description Eucidaris tribuloides tribuloides Overview
Eucidaris tribuloides tribuloides is a subspecies of the slate-pencil urchin, an echinoderm found in the tropical western Atlantic, including Caribbean waters. It has a rounded test and thick, blunt primary spines that are supported by enlarged tubercles and provide protection from predators and physical contact. The taxon is of interest to marine biologists studying cidaroid sea urchins and Caribbean reef communities.
help Eucidaris tribuloides tribuloides FAQ
What animal is Eucidaris tribuloides tribuloides?
It is a taxonomic name associated with the slate-pencil urchin, a cidaroid sea urchin. The animal has a rounded test and a small number of thick, blunt primary spines.
Where is Eucidaris tribuloides found?
The slate-pencil urchin occurs in the tropical western Atlantic, including the Caribbean and parts of the Gulf of Mexico. It lives on rocky bottoms, coral reefs, and other littoral habitats.
Why is it called a slate-pencil urchin?
The common name refers to its large, blunt primary spines, which resemble old slate pencils more than fine needles. Unlike many long-spined urchins, Eucidaris tribuloides has a stout, club-like appearance.
What does Eucidaris tribuloides eat?
It is a nocturnal benthic grazer that feeds on materials including algae, coral, and sponges. During daylight it often uses its large primary spines to anchor itself under rocks or in crevices.
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