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Metadata: Gonadosomatic Index of individual Ballan Wrasse caught from Weymouth Bay 2018 to 2019
Abstract:
Gonadosomatic Index (GSI) data was gathered as part of work looking into breeding season of Ballan wrasse. Fish samples were obtained from March 2018 to May 2019. Samples were obtained via local fishers using pots, traps and rod and line and subsequently processed back at the lab. Both fish weight (WT to nearest g) and gonad weight (WG, to 0.1g) were obtained in order to ascertain the GSI. The data set comprises of female fish from the Weymouth bay area from March 2018 to May 2019. The minimum GSI observed was 0.039GSI and Maximum observed 8.904GSI. The data shows the GSI in relation to the time of year the fish were captured.
Data holder:
Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)
| Other details | ||
| Internal code | Internally assigned metadata identifier | 10169 |
| Title | The title is used to provide a brief and precise description of the dataset such as 'Date', 'Originating organisation/programme', 'Location' and 'Type of survey'. All acronyms and abbreviations should be reproduced in full. | Gonadosomatic Index of individual Ballan Wrasse caught from Weymouth Bay 2018 to 2019 |
| File Identifier | The File Identifier is a code, preferably a GUID, that is globally unique and remains with the same metadata record even if the record is edited or transferred between portals or tools. | CEFAS8c339bd8-cb8c-4d3d-8c91-b8c258e9ef53 |
| Resource Identifier | This is the code assigned by the data owner. | CEFAS22114 |
| Resource type | The resource type will likely be a dataset but could also be a series (collection of datasets with a common specification) or a service. | dataset |
| Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 2018-01-01 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2019-12-30 |
| Frequency of updates | This describes the frequency with which the resource is modified or updated i.e. a monitoring programme that samples once per year has a frequency that is described as 'annually'. | notPlanned |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | Gonadosomatic Index (GSI) data was gathered as part of work looking into breeding season of Ballan wrasse. Fish samples were obtained from March 2018 to May 2019. Samples were obtained via local fishers using pots, traps and rod and line and subsequently processed back at the lab. Both fish weight (WT to nearest g) and gonad weight (WG, to 0.1g) were obtained in order to ascertain the GSI. The data set comprises of female fish from the Weymouth bay area from March 2018 to May 2019. The minimum GSI observed was 0.039GSI and Maximum observed 8.904GSI. The data shows the GSI in relation to the time of year the fish were captured. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | 175 Ballan wrasse were provided in 20 batches between March 2018 and May 2019 by inshore fishers. The fish were captured from Weymouth Bay on the south coast of the UK (ICES area VIIE 30E7). During the month of November through to July the wrasse were by-catch from lobster/crab pots and static nets. For the rest of the year (July to October), the fish were caught as a targeted species using fish traps and rod-and-line. This is in keeping with the seasonal fishing methods and reflects the only opportunity to obtain fish. The fish were measured for total length (LT to nearest 0.5 cm) and total body weight (WT to nearest g). The body cavity was opened for sex determination. The ovaries of ballan wrasse are above the gut and arranged as a paired elongated lobular structure. Testes are often firmer, milky white or pink in colour. The gonads were removed and weighed (WG, to 0.1 g) for calculation of the gonadosomatic index (GSI). GSI= (WG / WT) *100 |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish reproduction |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Age | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Aquaculture | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Conservation | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fisheries | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Agricultural and aquaculture facilities | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Unknown | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | data.gov.uk | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 50.75 |
| East | The eastern-most limit of the data resource in decimal degrees | -2 |
| South | The southern-most limit of the data resource in decimal degrees | 50.5 |
| West | The western-most limit of the data resource in decimal degrees | -2.5 |
| Responsible organisations | ||
| Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
| Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
| Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
| Postal code | NR33 0HT | |
| City | Lowestoft | |
| Administrative area | Suffolk | |
| Country | UK | |
| data.manager@cefas.co.uk | ||
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
| Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
| Postal code | NR33 0HT | |
| City | Lowestoft | |
| Administrative area | Suffolk | |
| Country | UK | |
| data.manager@cefas.co.uk | ||
| Role | The custodian is the person or organisation that accepts responsibility for the resource and ensures appropriate care and maintenance. If a dataset has been lodged with a Data Archive Centre for maintenance then this organisation is be entered here. | custodian |
| Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
| Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
| Postal code | NR33 0HT | |
| City | Lowestoft | |
| Administrative area | Suffolk | |
| Country | UK | |
| data.manager@cefas.co.uk | ||
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
| Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
| Postal code | NR33 0HT | |
| City | Lowestoft | |
| Administrative area | Suffolk | |
| Country | UK | |
| data.manager@cefas.co.uk | ||
| Role | The owner is the person or organisation that owns the resource. | owner |
| Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
| data.manager@cefas.co.uk | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://data.cefas.co.uk/view/22114 |
| Locator name | Name of the web resource | Cefas Data Portal |
| Dataset constraints | ||
| 20.1 Limitations on Public Access - Access constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 20.2 Limitations on Public Access - Other constraints | noLimitations | |
| 21.1 Conditions for Access and Use - Use constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 21.2 Conditions for Access and Use - Other constraints | https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ | |
| Version info | ||
| Date of publication | The publication date of the resource or if previously unpublished the date that the resource was made publicly available via the MEDIN network. | 2025-01-29 |
| Date of last revision | The most recent date that the resource was revised. | 2025-04-11 |
| Date of creation | The date that the resource was created. | 2025-01-29 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-04-19 |
| Metadata date | The date when the content of this metadata record was last updated. | 2025-04-11 |
| Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN |
| Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | 3.1.1 |