Thayer, Brian D.

English

Aquatic Commons

State o f  California - The Resources Agency 
Department of Fish and Game 
Marine Resources Region 
Long Beach, Cal i fornia 
CRUISE REPORT 72-KB-15 
BIG GAME FISHERIES Ir4VESTIGATIONS 
Prepared by Brian D. Thayer 
Vessel: "KELP BASS" 
Dates: July 10-14, 1972 
Locality : Santa Catalina and San Clemente Islands. 
Purpose: 1. To tag and release Pacific bonito, Sarda chi t iens is  
and white seabass, Cynoscion nobit is .  
2. To collect white seabass for fecundity, length- 
weight and sub-population studies and California 
barracuda, Sphyraena mgentea for length frequency 
analysis. 
3. To tag and release any Pacific mackerel, Scomber 
japonieus and jack mackerel, Traehurus symmetricus 
taken. 
4. To make incidental collections as requested by other 
C projects. 
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Equipment: Bait tank, dip nets, gill nets, nightlight, rods, reels, 
trolling poles, lines and lures. 
Procedure: Trolling and still fishing were conducted during daylight 
hours around San Clemente and Santa Catalina Islands. Gill 
nets were set at dusk in selected areas and retrieved at 
dawn the following day. A total of 15 gill net sets was 
made during the cruise, 13 of these in water 6-10 fathoms 
deep around Santa Catalina Island. Still fishing was also 
conducted under nightlights. 
Results: Three white seabass ranging in size from 761 mm to 1271 mm 
(TL), were taken in gill net sets around Santa Catalina Island. 
All were females and the ovaries were preserved for fecundity 
and maturity studies. One yellowtail was taken at San 
Clemente Island. No barracuda or bonito were taken during 
the cruise. 
A total of 14 jack mackerel was tagged and released at 
Wilson's Cove, San Clemente Island and 53 more were 
tagged and released at Catalina Harbor, Santa Catalina Island. 
Approximately 20 sardines were taken in Catalina H;iIbor. 
Personnel: Marco Mazarovich, Vessel Captain Cynthia Klepadlo, Seasonal Aid 
Brian Thayer, Biologist-in-Charge Darlene Osborne, Seasonal Aid 
Donald Schultze, Biologist 
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Cruise Report 72-KB-15: Big game fisheries investigations

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Cruise Report 72-KB-15: Big game fisheries investigations

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