Overview

Comprehensive Description

Biology: Nematocysts

More info
LocationImageCnidae TypeRange of
Lengths (m)
Range of
Widths (m)
nNState
Carlgren O., 1940
Actinopharynx
N/A basitrichs  22 - 26  x  3 -   / fired
N/A microbasic p-mastigophores  29 -   x  5 -   /
Column
N/A basitrichs  28 - 32.5  x  2.5 -   /
N/A basitrichs  17 - 19.5  x  2.5 -   /
Filaments
N/A basitrichs  14 - 17  x  1.5 - 2  /
N/A basitrichs  27.5 - 31  x  3.5 - 4  /
N/A microbasic p-mastigophores  27 - 31  x  5 - 7  /
Tentacles
N/A basitrichs  19 - 34  x  2.5 -   /
Dunn D. F., 1981
Actinopharynx
basitrichs  23 - 33.6  x  2.5 - 3.5  19 / 3 Unfired
spirocysts  20.5 - 26.2  (31.2) x  3.3 - 4.1  12 / 2 Unfired
Column
basitrichs  17.2 - 22.1  x  2.5 - 2.9  12 / 3 Unfired
basitrichs  28.7 - 34.4  x  2.5 - 3.1  6 / 2 Unfired
spirocysts (18)  27.1 - 32  x  2.9 - 3.3  6 / 2 Unfired
Filaments
basitrichs  11.5 - 17.2  x  2.3 - 2.5  7 / 2 Unfired
basitrichs (24.6)  27.1 - 36.9  (40.2) x  2.3 - 3.3  26 / 5 Unfired
microbasic p-mastigophores  26.2 - 31.2  x (4.1)  5.3 - 5.9  7 / 2 Unfired
spirocysts (19)  21.3 - 29.5  x  2.5 - 3.3  6 / 3 Unfired
Tentacles
basitrichs  28.7 - 36.9  x  2.5 - 3.3  17 / 3 Unfired
spirocysts  16.4 - 34.4  x  2.5 - 3.9  16 / 3 Unfired
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Ecology

Habitat

Depth range based on 7 specimens in 1 taxon.
Water temperature and chemistry ranges based on 2 samples.

Environmental ranges
  Depth range (m): 0 - 2
  Temperature range (°C): 27.413 - 27.678
  Nitrate (umol/L): 0.221 - 0.253
  Salinity (PPS): 35.179 - 35.270
  Oxygen (ml/l): 4.631 - 4.692
  Phosphate (umol/l): 0.063 - 0.115
  Silicate (umol/l): 2.090 - 2.445

Graphical representation

Depth range (m): 0 - 2

Temperature range (°C): 27.413 - 27.678

Nitrate (umol/L): 0.221 - 0.253

Salinity (PPS): 35.179 - 35.270

Oxygen (ml/l): 4.631 - 4.692

Phosphate (umol/l): 0.063 - 0.115

Silicate (umol/l): 2.090 - 2.445
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Wikipedia

Stichodactyla helianthus

Stichodactyla helianthus is a sea anemone of the family Stichodactylidae. Helianthus stems from the Greek words ἡλιος (meaning sun), and ἀνθος, meaning flower. S. helianthus is also referred to as the 'sun anemone'. S. helianthus is a large, green, sessile, carpet-like sea anemone, from the Caribbean. It lives in shallow areas with mild to strong currents. The anemone crab (Mithraculus cinctimanus) is often associated with it, being found among the tentacles or on the column and margin of the oral disc.[2]

S. helianthus excretes stichodactyla toxin. It is believed that it excretes toxins mainly to protect itself from the spiny lobster.[3]

References[edit]

  1. ^ Fautin, Daphne (2012). "Stichodactyla helianthus (Ellis, 1768)". World Register of Marine Species. Retrieved 2012-10-17. 
  2. ^ Colin, Patrick L. (1978). Marine Invertebrates and Plants of the Living Reef. T.F.H. Publications. p. 367. ISBN 0-86622-875-6. 
  3. ^ Norton RS, Pennington MW, Wulff H (December 2004). "Potassium channel blockade by the sea anemone toxin ShK for the treatment of multiple sclerosis and other autoimmune diseases". Curr. Med. Chem. 11 (23): 3041–52. doi:10.2174/0929867043363947. PMID 15578998. 
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