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You are here:   animal list > Linckia laevigata

 

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Linckia laevigata (Linnaeus, 1758)

The Blue Sea Star


Wing Yan Yuen (2011)

Fact Sheet

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Overview

Brief Summary


Comprehensive Description


Distribution


Physical Description

Size


Identification Resources


Ecology

Local Distribution and Habitats


Associations


Life History & Behaviour

Behaviour


Cyclicity


Evolution & Systematics

Fossil History


Systematics or Phylogenetics


Morphology and Physiology

External Morphology


Internal Anatomy


Molecular Biology & Genetics

Nucleotide Sequences


Molecular Biology


Conservation

Status and Threats


Wikipedia


References & More Information

Bibliographies


Biodiversity Heritage Library


Names & Taxonomy

Synonyms


Common Names


Page Statistics

Content Summary

External Morphology

Symmetry and shape
Adults of the blue sea star typically have five armsand are pentamerous radial symmetrical. The larvae, on the other hand, are bilaterally symmetrical (Ruppert, Fox & Barnes 2004). The arms of Linckia laevigata are rounded and are barely tapering. Arms are not distinct from the central disc and at the end of each arm, sensory tube feet (tentacle-like) and a eyespot can be found.

Aboral Side
The aboral side is generally facing upward. Anus is not easily recognizable, yet an asymmetrical spot named madreporite is always distinct on the aborsal surface.


Oral Surface

The mouth is located in the center of the oral surface. A wide furrow, named the ambulacrum (or ambulacral groove), is found under each arm. Short, yellowish tubular projections called tube feet are found within the ambulacral groove. Below is a video of L. laevigata tube feet protruding from the ambulacrum groove underneath the arm.

Images

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(2 objects, created 5/6/2011)

Album: This is a private album that is not visible to anonymous users Great Barrier Reef Invertebrates

Summary:

Date:

Album: 2012

Album: 2011

Classification

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Kingdom
Animalia
Phylum
Echinodermata
Class
Asteroidea
Order
Valvatida
Family
Ophidiasteridae
Genus
Linckia

Synonyms

Asterias laevigata ((Linnaeus, 1758))
Linckia browni (Gray, 1840)
Linckia crassae (Gray, 1840)
Linckia hondurae (Domantay & Roxas, 1938)
Linckia miliaris ((Muller & Troschel, 1840))
Linckia rosenbergi (von Martens, 1866)
Linckia suturalis (von Martens, 1866)
Linckia typus (Nardo, 1834)
Ophidiaster clathratus (Grube, 1865)
Ophidiaster crassa ((Gray, 1840))
Ophidiaster laevigatus (Müller & Troschel, 1842)
Ophidiaster miliaris (Müller & Troschel, 1842)
Ophidiaster propinquus (Livingstone, 1932)

Common Names

azure sea star