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Hectocotylus
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A hectocotylus is one of the arms of male cephalopods that is specialized to store and transfer spermatophores to the female. Structurally, hectocotyli are muscular hydrostats. Depending on the specie
Georges Cuvier's original illustration of an octopus hectocotylus. Mistaking it for its own separate organism, he named it Hectocotyle octopodis.
Georges Cuvier's original illustration of an octopus hectocotylus. Mistaking it for its own separate organism, he named it Hectocotyle octopodis.
Squid
Squid
Octopod
Octopod
Abraliopsis morisi hectocotylus English
Abraliopsis morisi hectocotylus English
Octopus
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An octopus is a soft-bodied, eight-limbed mollusc of the order Octopoda. The order consists of some 300 species and is grouped within the class Cephalopoda with squids, cuttlefish, and nautiloids. Lik
Hectocotylus
…Hectocotyli are shaped in many distinctive ways, and vary considerably between species. The shape of the tip of the hectocotylus has been much used in octopus systematics. Many coleoids lack hectocotyli altogether…
Octopus 2
Octopus 2
A giant Pacific octopus at Echizen Matsushima Aquarium, Japan
A giant Pacific octopus at Echizen Matsushima Aquarium, Japan
Diagram of octopus from side, with gills, funnel, eye, ocellus (eyespot), web, arms, suckers, hectocotylus and ligula labelled.
Diagram of octopus from side, with gills, funnel, eye, ocellus (eyespot), web, arms, suckers, hectocotylus and ligula labelled.
A finned Grimpoteuthis species with its atypical octopus body plan
A finned Grimpoteuthis species with its atypical octopus body plan