Between October 1 and December 31, 1977, Departmental

personnel sampled catches during 166 trips aboard commercial

passenger fishing vessels operating in southern California.

A total of 27,468 fishes belonging to 101 species were

identified and measured. Otoliths for age determination

studies were removed from 263 rockfish carcasses representing 27 species. In addition, 37 long-range trips originating in San Diego and fishing in Mexican waters were sampled. A total of 7,204 fishes comprising 20 species was 

identified and measured at dockside from these vessels.

The 10 most commonly taken species during the quarter

accounted for 74.3% of the southern California catch. The

most frequently sampled species were chilipepper, Sebastes

goodei (16.1%); Pacific mackerel, Scomber japonicus (15.4%) ; bocaccio, Sebastes paucispinis (10.1%); kelp bass, Paralabrax clathratus (7.8%); halfmoon, Medialuna californiensis (5.7%); olive rockfish, Sebastes serranoides (5.4%); blue rockfish, S. mystinus (4.4%); greenspotted rockfish, S. chlorostictus (3.4%); vermilion rockfish, S. miniatus (3.2%); and Pacific bonito, Sarda chiliensis (2.7%). Data gathered from long-range trips showed the top 

five species accounted for 88.8% of the fish sampled. The most frequently sampled species were yellowtail, Seriola dorsalis (31.0%); yellowfin tuna, Thunnus albacares (23.7%); dolphinfish, Coryphaena hippurus (18.6%); wahoo, Acanthocybium solanderi (10.0%); and snowy grouper, Epinephelus niveatus (5.6%).  (67pp.

Crooke, Stephen J.

English

Between July 1 and September 30, 1977, Departmental

personnel sampled catches during 184 trips aboard 

commercial passenger fishing vessels operating in southern

California. A total of 28,617 fishes belonging to 89

species was identified and measured. Otoliths for age

determination studies were removed from 222 rockfish

carcasses representing 20 species.

The 10 most commonly sampled species during the

quarter accounted for 82.9% of the catch. The most frequently sampled fishes were kelp bass, Paralabrax

clathratus (18.9%); Pacific mackerel, Scomber japonicus

(17.6%); olive rockfish, Sebastes serranoides (15.5%);

blue rockfish, S. mystinus (8.7%); barred sand bass, P.

nebulifer (8.6%); California barracuda, Sphyraena

argentea (4.9%); sculpin, Scorpaena guttata (2.4%);

bocaccio, S. paucispinis (2.3%); white croaker, Genyonemus

lineatus (2.1%); and squarespot rockfish, S. hopkinsi (1.8%).

Partyboat activity continued to center on surface

fishing. (33pp.

Aquatic Commons

1. 
6 LIBRARY imding Marine Laboratorla 
p. 0. BOX 223 LIBR~v* 
b hss ~~p,ciina Call! 95n'C LMding Marins L a u ~ t  b ~ o r l e  
S t a t e  of California P. 0. Box 223 
The R e s o u r c e s  Agency Landing, Calif. 95039 
DEPARTMENT OF FISH AND GAME 
SOUTHERN CALIFORNIA PARTYBOAT SAMPLING STUDY 
QUARTERLY REPORT NO. 9 
S t e p h e n  J. Crooke 
MARINE RESOURCES 
6 A d m i n i s t r a t i v e  R e p o r t  No. 78-7 
June 1978 
SOUTHERN CALIFORNIA PARTYBOAT SAMPLING STUDY 
11 
QUARTERLY REPORT NO. 9- 
by 
2 / 
Stephen J. ~ r o o k e -  
ABSTRACT 
Between J u l y  1 and September 30, 1977, Departmental 
personnel  sampled ca t ches  dur ing  184 t r i p s  aboard comm- 
e r c i a l  passenger  f i s h i n g  v e s s e l s  ope ra t ing  i n  southern  
C a l i f o r n i a .  A t o t a l  of 28,617 f i s h e s  belonging t o  89 
s p e c i e s  was i d e n t i f i e d  and measured. O t o l i t h s  f o r  age 
de termina t ion  s t u d i e s  were removed from 222 r o c k f i s h  
ca rcas ses  r e p r e s e n t i n g  20 s p e c i e s .  
The 10  most commonly sampled s p e c i e s  dur ing  t h e  
q u a r t e r  accounted f o r  82.9% of t h e  ca tch .  The most f r e -  
quent ly  sampled f i s h e s  w e r e  k e l p  bas s ,  ParaZabrax 
cZathratus (18.9%) ; P a c i f i c  mackerel,  Scomber japonicus 
(17.6%); o l i v e  r o c k f i s h ,  Sebastes serranoides (15.5%);  
b l u e  r o c k f i s h ,  S. mystinus (8.7%) ; ba r red  sand bas s ,  P. 
nebuZifer (8.6%); C a l i f o r n i a  bar racuda ,  Sphyraena 
argentea (4.9%) ; s c u l p i n ,  Scorpaena guttata (2.4%) ; 
bocaccio,  S. paucispinis (2.3%);  whi te  c roaker ,  Genyonemus 
Zineatus (2.1%) ; and squarespot  r o c k f i s h ,  S. hopkinsi (1.8%). 
Par tyboat  a c t i v i t y  cont inued t o  c e n t e r  on s u r f a c e  
f i s h i n g .  
11 
- 
Marine Resources Adminis t ra t ive  Report No. 78-7, June 
1978. Th i s  s tudy  is  be ing  performed a s  p a r t  of Dingel l -  
Johnson P r o j e c t  C a l i f o r n i a  F-32-R, "Southern C a l i f o r n i a  
Marine S p o r t f i s h  Research" supported by Federa l  a i d  t o  
F i sh  Res to ra t ion  Funds. F i e l d  work was conducted i n  
coopera t ion  wi th  t h e  Department of Commerce, Nat iona l  
Oceanic and Atmospheric Adminis t ra t ion ,  Nat iona l  Marine 
F i s h e r i e s  Se rv i ces ,  under a c o n t r a c t  e n t i t l e d  Stock 
Assessment, F ishery  Eva lua t ion ,  and Fishery  Management 
of Southern C a l i f o r n i a  Rec rea t iona l  and Commercial 
F i s h e r i e s ,  P r o j e c t  863. 
2 / 
-
Opera t ions  Research Branch, C a l i f o r n i a  S t a t e  F i s h e r i e s  
Laboratory,  350 Golden Shore, Long Beach, C a l i f o r n i a  90802. 
SOUTHERN CALIFORNIA PARTYBOAT SAMPLING STUDY 
QUARTERLY REPORT NO. 9 
WTRODUCT ION 
Between J u l y  1 and September 30, 1977, Departmental personnel  
sampled ca t ches  dur ing  184 t r i p s  aboard commercial passenger  f i s h i n g  
v e s s e l s  o p e r a t i n g  i n  southern  C a l i f o r n i a .  A t o t a l  of 28,617 f i s h e s  
belonging t o  89 s p e c i e s  was i d e n t i f i e d  and measured./ O t o l i t h s  f o r  
age de termina t ion  s t u d i e s  were removed from 222 r o c k f i s h  ca rcas ses  re- 
p re sen t ing  20 spec i e s .  
The 10  most commonly samples s p e c i e s  dur ing  t h e  q u a r t e r  accounted 
f o r  82.9% of t h e  ca t ch  (Table 1 ) .  The most f r e q u e n t l y  sampled f i s h e s  
were k e l p  b a s s ,  ParaZabrax cZathratus (18.9%) ; P a c i f i c  mackerel,  
Scomber japonims (17.6%) ; o l i v e  r o c k f i s h  , Sebastes serranoides (15.5%) ; 
b lue  r o c k f i s h ,  S. mystinus (8.7%) ; b a r r e d  sand b a s s ,  P. nebulifer 
(8.6%); C a l i f o r n i a  barracuda Sphyraena argentea (4.9%); s c u l p i n ,  
Scorpaena guttata (2.4%); bocaccio,  S.  puttcispinis (2.3%);  wh i t e  
c roaker ,  Genyonemus Zineatus (2.1%); and squarespot  r o c k f i s h ,  S. hopkinsi 
(1.8%). 
OPERATIONS 
During t h e  q u a r t e r  t h e  procedure f o r  s e l e c t i n g  v e s s e l s  t o  sample 
was modified. The previous method of  sampling i n  p ropor t ion  t o  t h e  
number of t r i p s  run dur ing  t h e  preceding  season was rep laced  by one i n  
which samples were s e l e c t e d  i n  p ropor t ion  t o  scheduled t r i p s  f o r  t h e  
31 
- 
For d e f i n i t i o n  of l eng th  measurements s e e  Maxwell and Schu l t ze ,  
Adminis t ra t ive  Report 76-3. 
month. Selec t ion of samples w a s  a l s o  extended t o  inc lude afternoon and 
t w i l i g h t  half-day t r i p s  a s  w e l l  a s  all-day t r i p s  on boats  opera t ing 
offshore.  Each open-party boat  was sampled each month i n  proport ion t o  
t h e  number of t r i p s  it  made during t h e  day. This meant t h a t  an all-day 
boat  would be sampled once during t h e  month s i n c e  i t  only makes one 
t r i p  a day while a half-day boat  would be sampled t h r e e  t i m e s  i f  i t  made 
t h r e e  t r i p s  (morning, afternoon,  t w i l i g h t )  per  day. 
Partyboat  a c t i v i t y  continued t o  center  on surface  f i shing.  
ROCKFISHES 
During the  quar te r ,  10,464 rockf ish  represent ing 32 species  were 
i d e n t i f i e d .  This group accounted f o r  36.6% of t h e  sampled ca tch  a s  
compared t o  39.2% l a s t  quar te r  and 37.4% from t h e  same quar te r  i n  1976. 
The top t e n  species  comprised 91.7% of t h e  sampled ca tch  while t h e  o ther  
8.3% consis ted  of t h e  remaining 22 spec ies  (Table 2). It is  i n t e r e s t i n g  
t o  note  t h a t  throughout t h e  study t h e  top t e n  species  of rockf ish  have 
contributed about 90% of t h e  t o t a l  rockf ish  catch.  The species  compo- 
s i t i o n  may change by quar te r  but  t h e  top t e n  continue t o  represent  
approximately 90% of t h e  rockf ish  measured. 
Olive rockf ish  were the  most abundant rockf ish  accounting f o r  42.5% 
of t h e  catch,  up dramatical ly from 13.4% l a s t  quar te r .  Monthly mean 
lengths  (Figures 1-3) show o l i v e  rockf ish  taken t h i s  year  a r e  l a r g e r  than 
those caught l a s t  year.  September shows t h e  l a r g e s t  gain wi th  f i s h  taken 
during 1977 (5 length = 31.3 cm) averaging 6.4 cm l a r g e r  than those taken 
i n  1976 (E length ' 24.9 cm). Bocaccio (Figures 4-6) show l i t t l e  change 
i n  mean length  from t h e  comparable period l a s t  year  except f o r  a 4.8 cm 
decl ine  i n  September (1976 length  = 41.1 c m ;  1977 length  = 37.3 cm). 
The mean length  f o r  b lue  rockf ish  (Figures 7-9) remained r e l a t i v e l y  
s t a b l e  f o r  t h e  3 month per iod .  
SURFACE GAMEFISHES 
Four s p e c i e s  of s u r f a c e  f i s h  accounted f o r  50.0% of a l l  t hose  
measured. This  f i g u r e  i s  comparable t o  t h e  last  q u a r t e r  (50.1%) and 
a l s o  t o  t h e  3rd q u a r t e r  of 1976 (49.1%). Kelp b a s s  moved ahead of 
P a c i f i c  mackerel t o  become t h e  dominant spec i e s .  The average l e n g t h  
of k e l p  bas s  f o r  t h e  q u a r t e r  was 34.5 cm (Figures  10-12), no t  a  s i g n i -  
f i c a n t  d i f f e r e n c e  from last  q u a r t e r  when t h e  mean was 34.3 cm. However, 
when compared wi th  3rd q u a r t e r  of l a s t  yea r  t h e r e  i s  a 4.4 cm drop i n  
ave tage  , l eng th  (x l e n g t h  = 38.9 cm i n  1976).  P a c i f i c  mackerel ca t ches  
cont inued t o  show t h e  s t r e n g t h  of 1974 yea r  c l a s s  w i th  a l a r g e  mode a t  
39.0 cm (Figures  13-15). Fu r the r ,  they  a l s o  show a s t r o n g  1976 yea r  
c l a s s  a t  29.0 cm. A mean l eng th  of 35.8 cm f o r  ba r r ed  sand b a s s  
(F igures  16-18) shows a marked d e c l i n e  from last  q u a r t e r  when average 
l eng th  equaled 38.2 cm. On t h e  . o the r  hand, average l e n g t h .  remained t h e  
same (z = 35.8 cm) when compared t o  a  y e a r  ago. C a l i f o r n i a  barracuda 
cont inued t o  show s i g n s  of  recovery a s  t h e  1973 and 1974 yea r  c l a s s e s ,  
wi th  a mode between 60.0 and 67.0 cm, con t r ibu ted  h e a v i l y  t o  t h e  number 
of f i s h  measured (F igures  19-21). P a c i f i c  b o n i t o  ca t ches  dur ing  J u l y  
and August were dominated by t h e  1976 yea r  c l a s s  a t  about 48 cm FL 
(Figures  22-24). Add i t i ona l ly ,  by September, t h e  1977 y e a r  c l a s s  a t  
29 cm FL presented  a s u b s t a n t i a l  mode. 
EFFORT AND CATCH-PER-UNIT-EFFORT 
F i sh ing  e f f o r t  (average'number of a n g l e r s  pe r  t r i p )  f o r  t h e  q u a r t e r  
remained approximately equal  t o  what i t  was i n  t h e  comparable pe r iod  of 
1976 (Table 3). Fewer a n g l e r s  f i s h e d  i n  J u l y  b u t  t h i s  was o f f s e t  by an  
i n c r e a s e  i n  e f f o r t  dur ing  August and September. Catch-per-unit-of-effort  
i nc reased  d rama t i ca l ly  over  t h e  same q u a r t e r  las t  year .  J u l y  was up 49%, 
August was up 69%, and September was up 70%. The i n c r e a s e  i n  CPUE can be  
d i r e c t l y  a t t r i b u t e d  t o  a 500% i n c r e a s e  i n  t h e  t o t a l  number of P a c i f i c  
mackerel,  o l i v e  rock f i sh ,  and b l u e  r o c k f i s h  taken dur ing  t h i s  q u a r t e r  when 
compared wi th  t h e  same pe r iod  l a s t  yea r .  
TABLEI. Number of Fiehee Meaeured from Southern Cal i forn ia  Partgboate,July. through-September 1977, 
Common name 
Shark, thresher  
Surfperch, barred 
Sargo 
Sablef i s h  
Jacksmelt 
Seabass, white 
Whitefish, ocean 
Croaker, black 
Blacksmith 
Sanddab, Pac i f ic  
Sanddab, longfin 
Herring, Pac i f ic  
Surfperch, i s l and  
Surfperch, black 
Sole, pe t r a l e  
Croaker, white 
Opaleye 
Wrasse, rock 
Kelpfish, g ian t  
Sole, bigmouth 
Smelt, sur f  
Shark, boni to 
Sole, rock 
Half moon 
Corbina, Cal i fornia  
Hake, Pac i f i c  
Smoothhound, brown 
Salmon, s i l v e r  
Salmon, king 
Lingcod 
Senori ta  
oabe, kelp 
Bass, spot ted sand 
Bass, barred sand 
Halibut, Cal i fornia  
Sheephead, Cal i forn ia  
Turbot, C.O. 
Turbot, spot ted 
Turbot, hornyhead 
Shark, blue 
Skate, Cal i fornia  
Surfperch, rubber l ip  
Guitarf ish,  shovelnoee 
Croaker, epot f in  
Bonito, Pac i f i c  
Number 
Sc i en t i f i c  name meaeured 
A topias vutpinus 3 
Amphistickus argenteue 1 
Anisotremus davideonii 6 
Anop Zopoma fimbria 19 
Atherinopsis ca t i f o r n i s m i e  22 
Atractoscion nobi t i e  35 
CauloZatiZus princepe 492 
Cheitotrema saturnurn 9 
Chromis punctipinnis 7 
Cithurichthys sordidU8 60 
C. xanthostigrna 1 
CZupea harengus 1 
Cymatogaster gracit ie 1 
kb io toca  jackon i  1 
Eopsetta jordani 6 
Genyonemus lineatus 599 
Gire 2 la nigricans 1 8  
HaZichoeres semicinctue 4 
Heterostichus rostratue 54 
HippogZossina stomata 9 
Hypomesus pretwsue 1 
Isurus oxyrinchus 1 
Lepidopsetta biZineatu 3 
Mediatuna ca l i fomiens i s  378 
Menticirrhus undu Zatus 4 
MerZuccius productus 5 
MusteZus hentei 1 
Oncorhynchus kisutch 1 
0. tshawytscha 5 
Ophiodon e Zongatus 56 
OxyjuZis californica 1 3  
Paratabrax ctathratus 5,400 
P. . macuZatofasciatu8 7 
P. nebulifer 2,470 
ParaZichthys c a t i f o m h a  378 
PimeZometopon pu Zchnmr a 344 
Plewonichthys coenoeue 1 
P. r i t t e r i  5 
P. ver t icat ie  1 
Prionace gZauca 1 
Raja inornuta 1 
RhacochiZus t o m t e e  2 
Rhinobatos productus 14 
Roncador s tearnsi i  6 
Sarda chi t iens ie  290 
Number 
Common name S c i e n m  measured 
Mackerel, Pac i f i c  ' Scornber japonicus 5,030 
Sculpin Scorpaena guttata 684 
Cabezon Rockfish, ke lp  
Scorpaenichthys mmmoratus . 22 
Sebastes a t rov i rem 178 
Rockfish, brown S. auricuZatus 467 
Rockfish, gopher S. carmatus 221 
Rockfish, copper S. cawinus 152 
Rockfish, greenspotted S. chZorostiotus 4 6 
Rockfish, black & yellow S. chrysometae 38 
Rockfish, s t a r r y  S. conste ZZatus 136 
Rockfish, c a l i co  S. d a t t i i  9 8 
Rockfish, greenstr iped S. eZongatus 30 
Rockfish, widow S. entomezae 25 
Rockfish, pink S. eos 2 
Rockfish, ye l l owta i l  S, f Zavidus 19 
Rockfish, bronzespotted S,  giZZi 7 
Chilipepper S. goodei 1 5  
Rockfish, squarespot S. hopkinsi 517 
Cowcod S. Zevis 4 1  
Rockfish, black S. metanope 2 
Rockfish, vermilion S. miniatue 232 
Rockfish, blue S. mystinus . 2,500 
Rockfish, speckled S. ovaZis 19 
Bocaccio S. paucispinie 667 
Rockfish, canary S. pinniger 18 
Rockfish, g rass  S. ras t r e  2 t iger  63 
Rockfish, rosy S. rosaceus . 131 
Rockf iah ,  greenblotched S. rosenbta$ti 11 
Rockfish, yelloweye S. ruberrimcs 1 
Rockfish, f l a g  S. rubrivinctue 8 1  
Rockfish, halfbanded S. semicinctue 1 
Rockfish, o l i v e  S ,  serranoidee 4,445 
Treef i s h  S. serriceps 86 
Rockfish, honeycomb S. wnbrosue 214 
Unid . rockf i sh  S. species 1 .  
Yellowtai l  Seriota dorsatie 22 
Queenf i s h  Seriphus poZitu8 60 
Barracuda, Cal i forn ia  Sphyraena argentea 1,406 
Dogfish, spiny Squatus acanthiae 7 
Sea bass ,  g i an t  . Stereolepis gigas 1 
Needlefish, Ca l i forn ia  Strongytura ex i t i t ,  1 
Lizardfish,  Ca l i forn ia  Synodus Zucwceps 49 
Mackerel, jack Trachurus symmetricue 135 
TOTAL 28,617 
TABLE2. Species Composition of Rockfishes (Sebastes spp.) Catch from 
Partyboat Samples, July through September 1977. 
Common name Scientific name Frequency of Occurrence (%) 
Olive 
Blue 
Bocaccio 
Squarespot 
Brown 
Vermilion 
Gopher 
Honeycomb 
Kelp 
Copper 
Starry 
ROSY 
Calico 
Treef ish 
Flag 
Grass 
Greenspotted 
Cowcod 
Black & Yellow 
Greenstriped 
Widow 
Yellowtail 
Speckled 
Canary 
Chilipepper 
Greenblotched 
Bronzespo tred 
Pink 
Black 
Yelloweye 
Halfbanded 
Unidentified species 
Sebastes serranoides 
S. mystinus 
S. paucispinZs 
S. hopkinsi 
S. auricuZatus 
S. miniatus 
S. camatus 
S. wnbrosus 
S. atrovirens 
S. caurinus 
S. conste Zlatus 
S. rosaceus 
S. d a t l i i  
S. serriceps 
S. rubrivinctus 
S. rastreZ Ziger 
S. chZorostictus 
S. levis 
S. chzysomehs 
S. e Zongatus 
S. entome las 
S. ftattidus 
S. ovalis 
S. pinniger 
S. goodei 
S. ro senbk t t i  
S. gi Z l i  
S. eos 
S. me Zanops 
S. rubemirnus 
S. semicinctus 
S. spp. 
TABLE 3. E f f o r t  and Catch per-Unit-Effort Values Determined from Par tyboa t  Samples f o r  Each Por t  
Complex and Month, January 1976 through September 1977. 
P o r t  
complex J a n  Feb Mar Apr May Jun J u l  Aug Sep Oct Nov Dec 
Uo. t r ipslmonth 
1 7 8 8 10 10  11 0 4 1 2  8 1 4  11 
2 7 5 7 7 1 0  9 5 7 5 2 4 6 
3 3 2 2 2 3 4 3 2 2 4 6 4 
4 7 5 .6 9 10  8 13 9 8 9 7 8 
5 11 16 12 11 9 8 1 2  13 6 7 14  1 2  
Awg. no. a n g l e r s i t r i p  
1 29.71 19.25 28.63 20.50 48.10 44.55 - 46.00 28.66 23.88 15.64 18.30 
2 26;57 23.00 20.57 21.57 30.20 36.89 51.20 45.71 29.60 21.50 18.50 19.70 
3 22.33 22.00 11.50 23.00 21.67 45.50 44.33 36.50 38.50 19.50 33.17 23.30 
4 30.57 29.00 26.17 25.33 26.20 39.38 43.23 49.11 30.75 27.20 25.28 27.50 
5 22.00 23.44 29.58 29.00 31.56 35.38 39.67 39.92 25.83 23.70 24.21 21.90 
6 16.40 25.64 23.83 22.89 26.22 27.13 43.30 38.44 '24.00 21.46 18.00 19.60 
- Average 24.91 23.32 33.38 24.06 31.96 37.90 43.26 42.22 28.14 23.30 21.30 21.50 
No. fish caught lang le r  
1 hour f i s h e d  1 1.20 1.36 1.20 0.95 1.28 2.07 - 0.40 0.70 1.14 2.45 2.21 
2 1.47 1.16 1.16 0.73 0.92 1.13 0.92 0.44 0.39 1.21 2.09 1.66 
3 1.25 0.50 2.16 1.47 0.67 0.70 0.43 0.55 0.55 0.89 1 . 6 1  1.00 
4 1.87 1.77 1.48 1.67 0.80 0.94 0.76 0.80 1.18 2.07 2.19 2.19 
5 3.28 2.77 2.51 1.97 1.47 0.74 0.69 1.05 1.09 1 - 0 0  1.66 2.54 
197 7 
P o r t  
I 
complex Jan  Feb Mar r F ~ Y  Jun J u l  Auq Sep 
No. t r i p s /  month , 
1 1 3 7 10  8 10  1 2  9 8 
\ 2 6 2 2 2 3 5 9 11 1 2  
3 4 3 2 2 - 3  5 5 5 4 
4 7 4 4 7 12 1 0  11 13 11 
5 10 5 8 7 8 6 9 1 2  1 6  
6 1 4  11 7 10  7 1 0  1 0  11 16 
TOTAL 42 28 30 38 4 1  46 56 6 1  6 7 
Avg. no. a n g l e r s i l t r i p  
1 17.00 56.00 24.00 30..30 18.62 27.70 42.58 50.00 36.87 
2 1 18.33 32.50 23.00 24.00 19.67 30.40 40.78. 40.55 22.00 
3 25.75 27.67 22.00 15.00 27.33 35.20 36.20 32.80 23.50 
4 28.57 32.50 24.00 33.00 31.17 42.80 41.27 29.54 28.27 
5 21.60 36.00 22.87 33.29 17.50 20.50 28.00 24.50 22.75 
6 19.00 30.45 26.14 25.50 23.14 12.30 31.20 41.82 22.75 
Average 21.00 34.00 22.00 28.00 23.00 32.00 37.00 36.00 26.00 
No. f i s h  caught lang le r  
hour f i e h c d  1 1.85 1.35 0.89 0.98 1.29 0.98 1 - 1 0  0.98 1.30 
2 1.11 0.48 1.77 0.22 0.96 2.18 0.87 1.02 1.13 
3 4.03 0.66 1.86 0.60 1.00 1.20 0.62 1.29 1.06 
4 2.95 2.30 1.19 1.55 1.70 1.60 1.11 1.50 1.58 
5 2.40 0.88 2.30 1.07 0.47 1.00 0.96 1.74 1.70 
6 4.04 1.54 1.11 1.64 1.05 0.59 1.29 1.40 2.36 
Average 2.61 1.29 1.44 1.21 1.21 1.25 1 - 0 4  1.30 1 . 6 3  
LENGTH HISTOGRAM FOR OLIVE ROCKFISH (SEBASTES SERRANOIDESI  
OURING JULY 1977 .  
THE Y- A X E S  = FRIQ'Jclh'CVlNUM3ER OF FIS4.) -- 
M~LTIPLICATION FA:TOR = 2.0. 
THE X - A X I S  = L:NGTH (SENTIHETERSI  
TOiAL.NO._= 5 7 9 -  _ .- HEAN = 2 j . 6 2 3  STANDARD o E v I a T I a k  2- -3. 4 0 7  _ - -_ - -  . 
FIGURE 1. Length f r equenc i e s  of o l i v e  r o c k f i s h  f o r  J U ~ Y  1977. 
I 
+' * 4 
o m m  
In* -t 
- I .. 
. . .  
























Southern California partyboat sampling study Quarterly Report no. 9

Southern California partyboat sampling study Quarterly Report no. 10

http://aquaticcommons.org/73/1/Marine_Resources_Administrative_Report_No._78-11.pdf

Southern California partyboat sampling study Quarterly Report no. 10

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