Read e-book online Coelenterate Ecology and Behavior PDF

By G. O. Mackie (auth.), G. O. Mackie (eds.)

ISBN-10: 1475797249

ISBN-13: 9781475797244

ISBN-10: 1475797265

ISBN-13: 9781475797268

The examine of coelenterates is now essentially the most energetic fields of invertebrate zoology. there are various purposes for this, and never every body may agree on them, yet yes proof stand out particularly basically. certainly one of them is that the various those who examine coelenterates achieve this just because they're drawn to the animals for his or her personal sake. This, besides the fact that, will be precise for different invertebrate teams and can't on its own clarify the present growth in coelenterate paintings. the most purposes for all this job appear to lie within the huge focus of study attempt and investment into 3 wide, normal parts of biology: marine ecology, cellular-developmental biology and neurobiology, in all of which coelenterates have a key function to play. they're the dominant organisms, or are occupied with a tremendous method, in numerous marine habitats, of which coral reefs are just one, and this instantly guarantees their claims at the consciousness of ecologists and marine scientists. Secondly, the benefit of hydra and a few different hydroids as experimental animals has lengthy made them a usual selection for various reviews on progress, food, symbiosis, morphogenesis and varied facets of phone biology. eventually, the phylogenetic place of the coelenterates because the lowest metazoans having a anxious process makes them uniquely fascinating to these neurobiologists and behaviorists who desire to achieve insights into the functioning of upper worried platforms via operating up from the bottom level.

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Biggs, J. D. Currey, and J. M. Gosline. 1976. Mechanical Design in Organisms. John Wiley & Sons, New York, 423 pp. G. INTRODUCTION The orientation of fan shaped sessile organisms perpendicular to the current is well known and has often been discussed, REES 1972, RIEDL 1966, THEODORE and DENIZOT 1965, VELIMIROV 1973. The possible trophic benefit of this orientation in fan shaped coelenterates was pointed out by RIEDL 1966 and RIEDL and FORSTNER 1968. WAINWRIGHT and DILLON 1969 described the increased mechanical stability of Gorgonia against twisting moments.

Some polyps and colonies have flexible joints whose design is the simplest of possible joints. , 1974. Flume studies on the stability of model corals as an aid to quantitative palaeoecology. Pa1aeogeogr. Pa1eoc1imato1. , 15:1-27. E. Davies, 1968. Gorgonians and water motion studies in Gulf of California. Underwater Naturalist, Bull. Am. , Winter: 24-28, 42. , 1968. Seattle. 346 pp. Animal Mechanics. Univ. , and R. R. Graus, 1975a. Water flow and hydromechanical adaptations of branched reef corals.

Xanthogrammica feed primarily on mussels which fallon the anemone's oral disks after being ripped off the substratum by starfish, logs, and waves (Dayton, 1973). I found greater current velocities higher in the intertidal. Mussels occur higher in the intertidal than do~. xanthogrammica, thus flow velocities are 3 to 5 times higher where the mussels are ripped off the rock than they are where the anemones must catch and hold on to them. A few solitary ~. xanthogrammica occur at sites exposed to lower flow velocities (maximum mainstream velocities typically 1 m·s- l ) than those in surge channels.

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Coelenterate Ecology and Behavior by G. O. Mackie (auth.), G. O. Mackie (eds.)

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