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2 Anatomy and physiology. ... Diagram of octopus from side, with gills, ... the female giant Pacific octopus attaches strings of small fertilised eggs (10,000 to ...
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.
Like many other octopuses, the blanket octopus uses ink to intimidate potential predators. [7] Also, when threatened, the female unfurls her large net-like membranes that spread out and billow in the water, greatly increasing her apparent size. Blanket octopuses usually live in coral reefs, where they hunt for food, which consists of small fish.
The common blanket octopus or violet blanket octopus (Tremoctopus violaceus) [4] is a large octopus of the family Tremoctopodidae found worldwide in the epipelagic zone of warm seas. The degree of sexual dimorphism in this species is very high, with females growing up to two meters in length, whereas males grow to about 2.4 cm.
Amphioctopus aegina, commonly referred to as the marbled octopus or the sandbird octopus, [2] is a bottom dwelling species residing in the coastal zone of the Indo-West Pacific. [ 3 ] Planktonic hatchlings and eggs are laid by females predominantly during the months of January and October, however they have been known to reproduce year-round.
The optic gland in female octopuses is associated with their maternal behavior of guarding their eggs without feeding. [2] This self-starvation results in the death of the female octopus before her eggs have hatched. [3] In captivity, some starving females also self-mutilate and entangle their arms in an apparent effort to die even faster.
Recently, scientists have witnessed a species of octopus, the gloomy octopus (Octopus tetricus), engaging in even more extraordinary acts than previously Find Out Why These Octopuses Throw Things ...
This refers to when the male is ready to mate with a female, the arm can detach and release sperm to impregnate the female octopus. The large ampulla and the elongate accessory gland lie out among the internal reproductive organs, notable among mature males alongside its reproductive anatomical counterparts. [4]