Pluteus

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pluteus

[′plüd·ē·əs]
(invertebrate zoology)
The free-swimming, bilaterally symmetrical, easel-shaped larva of ophiuroids and echinoids.

Pluteus

 

the larva of a sea urchin or ophiuran. A pluteus has paired appendages, or arms, inside which are calcareous skeletal needles. The larva swims by means of its arms, which are fringed with ciliated epithelium. Only part of its body is metamorphosed into the adult; the rest of the body and the arms atrophy.

pluteus

1. A low barrier placed between columns.
2. A screen of pierced marble which surrounds the choir or sanctuary of a church.
References in periodicals archive ?
Table 3 shows the number and relative percentages of sacrificed urchins in which visually assessed high gamete quality was observed, and the results of the fertilization tests (as percentages of normal developed plutei larvae obtained 72 h after fertilization).
In contrast, the percentage of normal plutei larvae was significantly lower (P < 0.
01 HGQ, high gamete quality; specimens with a positive gamete visual evaluation; PL, percent of normal developed plutei larvae (72 h after fertilization); Tot, total analyzed specimens.