Psychropotes longicauda
Psychropotes longicauda | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Echinodermata |
Class: | Holothuroidea |
Order: | Elasipodida |
Family: | Psychropotidae |
Genus: | Psychropotes |
Species: | P. longicauda
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Binomial name | |
Psychropotes longicauda | |
Synonyms[1] | |
List
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Psychropotes longicauda is a
The animal is sometimes called the "gummy squirrel"[3] because it looks like a squirrel-shaped gummy bear.[4]
Description
As an adult, Psychropotes longicauda has eighteen short feeding tentacles, each with a leathery terminal disc with retractile processes projecting around the margin. Its body is very flexible and can grow to a length of between 14 and 32 cm (5.5 and 12.6 in). It is approximately cylindrical but broadest and somewhat flattened near the anterior end. At the posterior end there is a dorsal, tail-like appendage up to 12 cm (4.7 in) long, either pointed or with a pair of unequal-length tips. There is a double row of small tube feet along the ventral surface and a single row of larger tube feet on each side of the body. The skin is soft and pliable and the colour is violet in preserved specimens.[5]
The larva has ten tentacles and is transparent with a reddish hue at the anterior end. It has an unpaired gelatinous dorsal appendage. Larvae can grow to at least 23 mm (0.91 in) in length excluding the appendage which may be nearly as long as the body.[6]
Distribution and habitat
Psychropotes longicauda is a
Behaviour
Adult Psychropotes longicauda are found on soft sediments through which they sift with the aid of their feeding tentacles. The eggs, with a diameter of 4.4 mm (0.17 in), are the largest of any echinoderm. The size of the eggs, and the fact that the larvae do not appear to feed, makes it so that the yolk nourishes them for an extended time and that they can therefore disperse widely.[6]
References
- ^ a b Paulay, Gustav (2013). "Psychropotes longicauda Théel, 1882". WoRMS. World Register of Marine Species. Retrieved 2014-01-10.
- ISBN 978-1-4262-0643-6
- ^ For example Olive Heffernan (Feb 9, 2019). "Deep-sea mining could wreck the last unexplored ecosystem on Earth". New Scientist.
- ^ Nancy Ryerson (Oct 4, 2018). "The Gummy Squirrel Is the Squirrel of the Sea You Never Heard About". Azula — For the love of oceans. Archived from the original on February 8, 2019.
- ISBN 9780875901114.
- ^ ISBN 9789061915966.