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GB/T 21442-2024: Zhikong scallop
Status: Valid GB/T 21442: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 21442-2024 | English | 209 |
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3 days [Need to translate]
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Zhikong scallop
| Valid |
GB/T 21442-2024
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| GB/T 21442-2008 | English | 189 |
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3 days [Need to translate]
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Farrer scallop
| Valid |
GB/T 21442-2008
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PDF similar to GB/T 21442-2024
Basic data | Standard ID | GB/T 21442-2024 (GB/T21442-2024) | | Description (Translated English) | Zhikong scallop | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B51 | | Classification of International Standard | 65.150 | | Word Count Estimation | 10,138 | | Date of Issue | 2024-09-29 | | Date of Implementation | 2025-04-01 | | Older Standard (superseded by this standard) | GB/T 21442-2008 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 21442-2024: Zhikong scallop---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.
Zhikong scallop
Chlamys farreri
ICS 65.150
CCS B 51
National Standard of the People's Republic of China
Replace GB/T 21442-2008
Released on 2024-09-29
2025-04-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting is required.
This document replaces GB/T 21442-2008 Chlamys farreri. Compared with GB/T 21442-2008, except for structural adjustments and editorial changes,
In addition to the modifications, the main technical changes are as follows.
The content on karyotype has been deleted (see 5.2 of the.2008 edition); a)
The biochemical genetic characteristics have been deleted (see Chapter 6 of the.2008 edition); b)
The isozyme analysis method was deleted (see 7.2 of the.2008 edition); c)
Added molecular genetic characteristics and corresponding detection methods (see Chapter 8, Appendix A); d)
The judgment rules have been changed (see Chapter 10, Chapter 8 of the.2008 edition); e)
The formula for isoenzyme staining solution has been deleted (see Appendix A of the.2008 edition). f)
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was 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 Technical Committee on Aquatic Products Standardization (SAC/TC 156).
This document was drafted by. Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Ocean University of China, Weihai Changqing Marine Technology Co., Ltd.
Company, Institute of Oceanology, Chinese Academy of Sciences.
The main drafters of this document are. Wang Wenjun, Lu Xiaoping, Hu Xiaoli, Chang Lirong, Zhang Yan, Yao Yanyan, Liang Zhourui, Yin Xiaoshen, Zhang Hui,
Lu Longfei, Wang Huizhen, Yang Xiaobin, Ma Shuang.
The previous versions of this document and the documents it replaces are as follows.
First published in.2008 as GB/T 21442-2008; -
This is the first revision. -
Chlamys farreri
1 Scope
This document specifies the species of Chlamys farreri (Jones
characteristics, growth and reproduction characteristics, cytogenetic characteristics and molecular genetic characteristics, describes the corresponding detection methods, and stipulates the determination
rule.
This document applies to the detection and identification of Chlamys farreri germplasm.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies.
in this document.
GB/T 18654.6 Germplasm inspection of farmed fish Part 6.Determination of reproductive performance
GB/T 18654.12 Germplasm inspection of farmed fish Part 12.Chromosome karyotype analysis
GB/T 22213 Aquaculture Terminology
GB/T 32757 Analysis of chromosome karyotypes in shellfish
3 Terms and definitions
The terms and definitions defined in GB/T 22213 apply to this document.
4 Scientific name and classification
4.1 Scientific name
Chlamys farreri (Jones
4.2 Classification status
Phylum Mollusa, Class Lamellibranchia, Order Pterioida, Family Pectinid﹘
ae), Chlamys farreri.
5 Main morphological and structural characteristics
5.1 External appearance
Double shell, fan-shaped, the left and right shells are almost equal in size, but the right shell is slightly flat, the left shell is slightly convex, and the ventral edge is nearly round; the top of the shell is located on the back.
The edge is slightly convex; the top of the shell protrudes a larger front ear forward and a smaller rear ear backward, both of which are triangular in shape, and the shapes of the left and right ears are different.
The ventral surface of the front ear of the right shell is concave backwards, forming a pecten hole that communicates with the outside world when the left and right shells are closed. The ventral edge of the hole on the upper end of the right shell has a small
The outer surface of the shell is mostly purple-brown or light brown, with some yellow-brown, apricot-red, and gray-white; the inner surface of the shell is white, brown, or pink.
The number and shape of the radial ribs on the two shells are different. The appearance of the Chlamys farreri is shown in Figure 1.
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