• Catalogue PIGMA
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Triennial Mackerel Egg Surveys at the Shelf Edge - RV Cirolana

The abundance of ichthyoplankton in samples from dedicated plankton surveys by Cefas with positional and sample data. Surveys took place off the Western Coast of the UK and Ireland between 1986 and 2004.

Series of cruises undertaken to contribute to the estimation of the spawning stock biomass of the western mackerel and horse mackerel stocks by plankton survey. The triennial mackerel egg surveys were begun in 1977 to estimate the SSB of the western mackerel stock. Since 1986 the surveys have also been used to estimate the SSB of horse mackerel. Plankton sampling is undertaken to estimate the egg production and trawling is carried out to estimate the mean fecundity of the mature female fish.

Various designs of Gulf VII type samplers have been used with various apertures of nosecones and 270 micron nets. Samplers are now standardised to the 53cm version, fitted with 20cm aperture nosecones.

Analysis at Cefas involved separating all fish eggs and larvae from samples. Where possible all eggs were identified. Eggs lacking identifiable features were measured. Where >100 eggs were found, sub-sampling was undertaken. Eggs that were unmeasured were apportioned across the size distribution of measured eggs. All mackerel and horse mackerel eggs were staged.

Simple

Date (Revision)
2021-07-12
Identifier
f9e6c4ad-5351-4288-8cee-d765dd75f9ba
Credit
Centre for Environment, Fisheries and Aquaculture Science (UK)
Point of contact
  Cefas - Sophie Pitois
Thèmes Sextant
  • /Biological Environment/Species/Fish Species of Commercial Interest
GEMET - INSPIRE themes, version 1.0
  • Species distribution
Mission Atlantic - Resources
  • Data
Mission Atlantic - Case Studies
  • Atlantic Ocean
  • Celtic Seas
Mission Atlantic - BODC Parameters
  • /Biological oceanography/Fish
Mission Atlantic - Data type (DMP)
  • Biological data
Mission Atlantic - Work Package
  • WP6 Dynamics of ecosystem state and resources
Use limitation
CC0 (Creative Commons - Transfer into public domain)
Access constraints
Copyright
Use constraints
Copyright
Aggregate Datasetindentifier
96d5febc-df92-4c52-b087-c13ff86fa668
Association Type
Source
Spatial representation type
grid Grid
Metadata language
English
Character set
utf8 UTF8
Topic category
  • Oceans
N
S
E
W
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Unique resource identifier
EPSG:4326
Geometric object type
Point
Distribution format
  • ESRI Shapefile ( 1.0 )

OnLine resource
Triennial Mackerel Egg Surveys at the Shelf Edge - RV Cirolana 05/1986 ( WWW:LINK )
OnLine resource
Triennial Mackerel Egg Surveys at the Shelf Edge - RV Cirolana 05/1989 ( WWW:LINK )
OnLine resource
Triennial Mackerel Egg Surveys at the Shelf Edge - RV Cirolana 06/1992 ( WWW:LINK )
OnLine resource
Triennial Mackerel Egg Surveys at the Shelf Edge - RV Cirolana 4a/1995 ( WWW:LINK )
OnLine resource
Triennial Mackerel Egg Surveys at the Shelf Edge - RV Corystes 06/1998 ( WWW:LINK )
OnLine resource
Triennial Mackerel Egg Surveys at the Shelf Edge - RV Cirolana 04/2001 ( WWW:LINK )
OnLine resource
Triennial Mackerel Egg Surveys at the Shelf Edge - RV Corystes 01/2001 ( WWW:LINK )
OnLine resource
Triennial Mackerel Egg Surveys at the Shelf Edge - RV Endeavour 05/2004 ( WWW:LINK )
Hierarchy level
Dataset

Domain consistency

Conformance result

Date (Publication)
2010-12-08
Explanation
See the referenced specification
File identifier
f9e6c4ad-5351-4288-8cee-d765dd75f9ba XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2025-05-16T09:39:23.132323Z
Metadata standard name
ISO 19115-3 - SEXTANT
Metadata standard version
1.0
Point of contact
  Ifremer - Sextant
ZI Pointe du Diable , Plouzane , Brittany , 29280 , France
https://sextant.ifremer.fr/eng
 
 

Overviews

overview

Spatial extent

N
S
E
W
thumbnail


Keywords

GEMET - INSPIRE themes, version 1.0
Species distribution
Mission Atlantic - BODC Parameters
/Biological oceanography/Fish
Mission Atlantic - Case Studies
Atlantic Ocean Celtic Seas
Mission Atlantic - Data type (DMP)
Biological data
Mission Atlantic - Resources
Data
Mission Atlantic - Work Package
WP6 Dynamics of ecosystem state and resources
Thèmes Sextant
/Biological Environment/Species/Fish Species of Commercial Interest

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