Echinoderms from Temperate South Eastern Pacific (Peruvian Province): a
Patiria chilensis (Lütken, 1859); b
Stichaster striatus Müller and Troschel, 1840; c
magellanica Leipoldt, 1895; d
Heliaster helianthus (Lamarck, 1816). e
Loxechinus albus (Molina, 1782); f
spatuligera (Valenciennes, 1846); g
dubiosus (Semper, 1868); h
Pattalus mollis Selenka, 1868. (Pictures by Y. Hooker)
Species representative of the rocky intertidal and upper
sublittoral are Stichaster striatus (Fig. 8.3b), Heliaster
helianthus (Fig. 8.3d), Tetrapygus niger and Pattalus
They use their tentacles to capture juvenile mussels, small
crustaceans, and snails detached from their colonies by wave action
It prefers organic remains of decomposing algae and deposited
organic matter as food, especially in the interface between rocks
and sand bottoms (Fig. 8.3f).
Loxechinus albus becomes abundant from Paracas southwards
helianthus and Luidia magellanica are found in deeper waters
Patiria chilensis, a small seastar, occurs along the entire Warm
Temperate South Eastern Province of Peruvian waters
The sea cucumber Pseudocnus dubiosus (Fig. 8.3g) dominates
muddy, hypoxic, unstable bottoms, forming large aggregations.
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