pluteus


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pluteus

a larva of ECHINODERMS that has ciliated arms, sometimes supported by calcareous rods.
References in periodicals archive ?
A 100-fold or greater increase in phytoplankton density should enhance pluteus development rate, but it could also constitute a stress for larvae.
One of the buds (clones) was released 24 h later as an early gastrula that developed into a small pluteus; another bud was observed to disintegrate, expelling cells in what appeared to be a failed attempt at cloning (Fig.
Followed by gastrulation, blastula will be changed into pluteus larval stage where it exhibits the sea urchin characteristics.
Marked weakness, disorientation, anxiety, mydriasis, tachycardia and hyper-reflexia reportedly developed in mice 30 min to 4 h after ingestion of hallucinogenic or magic mushrooms like Psilocybe, Panaeolus, Copelandia, Gymnopilus, Pluteus, and Conocybe [4].
However, in the sea urchin Dendraster excentricus the rate of asexual reproduction in pluteus larvae increases when the external mucus from fish (predator cues) is introduced into the cultivation medium [117-119].
similis 6 (9) 2 (6) 6 (14) 23 17 (17) (41) Oncaea borealis 3 (15 2 (0) 28 (6) 11 23 4 (28) (1)) (20) (17) Harpacticoids 0 (1) Unidentified 4 (4) 3 (0) 3 (0) 3 (1) 0 (3) 82 copepods (154) Copepod nauplii 7S (78) 192 553 329 273 138 (285) (457) (373) (391) (309) Zoea larvae Ostracods 1 (0) Decapod 0 (1) Euphausiid 1 (0) Veliger larvae 1 (2) 3 (4) 0 (4) Sagitta elegans 3 (2) 0 (1) 1 (0) 4 (4) 1 (0) Pluteus larvae 0 (2) Blastula larvae Echinoderm juvenile 0 (1) Larvacea 0 (4) 3 (5) 1 (0) 3 (1) 15 (6) 3 (1) Oikopleura 1 (0) Fish larvae Zooplankton Mar 7 Mar 18 May 25 Silicoflagcllates 0 (1) Foraminifera Medusa 0 (2) 0 (2) Polychaetc larvae 3 (5) Calanus finmarchicus 2 (3) 1 (4) Pseudocalanus spp.
Also imaged were a variety of invertebrate plankters, ranging from copepods and larvaceans to ctenophores and medusae to invertebrate larval types, such as echinoderm pluteus. Because most imagery was dominated by the smaller plankton (diatoms, copepods, and larvaceans; see Fig.
Bergamo, Biblioteca Civica "Angelo Mai," MAB 21; Florence, Biblioteca Medicea Laurenziana, Ashburnham 1119; Florence, Biblioteca Medicea Laurenziana, Pluteus 29.48; Pisa, Biblioteca Universitaria, 606; Rome, Biblioteca Vallicelliana, B.83; Venice, Biblioteca del Museo Correr, Correr 336, part 4.
Roesner [1993]); the organa dupla from Florence, Biblioteca Medicea-Laurenziana MS Pluteus 29.1 (F; vols.