Identification

Title

2015 - 2020 Centre for Environment, Fisheries & Aquaculture Science (Cefas) Expert consultation and Epidemiological study results for fish parasites Ceratothoa oestroides, Enteromixum leei and Sparicotyle chrysophrii

Abstract

This dataset comprises the results of an expert consultation and epidemiological study conducted by Cefas and partners, as part of the Parafish Control project. The data were collected in order to produce a farm level modelling tool which fish farmers can use to assess the potential economic impact of parasites *Ceratothoa oestroides* , *Enteromixum leei* and *Sparicotyle chrysophrii * at the farm level. The relative risk posed to a potential or existing site based on characteristics such as the number of supplying hatcheries, and number of farms operating in the area. Site management practices such as frequency of mortality removal, use of fallowing, and frequency of net changes are also considered, and farmers are offered the chance to consider the cost associated with changing their practices to a lower risk option. The underlying data used in the model calculations are yet to be published (as of 12/11/2019). They are derived from two connected studies which are described briefly below. The first of these was an expert consultation. Various risk factors associated with the introduction and proliferation of these parasites at aquaculture sites were identified and an online questionnaire exploring their impacts in relation to these risk factors was completed independently by a group of experts (veterinarians, officials etc.). A Delphi style consultation meeting was then held, where the questionnaire results were presented by a moderator and discussed by the experts, and agreement reached on numerical values. The second study collected information from 39 mediterranean cage farms. The information collected covered the same range of risk factors as the previous study (farm location, size, environment, management and husbandry practices) together with information on their experience with the parasites (presence, associated mortalities and growth retardation, parasite monitoring and treatment). The .csv files contain a subset of all the data collected which are relevant to the economic model, the factors having been determined based on statistical significance and practical relevance. The full datasets from the two studies are not available at present. The data and associated reports are Confidential within the Parafish project but are being developed into peer-reviewed manuscripts. Links will be provided when these are published. The economic model can be found `here`_ . .. _`here`: https://openscience.cefas.co.uk/parafish_economic/

Resource type

dataset

Resource locator

http://data.cefas.co.uk/#/View/20141/

function: order

Unique resource identifier

code

CEFAS2d3352dd-a679-48cb-82ba-50a38bf6740a

codeSpace

http://www.cefas.co.uk/

Dataset language

eng

Spatial reference system

authority code

OGP

code identifying the spatial reference system

urn:ogc:def:crs:EPSG::4030

Classification of spatial data and services

Topic category

Keywords

Keyword set

keyword value

Keyword set

keyword value

originating controlled vocabulary

title

SeaDataNet P021 parameter discovery vocabulary

reference date

date type

revision

effective date

2011-03-25

Keyword set

keyword value

originating controlled vocabulary

title

GEMET, version 1.0

reference date

date type

publication

effective date

2008-06-01

Geographic location

West bounding longitude

1.73881

East bounding longitude

1.74086

North bounding latitude

52.4595

South bounding latitude

52.4581

Extent

Extent group

authority code

title

SeaVoX Vertical Co-ordinate Coverages

reference date

date type

revision

effective date

2010-05-18

code identifying the extent

Temporal reference

Temporal extent

Begin position

2015-03-31T23:00:00.000Z

End position

2020-03-30T23:00:00.000Z

Dataset reference date

date type

publication

effective date

2020-01-17

Frequency of update

notPlanned

Quality and validity

Lineage

**Expert consultation ** There were two stages to the expert consultation. Firstly, selected experts were asked to independently complete an online questionnaire for each parasite they had significant experience with. The number of completed questionnaires for each parasite ranged from 10 to 18. The questionnaires asked for quantitative estimates <span style="background-color: #ffffff;">...</span> <span style="background-color: #ffffff;">...</span> For most parameter estimates obtained there was good agreement on the median value by the experts, although in some cases the range was quite large. Regional differences in things such as temperature, sea conditions, culture methods and the availability of treatment were responsible for this in many cases, but in other cases large ranges simply reflected uncertainty. Whilst all of the experts were highly experienced with these parasites (some had worked in this field for over 20 years) it must be noted that the results are best estimates and may not be correct. **Epidemiological study** This study collected (in a questionnaire type format) detailed information on 39 cage farms. This included farm location, size, depth, sea conditions, proximity of other farms, fish supply, husbandry practices, hygiene and management practices, parasite monitoring and treatments used. It also captured information on the presence, severity of infection, and losses experienced through infection with these parasites. This allowed a statistical analysis to be carried out to identify the strength of associations between the various risk factors and the presence and severity of the parasitic infections. Some farms were unwilling or unable to answer some of the questions. The majority of risk factors did not have a statistically significant influence on the presence and severity of infection, but the general pattern of findings was similar to that of the expert consultation, and some strong effects were detected. A larger sample size would have improved the outcome. The Eastern Mediterranean was under-represented in the sample as a high number of farms from this region could not complete the study for various reasons. This meant that only 7 of the 39 sites had experience with *Ceratothoa oestroides* so few conclusions could be reached for this parasite. <span style="display: inline !important; float: none; background-color: #ffffff; color: #555555; font-family: 'Open Sans',sans-serif; font-size: 14px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">...</span> <span style="display: inline !important; float: none; background-color: #ffffff; color: #555555; font-family: 'Open Sans',sans-serif; font-size: 14px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">...</span> <span style="display: inline !important; float: none; background-color: #ffffff; color: #555555; font-family: 'Open Sans',sans-serif; font-size: 14px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">...</span> <span style="display: inline !important; float: none; background-color: #ffffff; color: #555555; font-family: 'Open Sans',sans-serif; font-size: 14px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">...</span> <span style="display: inline !important; float: none; background-color: #ffffff; color: #555555; font-family: 'Open Sans',sans-serif; font-size: 14px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">...</span> <span style="display: inline !important; float: none; background-color: #ffffff; color: #555555; font-family: 'Open Sans',sans-serif; font-size: 14px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">...</span> <span style="display: inline !important; float: none; background-color: #ffffff; color: #555555; font-family: 'Open Sans',sans-serif; font-size: 14px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">...</span> <span style="display: inline !important; float: none; background-color: #ffffff; color: #555555; font-family: 'Open Sans',sans-serif; font-size: 14px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">...</span> <span style="display: inline !important; float: none; background-color: #ffffff; color: #555555; font-family: 'Open Sans',sans-serif; font-size: 14px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">...</span> <span style="display: inline !important; float: none; background-color: #ffffff; color: #555555; font-family: 'Open Sans',sans-serif; font-size: 14px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">...</span> <span style="display: inline !important; float: none; background-color: #ffffff; color: #555555; font-family: 'Open Sans',sans-serif; font-size: 14px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;">...</span>

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Public data (Crown Copyright) - Open Government Licence Terms and Conditions apply

Constraint set

Limitations on public access

Public data (Crown Copyright) - Open Government Licence Terms and Conditions apply

Responsible organisations

Responsible party

contact position

Data Manager

organisation name

Centre for Environment, Fisheries & Aquaculture Science

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

telephone number

+44 (0)1502 562244

email address

data.manager@cefas.co.uk

responsible party role

originator

Responsible party

contact position

Data Manager

organisation name

Centre for Environment, Fisheries & Aquaculture Science

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

telephone number

+44 (0)1502 562244

email address

data.manager@cefas.co.uk

responsible party role

custodian

Metadata on metadata

Metadata point of contact

contact position

Data Manager

organisation name

Centre for Environment, Fisheries & Aquaculture Science

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

telephone number

+44 (0)1502 562244

email address

data.manager@cefas.co.uk

responsible party role

pointOfContact

Metadata date

2020-01-17T10:11:19

Metadata language

eng