Overview

Brief Summary

Living Material

These anemones are easily kept in the laboratory for considerable periods of time, if they are maintained in aquaria with adequate supplies of running sea water.

  • Gemmill, J. F., 1920. The development of the sea-anemones Metridium dianthus (Ellis) and Adamsia palliata (Bohad). Phil. Trans. Roy. Soc., London, ser. B, 209: 351-375.
  • Mcmurrich, J. P., 1891. Contributions on the morphology of the Actinozoa. Ii. On the development of the Hexactiniae. J. Morph., 4: 303-330.
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© Donald P. Costello and Catherine Henley

Source: Biodiversity Literature Datasets

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Living Material

These anemones are easily kept in the laboratory for considerable periods of time, if they are maintained in aquaria with adequate supplies of running sea water.

  • Gemmill, J. F., 1920. The development of the sea-anemones Metridium dianthus (Ellis) and Adamsia palliata (Bohad). Phil. Trans. Roy. Soc., London, ser. B, 209: 351-375.
  • Mcmurrich, J. P., 1891. Contributions on the morphology of the Actinozoa. Ii. On the development of the Hexactiniae. J. Morph., 4: 303-330.
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© Donald P. Costello and Catherine Henley

Source: Egg Characteristics and Breeding Season for Woods Hole Species

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Distribution

Newfoundland, York Harbour
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© WoRMS for SMEBD

Source: World Register of Marine Species

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Ecology

Habitat

Depth range based on 23 specimens in 1 taxon.
Water temperature and chemistry ranges based on 7 samples.

Environmental ranges
  Depth range (m): 0 - 93
  Temperature range (°C): 5.635 - 8.723
  Nitrate (umol/L): 1.885 - 6.641
  Salinity (PPS): 31.477 - 33.138
  Oxygen (ml/l): 6.329 - 7.029
  Phosphate (umol/l): 0.543 - 0.737
  Silicate (umol/l): 2.422 - 4.495

Graphical representation

Depth range (m): 0 - 93

Temperature range (°C): 5.635 - 8.723

Nitrate (umol/L): 1.885 - 6.641

Salinity (PPS): 31.477 - 33.138

Oxygen (ml/l): 6.329 - 7.029

Phosphate (umol/l): 0.543 - 0.737

Silicate (umol/l): 2.422 - 4.495
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
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Depth range based on 23 specimens in 1 taxon.
Water temperature and chemistry ranges based on 7 samples.

Environmental ranges
  Depth range (m): 0 - 93
  Temperature range (°C): 5.635 - 8.723
  Nitrate (umol/L): 1.885 - 6.641
  Salinity (PPS): 31.477 - 33.138
  Oxygen (ml/l): 6.329 - 7.029
  Phosphate (umol/l): 0.543 - 0.737
  Silicate (umol/l): 2.422 - 4.495

Graphical representation

Depth range (m): 0 - 93

Temperature range (°C): 5.635 - 8.723

Nitrate (umol/L): 1.885 - 6.641

Salinity (PPS): 31.477 - 33.138

Oxygen (ml/l): 6.329 - 7.029

Phosphate (umol/l): 0.543 - 0.737

Silicate (umol/l): 2.422 - 4.495
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Life History and Behavior

Life Cycle

Time Table of Development

The young gastrula is top-shaped, the oral surface being somewhat flattened. In the older larva the body is lengthened, and a tuft of long, stiff cilia appears on the anterior (aboral) pole. The stomodeum is well formed, and the two lateral mesenteries appear as conspicuous folds in the gastric cavity. Nematocysts are present at both the oral and the aboral poles of the developing larva. Although temporary attachments (probably for feeding purposes) are made by the oral surface, the permanent attachment occurs at the aboral pole.

  • Gemmill, J. F., 1920. The development of the sea-anemones Metridium dianthus (Ellis) and Adamsia palliata (Bohad). Phil. Trans. Roy. Soc., London, ser. B, 209: 351-375.
  • Mcmurrich, J. P., 1891. Contributions on the morphology of the Actinozoa. Ii. On the development of the Hexactiniae. J. Morph., 4: 303-330.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Donald P. Costello and Catherine Henley

Source: Biodiversity Literature Datasets

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Time Table of Development

Metridium is a large yellow-brown anemone, which is common along the Atlantic coast. It has a broad pedal disc and a lobed oral disc bearing many short tentacles.

  • Gemmill, J. F., 1920. The development of the sea-anemones Metridium dianthus (Ellis) and Adamsia palliata (Bohad). Phil. Trans. Roy. Soc., London, ser. B, 209: 351-375.
  • Mcmurrich, J. P., 1891. Contributions on the morphology of the Actinozoa. Ii. On the development of the Hexactiniae. J. Morph., 4: 303-330.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Donald P. Costello and Catherine Henley

Source: Biodiversity Literature Datasets

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Time Table of Development

The young gastrula is top-shaped, the oral surface being somewhat flattened. In the older larva the body is lengthened, and a tuft of long, stiff cilia appears on the anterior (aboral) pole. The stomodeum is well formed, and the two lateral mesenteries appear as conspicuous folds in the gastric cavity. Nematocysts are present at both the oral and the aboral poles of the developing larva. Although temporary attachments (probably for feeding purposes) are made by the oral surface, the permanent attachment occurs at the aboral pole.

  • Gemmill, J. F., 1920. The development of the sea-anemones Metridium dianthus (Ellis) and Adamsia palliata (Bohad). Phil. Trans. Roy. Soc., London, ser. B, 209: 351-375.
  • Mcmurrich, J. P., 1891. Contributions on the morphology of the Actinozoa. Ii. On the development of the Hexactiniae. J. Morph., 4: 303-330.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Donald P. Costello and Catherine Henley

Source: Egg Characteristics and Breeding Season for Woods Hole Species

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Time Table of Development

Metridium is a large yellow-brown anemone, which is common along the Atlantic coast. It has a broad pedal disc and a lobed oral disc bearing many short tentacles.

  • Gemmill, J. F., 1920. The development of the sea-anemones Metridium dianthus (Ellis) and Adamsia palliata (Bohad). Phil. Trans. Roy. Soc., London, ser. B, 209: 351-375.
  • Mcmurrich, J. P., 1891. Contributions on the morphology of the Actinozoa. Ii. On the development of the Hexactiniae. J. Morph., 4: 303-330.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Donald P. Costello and Catherine Henley

Source: Egg Characteristics and Breeding Season for Woods Hole Species

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Reproduction

Fertilization and Cleavage

No details of the exact developmental rate are available, although the first cleavage is said to occur 45 minutes after insemination. Fixation occurs in about a month.

  • Gemmill, J. F., 1920. The development of the sea-anemones Metridium dianthus (Ellis) and Adamsia palliata (Bohad). Phil. Trans. Roy. Soc., London, ser. B, 209: 351-375.
  • Mcmurrich, J. P., 1891. Contributions on the morphology of the Actinozoa. Ii. On the development of the Hexactiniae. J. Morph., 4: 303-330.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Donald P. Costello and Catherine Henley

Source: Biodiversity Literature Datasets

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The Unfertilized Ovum

Fertilization occurs soon after the eggs are shed, as the eggs are sinking to the bottom. Cleavage is total and slightly irregular, being either equal or sub-equal. The hollow, single-layered blastula is converted into a gastrula by invagination.

  • Gemmill, J. F., 1920. The development of the sea-anemones Metridium dianthus (Ellis) and Adamsia palliata (Bohad). Phil. Trans. Roy. Soc., London, ser. B, 209: 351-375.
  • Mcmurrich, J. P., 1891. Contributions on the morphology of the Actinozoa. Ii. On the development of the Hexactiniae. J. Morph., 4: 303-330.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Donald P. Costello and Catherine Henley

Source: Biodiversity Literature Datasets

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Fertilization and Cleavage

No details of the exact developmental rate are available, although the first cleavage is said to occur 45 minutes after insemination. Fixation occurs in about a month.

  • Gemmill, J. F., 1920. The development of the sea-anemones Metridium dianthus (Ellis) and Adamsia palliata (Bohad). Phil. Trans. Roy. Soc., London, ser. B, 209: 351-375.
  • Mcmurrich, J. P., 1891. Contributions on the morphology of the Actinozoa. Ii. On the development of the Hexactiniae. J. Morph., 4: 303-330.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Donald P. Costello and Catherine Henley

Source: Egg Characteristics and Breeding Season for Woods Hole Species

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The Unfertilized Ovum

Fertilization occurs soon after the eggs are shed, as the eggs are sinking to the bottom. Cleavage is total and slightly irregular, being either equal or sub-equal. The hollow, single-layered blastula is converted into a gastrula by invagination.

  • Gemmill, J. F., 1920. The development of the sea-anemones Metridium dianthus (Ellis) and Adamsia palliata (Bohad). Phil. Trans. Roy. Soc., London, ser. B, 209: 351-375.
  • Mcmurrich, J. P., 1891. Contributions on the morphology of the Actinozoa. Ii. On the development of the Hexactiniae. J. Morph., 4: 303-330.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Donald P. Costello and Catherine Henley

Source: Egg Characteristics and Breeding Season for Woods Hole Species

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Relevance to Humans and Ecosystems

Benefits

Methods of Observation

The eggs are mature and surrounded by a delicate membrane at the time of shedding; they are spherical, opaque, and usually pink in color. McMurrich (1891) reports that they measure between 100 and 160 microns in diameter.

  • Gemmill, J. F., 1920. The development of the sea-anemones Metridium dianthus (Ellis) and Adamsia palliata (Bohad). Phil. Trans. Roy. Soc., London, ser. B, 209: 351-375.
  • Mcmurrich, J. P., 1891. Contributions on the morphology of the Actinozoa. Ii. On the development of the Hexactiniae. J. Morph., 4: 303-330.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Donald P. Costello and Catherine Henley

Source: Biodiversity Literature Datasets

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Care of Adults

The sex of the mature animals cannot be ascertained macroscopically. If a number of ripe individuals are placed together in large dishes containing sea water, natural spawning and fertilization will occur. The same individuals have been shown to spawn several times, at intervals of two to ten days, for a month. Since the eggs are heavy, they will sink to the bottoms of the containers; they can be picked up and transferred to fingerbowls with a pipette. The jelly, which may surround the eggs when they leave the stomodeum, soon dissolves. The larvae can be maintained in the laboratory if they are changed to dishes of fresh, aerated sea water at intervals of a few days.

  • Gemmill, J. F., 1920. The development of the sea-anemones Metridium dianthus (Ellis) and Adamsia palliata (Bohad). Phil. Trans. Roy. Soc., London, ser. B, 209: 351-375.
  • Mcmurrich, J. P., 1891. Contributions on the morphology of the Actinozoa. Ii. On the development of the Hexactiniae. J. Morph., 4: 303-330.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Donald P. Costello and Catherine Henley

Source: Biodiversity Literature Datasets

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Methods of Observation

The eggs are mature and surrounded by a delicate membrane at the time of shedding; they are spherical, opaque, and usually pink in color. McMurrich (1891) reports that they measure between 100 and 160 microns in diameter.

  • Gemmill, J. F., 1920. The development of the sea-anemones Metridium dianthus (Ellis) and Adamsia palliata (Bohad). Phil. Trans. Roy. Soc., London, ser. B, 209: 351-375.
  • Mcmurrich, J. P., 1891. Contributions on the morphology of the Actinozoa. Ii. On the development of the Hexactiniae. J. Morph., 4: 303-330.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Donald P. Costello and Catherine Henley

Source: Egg Characteristics and Breeding Season for Woods Hole Species

Unreviewed

Article rating from 0 people

Default rating: 2.5 of 5

Care of Adults

The sex of the mature animals cannot be ascertained macroscopically. If a number of ripe individuals are placed together in large dishes containing sea water, natural spawning and fertilization will occur. The same individuals have been shown to spawn several times, at intervals of two to ten days, for a month. Since the eggs are heavy, they will sink to the bottoms of the containers; they can be picked up and transferred to fingerbowls with a pipette. The jelly, which may surround the eggs when they leave the stomodeum, soon dissolves. The larvae can be maintained in the laboratory if they are changed to dishes of fresh, aerated sea water at intervals of a few days.

  • Gemmill, J. F., 1920. The development of the sea-anemones Metridium dianthus (Ellis) and Adamsia palliata (Bohad). Phil. Trans. Roy. Soc., London, ser. B, 209: 351-375.
  • Mcmurrich, J. P., 1891. Contributions on the morphology of the Actinozoa. Ii. On the development of the Hexactiniae. J. Morph., 4: 303-330.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Donald P. Costello and Catherine Henley

Source: Egg Characteristics and Breeding Season for Woods Hole Species

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