FFS Walther Herwig III 394
Cruise summary report
|Ship name (ship code)||FFS Walther Herwig III (06NI)|
|Cruise period||2016-03-24 — 2016-04-16|
|Port of departure||Bremerhaven, Germany|
|Port of return||Bremerhaven, Germany|
|Objectives||The cruise is part of the international mackerel and horse mackerel egg survey. The main objective of the survey is to produce both an index and a direct estimate of the biomass of the north east Atlantic mackerel stock and an egg production index for the southern and western horse mackerel stocks by sampling of mackerel and horse mackerel eggs and parental animals. The survey provides fisheries independent data which are used for the assessment of the above mentioned stocks. Countries participating are: UK (Scotland), Ireland, the Netherlands, Germany, Spain, Portugal, Iceland, Faroe Islands.
In general the concentration of the spawned eggs is correlated with the number of parental fish having produced the eggs. For planktonic fishing a modified Gulf Sampler will be used (Nackthai). The parental animals are sampled by trawl gear for fecundity estimates.
|Chief scientist||Jens Ulleweit (Thünen Institute of Sea Fisheries, Hamburg)|
|Project||International Mackerel and Horse Mackerel Egg Survey|
|Coordinating body||International Council for the Exploration of the Sea (ICES)|
|Cruise report||(2.30 MB)|
North East Atlantic Ocean (limit 40W)
|Specific||South and west of Ireland|