CEFAS8c339bd8-cb8c-4d3d-8c91-b8c258e9ef53 English dataset Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk pointOfContact 2025-04-11T12:59:29 EPSG Geodetic Parameter Registry 2022-01-07 revision WGS 84 Gonadosomatic Index of individual Ballan Wrasse caught from Weymouth Bay 2018 to 2019 2025-01-29 publication 2025-04-11 revision 2025-01-29 creation CEFAS22114 https://data.cefas.co.uk 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. Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk originator Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk custodian Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk distributor Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) data.manager@cefas.co.uk owner notPlanned Fish reproduction SeaDataNet P02 parameter discovery vocabulary 2011-03-25 revision Age Aquaculture Conservation GEMET, version 1.0 2008-06-01 publication Fish Fisheries SeaDataNet P03 parameter discovery vocabulary 2011-03-25 revision Agricultural and aquaculture facilities GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Unknown SeaVoX Vertical Co-ordinate Coverages 2010-05-18 revision Marine Environmental Data and Information Network MEDIN metadata record availability 2012-01-11 publication data.gov.uk MEDIN metadata record availability 2012-01-11 publication otherRestrictions noLimitations otherRestrictions Publicly available data licensed under the Open Government Licence v3.0 ( `https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/`_ ) – Please note the applicable attribution statement is as follows: ‘includes Crown copyright, Cefas 2024' .. _`https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/`: https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ English farming -2.50 -2.00 50.50 50.75 2018-01-01 2019-12-30 Delimited Unknown https://data.cefas.co.uk/view/22114 Cefas Data Portal download The Cefas Data Portal contains metadata records and data sets available to download and connect to in support of our commitment to open science. Data is available in the following formats: CSV. dataset INSPIRE Data Specification on Agricultural and Aquaculture Facilities – Technical Guidelines 2013-12-10 publication false See the referenced specification Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 publication true See the referenced specification 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 MEDIN 3.1.1