. Cold-blooded vertebrates: part I. Fishes. Fishes; Amphibians; Reptiles. MIGRATIONS supply and that the migrations are made in order to obtain this food, although other factors, not well understood, may have an influence also. Bluefishes migrate in pursuit of smaller migrating fishes such as the menhaden and herring, and their movements depend on the movements of their prey. As wolves travel. Fig. 46. Bluefish, Pomatomus saltatrix, a wanton destroyer of other fish. Courtesy Bureau of Fisheries in packs when hungry, these predatory fishes travel in schools and display a lust to kill which has
. Cold-blooded vertebrates: part I. Fishes. Fishes; Amphibians; Reptiles. MIGRATIONS supply and that the migrations are made in order to obtain this food, although other factors, not well understood, may have an influence also. Bluefishes migrate in pursuit of smaller migrating fishes such as the menhaden and herring, and their movements depend on the movements of their prey. As wolves travel. Fig. 46. Bluefish, Pomatomus saltatrix, a wanton destroyer of other fish. Courtesy Bureau of Fisheries in packs when hungry, these predatory fishes travel in schools and display a lust to kill which has no equal in the fish kingdom. It is reported that they spare nothing, but will go on killing for killing's sake long after they have eaten all they can hold. Fishermen take advantage of this persistence in destruction and when they encounter schools of menhaden and herring they make preparations for catching the bluefishes which are almost sure to be in pursuit. The Spanish mackerel's movements are likewise de- termined by those of its prey. However, as far as my observations permit me to judge, the schools of Spanish mackerel follow great shoals of crustaceans, principally small shrimps, rather than schools of fish. Even such solitary fishes as the sharks and skates appear to make rather definite migrations, for reasons not well understood, but probably in search of rich feeding grounds. An investigator stationed at Cape Lookout for several years was able to predict very precisely, that is, [ 1^9]. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hildebrand, Samuel F. (Samuel Frederick), 1883-1949; Gilmore, Charles Whitney, 1874-; Cochran, Doris M. (Doris Mable), 1898-1968. [New York, Smithsonian institution series, inc. ]
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Keywords: ., bookcentury1900, booksubj, booksubjectfishes, booksubjectreptiles
