The book The Fishes of Lake Valencia Venezuela was written by author A S Arthur Sperry Pearse Here you can read free online of The Fishes of Lake Valencia Venezuela book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Fishes of Lake Valencia Venezuela a good or bad book?
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PEARSE FISHES OF LAKE VALENCIA, VENEZUELA 37 TREMATODE CYST No. 3 On July 27, 1918, a mataguaro, Crenicichla geayi Pellegrin, which had several trematode cysts in its fins and beneath 'its skin, was caught in the Rio Castano. The cysts -all had the form shown in Figure 12. The cyst wall was thick but had no definite outer boundary the fibers composing- it blending gradually into the surrounding tissues. There was much more pigment about the cysts in the fins than about those beneath the skin. T...he larva within the cyst measured . 28 Jby . 16 mm. ; the cyst about . 6 by . 5 mm. The diameter of the oral sucker is about one-eighth and the acetabulum somewhat more than one-fourth the length of the body. This cyst was not found in mataguaros from Lake Valencia. It was abundant in two mataguaros caught in the Rio Castano, July 27. One specimen had the cysts distributed about as follows: dorsal 60, caudal 30, anal 60, pelvic 90, pectoral 60. The other had none in the fijis but carried about forty in its skin.
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