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Post-metamorphic recruitment andmorphology of two sympatric brittlestars
| Title: | Post-metamorphic recruitment andmorphology of two sympatric brittlestars. |
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| Name(s): |
Turner, Richard L. Miller, John E. Harbor Branch Oceanographic Institute |
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| Type of Resource: | text | |
| Genre: | Article | |
| Date Issued: | 1988 | |
| Publisher: | A. A. Balkema. | |
| Place of Publication: | Brookfield, VT | |
| Physical Form: | ||
| Extent: | 12 p. | |
| Language(s): | English | |
| Identifier: | FA00007373 (IID) | |
| Note(s): |
Discovery of simultaneously recruiting populations of Microphiopholis atra and
Hemipholis elongata in the Gulf of Mexico has allowed a morphological comparison of their
post-settlement juveniles by light microscopy and SEM. Based on comparison of size distributions,
H.elongata probably settled over a longer period than M.atra. The smallest specimens
of M.atra (vs. H.elongata) were distinguished by lack (presence) of an oral gape,
presence of hooked dorsal (ventral) arm spines, dorsal (ventral) coil of the arms, absence
(presence) of tentacle scales, and a flattened (convex) disc. Infradental papillae were
visible by SEM in M.atra of disc diameter (d.d.) 0.44 mm. At d.d. 0.63 mm, the two species
were distinguishable by the plating of the ventral interradius. Other characters used to
separate the species appeared in larger specimens. This and other recent studies of juvenile
ophiuroid morphology should encourage benthic ecologists to attempt species identifications
of these critical life-history stages. Florida Atlantic University. Harbor Branch Oceanographic Institute contribution 599 This manuscript is an author version with the final publication available and may be cited as: Turner, R. L. & Miller, J. E. (1988). Post-metamorphic recruitment and morphology of two sympatric brittlestars. In R. D. Burke, P. V. Mladenov, P. Lambert, & R. L. Parsley (Eds.), Proceedings of the Sixth International Echinoderm Conference, Victoria, 23-28 August 1987 (pp. 493-502). Rotterdam; Brookfield, VT: A. A. Balkema. |
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| Subject(s): |
Ophiuroidea Brittle-stars Morphology Echinodermata |
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| Persistent Link to This Record: | http://purl.flvc.org/fau/fd/FA00007373 | |
| Host Institution: | FAU |
