Statewide Pacific ocean shrimp, Pandalus jordani, landings totaled 4,992,233 lb, a record annual catch that was double the 1974 catch of 2,382,821 lb. Landings for Areas A, B-1, B-2, and C were 3.4, 0.3, 1.2, and 0.06 million lb, respectively. Catch per hour trawled by single gear vessels ranged from 360 to 2,443 lb per hour for the 4

areas. The outlook is for good 1976 seasons in Areas A and B-1 if the moderately strong 1974 year class is complemented by strong recruitment of the 1975 year class. Prospects for Areas B-2 and C are not as promising as those of other areas due to weak 1974 year classes. (20pp.

Dahlstrom, Walter A.

Nelson, Nancy E.

Schultz, Steven A.

Aquatic Commons

State of California 
The Resources Agency 
LIBRARY 
OCEAN SHRIMP mPORT 
1975 SEASON 
Nancy E. Nelson 
St even S chult z 
and 
Walter A. Dahlstrom 
NINETEENTH r n A L  SHRIMP m m R T  
MARINE m m c m  
Administrative Report No. 76-5 
OCEAN SHRIMP REPORT 
1975 SEASON 1/ 
Nancy E. Nelson 
Steven Schultz 
and 
Walter A. Dahlstrom 9 
NTNETEENTH P;NNIJAL SHRIMP REPORT 
ABSTRACT 
Statewide Pac i f i c  ocean shrimp, Pandalus jordani, landings t o t a l ed  
4,992,233 l b ,  a record annual catch t h a t  was double the  1974 catch of 
2,382,821 lb .  Landings f o r  Areas A, B-1, B-2, m d  C were 3.4, 0.3, 
1.2, and 0.06 mil l ion l b ,  respectively.  Catch per  hour trawled by 
s ing le  gear vessels  ranged from 360 t o  2,443 l b  per  hour f o r  t he  4 
areas. The outlook i s  f o r  good 1976 seasons i n  Areas A and B-1  i f  t h e  
moderately strong 1974 year  c l a s s  i s  complemented by strong r ec ru i t -  
ment of the  1975 year  c lass .  Prospects f o r  Areas B-2 and C a r e  not  as 
promising as those of other  areas due t o  weak 1974 year c lasses .  
1,' Marine Resources Administrative Report No. 76- 5, March 1976 - 
2,' Marine Resources Region, 619 2nd St . ,  Eureka, CA 95501 3 Marine Resources Region, c/o Dept. Parks and Recreation, S t a r  Route, 
Mendocino, CA 95460 
4/ Marine Resources Region, 411 Burgess D r . ,  Menlo Park, CA 94025 - 
OCEAN SHRIMP REPORT 
1975 SEASON 
Cal i fo rn ia ' s  1975 ocean shrimp landings of 4,992,233 l b  broke a l l  
ex i s t ing  records. The previous record was 4,053,104 mil l ion l b  i n  1970. 
Last season 2,382,8211b were landed. The increase was due pr imari ly  
t o  an increased quota i n  Area A and two quota increases i n  Area B-2, 
which made t he  higher landings possible.  
Area A 
The 1975 Area A shrimp landings of 3.4 mil l ion l b  were double those  
of l a s t  year  (1974) and t he  second best  i n  t h e  h i s to ry  of t he  f ishery.  
Landings i n  southern Oregon's Area 19 (cape Blanco t o  t h e  Ca l i fo rn ia  
s t a t e  l i n e )  a re  not  y e t  avai lable ,  but a r e  thought t o  be small. 
To ta l  landings f o r  Area A would have been higher had it not  been 
f o r  several  p r i ce  t ie-ups  during t h e  season. Although t h e  season opened 
Apri l  16, no p r i ce  was agreed upon u n t i l  May 10 when one company signed 
f o r  168 per  lb .  Last year ' s  opening p r i ce  was 25# p e r ' l b .  By t he  
end of May, all companies had signed f o r  158 with most boats f i sh ing  on 
l im i t s .  Bad weather and more market problems kept f i sh ing  e f f o r t  down 
i n  June. On June 6, p r i ce  dropped t o  108 per  l b  and remained there  un- 
til t h e  boats t i e d  up f o r  a b e t t e r  p r i ce  on June 23. 
A sett lement of 13# per  l b  was reached on Ju ly  6. Good weather and 
excellent  f i sh ing  prevailed throughout t he  month, with good concentra- 
t i ons  of shrimp occurring from Point  S t .  George t o  Pa t r ick ' s  Point  i n  
50 t o  90 f'm ( ~ i g u r e  1 ) .  I n  August, fishermen were plagued with a good 
i California 
Pacific 
Ocean 
' 5  miles 
- ti' 
I I Trinidad 
FIGURE 1. Area'A ocean shrimp catch locat ions ,  1975. 
dea l  of bad weather and with heavy concentrations of smelt (~smer idae)  
and s o f t  crabs (cancer magister) on t h e  grounds. On September 2, f i sh -  
ermen withdrew t h e  13# market orders, asking f o r  a r a i s e  t o  15-3/4#. A 
sett lement of 14-3/4# was arr ived at on September 12, but only two COD- 
panies continued t o  buy f o r  t h e  remainder of t he  season. Some good f i sh-  
ing occurred. in  ea r ly  October on t h e  extreme southern end of t h e  bed from 
Redding Rock t o  Trinidad. 
Catch per  hour remained high throughout t he  season; 18 s ing le - r ig  
and f i v e  double-rig vessels  averaged 798 and 975 l b  per  hour respect ively  
f o r  t h e  season  a able 1). Shrimp were found i n  such good concentrations 
on t h e  e n t i r e  bed during Ju ly  t h a t  on August 15  t he  Fish and Game Commis- 
sion ra i sed  the  Area A quota from 3.2 t o  4.7 mil l ion lb .  
Shrimp of t h e  strong 1973 year  c lass ,  as  2-year-olds, dominated t h e  
catch by numbers and by weight from May through August  a able 2) .  Num- 
bers of 1-year-old males and t r ans i t i ona l s  increased i n  September and 
made up over 65% of the  catch i n  October. Only a small percentage of 
primary females was found i n  October samples  a able 3). 
Average carapace lengths of shrimp during t he  1975 season a r e  shown 
i n  Table 4, along with 1974 f igures  f o r  comparison. Although 1974 year 
c lass  shrimp were l a r g e r  i n  M a y  than comparable shrimp i n  1974, they 
grew more slowly gaining only 2.1 mrn (0.08 inches) i n  length,  as opposed 
t o  a gain of  3.4 mm (0.13 inches) by t he  1973 year  c l a s s  from May through 
October 1974. Two-year-old shrimp a l so  grew more slowly i n  1975, gain- 
ing only 1.9 rnm (0.07 inches) during the  smmer compared t o  a growth of 
2.3 mm (0.09 inches) by t he  1972 year  c l a s s  i n  1974. . 
TABLE 1. Area A Monthly Catch and Ef for t  Data, 1975 (Ca l i fo rn ia  
Ports  only). 
Single-r ig  Vessels 
Pounds E f fo r t  Pounds 
Month landed (hours) per  h r  Vessels Trips 
MW 147,008 95 5 1,539 9 27 
June 280,560 381.3 736 10 57 
J U ~ Y  1,169,340 1,316.7 888 15 182 
~ u g u s t  605,396 963.7 628 16 152 
September 192,481 239 8 803 6 33 
October 113,274 146.8 772 5 17 
Totals  2,508,059 3,143.8 798% 18- 468 
Double-rig Vessels 
Pounds E f fo r t  Pounds 
Month landed (hours) per  h r  Vessels Trips 
M a 3 ~  13,672 3.7 3,695 1 1 
June 104,682 140.9 743 4 1 3  
Ju ly  245,975 298.6 824 4 2 3 
August 162,395 153.7 1,057 4 17  
September 204,920 160.7 1,275 5 18 
October 155,475 152.2 1,022 5 18 
~ o t d s  887,119 909 8 975* 5* 90 
we Tota l  vessels which made landings. 
TABLE 2. Area A Count per Pound and Year Class Composition of Shrimp, 1975 Season. 
Age class  
Count percent by number 
Month per l b  0 I I1 I11 
Age class  
percent by weight 
0 I I1 I11 
MW 134 0.0 26.4 70.1 3.5 0.0 15.3 78.4 6.2 
June 123 0.0 28.0 62.4 9.6 0.0 15.5 67.5 17.0 
- J u l y  119 0.0 40.1 55.9 4.0 0.0 25.2 66.9 7.8 
August 113 0.0 45.1 52.2 2.6 0.0 30.0 64.8 5.2 
September 131 0.0 58.4 41.0 0.6 0.0 44.0 54.7 1.3 
October 128 0.0 65.8 33.7 0.5 0.0 51.9 47.2 0.9 
TABLE 3. Year Class and Sex Composition o f  Area A Shrimp by Month, 1975 Season 
(percentages). 
Month 
Males Transitionals 
0 I I1 I I1 
Females 
I I1 I11 
Mw 
June 
July 
August 
September 0.0 44.7 0.2 12.4 10.4 1.4 30.4 0.6 
October ,O.O 61.1 0.0 4.2 6.0 0.5 27.7 0.5 
TABm 4. Average Carapace Length (mm) of Area A Shrimp, 1974 and 1975 Seasons 
Season 1974 1974 1975 1974 1975 
(1973) (year c l a s s )  (1972) (1973) (1971) (1972 
April  12.8 18.7 22.6 
MW 12.9 14.2 19.2 18.5 22.6 21.7 
June 14.3 14.7 19.9 18.8 23.0 22.4 
Ju ly  15.3 15.6 20.3 19.7 23.4 23 3 
A U W S ~  15.9 16.2 20.8 20.1 23.6 23.6 
September 16.6 16.3 21.0 20.4 24.0 24.2 
October 16.3 16.3 21.5 20.4 24.1 24.4 
Area B-1 
Landings t o t a l ed  31+7,832 l b  f o r  t he  -1.975 season i n  Area l3-1. Last 
season (1974) 517,146 l b  were landed. 
Fishing began on Ju ly  16. Fishing e f f o r t  was sporadic throughout 
t h e  season. No Fort  Bragg based vessels  entered t h e  f i shery ,  and f i sh-  
ing e f f o r t  corre la ted with quota closures i n  Area B-2 and/or drop i n  
catch r a t e s  i n  Area A. Tota l  landings would have been considerably 
higher i f  a c o n t i n ~ ~ o u s  f ishery was maintained throughout t h e  season. 
Pr ice  was 12.54 per  l b  from Ju ly  t o  September 12, increasing t o  15# 
per  l b  f o r  t he  remainder of the  season. 
Fishing e f f o r t  during Ju ly  and August concentrated o f f  Usal i n  65 t o  
85 fm, ranging from Mistake Point t o  Rockport ( ~ i g u r e  2 ) .  Eighteen tows 
made during t h i s  period between Ten Mile River and Cape Vizcaino produced 
l e s s  than 200 l b  t o t a l l y .  
stake Point 
Abalone Point 
Pacific Ocean 
FIGURE 2. Area B-1 ocean shrimp catch locations, 1975 season. 
The f i shery  sh i f t ed  south i n t o  shallower water i n  September, rang- 
ing from Usal t o  Hardy Creek i n  50 t o  75 f'm. 
In  ant ic ipat ion of consis.tent e f f o r t  and continued high catch r a t e s ,  
a request f o r  a 500,000 l b  quota increase  was submitted t o  t he  Fish arid 
Game Commission a t  t he  October 3 meeting by t h e  industry.  The request 
was granted, increasing B - 1  quota t o  1 mil l ion l b .  
I n  October, f i sh ing  e f f o r t  was l i g h t ,  occurring i n  t he  extreme 
southern port ion of t he  f i shery  with almost no e f f o r t  i n  t h e  previously 
productive areas.  
A t o t a l  of seven vessels par t i c ipa ted  i n  the  B-1 f i shery,  four s ing le  
draggers averaged 8411- l b  per  h r  f o r  the  season, while three double drag- 
gers averaged 1,293 l b  per  h r   able 5) .  Eureka based double draggers 
landed i n  Eureka, and each t r i p  usual ly  consisted of th ree  f i sh ing  days. 
Two-year-old shrimp (1973 year  c l a s s )  dominated t he  catch i n  nm-  
bers and weight  a able 6) .  Two-year-old females s t ead i l y  increased 
throughout the  season, accounting f o r  46% of the  catch i n  October  a able 7) .  
Average carapace length by year  c l a s s   a able 8) ind ica tes  b e t t e r  
growth r a t e s  than Area A and comparable with Area B-2 during J u l y  through 
September, with a s imi la r  l eve l ing  off  i n  growth i n  October. 
TABIiE 5.  Area B - 1  Catch and Ef for t  Data, 1975 ( ~ a l i f o r n i a  Ports  only). 
Single-r ig  Vessles 
Pounds Ef for t  Pounds 
Month landed (hours) per  h r  Vessels Trips 
J U ~ Y  59,588 57.5 1,036 
~ u g u s t  39,284 51.9 757 
September 36,223 30.7 1,181 
October 11,410 28.3 403 3 7 
Totals  146,505 168.4 844* 4* 38 
TABLE 5. (contd.) 
Double-rig Vessels 
July - - - - - - --- - - - - - - 
~ u g u s t  90,484 84.6 1,070 3 7 
September 110,843 71.1 1,559 3 6 
October --- - - - -- - - - - - - - 
Totals 201,327 155.7 1,293* 3)ex 13 
Season Total All Vessels 
* Mean 
%+ Total vessels which made landings. 
TABLE 6. Area B-1  Count per l b  and Year Class Composition of Shrimp, 
1975 Season. 
Age class  Age class  
Count , percent by number percent by weight 
Month per l b  0 I I1 I11 0 I I1 I11 
Jul;y 127 0.0 36.9 61.1 1.9 0.0 25.1 71.8 3.2 
August 117 0.0 45.1 53.7 1.3 0.0 32.7 65.1 2.2 
S ept enker 113 0.0 48.8 50.6 0.6 0.0 36.9 62.1 1.0 
October  107 0.0 44.4 53.4 2.2 0.0 33.3 63.0 3.7 
TABLE 7. Year Class and Sex Composition of Area B-1  Shrimp by Month, 
1975 Season (percentages). 
Month 
Males Transitionals Females 
0 I I1 I I1 I I1 I11 
July 0.0 27.4 2.9 9.5 34.5 0.0 23.7 1.9 
August 0.0 31.6 1.6 11.6 28.3 1.9 23.8 1.3 
September 0.0 '32.7 0.7 10.1 14.9 5.9 35.1 0.6 
October 0.0 30.3 1.1 8.4 6.2 5.7 46.1. 2.2 
TABLE 8. Average Carapace Length (mm) of Area B - 1  S h r i m ~ ,  1975 Season. 
Month 
-- - 
Ju ly  15.8 19.1 21.6 
August 16.6 19 9 22.3 
September 17.3 20.5 22.6 
October 17.1 20.3 22.6 
Area B-2 
Area B-2 fishermen broke t he  area  landing records with landings of 
1,187,719 l b ,  the  l a rge s t  catch s ince  1957 when 450,000 l b  were landed. 
Fishing s t a r t ed  on Apr i l  16 and 18, with one vesse l  attempting t o  
nezot ia te  a higher p r i ce  than the o f f e r  of 1.4# per  l b .  The fisherman was 
unsuccessful i n  obtaining a higher pr ice ,  so he delivered t o  t he  l o c a l  
Bodega Bcw market f o r  18# per  l b  during t h e  followirig 2 weeks. Volume 
f i sh ing  f i n a l l y  got s t a r t e d  on blay 7 when two companies s t a r t e d  buying 
a t  16# per  l b ,  and two more vessels entered t he  f ishery.  
Fishing i n  M a y  occurred mosbly of f  Salmon Creek i n  34 t o  41 f m  
(Figure 3). Fishing was excel lent ,  and t he  quota of 250,000 l b  was 
reached on M q  28 when t h e  a rea  was closed. The a rea  was reopened by 
the  Commission a t  midnight June 2 with a 500,000 l b  increase  t o  750,000 
l b .  Fishing continued i n  t he  same a rea  at app~*oxima-Lely the  same depths 
u n t i l  Ju ly  9 when the  quota was reached and t h e  area  closed. 
The Commission reopened the  area  oil Ju ly  29 with a quota of 1,100,000 
l b .  Fj-shing during August extended from Sallnon Creek t o  For t  Ross i n  
2 mi l e s  
-- 
FIGURE 3 .  Area B-2 ocean shrimp ca tch  l o c a t i o n s ,  1975. 
39 t o  45 fm. Fishing was good but t h e  fishermen had t o  keep up with t h e  
shrimp which were apparently migrating t o  t he  north. The quota was 
reached and t he  area  was closed a t  midnight August 27, with f i n a l  land- 
ings of 1,187,719 l b .  
Average catch per  h r  f o r  t he  season was a high 2,443 lb .  This i s  
t h e  second highest  catch per  h r  on record. The record i s  2,722 l b  per 
h r  f o r  246,000 l b  landed i n  1973. Average catch per  h r  ranged from a 
low of 358 l b  i n  Apri l  t o  a high of 4,531 l b  i n  May  a able 9 ) .  Even 
through August, the  catch per  h r  averaged 3,000 Ib.  A t o t a l  of f i v e  
vessels f ished i n  Area B-2 during t he  season and these uere s ing le  r ig -  
gers.  Sampling of t h e  catch throughout t h e  season revealed a strong 
1973 year c l a s s  (2-year-olds), which showed an average of 78.5% by number 
TRBW 9. Monthly Shrimp Landings and Ef for t  of Area B-2, 1975 Season. 
Pourlds Ef for t  Pounds Vez: se1.s Trips 
Month landed (hours) per  h r  
Apri l  11,652 13.0 358 1 5 
Mw 315, 415 69.6 4,531 4 2 7 
June 331,343 174.4 1,900 5 45 
Ju ly  248,871 92.2 2,699 5 30 
~ u g u s t  287,438 136.9 3,000 5 38 
1,187,719 486.1 2,443-X- 5w 145 
* Mean 
++% Total  vessels  t h a t  made landings. 
and 811.4% by weight i n  t h e  samples  a able 10).  The 1974 year  c l a s s  
(l-year-olds) and the 1972 year class (3-year-olds) were represented 18.8 
and 3.3% by number and 10.8% and 4.8% by weight, respectively. Average 
heads-on counts per lb ranged from 117 in May to 97 in August. The sea- 
son average, weighted by monthly landings, was 108. Two-year-old females 
contributed 44.4% of the catch. One-year-old males and 2-year-old males, 
TABLE 10, Count per lb and Year Class Composition, Area B-2, 1975 Season. 
Age class Age class 
Heads-on percent by number percent by weight 
Month count per lb I I1 I11 I I1 I11 
April 106 12.9 83.3 3.8 6.3 88.5 5.2 
MW 117 21.7 73.1 5.2 12.3 79-8 7.9 
June 112 26.2 71.9 1.9 16.5 80.5 3.0 
JU~Y 103 16.9 80.5 2.6 10.3 85.8 3.9 
August 97 13.2 83.9 2.9 8.4 87*6 4.0 
Seasonal 
average 108 18.2 78.5 3.3 10.8 54.4 4.8 
which made up most of the remainder, were represented by 17.3 and 20.5% 
respectively in the samples  a able 11) . Primary females (l-year-old 
females and transitionals) accounted for only 5.3% of the 1-year-old 
population in August. This indicates that most of the 1-year-olds year 
class remained males through the rest of the year. In 1974, primary 
females accounted for 58.5% of the 1-year-old population in September. 
T A B  11. Year Class Cofiposition, Area R-2, 1975 Season. 
- -.--- - 
-,- 
(percent by number) 
Males Transi t ionals  Females 
I I1 I I I I I1 111 
Apri l  12.5 17.7 0.4 5.9 0.0 59.7 3.8 
May 21.4 23.8 0.3 11.3 0.0  38.0 5.2 
June 24.4 18.4 l . 7  14.0 0.4 39.3 1.8 
J U ~ Y  15.4 18.0 1.2 16.6 0.2 46.0 2.6 
Augu.s t 12.5 24.7 0.6 20.1 0 .1  39.1 2.9 
S ensonal 
a v  crage -17.3 20.5 0.8 13.6 0 .1  44.4 3.3 
One-year-old shrirnp grew a;pproxima t c ly  1.'7 mn (0.7 inches),  2-year- 
olds grew app-roximately 0.9 mm (0.035 inches),  and 3-ycc~r-olds grew 
about 1.0 mm (0,011 itches) Crorfi Apr i l  $0 Au~1l:;t (~ats2-c 12). Cro:.! th 
r a t e s  fo r  t he  f i r s t ;  two year ' s  c lasses  appeared slower than  l a s t  season. 
TAB18 12. Average Carapace Length ( ~ m x ) ,  Ares 5-2, 1975 Season. 
1-year-old 2-year-old 3-year- o ld  
Month (1974 year  c lass)  (1373-year-class) (1972-year-class) 
Apri l  
May 
June 
Ju ly  
Augp s t 
Area C 
Area C landings t o t a l ed  62,009 l b  and were the  highest  landings 
since 1970 when 66,600 l b  were landed. A double-rigger (two-net trawling) 
caught 57,975 l b  i n  M a y  and June, and a s ingle-r igger  caught 4,034 l b  i n  
September  a able 13) .  Catch per  h r  f o r  the  double and s ing le - r ig  vessels  
was 861 m d  360 l b  respect ively  f o r  t he  season, Fishing took place  o f f  
Pt .  San Luis i n  84 t o  124 fm ( ~ i ~ u r e  4 ) .  
Two-year-old shrimp (1973 year c l a s s ) ,  which dominated t he  catch by 
number and a l so  by weight, accounted f o r  73.2% by number and 66.% by 
weight of the  season catch  a able 14).  
TABLE 13. Monthly S h r i q  Landings and Ef for t ,  Area C,  1975 Season. 
Month 
Double-rig vessel  
Pounds Ef for t  Pounds 
landed (hours) per  h r  Vessels Trips 
May 34,385 48.3 712 
June 23,590 19.0 1,347 
57,975 67.3 861%. l*-x 
Single-r ig  Vessel 
September 4,034 11.2 360 1 3 
Totals  - a l l  Vessels 
62,009 78.5 7 8 P  2 ~ +  10 , 
* Mean 
*% Total  vessels t h a t  made landings. 
-- 
100 fm 
I 
\ 
1 
\ 
\ 
\ -'\-. %- Avila Beach 
\ 
\ 
/ 
\ 
I 
1 
\ 
I 
I 
* f 
I 
FPGIJRE 4 .  Area C ocean shrimp ca tch  l o c a t i o n s ,  1975. 
TABLE 14. Count per l b  and Year Class Composition, Area C, 1975 Season. 
Age c l a s s  Age c l a s s  
Heads-on percent by weight percent by weight 
Date count / l b  I I1 I11 I I I I11 
MW 29 t o  
June 1 62 3.5 73.0 23.5 1.3 66.9 31.8 
June 8 64 2.0 73.5 24.5 0.5 66.3 33.2 
Seasonal 
a.verage 63 2.8 73.2 24.0 0.9 66.6 32.5 
Heads-on count per  l b  averaged 63 f o r  the  season, with an average of 
62 and 64 per  l b  i n  M ~ J  and June, respectively.  
Outlook 
I n  Area A, t h e  r e l a t i v e  s t rength of t he  1975 year  c l a s s  i s  unknown 
a t  t h i s  time. The 1974 year  c lass ,  although not as strong as t h e  1973 
year  c lass ,  i s  expected t o  carry  t h e  f i shery  as 2-year-olds i n  1976 
with ass is tance from t h e  incoming 1975 year  c lass .  
The outlook f o r  Area B-1, based on t he  r e l a t i v e  s t reng th  of t h e  1974 
(l-year-old) year  c lass ,  indicates  t h a t  the re  w i l l  be a v iable  f i shery  
i n  1976. However, t h e  s t rength  of t he  1975 year  c l a s s  (young-of-the-year) 
i s  unknown and i t s  s t rength  could a f f ec t  count per  pound f igures .  
Area B-2 outlook does not  look promising with a r e l a t i v e l y  weak 1974 
year c l a s s  i n  t he  f i shery  during t h e  season. Ten tows during t h e  N. B. 
SCOFIEUI c ru i s e  i n  September produced no shrimp and only seven 2-year-old 
shrimp were recovered i n  221 hake, Merluccius productus, stomachs. No 
1974 o r  1975 y e a r  c l d s s  shrimp were found. Areads t rawled  covered an 
a r e a  from o f f  S&r,cn Creek t o  n o r t h  of  F o r t  Ross i n  38 t o  45 fm.  It 
appears  t h a t  the  s h r i x p  cont inued t h e i r  north~,qard migra t ion ,  which was 
eviderlt  i n  August . 
Strong recru i tment  f ron  the 1975 y e a r  c l a s s  i n  Area C i s  needed t o  
s t r eng then  tlhe popula t ion .  


Ocean Shrimp Report 1975 Season

http://aquaticcommons.org/94/1/Marine_Resources_Administrative_Report_No%5B1%5D._76-5.pdf

Ocean Shrimp Report 1975 Season

Abstract

Similar works

Full text

Available Versions

Aquatic Commons