Ecology

Associations

Known prey organisms

Crassostrea angulata preys on:
detritus

Based on studies in:
Portugal (Estuarine)

This list may not be complete but is based on published studies.
  • L. Saldanha, Estudio Ambiental do Estuario do Tejo, Publ. no. 5(4) (CNA/Tejo, Lisbon, 1980).
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Crassostrea angulata

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


There are 11 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.

CGGGGGACATTTATATCAACAAATCATTTAGACATTGGAAGGTTTTATATAGTATTTGGATTTTGAGCTGTTCTTGCGGGAACTAGGTTTAGGTCT---CTTATTCGTTGGAGGCTTTATAACCCCGGAGCTAAGTTTTTAGAC---CCCGTGACTTATAATGCAGTTGTAACTAGGCATGCGTTGGTTATGATTTTTTTCTTTGTTATACCCGTGATAATTGGGGGGTTTGGTAACTGGCTTATCCCTTTGATGCTTCAAGTAGCA---GACATGCAATTTCCTCGATTAAATGCATTTAGATTTTGAGTTTTGCCAGGGTCTCTTTATCTTATGCTTATGTCTAACATCGTAGAAAACGGAGTTGGGGCAGGGTGGACAATTTACCCTCCTTTATCAACTTACTCTTATCAT---GGAGTTTGCATGGACCTT---GCAATTTTAAGCCTTCACCTTGCCGGTATTAGCTCTATTTTCAGGTCAATTAATTTTATAGTAACGATTAGAAATATGCGATCTGTTGGG------GGCCATTTACTAGCACTATTTCCCTGATCTATTAAGGTTACTTCATTCTTGCTTTTGACTACTCTCCCAGTGTTAGCTGGA---GGTCTTACTATGCTTTTGACTGATCGTCATTTTAATACCTCTTTTTTCGACCCTGTCGGAGGGGGGGACCCTGTTTTATTTCAGCATTTGTTTTGATTTTTTGGTCACCCTGAGGTGTATGTCCTTATTCTTCCAGGTTTTGGAATAATTTCTCATGTCTTATGTTTTTGGTCAAGTAAAAAG---ACTGCATACGGAAATATGGGAATGTTCTATGCAATACTTAACATTGGGTTCTTAGGGTTTATTGTCTGGGGACATCACATGTTTGTGGCTGGAATGGATATTGATACGCGTGCTTATTTTAGTGCTGCCACTGTTATTATTGCAGTGCCAACTGGTATTAAGGTGTTTGCATGAATTAGC---ACAATGTTAGGCTCT---AAAGTTTCAACTCAAGCACCTATGTTGTGGTCTACTGGTTTTATTATTCTTTTTACAACAGGGGGTCTTACAGGACTTATTCTATCAAGAGCTTCAGTAGATGTGACGCTTCACGACACTTATTTTGTAACTGGTCATTTTCATTACGTT---TTATCAATGGGTGCGGTGTTTACAATTTTAGCTGGGTTTACTCACTGATTTCCTCTTGTTGCTAAGGTTATAATGCATCGGCAAAAAATGAAAAGTCATTTTCTAGCAATGTTTTTAGGTGTCAATGCAGCATTTTTGCCGCATCATTTTTTGGGTTTGGCTGGTATGCCACGT---CGAGTAGTTGACTATCCAGATCATTTTTGA---TTTTGAAATAAAGTGTCTACATTTGGCTCTCATTTGAGCACTGGCTCATTGTTATTTTTTGTGTTTTTGTTATGAGAGTCATTTATTGCTCAACGGCCAGTT---ATTTCAGTGCGAAACACTTCT---AGG
-- end --

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Statistics of barcoding coverage: Crassostrea angulata

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 11
Specimens with Barcodes: 11
Species With Barcodes: 1
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Wikipedia

Portuguese oyster

The Portuguese oyster, Crassostrea angulata, is a species of oyster found in the southwest Iberian Peninsula, closely related to the Pacific oyster. Although first identified as a native European species, genetic studies[1]<ref[5], Boudry P et al. 1998. Differentiation between populations of the Portuguese oyster, Crassostrea angulata (Lamark) and the Pacific oyster, Crassostrea gigas (Thunberg), revealed by mtDNA RFLP analysis. Journal of Experimental Marine Biology and Ecology.></ref> have suggested the Portuguese oyster originated from the Pacific coast of Asia[2][3] and was introduced to Europe by Portuguese trading ships in the 16th century. The species is usually found in coastal river mouths and estuaries.

Commercial value[edit]

Prior to decimation by iridoviral disease in 1969,[4] C. angulata was extensively cultivated in France and Portugal as part of the edible oyster industry. The Pacific oyster, which is more resistant to the disease, was introduced in the 1970s and has since replaced C. angulata as the main commercial species. Currently, the Portuguese oyster is not cultured commercially.

References[edit]

  1. ^ [1], Michinina S and Rebordinos L. 1997. Genetic differentiation in marine and estuarine natural populations of Crassostrea angulata. Marine Ecology Progress Series.
  2. ^ [2], Lapegue S, et al. 2004. Evidence for the presence of the Portuguese oyster, Crassostrea angulata, in northern China. Journal of Shellfisheries Research.
  3. ^ [3], Boudry P et al. 1998. Differentiation between populations of the Portuguese oyster, Crassostrea angulata (Lamark) and the Pacific oyster, Crassostrea gigas (Thunberg), revealed by mtDNA RFLP analysis. Journal of Experimental Marine Biology and Ecology.
  4. ^ [4], Gill Disease of Portuguese oysters. Fisheries and Oceans Canada.
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