Study of Haematractidium scombri in Atlantic Mackerel, Scomber scombrus

1980 ◽  
Vol 37 (5) ◽  
pp. 812-816 ◽  
Author(s):  
Sharon A. MacLean

The prevalence of Haematractidium scombri, an intraerythrocytic protozoan, was studied over a 3-yr period in Atlantic mackerel migrating off Chincoteague, Virginia. In 1974, 24%, in 1975, 42%, and in 1976, 45.3% of the fish examined were infected. Age-2 mackerel (measuring 25–28 cm fork length) were more frequently and more heavily infected than older fish. Adult mackerel from Boothbay Harbor, Maine, and from the bottom overwintering population in the Gulf of Maine also were infected; however, H. scombri was not found in blood smears of age-0 mackerel from Montauk, Long island, New York. Haematractidium was not found in tissue sections, but structures that might be exoerythrocytic stages were seen in kidney and spleen imprints.Key words: Haematractidium, protozoan, mackerel, Scomber

2013 ◽  
Vol 70 (6) ◽  
pp. 1151-1161 ◽  
Author(s):  
Mary K. Radlinski ◽  
Miles A. Sundermeyer ◽  
James J. Bisagni ◽  
Steven X. Cadrin

Abstract Radlinski, M. K., Sundermeyer, M. A., Bisagni, J. J., and Cadrin, S. X. 2013. Spatial and temporal distribution of Atlantic mackerel (Scomber scombrus) along the northeast coast of the United States, 1985–1999. – ICES Journal of Marine Science, 70: 1151–1161. The distribution of Atlantic mackerel (Scomber scombrus) during their spring migration along the Mid-Atlantic Bight and into the Gulf of Maine has historically been associated with spring warming along the continental shelf. Variations in mackerel distributions based on National Marine Fisheries Service spring surveys were compared with variations in sea surface temperature (SST) from satellite remote sensing for the eastern US continental shelf for the period 1985–1999. The mackerel stock was first analysed as a unit, then separated into three size classes to assess differences in distribution among years and individuals of various lengths. Results showed an across-shelf correlation between catch and March SST in the Mid-Atlantic Bight for both the entire population and each size class. Along-shelf catch variations were correlated with SST for large mackerel, but not total stock or smaller size classes. Finally, the distribution of mackerel length in the Gulf of Maine was negatively correlated with March SST in the Great South Channel. Results suggest surface temperature along the northeast continental shelf may be used to predict certain, but not all, aspects of annual migration along the shelf, and that factors in addition to temperature are also important in controlling distributions of Atlantic mackerel.


1974 ◽  
Vol 31 (9) ◽  
pp. 1521-1522 ◽  
Author(s):  
L. S. Parsons ◽  
J. A. Moores

The recapture south of Long Island of an Atlantic mackerel (Scomber scombrus) tagged in Newfoundland waters represents a migration of at least 2259.6 km (1400 miles), the farthest documented migration of mackerel ever reported from the Northwest Atlantic. This recapture supports earlier tagging evidence that overwinter mixing may occur between the northern and southern populations of mackerel.


2000 ◽  
Author(s):  
William C. Schwab ◽  
E.R. Thieler ◽  
J.F. Denny ◽  
W.W. Danforth

Author(s):  
K.Y. McMullen ◽  
L.J. Poppe ◽  
W.W. Danforth ◽  
D.S. Blackwood ◽  
J.D. Schaer ◽  
...  

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