. Commercial fisheries review. Fisheries; Fish trade. November 1957 COMMERCIAL FISHERIES REVIEW 27 being tagged. Others taken a few days after tagging showed evidence of promptheal- ing, with formation of scar tissue around the dart head and the external wound. Fi- nally, wounds on fish out 2 or 3 months are invariably healed in a manner suggesting that the tag will remain on the fish indefinitely. ***** AREA OF PERSISTENTLY OCCURRING SKIPJACK TUNA FOUND IN HAWAI- IAN WATERg (M/V Charles H. Gilbert Cruise 34): An area of persistently occur- ring skipjack tuna was found off Cape Kaea, Lanai, du
. Commercial fisheries review. Fisheries; Fish trade. November 1957 COMMERCIAL FISHERIES REVIEW 27 being tagged. Others taken a few days after tagging showed evidence of promptheal- ing, with formation of scar tissue around the dart head and the external wound. Fi- nally, wounds on fish out 2 or 3 months are invariably healed in a manner suggesting that the tag will remain on the fish indefinitely. ***** AREA OF PERSISTENTLY OCCURRING SKIPJACK TUNA FOUND IN HAWAI- IAN WATERg (M/V Charles H. Gilbert Cruise 34): An area of persistently occur- ring skipjack tuna was found off Cape Kaea, Lanai, during a June 21-August 21,1957, cruise of the research vessel Charles H. Gilbert of the Bureau's Pacific Oceanic Fishery Investigations. To determine the distribution of skipjack in this area and the consistency of their appearance, a chumming pattern was developed and carried out during the cruise. At each station made in the vicinity of Cape Kaea bait fish. FIG. 1 - MONTHLY ENVIRONMENTAL SURVEY, JUNE, JULY 8, AND AUGUST 1957, CHARLES H. QlLBERT. CRUISE 34. FIG. 2 - CHUMMING PATTERN OFF CAPE KAEA, LANAI, CHARLES H. GILBERT. CRUISE 34. were chummed for a 10-minute period and a careful watch was made for surface signs of fish. Skipjack were always raised at station X (see figure 2), usually after only a few minutes of chumming. Chumming at adjacent stations provided results which varied from no fish being raised along the south coast (leg D) and the offshore waters (legs B and C), to fish being raised irregularly along the west coast (leg A). Physical, chemical, and biological data were collected from the area ciround Cape Kaea to determine why fish occur in one locality and not in an adjacent one. In addition, a preliminary study was initiated on a temperature discontinuity which occurred east of Cape Kaea. This discontinuity was almost always present in the area and had a change in temperature of 1 to F. in about a quarter-of-a-mile. Gross examination of the plankton hauls
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