. The life of inland waters; an elementary text book of fresh-water biology for American students. Freshwater biology. 176 Aquatic Organisms leeches will make a feast of vertebrate blood, if occasion offers, or in absence of this will swallow a few worms instead. The mouth of leeches is adapted for sucking, in some cases it is armed for making punctures, as well: hence the food is either more or less fluid substances like blood or the decomposing bodies of dead animals, or else it consists of the soft bodies of animals small enough to be swallowed whole. The eggs of leeches are cared for in va
. The life of inland waters; an elementary text book of fresh-water biology for American students. Freshwater biology. 176 Aquatic Organisms leeches will make a feast of vertebrate blood, if occasion offers, or in absence of this will swallow a few worms instead. The mouth of leeches is adapted for sucking, in some cases it is armed for making punctures, as well: hence the food is either more or less fluid substances like blood or the decomposing bodies of dead animals, or else it consists of the soft bodies of animals small enough to be swallowed whole. The eggs of leeches are cared for in various ways: commonly one finds certain of them in minute packets, attached to stones. Others (Hcemopis, etc.) are stored in larger capsules and hidden amid submerged trash. Oth- ers are sheltered beneath the body of the parent, and the young are brooded there for a time after hatching, as shown in the accompanying figure. Nachtrieb (12) states that they are so carried "until the young are able to move about actively and find a host for a meal of ; Leeches are doubtless fed upon by many carnivorous animals. They are commonly reported to be taken freely by the trout in Adirondack waters. In Bald Moun- tain Pond they swim abundantly in the open Fig. 84. A clepsine leech {Placobdella rugosa), over- turned and showing the brood of young protected beneath the body. (From the senior author's General Biology).. 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 Needham, James G. (James George), 1868-1956; Lloyd, John Thomas, 1884- joint author. Ithaca,N. Y. , The Comstock Publishing Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1915
