ECHINODERMATA, Holothuria atra, IN AN INTERTIDAL SEAGRASS BED OFF THE . Jurnal Ilmu dan Teknologi Kelautan Tropis merupakan. (Echinodermata: Ophiuroidea) from the western Atlantic Ocean included Astrophiura permira Sladen in a list of echinoderms from the. Members of Ophiuroidea can adapt to different habitats, trophic levels, and biological interactions, with a high degree of heterogeneity in their reproductive.

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Holistic morphometrics is a term jurnla complete shape characterization of all of the structural parts of an organism. The skeleton of an echinoid is comprised of hundreds of individual plates arranged in a closed 3-dimensional mosaic forming the test.

GIS software and techniques were used to generate topologically correct digital models of an ontogenetic series of specimens of the sand dollar echinoid Echinarachnius parma.

Plate growth can be considered in proportion to overall skeleton growth, resulting in a linear model of relative growth.

Global diversity of brittle stars (Echinodermata: Ophiuroidea).

Alternatively, separate logistic equations can be fit to the ontogenetic series of homologous plate areas using nonlinear least squares regression to result in a model for instantaneous growth. The linear and logistic parameters of the models describe the allometric growth of plates from different viewpoints.


Growth is shown to fall into characteristic patterns defining distinct plate growth domains associated with development of the imago larval skeleton just prior to metamorphosis, early growth associated with expansion of the corona and fold-over forming the flattened body formjuvenile growth and formation of petals, and adult growth. Functions of growth, plate translocation, plate juxtaposition between aboral and oral surfaces, and relationships with internal buttressing are quantified.

Results offer explanations for general skeletal symmetry, distinction between ambulacral and interambulacral growth, the relationship of growth to internal buttressing, existence of a distinct petalodium, and anterior-posterior asymmetry during development.

The parametric values of growth functions derived from the results are a basis for computational modeling of growth and development in sand dollars. Evolution49, — Human Biology10, — Bios54, — Canadian Journal of Zoology74, — Comparative Biochemistry and Physiology20, — University of California Publications in Geological Sciences31, 73— Developments in Aquaculture and Fisheries Science.

Acta Biotheoretica5, 51— Historical Biology26, — Marine Biology, — Invertebrate Biology, — Gulf of Mexico Science17, 35— Invertebrate Biology, echhinodermata Biological Bulletin, — Kongliga Svenska Vetenskaps-Akademiens Handlingar11, 1— Journal of Theoretical Biology, — Palaios14, — Addison Wesley Educational Publishers, Inc.


Journal of Experimental Botany, 10, — Fishery Bulletin, — Biological Journal of the Linnean Society88, — Radial asymmetry as a bioindicator of stress. Ecological Indicators54, 39— Paleobiology5, — CRC press, Boca Raton, pp. A geometric schinodermata description of shape and comparison of fossil and living species [abstract]. The Paleontological Society Exhinodermata Publications13, 49— Fishery Bulletin88, — Journal of Evolutionary Biology19, — MorphoBankProject Subscription Login to verify subscription.

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Email the author Login required. Holistic morphometric analysis of growth of the sand dollar Echinarachnius parma Echinodermata: Abstract Holistic morphometrics is a term implying complete shape characterization of all of the structural parts of an organism.