. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. THE JACK MACKEREL, TRACHURUS SYMMETRICUS: A REVIEW OF THE CALIFORNIA FISHERY AND OF CURRENT BIOLOGICAL KNOWLEDGE1 By PHILM. ROEDEL Bureau of Marine Fisheries, California Department of Fish and Game INTRODUCTION The jack mackerel, Traehurus symmetricus (Ayres), a member of family Carangidae, occurs along the Pacific Coasl of North America from British Columbia south at least into the southern half of Baja California, Mexico. It has bee
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. THE JACK MACKEREL, TRACHURUS SYMMETRICUS: A REVIEW OF THE CALIFORNIA FISHERY AND OF CURRENT BIOLOGICAL KNOWLEDGE1 By PHILM. ROEDEL Bureau of Marine Fisheries, California Department of Fish and Game INTRODUCTION The jack mackerel, Traehurus symmetricus (Ayres), a member of family Carangidae, occurs along the Pacific Coasl of North America from British Columbia south at least into the southern half of Baja California, Mexico. It has been captured nearly 500 miles off the coasl of California. Despite this extensive range, the fishing grounds are con fined largely to inshore waters from central California south to 11n- Mexican boundary. By far the largest tonnages are taken in Southern California waters, and catches are most unusual north of Monterey Bay. Small quantities have been taken off the Oregon coast, where the fish are said to occur regularly in the summer (Cleaver, 1951, p. 29). The fishery is prosecuted almost entirely by boats using roundhaul gear, particularly purse seines. Virtually the entire catch is canned. Until 1947, this fish was of minor commercial importance. In 19-47 it emerged as a major variety, and has remained among the leaders since that year. Its sudden rise and continued high rank are attributable in a large part to the series of poor seasons experienced by the sardine and Pacific mackerel fisheries (Sardinops caerulea and Pneumatophorus diego). (The present status of these fisheries is discussed by Clark, 1952, and Fitch, 1952.) In the earlier years, the seiner fleet sought sardines primarily and Pacific mackerel when they were available or when the 1 Submitted for publication, June, FIGURE 1. The jack mackerel, Traehurus symmefricus (45). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration
Size: 2666px × 938px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorcaliforniadeptoffishandgame, bookauthorcaliforniafish
