User:Basilosauridae/sandbox/Bat star
| Bat star | |
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| Pink bat star in the intertidal | |
| Scientific classification | |
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| Species: | P. miniata
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| Binomial name | |
| Patiria miniata Brandt, 1835
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The bat star (Patiria miniata), also known as a sea bat, webbed star, and broad-disk star, is a species of sea star in the family Asterinidae. The bat star gets its name from the webbing between its arms, which resembles a bat's wings.[1]
Description[edit]
It typically has five arms, but can have as many as nine.[2] The central disk is wider than the arms are long.[3]Bat stars occur in many of colors, including green, purple, red, orange, yellow and brown and can be either mottled or solid.[2]
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It lacks the pincers or pedicellariae that most sea stars use to clean the skin surface of debris, but its small, moving hairs or cilia may create enough of a water current to keep the surface of its skin clean.[4]
t has visual sensors at the end of each ray that can detect light and note prey. To eat its prey, it covers the prey with its stomach and oozes digestive juices over it; this liquefies the food, enabling the bat star to ingest it.[2] It is omnivorous, eating both plants and animals alive or dead.[5]
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Distribution and habitat[edit]
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The bat star is usually found in the intertidal zone to a depth of 79 metres (259 ft).[4] Its range extends from Sitka, Alaska to Baja California in the Pacific Ocean.[2] It is most abundant along the coast of Central California and the Monterey Bay.[3]
Ecology[edit]
Diet[edit]
Bat stars are play a role in their ecosystem as detritivores and scavengers, collecting algae and dead animals from the ocean floor and helping keep the ocean healthy.[2]
Reproduction[edit]
The bat stars reproduce through spawning. The male casts sperm and the female drops eggs; each has pores at the base of the rays for this purpose. The sperm and egg unite at sea and are carried away by ocean currents.[2]
Defense[edit]
Bat stars may gently "fight" with each other if they meet. Fighting behavior consists of pushing and laying an arm over the other.[3][2]
References[edit]
- ^ "Bat Star: Asterina miniata". northislandexplorer.com. Archived from the original on 21 November 2009. Retrieved 22 November 2009.
- ^ a b c d e f g "Bat star, Kelp Forest, Invertebrates, Asterina miniata". www.montereybayaquarium.org. Archived from the original on 18 July 2011. Retrieved 22 November 2009.
- ^ a b c "Asterina miniata". www.wallawalla.edu. Retrieved 22 November 2009.
- ^ a b "Asterina miniata (Broad-Disk Star)". zipcodezoo.com. Archived from the original on 14 June 2012. Retrieved 22 November 2009.
- ^ "sea stars". biology.fullerton.edu. Archived from the original on 23 November 2009. Retrieved 26 November 2009.