Haugen, Charles

English

Aquatic Commons

State of California - The Resources Agency
Department of Fish and Game
Marine Resources Region
. Long Beach, California
CRUISE REPORT 74-KB-32 - LOBSTER
Prepared by Charles Haugen
Vessel: R/V KELP BASS
Dates: ~ December 11-13, 1974
Locality: Santa Catalina Island
Purpose: 1. To collect California spiny lobster, PanuZirus interruptus,
for life history studies.
2. To evaluate escape ports in commercial traps.
Procedure: Lobsters were trapped in rocky bottom. habitat near Ist11ffitlS
Cove using commercial traps wi.th 5.1 x 10.2-cm (2 x 4-inch)
mesh, and 2.5 x 2.5-cm (1 x I-inch) and 2.5 x 5.1-cm (1 x
2-inch) mesh traps. Thirteen of 34 commercial traps were
fitted with experimelltal escap'e ports and 10 small mesh
traps were used. All lobsters caught were measured, sexed,
and released.
Results: ~]o nights of trapping, totaling 88 trap pulls, caught 175
lobsters of which 69 (39.4%) were legal size. Felnales com-
prised 30.9% (54) of the catch; none carried eggs.
Recaptures of marked lobsters accounted for 32% (56) of
the catch. Forty-three had been recaptured on previous
cruises; 13 were recaptured for the first time~
Commercial traps without escape ports caught 39 legal lob-
sters and 52 shorts. Those with escape ports caught 18
legals and 3 shorts. Small mesh traps took 12 legals and
51 shorts. Catch per haul rates were:
Commercial traps without escape ports:
Commercial traps with escape ports:
Small mesh traps:
Personnel: M. Mazarovich, Vessel Captain
C. llaugen, Biologist-in-charge, DFG
P. Lehtonen, Biologist~ DFG
J. Engle~ Biologist, USC
ORB/LB! 150
1-8-75/pb
legal ~ 0.93
sllort 1 .24
legal -- o. 69
short - 0-..12
legal - 0.60
short - 2.56


Cruise Report 74-KB-32: Lobster

http://aquaticcommons.org/844/1/74-KB-32.pdf

Cruise Report 74-KB-32: Lobster

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