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GB/T 20552: Historical versions
| Std ID | Version | USD | Buy | Deliver [PDF] in | Title (Description) |
| GB/T 20552-2023 | English | 209 |
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Pacific oyster
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| GB 20552-2006 | English | 279 |
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[GB/T 20552-2006] Pacific oyster
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Basic data
| Standard ID | GB/T 20552-2023 (GB/T20552-2023) |
| Description (Translated English) | Pacific oyster |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | B51 |
| Classification of International Standard | 65.150 |
| Word Count Estimation | 10,185 |
| Date of Issue | 2023-12-28 |
| Date of Implementation | 2024-07-01 |
| Older Standard (superseded by this standard) | GB/T 20552-2006 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 20552-2023: Pacific oyster
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 65:150
CCSB51
National Standards of People's Republic of China
Replace GB/T 20552-2006
long oyster
Published on 2023-12-28
2024-07-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Foreword
This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents"
Drafting:
This document replaces GB/T 20552-2006 "Pacific Oyster": Compared with GB/T 20552-2006, except for structural adjustment and editorial
In addition to the modifications, the main technical changes are as follows:
a) The classification status has been changed (see 4:2, 3:2 of the:2006 version);
b) Changed the quantifiable trait ratio (see 5:2, 4:1:2:1 of the:2006 version);
c) The relationship expressions between shell height and shell length, shell length and body weight have been deleted (see 4:1:2:3 of the:2006 edition);
d) Deleted biochemical genetic characteristics and detection methods (see Chapter 7, 8:2 of the:2006 edition);
e) Added description of molecular genetic characteristics and detection methods (see Chapter 8, 9:5);
f) Added judgment rules (see Chapter 10):
Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:
This document is proposed by the Ministry of Agriculture and Rural Affairs of the People's Republic of China:
This document is under the jurisdiction of the National Fisheries Standardization Technical Committee (SAC/TC156):
This document was drafted by: Ocean University of China:
The main drafters of this document: Li Qi, Yu Ruihai, Li Haikun, Xu Chengxun, Liu Shikai, Kong Lingfeng, and Yu Hong:
The previous versions of this document and the documents it replaces are as follows:
---First released as GB 20552-2006 in:2006, and converted to the recommended national standard GB/T 20552-2006 in:2017;
---This is the first revision:
long oyster
1 Scope
The main morphological and structural characteristics, growth and reproduction characteristics, cytogenetic characteristics and molecular genetic characteristics were determined, and the corresponding detection methods were described:
The method provides the decision rules:
This document applies to the identification and testing of oyster germplasm:
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document:
GB/T 18654:2 Inspection of cultured fish germplasm Part 2: Sampling methods
GB/T 22213 Aquaculture Terminology
GB/T 32757 Shellfish karyotype analysis
3 Terms and definitions
The terms and definitions defined in GB/T 22213 and the following apply to this document:
3:1
shell height shelheight
The maximum distance from the top of the shell to the ventral edge of the shell:
3:2
shell length
The length of the widest part between the front and rear edges perpendicular to the shell height and parallel to the stranded wires of the two shells:
4 Scientific name and classification
4:1 Scientific name
4:2 Classification status
Mollusca, Bivalvia, Ostreida, Ostreidae, Cras-
sostrea):
5 Main morphological and structural characteristics
5:1 External form
The shell is elongated and thin: The left shell is fixed, deeply sunken, and has thick scales; the right shell is flatter, with ringed, corrugated scales, sparsely arranged, and no radial ribs:
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