Results 171 to 180 of about 1,682 (210)
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On the stereom microstructure of ophiuroid teeth
Ophelia, 1996Abstract The tooth stereom microstructure of 43 species of ophiuroids, from 9 families, was examined using light and scanning electron microscopy. Two basic types of teeth, uniform and compound, are present in ophiuroids. From a mechanical standpoint, compound teeth may provide a tougher grinding surface for ingestion of prey.
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Evolutionary paleoecology of dense ophiuroid populations
The Paleontological Society Papers, 1997Issues of scale are becoming increasingly important to paleobiological interpretations of the fossil record. Nevertheless, a number of biological processes display scale-independent behaviors. The effects of predation on the distribution of dense populations of epifaunal, suspension-feeding ophiuroids are scale-independent, at scales ranging from the ...
Richard B. Aronson, Daniel B. Blake
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Predation on fossil and Recent ophiuroids
Paleobiology, 1987The frequency of sublethal damage was examined in two ophiuroid species, Palaeocoma milleri and ? Ophioderma tenuibrachiata (Ophiodermatidae), from a shallow-water Jurassic “starfish bed.” None of 60 specimens was regenerating arms, a result that agrees
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Allelopathic potential of centipedegrass (Eremochloa ophiuroides)
Weed Science, 2006Abstract Laboratory and greenhouse experiments were conducted to determine the allelopathic potential of centipedegrass. Germination and growth of indicator species were evaluated in soil leachates, leaf debris, and aqueous leaf extracts of centipedegrass.
Travis W. Gannon +2 more
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Interactions between ophiuroids and beaugregory damselfish
Journal of the Marine Biological Association of the United Kingdom, 2003The interactions between beaugregory damselfish and ophiuroids, potential damselfish egg predators, were investigated using several field studies. A survey of back reef areas showed that the two most common ophiuroid species, Ophiocoma echinata and Ophioderma appressum, were significantly associated with the territories of beaugregory males within the ...
Adam G. Payne +2 more
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[Locomotion of Barents Sea ophiuroids].
Zhurnal evoliutsionnoi biokhimii i fiziologii, 1980Locomotion of 5 species of Ophiuroids from the Barents Sea has been described--Ophiura albida, O. robusta, O. sarsi, Ophiacantha bidentata, Ophiopholis aculeata. Representatives from the genus Ophiura move by means of one or two symmertic pairs of arms which perform rhythmic rowing beats. The feet tube do not participate in their locomotion. Locomotion
Iu I, Arshavskiĭ +3 more
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Culture in vitro of the excised embryo of an ophiuroid
Nature, 1940EXCISED embryos of the viviparous ophiuroid Amphipholis squamata have been successfully cultured in vitro by the method described below. It has been developed in the course of a study of the embryology of the species, and involves a modification of the watch-glass technique of Strangeways as described by Honor B. Fell and Robison1.
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Regeneration of the ophiuroid Amphiura filiformis
2001Regeneration of body parts lost following trauma, predation, or as a result of asexual reproduction has received much attention in recent years. Indeed, there are several reports in current volume, which deal with this problem. In terms of the cell biology of regeneration, most effort has been directed at a rather limited number of species and groups ...
THORNDYKE M. C +3 more
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Rediscovery of the Ophiuroid Genus Ctenamphiura Verril
Nature, 1952ON September 10, 1874, H.M.S. Challenger, while dredging at Station 188, at the western end of Torres Strait, obtained from 28 fathoms two specimens of an amphiurid which afterwards became the genotype of the monotypic genus Ctenamphiura, receiving the name Ctenamphiura maxima (Lyman, 1879).
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