FRV Clupea 1003C_2
Cruise summary report
|Ship name (ship code)||FRV Clupea (74CU)|
|Cruise period||2003-06-18 — 2003-06-23|
|Port of departure||Montrose, United Kingdom|
|Port of return||Fraserburgh, United Kingdom|
|Objectives||1. To investigate variation in sandeel population age structure at different locations on the Wee Bankie and Marr Bank from samples collected using the Sandeel dredge.
2. To carry out a demersal trawl survey to determine the abundance and distribution of whiting, haddock and cod, the main fish predators of sandeels. At each trawl station the length frequency of all fish species caught will be determined. Sub-samples of the three gadoids will be weighed to determine length-weight relationships. Otoliths will be taken to determine age composition. Stomach samples will be collected to establish diet and food consumption rates, and livers and gonads will be removed to determine Hepato- and Gonado- Somatic Indices. (Any sandeels and clupeid fish caught during the demersal trawling will be worked up to determine length frequency distributions, length-weight relationships and age composition). Muscle tissue samples will also be collected for fatty acid and nitrogen isotope ratio analysis.
|Chief scientist||Michael R Robertson (Fisheries Research Services Aberdeen Marine Laboratory)|
|Cruise report||(0.25 MB)|
|Specific||Wee Bankie/Marr Bank Firth of Forth|
|Track charts||(0.12 MB)|
|Biology and fisheries|
|Demersal fish||Quantity: number of hauls = 19|
Description: Demersal fish were sampled in the Firth of Forth