FRV Clupea 0389C
Cruise summary report
|Ship name (ship code)||FRV Clupea (74CU)|
|Cruise period||1989-03-13 — 1989-03-28|
|Port of departure||Buckie, United Kingdom|
|Port of return||Troon, United Kingdom|
|Objectives||1. To collect samples of herring in spawning conditions at Ballantrae Bank in order to establish the meristic and age structure of the spawning stock and to obtain eggs for measurement purposes.
2. To obtain samples of ripe herring for egg fertilisation to provide material for oil pollution and other experiments.
3. To use the ROV "Sea-pup" to search Ballantrae Bank and other areas for presence of herring spawn.
4. To lay a current meter on the site of the herring egg patch discovered in 1988.
5. To enable the diving team to undertake a pre-spawning investigation of the gravel beds, and to set up some experiments on the gravel beds prior to spawning.
6. To undertake limited hydrographic work on Ballantrae Bank to establish temperature and salinity profiles during the period of the cruise.
7. To set up a time-lapse camera or a frame with a pan and tilt camera if herring shoals are observed on the echo sounder in an attempt to obtain film if spawning herring.
8. To use a "Day" grab to sample any areas of spawn that are observed during the cruise.
|Chief scientist||John A Morrison (Scottish Office Agriculture and Fisheries Department Aberdeen Marine Laboratory)|
|Cruise report||(0.15 MB)|
|General||Inner Seas off the West Coast of Scotland|
|Surface measurements underway (T,S)||Description: T only; whole cruise|
|Current meters||Quantity: number of stations = 1|
|Biology and fisheries|
|Eggs and larvae||Quantity: number of samples = 172|
Description: benthic eggs of pelagic spec.
|Demersal fish||Quantity: number of hauls = 1|
|Other biological/fisheries measurement||Description: observation by diver|
|Other biological/fisheries measurement||Description: observation by seapup rov|
|Geology and geophysics|
|Grab||Quantity: number of samples = 172|
|Moorings, landers, buoys|
|Current meters||55° 7' 59" N 5° 15' 59" W —|