. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. 460 MOSQUITOES great tidal salt marshes of the New Jersey coast were the various species of killifish. These fish abound wherever the marshes are constantly flooded and push into places where there is barely enough water to cover them, and are so active in destroying mos-. FiG. 207. One of the first places to clean up in a mosquito campaign. A favorite breeding place for such annoying or dangerous species as the yellow fever mosquito, Aedes calopus, the house mosquitoes, Culex pipiens and C. guinquefas-
. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. 460 MOSQUITOES great tidal salt marshes of the New Jersey coast were the various species of killifish. These fish abound wherever the marshes are constantly flooded and push into places where there is barely enough water to cover them, and are so active in destroying mos-. FiG. 207. One of the first places to clean up in a mosquito campaign. A favorite breeding place for such annoying or dangerous species as the yellow fever mosquito, Aedes calopus, the house mosquitoes, Culex pipiens and C. guinquefas- ciatus, Anopheles quadrimaculatus, and others. quito larvse that the latter can exist only in high-lying or shut-in portions of the marsh over which the tide only occasionally sweeps and to which the " killies " do not penetrate. Knowing the value of killifish as destroyers of larvae, the problem of preventing the marshes from producing countless mosquitoes resolves it- self into so draining that the water on it either will be drawn off at every low tide or will be constantly stocked with fish. A number of workers have recently remarked on the folly of oiling pools which could be stocked with fish, since the oil kills the natural enemies of the larvae and is not permanent. Instead it is urged that fish be propagated in such pools. The water weeds, however, should be removed and overhanging plants cut back so that the fish can operate freely in their pursuit of larvse. In the case of swamps it is suggested that a permanent pond be constructed at the lowest level and stocked with fish, and the swamp drained into the pond. A fresh-water fish of the same family as the killifish (Cyprino- dontidffi) known as " millions " (Girardinm pmciloides) has been. 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 origina
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Keywords: ., book, bookcentury1900, bookdecade1910, bookpublishernewyorkjwiley
