Occurrence in the Field of a Long-Term, Year-Round, Stable Population of Placozoans

@article{Maruyama2004OccurrenceIT,
  title={Occurrence in the Field of a Long-Term, Year-Round, Stable Population of Placozoans},
  author={Yoshihiko K. Maruyama},
  journal={The Biological Bulletin},
  year={2004},
  volume={206},
  pages={55 - 60}
}
  • Y. Maruyama
  • Published 1 February 2004
  • Environmental Science, Geography
  • The Biological Bulletin
Long-term field studies on placozoans (Trichoplax adhaerens), including both substrate sampling and slide sampling, were carried out at a subtidal site near Shirahama, Japan. Samples of natural substrate materials from the field, such as stones, shells, or fragments of coral, were particularly useful for obtaining placozoans. Results from the substrate sampling indicate that placozoans are present year-round at the study site. Large intermittent peaks in the number of animals collected at the… 
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References

SHOWING 1-10 OF 24 REFERENCES
Growth and Behavior of Trichoplax adhaerens: First Record of the Phylum Placozoa in Hawaii
TLDR
The first record of Trichoplax adhaerens F. Schulze (phylum Placozoa) in Hawaii is reported and some observations on their behavior and growth rates in mixed laboratory culture are described.
Alternative modes of asexual reproduction inTrichoplax adhaerens (Placozoa)
TLDR
Hollow swarmers are budded off at the dorsal surface of Trichoplax and are covered by dorsal epithelium and there is no indication that the fiber cells included between the epithelia take any part either in morphologenesis or the separation of the bud from the mother animal.
Das radialpolare Differenzierungsmuster bei Trichoplax adhaerens F. E. Schulze (Placozoa) / The Radial Polar Pattern of Differentiation in Trichoplax adhaerens F. E. Schulze (Placozoa)
TLDR
Fission is involved in the regulation of the quantitative relation between these two kinds of cells and a monstrous modification of the shape and physiologic properties demonstrates a disturbance of these regulations.
Trichoplax adhaerens (Phylum Placozoa) has Cells that React with Antibodies Against the Neuropeptide RFamide
TLDR
The results of this investigation demonstrate the existence of a specific set of cells which react with antibodies against the neuropeptide family RFamide.
Five Kingdoms: An Illustrated Guide to the Phyla of Life on Earth
  • D. Roberts
  • Environmental Science
    Biodiversity & Conservation
  • 2004
TLDR
The foundations and goals of conservation biology (and its historical development) awaits elucidation by critical philosophers, and a mature and rigorous refinement will underpin objective knowledge and conservation of organismal biodiversity whilst maintaining biospheric integrity.
Atlas of invertebrate reproduction and development
Phylum porifera phylum cnidaria (coelenterata) phylum platyhelminthes phylum rhynchocoela (nemertea, nemertinea) phylum nematoda phylum mollusca phylum annelida phylum arthropoda phylum echinodermata
Biometry: The Principles and Practice of Statistics in Biological Research
TLDR
This chapter discusses statistical power and sample size in the Analysis of Variance, as well as meta-Analysis and Miscellaneous Methods, and some of the methods used in meta-analysis.
Die Ultrastruktur von Trichoplax adhaerens F
  • E. Schulze. Cytobiologie
  • 1971
Pattern and Diversity in Reproduction and Development
...
...