 2.1 mm in width. [9]
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 longfin inshore squid spawns year-round and lives for less than one year. "Eggs are demersal. Enclosed in a gelatinous capsule containing up to 200 eggs. Each female lays 20-30 capsules. Fecundity ranges from 950–15,900 eggs per female. Laid in masses made up of hundreds of egg capsules from different females."
Gladius, showing measurement of rachis and vane. The gladius (pl.: gladii), or pen, is a hard internal bodypart found in many cephalopods of the superorder Decapodiformes (particularly squids) and in a single extant member of the Octopodiformes, the vampire squid (Vampyroteuthis infernalis). [1]
The size of the egg mass correlates with the size of the female that laid it; large females can lay egg masses up to 3–4 m in diameter, [36] while smaller females lay egg masses about one meter in diameter. Records of egg masses are extremely sparse because they are rarely encountered by humans, but from the few masses found to date, the egg ...