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
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/
dataset
http://data.cefas.co.uk/#/View/20141/
function: order
CEFAS2d3352dd-a679-48cb-82ba-50a38bf6740a
http://www.cefas.co.uk/
eng
OGP
urn:ogc:def:crs:EPSG::4030
revision
2011-03-25
publication
2008-06-01
1.73881
1.74086
52.4595
52.4581
revision
2010-05-18
2015-03-31T23:00:00.000Z
2020-03-30T23:00:00.000Z
publication
2020-01-17
notPlanned
**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>
Public data (Crown Copyright) - Open Government Licence Terms and Conditions apply
Public data (Crown Copyright) - Open Government Licence Terms and Conditions apply
Data Manager
Centre for Environment, Fisheries & Aquaculture Science
Cefas Lowestoft Laboratory
Pakefield Road
Lowestoft
NR33 0HT
UK
+44 (0)1502 562244
originator
Data Manager
Centre for Environment, Fisheries & Aquaculture Science
Cefas Lowestoft Laboratory
Pakefield Road
Lowestoft
NR33 0HT
UK
+44 (0)1502 562244
custodian
Data Manager
Centre for Environment, Fisheries & Aquaculture Science
Cefas Lowestoft Laboratory
Pakefield Road
Lowestoft
NR33 0HT
UK
+44 (0)1502 562244
pointOfContact
2020-01-17T10:11:19