Overview

Distribution

Found throughout the tropical Indo-West Pacific.

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Source: Cataloging Diversity in the Sacoglossa

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Ecology

Habitat

This animal prefers shallow water and is usually buried or partially buried in the sand.

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Source: Cataloging Diversity in the Sacoglossa

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Depth range based on 89 specimens in 1 taxon.
Water temperature and chemistry ranges based on 89 samples.

Environmental ranges
  Depth range (m): 1.5 - 12
  Temperature range (°C): 23.044 - 29.241
  Nitrate (umol/L): 0.054 - 0.806
  Salinity (PPS): 33.594 - 35.225
  Oxygen (ml/l): 4.346 - 4.961
  Phosphate (umol/l): 0.075 - 0.197
  Silicate (umol/l): 1.306 - 5.231

Graphical representation

Depth range (m): 1.5 - 12

Temperature range (°C): 23.044 - 29.241

Nitrate (umol/L): 0.054 - 0.806

Salinity (PPS): 33.594 - 35.225

Oxygen (ml/l): 4.346 - 4.961

Phosphate (umol/l): 0.075 - 0.197

Silicate (umol/l): 1.306 - 5.231
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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General Ecology

Ecology

This sea slug ingests photosynthetically active chloroplasts from the algae it eats and retains them within specialized cells of its digestive diverticula (digestive tract) (Greene, 1970). In laboratory studies, Evertsen et al. (2007) found that these ingested chloroplasts continued to photosynthesize within P. ocellatus for 335 days, which is longest record of chloroplast activity in any tested sacoglossan.

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Source: Cataloging Diversity in the Sacoglossa

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Molecular Biology and Genetics

Molecular Biology

Barcode data: Plakobranchus ocellatus

The following is a representative barcode sequence, the centroid of all available sequences for this species.


No available public DNA sequences.

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Source: Barcode of Life Data Systems (BOLD)

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Statistics of barcoding coverage: Plakobranchus ocellatus

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 36
Specimens with Barcodes: 36
Species With Barcodes: 1
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Source: Barcode of Life Data Systems (BOLD)

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Barcode data: Placobranchus ocellatus

The following is a representative barcode sequence, the centroid of all available sequences for this species.


There are 2 barcode sequences available from BOLD and GenBank.  Below is a sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species.  See the BOLD taxonomy browser for more complete information about this specimen and other sequences.

TACTTATATATAGTNTTCGGTATATGGTGCGGTTTAGTAGGTACTGGGTTA---AGTTTATTAATTCGTTTTGAATTAGGAACTTCCGGTGCATTTTTAGGGGAT---GATCATTTTTACAATGTAATCGTGACGGCCCATGCTTTTGTTATAATTTTCTTTATAGTTATACCTTTAATAATCGGAGGATTTGGCAACTGGATAGTTCCCATTTTA---ATTGGAGCTCCAGATATAAGTTTCCCTCGTATAAATAATATAAGTTTCTGGTTGCTGCCACCTTCTTTTATTCTTCTTCTATGTTCAAGTCTCGTTGAGGGAGGTGCAGGAACTGGATGAACTGTGTACCCTCCTCTAAGGGGCCCTGTTGGACACGGAGGTGCGTCAGTGGACTTG---GCTATTTTTTCACTGCATTTGGCGGGGATGTCCTCTATTCTAGGTGCTGTAAACTTTATTACTACTATTTTCAACATACGTTCTCCTGGGATAAGTATGGAACGTTTAAGGTTGTTCGTTTGATCTGTCTTAGTTACAGCCTTCCTACTTCTTTTGTCCTTACCTGTTCTTGCTGGA---GCAATTACTATACTTCTCACTGATCGAAATTTTAATACTAGATTTTTTGATCCTGCTGGAGGTGGAGATCCTATCTTATATCAACATTTA
-- end --

Download FASTA File
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Source: Barcode of Life Data Systems (BOLD)

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Statistics of barcoding coverage: Placobranchus ocellatus

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 2
Specimens with Barcodes: 2
Species With Barcodes: 1
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Genomic DNA is available from 2 specimens with morphological vouchers housed at National Institute of Water & Atmospheric Research
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Source: Ocean Genome Resource

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Relevance to Humans and Ecosystems

Benefits

References

Evertsen, Jussi; Burghardt, Ingo; Johnsen, Geir; and Waegele, Heike. 2007. Retention of functional chloroplasts in some sacoglossans from the Indo-Pacific and Mediterranean Marine Biology (Berlin) 151 (6): 2159-2166.

Rudman, W.B., 1998 (December 11) Plakobranchus ocellatus van Hasselt, 1824. [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/placocel

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Wikipedia

Plakobranchus ocellatus

Plakobranchus ocellatus is a species of sea slug, a sacoglossan, a marine opisthobranch gastropod mollusk in the family Plakobranchidae.

Plakobranchus ocellatus, head end towards the left

Contents

Distribution

This species occurs in the Indo-Pacific.[1]

Description

The body is broad, truncate, and rather flattened, up to 4 cm long.[1] The ground colour is usually pale green, beige, or cream with large ocelli (spots similar to eyespots) of cream, brown, pink, and purple in varying shades.[1] The sole of the foot also has ocelli.[1]

Dorsal view of a freshly collected intact Plakobranchus ocellatus showing its head, rhinophores and parapodia.
Dorsal view of an anesthetized individual of Plakobranchus ocellatus with spread parapodia. Stomach and branched digestive glands are visible. The tissue region in the red square was dissected and used for DNA extraction in the study by Maeda T. et al. (2012).[2]

Habitat

These seaslugs live in sheltered, shallow water habitats with stones or gravel and silt.[1]

Their diet is unknown.[1]

References

This article incorporates CC-BY-3.0 text from the reference.[1]

  1. ^ a b c d e f g Gofas, S. (2010). Plakobranchus ocellatus (van Hasselt). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=451657 on 2010-05-18
  2. ^ Maeda T., Hirose E., Chikaraishi Y., Kawato M., Takishita K. et al. (2012). "Algivore or Phototroph? Plakobranchus ocellatus (Gastropoda) Continuously Acquires Kleptoplasts and Nutrition from Multiple Algal Species in Nature". PLoS ONE 7(7): e42024. doi:10.1371/journal.pone.0042024
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