. Animal parasites and parasitic diseases. Domestic animals; Veterinary medicine. 136 PARASITOLOGY. ACANTHOCEPHALA (Acanthos—thom) (Cephale—head). This order belongs to the class Nemathelmintha and includes a group of parasites that are round in shape but are not provided with a digestive tract as the order Nematoda; they obtain nourishment by absorption of digested nutrients from the intestinal tract of the host; there are complete sexes, male and female; the cephalic (head) extemity is provided with a globe-shaped proboscis armed with six rows of booklets by which means it holds on to the mu
. Animal parasites and parasitic diseases. Domestic animals; Veterinary medicine. 136 PARASITOLOGY. ACANTHOCEPHALA (Acanthos—thom) (Cephale—head). This order belongs to the class Nemathelmintha and includes a group of parasites that are round in shape but are not provided with a digestive tract as the order Nematoda; they obtain nourishment by absorption of digested nutrients from the intestinal tract of the host; there are complete sexes, male and female; the cephalic (head) extemity is provided with a globe-shaped proboscis armed with six rows of booklets by which means it holds on to the mucous membrane; it includes the genus Echinorhynchus, species of which infest the small intestines of the dog, others infest birds and still another, the most im- portant, infests the hog. (Echinos—spined) Echinorhynchus Gigas (Rhynchus—proboscis) (Gigas—giant). Distribution.—Very common in the United States ; also found in Europe. Description .-Round in shape, about two- thirds the calibre of a lead pencil, with transverse markings. Milk white in color; the cephalic extrem- i t y t ermin ate s Fig:. 57—EcHiNORHYNCHUS GigAs, Female, abruptly and is pro- a. Globe-shaped proboscis, armed with six rows of booklets. b, Caudal that vided with a globe- shaped proboscis is armed with six rows of booklets irregularly. 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 Kaupp, B. F. (Benjamin Franklyn), 1874-. Chicago, A. Eger
Size: 1497px × 1670px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectdomesti, bookyear1910
