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| Williams, R.B.. |
| The locomotory behaviour and functional morphology of English populations of a small (<2 cm long), burrowing athenarian sea anemone, Nematostella vectensis Stephenson, 1935 (= N. pellucida Crowell, 1946), which lives in soft mud in salt marshes and creeks, are described. Objectives were to ascertain the specific stimuli and environmental conditions determining when and how locomotion is employed, and to assess survival values. Experimentation and anatomical examination revealed how anemones move, and their functional morphology was interpreted in a physiological context. Finally, locomotion, morphology and habitat were compared for several athenarian anemones, to ascertain what correlations there are, if any. Essential environmental conditions for N.... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Behaviour; Burrowing; Climbing; Creeping; England; Functional morphology; Locomotion; Musculature; Nematostella vectensis; Rugae; Sea anemones; 42.79. |
| Ano: 2003 |
URL: http://www.repository.naturalis.nl/record/220581 |
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| Williams, R.B.. |
| In 1949, the late Professor Oskar Carlgren of Lund, Sweden, published a bibliographical survey of the sea anemones of the world, comprising 42 families, 201 genera and 848 species. The survey is an essential starting point for any taxonomic or zoogeographical work on sea anemones. However, the enormous wealth of information that it contains is difficult to extract, because of the lack of adequate indexation. Indexes have therefore been prepared to increase the usefulness of the survey. They are: I, Nomenclatural; II, Authors; III, Geographical. Two appendixes give details of new nominal taxa and nomina nuda published in the survey. No attempt has been made to correct or revise the results of Carlgren's survey: the objective is solely to facilitate the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cnidaria; Anthozoa; Ptychodactiaria; Corallimorpharia; Actiniaria; World survey; Indexes; Nomenclature; Authors; Geographical distribution; Professor Oskar Carlgren; 42.72. |
| Ano: 1997 |
URL: http://www.repository.naturalis.nl/record/318708 |
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| Williams, R.B.. |
| Cervera atlantica, a small stoloniferan octocoral, was described as Cornularia atlantica by James Yate Johnson in 1861 from Funchal, Madeira. It then remained unrecognized until 1972 when I discovered it on the Mediterranean coast of Spain. I have since confirmed its existence at the type locality and have traced its distribution around Madeira, throughout the Canary Islands, and on Portuguese and English coasts. In the Mediterranean Sea, I have found it along Spanish and French coasts, among the Balearic Islands and on the coast of Cyprus. Cervera atlantica is cryptic and photophobic, living under stones in shallow water (usually at 0-2 m) or in crevices and caves in massive intertidal rocks, protected from direct sunlight. Intolerant of rough water, it... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Octocorallia; Cervera atlantica; Cornularia cornucopiae; Identification; Ecology; Zoogeography. |
| Ano: 1996 |
URL: http://www.repository.naturalis.nl/record/505386 |
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