Special Scientific Report: Fisheries, Números 525-540National Marine Fisheries Service, 1965 |
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Página 7
... Plankton tows taken at monthly intervals at the CalCOFI stations off the coasts of Califor- nia and Baja California reveal the following seasonal occurrence for the 105,776 jack mackerel larvae taken in the 7 - year period 1951-57 ...
... Plankton tows taken at monthly intervals at the CalCOFI stations off the coasts of Califor- nia and Baja California reveal the following seasonal occurrence for the 105,776 jack mackerel larvae taken in the 7 - year period 1951-57 ...
Página 9
... plankton nets . This selection bias is discussed in detail by Farris ( 1961 ) . The data indicate that , unless the mortality of these very small larvae is different from that of the larger ones , the nets retain about 15 percent of 2.0 ...
... plankton nets . This selection bias is discussed in detail by Farris ( 1961 ) . The data indicate that , unless the mortality of these very small larvae is different from that of the larger ones , the nets retain about 15 percent of 2.0 ...
Página 11
Fisheries. The numbers of larvae larger than 7.75 mm . taken by plankton nets are undoubtedly affected by " net dodging . " Most other larval fish taken with jack mackerel in plankton nets show an increase in the ratio of night - caught ...
Fisheries. The numbers of larvae larger than 7.75 mm . taken by plankton nets are undoubtedly affected by " net dodging . " Most other larval fish taken with jack mackerel in plankton nets show an increase in the ratio of night - caught ...
Página 5
... plankton , bottom fauna .... The joint study of the fisheries and limnology of Lake Erie is proving most valu- able to the environmental unit and the Lake Erie staff in demonstrating better the effects of the increasing pollution of the ...
... plankton , bottom fauna .... The joint study of the fisheries and limnology of Lake Erie is proving most valu- able to the environmental unit and the Lake Erie staff in demonstrating better the effects of the increasing pollution of the ...
Página 9
... plankton ( wet , dry , and ash weights ) . Some limited discussion of possible significance of records is offered . BEETON , MOFFETT . 1964. Lake Michigan chemical data , 1954- 55 , 1960-61 . U.S. Fish Wildl . Serv . , Data Rep . 6 , 3 ...
... plankton ( wet , dry , and ash weights ) . Some limited discussion of possible significance of records is offered . BEETON , MOFFETT . 1964. Lake Michigan chemical data , 1954- 55 , 1960-61 . U.S. Fish Wildl . Serv . , Data Rep . 6 , 3 ...
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Términos y frases comunes
3-check abundance Amer American shad anchovy larvae Atlantic Area Atlantic menhaden August Baja California ber Occur ber rences taken blooms breve brevis Bull Bureau of Commercial central Baja California Chesapeake Bay coast Commercial Fisheries concentrations cruise dead fish dinoflagellates distribution eggs estimate females fin rays FISH AND WILDLIFE Florida fork length fur seals growth Gulf Gymnodinium jack mackerel July June kill Lake Erie lake trout larvae Little Kitoi Lake males migration mortality Number Number Number Number Percent offshore OOSTEN organisms outbreaks Paul Island pelagic Petersen tag phosphorus plankton population Pribilof Islands pups purse seine purse seine catches red tide red-tide rences taken rences River Rock Island Dam Ruth Lake salinity salmon sardine sea lamprey season smolts sockeye spawning Spec species Station lines striped bass surface survival taken rences taken temperature tion toxic U.S. Fish Wildl zooplankton
Pasajes populares
Página 71 - UNITED STATES DEPARTMENT OF THE INTERIOR FISH AND WILDLIFE SERVICE UNITED STATES DEPARTMENT OF THE INTERIOR, Fred A.
Página 4 - US DEPARTMENT OF THE INTERIOR, FISH AND WILDLIFE SERVICE, BUREAU OF COMMERCIAL FISHERIES, Washington, DC, June 13, 1962.
Página 10 - Hydr., 36: 57-130. 1941. Age and growth of the rock bass, Ambloplites rupestris (Rafinesque), in Nebish Lake, Wisconsin.
Página 7 - This project covers the expenses of the two American members of the International Board of Inquiry for the Great Lakes Fisheries...
Página 7 - An investigation of the relative efficiencies of natural and artificial propagation of sockeye salmon (Oncorhynchus nerka) at Cultus Lake, British Columbia.
Página 57 - No. 23, 26 pp. 1948. A record of pilchard eggs and larvae collected during surveys made in 1939 to 1941. US Dept.
Página 60 - I would appreciate it. (The information referred to follows :) DEPARTMENT OF THE INTERIOR, FISH AND WILDLIFE SERVICE, BUREAU OF COMMERCIAL FISHERIES, Washington, DC Hon.