. Commercial fisheries review. Fisheries; Fish trade. September 1957 COMMERCIAL FISHERIES REVIEW 45 they return to the tropics to spawn. Thus an ade- quate understanding of the albacore fisheries may involve studies of the albacore population and its environment which encompasses the waters of the Pacific Ocean extending from 50° N. to well south of the equator. Analysis of the landing records from the tuna cannery in American Samoa shows considerable albacoie are now landed each month from the area ranging from thr; equator south to 28° S. latitude between longituces 160° W. and 180° These la
. Commercial fisheries review. Fisheries; Fish trade. September 1957 COMMERCIAL FISHERIES REVIEW 45 they return to the tropics to spawn. Thus an ade- quate understanding of the albacore fisheries may involve studies of the albacore population and its environment which encompasses the waters of the Pacific Ocean extending from 50° N. to well south of the equator. Analysis of the landing records from the tuna cannery in American Samoa shows considerable albacoie are now landed each month from the area ranging from thr; equator south to 28° S. latitude between longituces 160° W. and 180° These land- ings offer an opportunity to determine whether or not and at what season they spawn in this area and arrangements are being made to get a sampling program under way in Samoa. Age and Growth: Albacore growth studies based on hard parts have forced us to conclude that it is not possible to age albacore from their scales or their bones for the following reasons: conducted as a part of the albacore program. They should be of general interest to fishermen and re- search workers in the North Pacific. The opera- tional analysis of the winds was completed and a pilot study was made to determine the feasibility of preparing synoptic charts of the sea surface temperature from the data contained in ship's weather reports. The wind analysis was prepared, with the op- erational requirements of a small research ship or fishing vessel in mind, from unpublished data obtained from the Weather Bureau. The aim was to show the expectationof suitable fishing weath- er in the North Pacific in all areas and months of the year. Sample contour charts for January and July showing the percentage of wind observations of 20 knots or less are illustrated in figure 6. As an example of their use, it may be deter- mined from the July chart that, in the area from. Fig. 6 - Frequency of fishing weatfaer. (1) the rings found on the scales and bones cannot be counted with reasonable consistency; (2) t
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