Overview

Comprehensive Description

Biology/Natural History: This is one of the few marine species (along with sea cucumbers) that appears to use anal respiration.

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© Rosario Beach Marine Laboratory

Source: Invertebrates of the Salish Sea

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Members of Family Aphroditidae have a wide, flat dorsal surface nearly or completely covered with a tangle of elongated notosetae which are so long and narrow that they look like a feltlike tangle of coarse, dark hairs. The notosetae are covering flattened plates (elytra) but these cannot usually be seen. Their body segments are wider than long and this, combined with the feltlike tangle of notosetae, make the animals look like a dead mouse when viewed from above. Aphrodite japonica has elytra completely hidden by the notosetae, which are smooth and do not have barbs near their tips. The palps are only 4-7x as long as the prostomium and the median antenna is at least as long as the prostomium. The body has between 38-43 segments. The neurosetae sometimes have hairs or short spines, and the most ventral neurosetae are coppery or gold in color.
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© Rosario Beach Marine Laboratory

Source: Invertebrates of the Salish Sea

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Distribution

Geographical Range: Reports include records from British Columbia through coastal Washington and California to Costa Rica, and our marine station has several specimens collected in the area around Rosario and the San Juan Islands. Presumably they may also be found in Japan.

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© Rosario Beach Marine Laboratory

Source: Invertebrates of the Salish Sea

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Physical Description

Look Alikes

How to Distinguish from Similar Species: Laetmonice pellucida has elytra not completely covered by notosetae. Aphrodita longipalpa has palps 8-11x as long as the prostomium. Aphrodita parva has a body of only about 27 segments. Aphrodita negligens has a club-shaped median antenna which is shorter than the prostomium. Aphrodita refulgida has smooth neurosetae and its ventralmost neurosetae are bright green and iridescent.
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© Rosario Beach Marine Laboratory

Source: Invertebrates of the Salish Sea

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Ecology

Habitat

Depth range based on 10 specimens in 1 taxon.
Water temperature and chemistry ranges based on 6 samples.

Environmental ranges
  Depth range (m): 15.5 - 146
  Temperature range (°C): 6.893 - 15.217
  Nitrate (umol/L): 9.754 - 28.359
  Salinity (PPS): 31.657 - 35.022
  Oxygen (ml/l): 1.176 - 6.360
  Phosphate (umol/l): 1.305 - 2.139
  Silicate (umol/l): 19.733 - 51.234

Graphical representation

Depth range (m): 15.5 - 146

Temperature range (°C): 6.893 - 15.217

Nitrate (umol/L): 9.754 - 28.359

Salinity (PPS): 31.657 - 35.022

Oxygen (ml/l): 1.176 - 6.360

Phosphate (umol/l): 1.305 - 2.139

Silicate (umol/l): 19.733 - 51.234
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Depth Range: Subtidal to at least 90 m

Habitat: Buried in mud and sand.

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© Rosario Beach Marine Laboratory

Source: Invertebrates of the Salish Sea

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Aphrodita japonica

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 3
Species With Barcodes: 1
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Source: Barcode of Life Data Systems (BOLD)

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