Search results
Results from the WOW.Com Content Network
Squid can expel up to 94% of the fluid within their cavity in a single jet thrust. [68] To accommodate the rapid changes in water intake and expulsion, the orifices are highly flexible and can change their size by a factor of twenty; the funnel radius, conversely, changes only by a factor of around 1.5.
The funnel–mantle locking apparatus is a structure found in many cephalopods that connects the mantle and hyponome (funnel) and restricts their movement relative to each other. [1] It consists of two interlocking components: one located on the mantle (often fibrous) and the other on the funnel (often cartilaginous ). [ 1 ]
Asperoteuthis acanthoderma, the thorny whiplash squid, is a large species of squid belonging to the family Chiroteuthidae. It is characterised by the tiny, pointed tubercules present on its skin and a Y-shaped groove in the funnel locking apparatus .
Water enters the mantle cavity around the sides of the funnel, and subsequent contraction of the hyponome expands and then contracts, expelling a jet of water. In most cephalopods, such as octopus, squid, and cuttlefish, the hyponome is a muscular tube.
To escape a predator, the funnel is directed forwards and the squid shoots backwards at great speed. It can also emit a cloud of ink to distract the predator. [7] Eggs are deposited in a gelatinous capsule attached to the sea bed. [2] The large-yolked eggs hatch into fully formed miniature versions of the parent squid. [7]
The funnel does not have valves, but contains a dorsal pad with three papillae as organs. [ citation needed ] Paddle-shaped fins are attached to a part of the gladius . H. pfefferi has a single ocular photophore and does not have photophores at its arm tips.
A, is a chiroteuthid squid known only from the waters off the Hawaiian Islands. It differs from the closely related Asperoteuthis acanthoderma in lacking integumental tubercles and elongate fins. This species also possesses a characteristic curved groove in its funnel locking apparatus. [3]
Mastigoteuthis flammea (Flaming whiplash squid [2]) is a species of whip-lash squid. Ventral views of funnel locking apparatuses (left: 27 mm ML, right: 35 mm ML) Dorsal view of nuchal cartilage