FRV Clupea 1704C

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Clupea (74CU)
Cruise identifier1704C
Cruise period2004-11-17 — 2004-12-01
Port of departureFraserburgh, United Kingdom
Port of returnFraserburgh, United Kingdom
Objectives1. To carry out detailed acoustic surveys in selected lochs, the Sound of Sleat and North Minch (if time allows) using the EK 500 to determine the distribution and abundance of herring and sprat. Concentrations of pelagic fish will be sampled using the PT154. Species composition and length-frequency distributions of the fish caught will be determined. Sub-samples will be weighed and otolithed to establish length-weight relationships. Herring samples will be analysed for sex, maturity and Ichthyophonus infection. Stomach, gonad and DNA samples will also be taken, as part of the EU project WESTHER. Sprat samples will be analysed for Lernaeenicus sprattae and Cryptocotyle lingua infection.
2. A line of CTDs will be carried out through each loch.
Chief scientistEmma Hatfield (Fisheries Research Services Aberdeen Marine Laboratory)
Cruise programmeFRV Clupea 1704C cruise programme 1704c.pdf  (0.02 MB) 
Cruise reportFRV Clupea 1704C cruise report 1704c.pdf (0.05 MB) 
Ocean/sea areas 
GeneralInner Seas off the West Coast of Scotland
SpecificLoch Carron, Loch Duich, Loch Hourn, Loch Nevis, Sound of Sleat, North Minch
Physical oceanography 
CTD stationsQuantity: number of profiles = 21
Description: SEABIRD 911plus
Biology and fisheries 
Pelagic fishQuantity: number of hauls = 13
Geology and geophysics 
Single-beam echosounding