Overview

Comprehensive Description

Description

This nudibranch is easily recognised by the overall pink-purple coloration of the body and processes. Opaque white pigment is present on the extremities and as white rings at the tips of the cerata. The digestive gland is usually red in colour, partly masked by the purple hue. Typically about 20mm in length. Structurally similar to other Flabellinids, but distinguished by its purple hue. Flabellina affinis shares this coloration, but has lamellate rhinophores and more pedunculate cerata and is found in the Mediterranean Sea, but not further north.
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Distribution

Common and widespread but rarely abundant, all round the British Isles and south to the Mediterranean Sea.
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Ecology

Habitat

Depth range based on 54 specimens in 1 taxon.
Water temperature and chemistry ranges based on 6 samples.

Environmental ranges
  Depth range (m): 0.35 - 39.8
  Temperature range (°C): 11.054 - 12.270
  Nitrate (umol/L): 4.820 - 6.758
  Salinity (PPS): 35.229 - 35.343
  Oxygen (ml/l): 6.151 - 6.174
  Phosphate (umol/l): 0.373 - 0.485
  Silicate (umol/l): 2.512 - 2.726

Graphical representation

Depth range (m): 0.35 - 39.8

Temperature range (°C): 11.054 - 12.270

Nitrate (umol/L): 4.820 - 6.758

Salinity (PPS): 35.229 - 35.343

Oxygen (ml/l): 6.151 - 6.174

Phosphate (umol/l): 0.373 - 0.485

Silicate (umol/l): 2.512 - 2.726
 
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Found usually in ones or twos in moderately exposed rocky sublittoral areas. The food is a sparsely-branched, spindly species of Eudendrium which has not yet been identified. The spawn is a thin white thread normally wound round the Eudendrium on which the animals are feeding.
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Flabellina pedata

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 7
Species With Barcodes: 1
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Source: Barcode of Life Data Systems (BOLD)

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Wikipedia

Flabellina pedata

Flabellina pedata is a species of sea slug, an aolid nudibranch, a marine gastropod mollusk in the family Flabellinidae.[2]

Contents

Description

This species has a distinctive pink-purple coloration over its entire body. In the Mediterranean it can grow to about 20 mm long, while specimens in the Atlantic Ocean may grow to 50 mm.[1] The certa have white rings at the tip and occur in bunches which are joined together at their bases. The extremities are an opaque white in colour. Normally, the digestive glad is red.[3]

Distribution

Flabellina pedata is found as far north as Trøndelag, Norway,[4] around the entire British Isles, and down to the Mediterranean. Although it is a common species, it is seldom found in abundance.[3]

Habitat

This species occurs, often solitary or in pairs, in sublittoral areas on hard substrate such as somewhat exposed rocky surfaces.[3]

Diet

This sea slug eats an as-yet-unidentified Eudendrium species, a kind of Hydrozoa. It also lays a thin white egg ribbon or thread on this animal, winding it around the body.[3]

References

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