Overview

Comprehensive Description

Biology: Nematocysts

More info
LocationImageCnidae TypeRange of
Lengths (m)
Range of
Widths (m)
nNState
Dunn D. F., 1981
Actinopharynx
basitrichs  13.1 - 26.1  x  1.8 - 3.9  35 / 3 Unfired
microbasic p-mastigophores  26.2 - 32.8  x  4.9 - 6.2  (7) 14 / 2 Unfired
spirocysts  22.1 - 36.9  x  3.3 - 4.9  8 / 3 Unfired
Column
basitrichs  5.6 - 10.7  x  1.3 - 3.1  20 / 2 Unfired
basitrichs  34.4 - 39.2  x  2.2 - 2.8  8 / 2 Unfired
basitrichs  13.9 - 20  x  1.6 - 2.6  48 / 5 Unfired
Filaments
basitrichs  12.8 - 26.2  x  1.6 - 3.3  46 / 5 Unfired
basitrichs  30.7 - 37.7  (40.9) x  3.8 - 5.1  28 / 3 Unfired
microbasic p-mastigophores  15.4 - 20  x  3.1 - 4.6  14 / 2 Unfired
microbasic p-mastigophores  23 - 31  x  3.8 - 6.4  (7.2) 29 / 4 Unfired
spirocysts (18)  20.5 - 28.7  x (2.7)  3.3 - 4.1  11 / 2 Unfired
Tentacles
basitrichs  12.8 - 15.4  x  1.8 - 2.6  10 / 1 Unfired
basitrichs (16.4)  18.3 - 25.6  (35.2) x  2.1 - 3.3  56 / 7 Unfired
spirocysts  15.4 - 33.3  x  2.1 - 3.8  51 / 7 Unfired
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Ecology

Habitat

Depth range based on 2 specimens in 1 taxon.

Environmental ranges
  Depth range (m): 4 - 4
 
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Depth range based on 1 specimen in 1 taxon.
Water temperature and chemistry ranges based on 1 sample.

Environmental ranges
  Depth range (m): 0 - 0
  Temperature range (°C): 29.382 - 29.382
  Nitrate (umol/L): 0.566 - 0.566
  Salinity (PPS): 34.266 - 34.266
  Oxygen (ml/l): 4.519 - 4.519
  Phosphate (umol/l): 0.161 - 0.161
  Silicate (umol/l): 3.728 - 3.728
 
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Depth range based on 5 specimens in 1 taxon.
Water temperature and chemistry ranges based on 1 sample.

Environmental ranges
  Depth range (m): 1 - 19
  Temperature range (°C): 26.803 - 26.803
  Nitrate (umol/L): 0.090 - 0.090
  Salinity (PPS): 34.975 - 34.975
  Oxygen (ml/l): 4.666 - 4.666
  Phosphate (umol/l): 0.131 - 0.131
  Silicate (umol/l): 1.005 - 1.005

Graphical representation

Depth range (m): 1 - 19
 
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Associations

Biological Associations

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Algal symbionts
Zooxanthellae
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Wikipedia

Macrodactyla doreensis

Macrodactyla doreensis, common names long tentacle anemone and corkscrew tentacle sea anemone,[1] is a species of sea anemone in the family Actiniidae.[2]

Contents

Description

Macrodactyla doreensis has relatively few tentacles. They are all similar to one another in size and colour, being purplish-gray to brown. Each grows to about 1.75 cm, are sinuous, and each taper evenly toward the tip. In some cases they have a corkscrew shape.

The oral disc is normally purplish-gray to brown, and sometimes has a green cast. It has a flared shape, and grows to a maximum of 5 cm wide, but is often far smaller. It has white lines that are oriented radially, sometimes extending onto the tentacles.

This anemone remains at the surface of the sediment, with the column buried. The lower portion of the column is a dull orange to bright red colour, with the upper portion being brownish, containing a round to ovoid verrucae in rows oriented longitudinally.

Distribution

This species is found in Japan, and south to the waters of New Guinea and northern Australia.[1]

Behaviour

The tentacles of Macrodactyla doreensis may either shrivel, or stick to hand of a person who disturbs it. This anemone can retract entirely into the sediment.[1]

Habitat

This species is commonly found at depths of 5 metres or less in muddy bottoms, and is commonly seen without fish present.

Symbionts

References

  1. ^ a b c "Anemone fishes and their host sea anemones". Nhm.ku.edu. Retrieved 2012-12-13. 
  2. ^ "WoRMS - World Register of Marine Species - Macrodactyla doreensis (Quoy & Gaimard, 1833)". Marinespecies.org. Retrieved 2012-12-13. 
  3. ^ "Anemone fishes and their host sea anemones". Nhm.ku.edu. Retrieved 2012-12-14. 
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