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Title: Distribution and Ecology of Shallow-Water Crinoids at Enewetak Atoll, Marshall Islands, with an Annotated Checklist of Their Symbionts
Authors: Zmarzly, D.L.
Issue Date: Apr-1984
Publisher: University of Hawai'i Press
Citation: Zmarzly DL. 1984. Distribution and ecology of shallow-water crinoids at Enewetak Atoll, Marshall Islands, with an annotated checklist of their symbionts. Pac Sci 38(2): 105-122.
Abstract: Six species of comatulid crinoids were found to inhabit coral reefs
between depths of 3 and 36m at Enewetak Atoll , Marshall Islands. These
species were Eudiocrinus tenuissimus, Dorometra nana, Comaster gracilis,
Comanthus bennetti, Comanthus parvicirrus, and Comanthina schlegeli. The first
four species were previously recorded from other atolls in the Marshall Islands,
but Comanthus bennetti was the only species reported from Enewetak.
Comanthus parvicirrus and Comanthina schlegeli have not been previously
recorded for the area . Nine shallow-water species are now known from the
Marshall Islands, compared to 2I species from the Palau Archipelago and 7from
Guam. At Enewetak, abundance and diversity of crinoids were greatest at sites
with exposure to regular current flow, and depth zonation of species was ap- .
parent. Three of the species at Enewetak were polychromatic; color varieties
found at Enewetak are compared to those documented for conspecifics at other
Indo-Pacific locations. Spatial distribution patterns and relative abundances of
the noncryptic crinoids at three sites remained nearly constant over a half-year
period. No mortality or recruitment was observed in the monitored populations.
Eighteen species of macro-invertebrates were found in association with the
crinoids: 3 species of gastropod mollusks, 3 species of myzostomid worms, 1
species of scaleworm, 1 species of copepod, and 10 species of decapod
ISSN: 0030-8870
Appears in Collections:Pacific Science Volume 38, Number 2, 1984

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