﻿REVIEW 
  OF 
  CERTAIN 
  MAJOR 
  FISHERIES 
  

  

  PACIFIC 
  TUNA 
  FISHERY, 
  1970 
  

  

  Domestic 
  landings 
  of 
  tuna 
  at 
  Pacific 
  Coast 
  and 
  Hawaii 
  ports 
  were 
  386.9 
  million 
  pounds 
  

   worth 
  $74.0 
  million 
  — 
  a 
  gain 
  of 
  64.7 
  million 
  pounds 
  (20 
  percent) 
  and 
  $19 
  . 
  5 
  million 
  (36 
  percent) 
  com- 
  

   pared 
  with 
  1969. 
  The 
  principal 
  reason 
  for 
  the 
  increased 
  volume 
  was 
  record 
  landings 
  of 
  yellowfin 
  

   tuna, 
  237.4 
  million 
  pounds 
  (up, 
  15 
  percent); 
  near-record 
  landings 
  of 
  albacore, 
  56.1 
  million 
  (up 
  17 
  

   percent); 
  and 
  a 
  marked 
  increase 
  in 
  landings 
  of 
  skipjack 
  tuna, 
  84.2 
  million 
  pounds 
  (up 
  62 
  percent) 
  . 
  

   Bluefin 
  tuna 
  landings, 
  however, 
  were 
  43 
  percent 
  less 
  than 
  in 
  1969. 
  The 
  greater 
  value 
  resulted 
  

   chiefly 
  from 
  a 
  sharp 
  increase 
  in 
  the 
  average 
  price 
  per 
  pound 
  received 
  by 
  fishermen 
  for 
  albacore 
  tuna, 
  

   and 
  from 
  smaller 
  increases 
  in 
  the 
  prices 
  of 
  bluefin, 
  skipjack, 
  and 
  yellowfin 
  tuna. 
  

  

  In 
  accordance 
  with 
  the 
  recommendation 
  of 
  the 
  Inter-American 
  Tropical 
  Tuna 
  Commission, 
  

   the 
  1970 
  quota 
  of 
  yellowfin 
  tuna 
  from 
  the 
  eastern 
  tropical 
  Pacific 
  was 
  held 
  to 
  120,000 
  tons. 
  The 
  

   fishery 
  opened 
  January 
  1 
  and 
  closed 
  March 
  23, 
  1970. 
  It 
  was 
  the 
  fifth 
  consecutive 
  year 
  that 
  this 
  

   fishery 
  operated 
  under 
  a 
  quota 
  system 
  designed 
  to 
  maintain 
  the 
  yellowfin 
  population 
  at 
  the 
  maximum 
  

   sustainable 
  yield. 
  

  

  A 
  total 
  of 
  7,621 
  fishermen, 
  1 
  ,420 
  vessels 
  , 
  and 
  596 
  motor 
  boats 
  were 
  employed 
  in 
  the 
  Pacific 
  

   tuna 
  fisheries 
  — 
  a 
  decline 
  of 
  29 
  fishermen, 
  599 
  vessels, 
  and 
  28 
  motor 
  boats 
  compared 
  with 
  1969. 
  

   Purse 
  seines, 
  the 
  principal 
  gear 
  used 
  in 
  taking 
  bluefin, 
  skipjack, 
  and 
  yellowfin 
  tuna, 
  accounted 
  

   for 
  76 
  percent 
  of 
  the 
  landings. 
  Lines, 
  used 
  mainly 
  in 
  taking 
  albacore 
  tuna, 
  accounted 
  for 
  the 
  re- 
  

   maining 
  24 
  percent. 
  

  

  SUMMARY 
  OF 
  PACIFIC 
  TUNA 
  OPERATING 
  UNITS, 
  1970 
  

  

  SEE 
  FOOTNOTE 
  AT 
  END 
  OF 
  TABLE. 
  

  

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