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Skeletal modifications related to food capture and feeding behavior of the basketstar Astrophyton

Published online by Cambridge University Press:  08 April 2016

Donald B. Macurda Jr.
Donald B. Macurda Jr.*
Affiliation:
Museum of Paleontology, The University of Michigan, Ann Arbor, Michigan 48104
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Abstract

The modern gorgonocephalid ophiuroid Astrophyton, a basketstar, has feeding habits which may be analogous to those of some Paleozoic crinoids that lack pinnulate arms (Meyer and Lane 1975). Field study has demonstrated the very quick response of Astrophyton when plankton impinge upon its arms. Study of the skeletal microstructure by scanning electron microscopy has shown that the quick response is facilitated by the development of relatively large ventral muscle fossae and articular surfaces whose shape follows a catenary curve. Prey are impaled by spines which articulate with the ventral surface of vertebral ossicles. Stereomic microstructure of vertebral ossicles is galleried where ligaments are present and labyrinthic where muscular tissue is present. The same microstructures are found in muscular articulations of modern crinoids. Future work on the arm structure of Paleozoic taxocrinids and cyathocrinids may demonstrate structural analogies and suggest similarities in food capture between such crinoids and modern baskets tars.

Type
Research Article
Information
Paleobiology , Volume 2 , Issue 1 , Winter 1976 , pp. 1 - 7
Copyright
Copyright © The Paleontological Society 

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References

Literature Cited

Breimer, Albert. 1969. A contribution to the paleoecology of Palaeozoic stalked crinoids. Kon. Ned. Akad. Wetensch., Proc., B.72:139–150.Google Scholar
Breimer, Albert and Webster, G. D. 1975. A further contribution to the paleoecology of fossil stalked crinoids. Kon. Ned. Akad. Wetensch., Proc., B.78:149–167.Google Scholar
Davis, W. P. 1966. Observations on the biology of the ophiuroid Astrophyton muricatum. Bull. Mar. Sci. 16:435–444.Google Scholar
Fricke, H. W. 1966. Der Nahrungserwerb des Gorgonenhauptes Astroboa nuda (Lyman). Nat. Mus., Frankf. 96:501–510.Google Scholar
Hyman, L. H. 1955. The Invertebrates, 4: Echinodermata. 763 pp. McGraw-Hill Book Co.; New York, N.Y.Google Scholar
Lane, N. G. and Breimer, Albert. 1974. Arm types and feeding habits of Paleozoic crinoids. Kon. Ned. Akad. Wetensch., Proc., B.77:32–39.Google Scholar
Lane, N. G. and Macurda, D. B. Jr. 1975. New evidence for muscular articulations in Paleozoic crinoids. Paleobiology. 1:59–62.Google Scholar
Macurda, D. B. Jr. and Meyer, D. L. 1974. Feeding posture of modern stalked crinoids. Nature. 247:394–396.Google Scholar
Macurda, D. B. Jr. and Meyer, D. L. 1975. The microstructure of the crinoid endoskeleton. Univ. Kans. Paleontol. Contrib. Pap. 74:1–22.Google Scholar
Magnus, D. B. E. 1967. Ecological and ethological studies and experiments of the echinoderms of the Red Sea. Stud. Trop. Oceanogr. Miami. 5:635–664.Google Scholar
Meyer, D. L. 1973. Feeding behavior and ecology of shallow-water unstalked crinoids (Echinodermata) in the Caribbean Sea. Mar. Biol. 22:105–129.Google Scholar
Meyer, D. L. and Lane, N. G. 1975. The feeding biology of some Paleozoic crinoids and Recent basketstars. J. Paleontol. In press.Google Scholar
Tsurnamal, M. and Marder, J. 1966. Observations on the basketstar Astroboa nuda (Lyman) on coral reefs at Elat (Gulf of Aqaba). Isr. J. Zool. 15:9–17.Google Scholar
Van Sant, J. F. and Lane, N. G. 1964. Crawfordsville (Indiana) crinoid studies. Univ. Kans. Paleontol. Contrib. Echinodermata, Art. 7, Ser. no. 35:1–136.Google Scholar