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Metadata: Sea lice counts on wild sea trout
Abstract:
Data comprise sampling for wild sea trout from named sampling locations. The number of fish, individual fish fork length and the number and life cycle stage of any sea lice found are all recorded. Notes on temporal and spatial coverage Data are in a single sheet however there are minor differences in spatial coverage, data covering 1997 – 2009 and 2011 – 2024 include available data covering all mainland west coast and western isles fisheries trusts regions. Data from 2010 features only data from mainland west coast fisheries trust regions (which includes some inner islands). There was no data collection in 2020. Column headings “site” contains the sampling site name “region” contains information on the general region of Scotland within which the sample site is located. “date” contains the date that sampling point was undertaken “fish_id” contains a number to identify individual fish “length” contains the fork length in mm of the individual sea trout “copepodid_chalimus” contains the number of this life cycle stage of lice found on the individual fish “preadult_adult” contains the number of this life cycle stage of lice found on the individual fish “ovigerous_females” contains the number of this life cycle stage of lice found on the individual fish Acknowledgements This work was funded by Scottish government Marine Directorate, and managed by Marine Directorate and Fisheries Management Scotland. Sampling was carried out by employees of the district fisheries trusts with the help of volunteers as required.
Data holder:
Scottish Government (Marine Scotland)
Use constraints:
no limitations to public access
| Other details | ||
| Internal code | Internally assigned metadata identifier | 3972 |
| 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. | Sea lice counts on wild sea trout |
| 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. | Marine_Scotland_FishDAC_12394 |
| Resource Identifier | This is the code assigned by the data owner. | Marine_Scotland_FishDAC_12394 |
| 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 | 1997-04-07 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2019-07-31 |
| Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | 200.00 |
| Spatial resolution unit | This describes the unit of spatial resolution which for distance must be metres. | http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/uom/gmxUom.xml#m |
| 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'. | Not Planned |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | Data comprise sampling for wild sea trout from named sampling locations. The number of fish, individual fish fork length and the number and life cycle stage of any sea lice found are all recorded. Notes on temporal and spatial coverage Data are in a single sheet however there are minor differences in spatial coverage, data covering 1997 – 2009 and 2011 – 2024 include available data covering all mainland west coast and western isles fisheries trusts regions. Data from 2010 features only data from mainland west coast fisheries trust regions (which includes some inner islands). There was no data collection in 2020. Column headings “site” contains the sampling site name “region” contains information on the general region of Scotland within which the sample site is located. “date” contains the date that sampling point was undertaken “fish_id” contains a number to identify individual fish “length” contains the fork length in mm of the individual sea trout “copepodid_chalimus” contains the number of this life cycle stage of lice found on the individual fish “preadult_adult” contains the number of this life cycle stage of lice found on the individual fish “ovigerous_females” contains the number of this life cycle stage of lice found on the individual fish Acknowledgements This work was funded by Scottish government Marine Directorate, and managed by Marine Directorate and Fisheries Management Scotland. Sampling was carried out by employees of the district fisheries trusts with the help of volunteers as required. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Sampling was undertaken between April and September, annually between 1997 and 2014. Each sampling event aims to catch at least 30 fish of either post-smolt and/or finnock life stage. Once caught, fish are anaesthetised using neutral-buffered MS222 (100 mgl-1) with the water poured through a 100µm sieve to catch any lice detached during the anaesthetising process. Fork length (to the nearest mm) was recorded during this process. For counting of lice, fish are placed in water against a light background with the number of lice present on the fish and the life cycle stages of the lice recorded as one of the following three categories: Category 1: Early stages: attached copepodids and chalimus. Category 2: Mobile stages: pre-adults and adults including mature males and non-ovigerous females. Category 3: Gravid stages: ovigerous females. Further details on sweep netting method can be found at https://www.sfcc.co.uk/assets/files/SFCC%20Sweep%20Netting%20Protocol.pdf Column headings “site” contains the sampling site name "region" contains the wider region within which sampling sites are situated “date” contains the date that sampling point was undertaken “fish_id” contains a number to identify individual fish “length” contains the fork length in mm of the individual sea trout “licestage” contains the sea lice life cycle stage. Either "copepodidchalimus", "preadultadult" or "ovigerousfemales" In the column based resource, the following columns are included: “copepodid_chalimus” contains the number of this life cycle stage of lice found on the individual fish “preadult_adult” contains the number of this life cycle stage of lice found on the individual fish “ovigerous_females” contains the number of this life cycle stage of lice found on the individual fish In the row based resource, the following columns are included: "lice stage" describing the development stages detailed above “count” contains the number of sea lice of the specified class on the fish Acknowledgements This work was funded by Marine Scotland, and managed by Marine Scotland Science and Fisheries Management Scotland. Sampling was carried out by employees of the district fisheries trusts with the help of volunteers as required. |
| Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | Middlemas, S. J., Fryer, R. J., Tulett, D. and Armstrong, J. D. (2013) ‘Relationship between sea lice levels on sea trout and fish farm activity in western Scotland’, Fisheries Management and Ecology, 20(1), pp. 68–74. doi: 10.1111/fme.12010, Middlemas, S. J., Raffell, J. A., Hay, D. W., Hatton-Ellis, M. and Armstrong, J. D. (2010) ‘Temporal and spatial patterns of sea lice levels on sea trout in western Scotland in relation to fish farm production cycles’, Biology Letters, 6(4), pp. 548–551. doi: 10.1098/rsbl.2009.0872, Shephard, S., MacIntyre, C. and Gargan, P. (2016) ‘Aquaculture and environmental drivers of salmon lice infestation and body condition in sea trout’, Aquaculture Environment Interactions, 8, pp. 597–610. doi: 10.3354/AEI00201 |
| Related keywords | ||
| Keyword | 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 | Fish disease and parasites | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 58.91221 |
| East | The eastern-most limit of the data resource in decimal degrees | -4.255371 |
| South | The southern-most limit of the data resource in decimal degrees | 55.29997 |
| West | The western-most limit of the data resource in decimal degrees | -8.144531 |
| 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 | Scottish Government (Marine Scotland) | |
| Phone | +44 (0)300 244 4000 | |
| marinescotland@gov.scot | ||
| 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 | Scottish Government (Marine Scotland) | |
| Phone | +44 (0)300 244 4000 | |
| Delivery point | Mailpoint 11, Area 1B South, Victoria Quay | |
| Postal code | EH6 6QQ | |
| City | Edinburgh | |
| Country | United Kingdom | |
| marinescotland@gov.scot | ||
| 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 | Scottish Government (Marine Scotland) | |
| Phone | +44 (0)300 244 4000 | |
| Delivery point | Mailpoint 11, Area 1B South, Victoria Quay | |
| Postal code | EH6 6QQ | |
| City | Edinburgh | |
| Country | United Kingdom | |
| marinescotland@gov.scot | ||
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | Scottish Government (Marine Scotland) | |
| Phone | +44 (0)300 244 4000 | |
| Delivery point | Mailpoint 11, Area 1B South, Victoria Quay | |
| Postal code | EH6 6QQ | |
| City | Edinburgh | |
| Country | United Kingdom | |
| marinescotland@gov.scot | ||
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Fisheries Management Scotland | |
| Phone | +44 (0)131 221 6567 | |
| Delivery point | 11 Rutland Square | |
| Postal code | EH1 2AS | |
| City | Edinburgh | |
| Country | United Kingdom | |
| general@fms.scot | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://dx.doi.org/10.7489/12394-1 |
| Locator function | Code that describes the function of the resource. ISO function code chosen from ISO 19115-1 Codelist | DOI:https://dx.doi.org/10.7489/12394-1 |
| Dataset constraints | ||
| 20 Limitations on Public Access - Access constraints | otherRestrictions | |
| 20 Limitations on Public Access - Other constraints | This states any limitations on access to the data and uses free text. | no limitations to public access |
| 21 Conditions for Access and Use - Use limitation | This states any constraints on use of the data. Multiple conditions can be recorded for different parts of the data resource. If no conditions apply, then `No condtions apply` is recorded. This uses free text. | The following attribution statement must be used: Contains information from the Scottish Government (Marine Scotland) licensed under the Open Government Licence v3.0. |
| 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. | 2022-02-04 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-04-12 |
| Metadata date | The date when the content of this metadata record was last updated. | 2025-06-10 |
| Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN Discovery Metadata |
| Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | Version 2.3.7 |