Small wrench- or claw-shaped appendage found on echinoderms
Pedicellaria of Acanthaster planciGeneralized pedicellaria of an (a) asteroid and (b) echinoid
A pedicellaria (pl.: pedicellariae) is a small wrench- or claw-shaped appendage with movable jaws, called valves, commonly found on echinoderms (phylum Echinodermata), particularly in sea stars (class Asteroidea) and sea urchins (class Echinoidea). Each pedicellaria is an effector organ with its own set of muscles, neuropils, and sensory receptors and is therefore capable of reflex responses to the environment.
Pedicellariae are poorly understood but in some taxa, they are thought to keep the body surface clear of algae, encrusting organisms, and other debris in conjunction with the ciliated epidermis present in all echinoderms.
A pedicellaria (pl.: pedicellariae) is a small wrench- or claw-shaped appendage with movable jaws, called valves, commonly found on echinoderms (phylum...
spine in one position. Located among the spines are several types of pedicellaria, moveable stalked structures with jaws. Sea urchins move by walking,...
also called straight, pedicellaria, which lie scattered across their skin, and the smaller minor, also called crossed, pedicellaria, which are found in...
common combinations found in the Caribbean. In between the spines are pedicellaria, pincer like structures. These are white which distinguishes the green...
continued for about six hours. Tsutomu Fujiwara (1935). "On the poisonous pedicellaria of Toxopneustes pileolus (Lamarck)". Annotationes Zoologicae Japonenses...
species. However, they can be distinguished by closely examining the pedicellaria in the central disc. Labidiaster radiosus is found on rocky reefs in...
held in place by the tube feet and by the claw-like structures known as pedicellaria. It grazes on algae, especially encrusting coralline algae, seagrass...
tipped with suckers. The oral surface of the arms is clad with clawed pedicellaria, and a rim of large, thick spines grows on the margin between the aboral...
or parasitic (the clingfish gains protection, and eats tube feet and pedicellaria from its sea urchin host). No clingfish species is known to be exclusively...
larger spines dorsally and marginally, and larger and more numerous pedicellaria. He states it is to a lesser degree similar to A. versicolor, differing...
towards the tips of the arms. There are small yellowish-green retractable pedicellaria between the warts. The oral (under) surface of the starfish is white...
dense blunt spines over the upper (aboral) surface of its disc short pedicellaria on its aboral surface purple-brown aboral surface becoming more intense...
pedicellaria; Hayashi pointing to the somewhat more robust skeleton, the single spine per dorsal plate, and the smaller and more slender pedicellaria...
Echinoids take their place, where really blossomed at that time. That's why Pedicellaria are observed very often. Inderminate specimens are known. The macroflora...
Echinoids take their place, where really blossomed at that time, while Pedicellaria are observed very often. On the bituminous marls there is a great abundance...
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