The Helminthological Society of Washington - Peru State College

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.- x ^- -N Figure 6. Longitudinal section of the proximal region of the ovary of P. penetrans, illustrating growth stage of oocytes. GE, gonad epithelium; Nu, nucleolus; N, nucleus. Copyright © 2011, The Helminthological Society of Washington
ENDO ET AL.—ULTRASTRUCTURE OF THE LESION NEMATODE 161 Figure 7. Longitudinal section of oocytes in proximal region of ovary of P. penetrans. An oocyte lies adjacent to the plicated cell membrane of the oviduct (Od). which forms as the egg passes into the columella, merges with the central, fluid-filled channel of the uterus (Fig. 15). The main channel of the uterus continues posteriad as a flattened or collapsed region that extends across the ventral sector of the body, terminating in a postvulvar uterine branch (Figs. 17-19). The uterus opens ventrally through the cuticle-lined vagina and vulva (Fig. 16). Egg passage The traversing of an oocyte or egg through the spermatheca or between columnar cells compresses epithelial cells (Figs. 14, 20 on Foldout 6). In the absence of an egg within the uterus, the abundance of mitochondria and ribosomes and the occurrence of scattered secretory globules suggest that the columnar cells are metabolically active (Fig. 15). In the presence of an egg in the uterine channel, secretory granules occur intracellularly in compressed regions of uterine cells and extracellularly in the space between the surface of the egg and the limiting membrane of the columnar cells (Fig. 20). The accumulated secretory granules appear to contribute to the electron-dense deposits that form the egg shell. These deposits (Figs. 20, 21 on Foldout 6) accumulate on the vitelline layer, which is derived from the oolemma and has a unit membrane-like structure. Just below the vitelline layer is a chitinous layer followed by a lipid layer. The egg shell appears to be separated from the egg cytoplasm by a unit membrane. Tangential sections through the egg revealed Copyright © 2011, The Helminthological Society of Washington
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Volume 66 JOURNAL of The Helminthol
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J. Helminthol. Soc. Wash. 66(2), 19
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FIORILLO AND FONT—SEASONAL DYNAMI
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Page 13 and 14: J. Helminthol. Soc. Wash. 66(2), 19
Page 15 and 16: YABSLEY AND NOBLET—HELMINTHS OF R
Page 19 and 20: MUZZALL—NEMATODES OF YELLOW PERCH
Page 27 and 28: Table 1. Comparison between the Sou
Page 29 and 30: AMIN ET AL.—PLAGIORHYNCHUS IN SOU
Page 31 and 32: AMIN ET M_.—PLAGIORHYNCHUS IN SOU
Page 33 and 34: AMIN ET AL.—PLAGIORHYNCHUS IN SOU
Page 37 and 38: REGO ET AL.—SC/ADOCEPHALUS MEGALO
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Page 41 and 42: KRITSKY AND KULO—MONOGENEANS FROM
Page 49 and 50: SCHOLZ ET AL.—REDESCRIPTION OF PS
Page 51 and 52: SCHOLZ ET AL.—REDHSCRIPTION OF PS
Page 59 and 60: A ENDO ET AL.—ULTRASTRUCTURE OF T
Page 61 and 62: 158 JOURNAL OF THE HELMINTHOLOGICAL
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Page 69 and 70: 11 Figure 11. Longitudinal section
Page 71 and 72: ENDO ET AL.—ULTRASTRUCTURE OF THE
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Page 77 and 78: SM ,v 20 Figures 20-22. Section of
Page 85 and 86: BURSEY AND GOLDBERG—SKRJABINODON
Page 87 and 88: BURSEY AND GOLDBERG—SKRJAB1NODON
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Page 91 and 92: Egg s 83-95 88-96 75-90 109-119 90-
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Page 97 and 98: PURNOMO AND EA.NGS—PARAOCHOTERENE
Page 99 and 100: PURNOMO AND BANGS—PARAOCHOTERENEL
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Page 103 and 104: RESEARCH NOTES 195 Table 1. Prevale
Page 105 and 106: RESEARCH NOTES 197 live feature not
Page 107 and 108: RESEARCH NOTES 199 and an I- or Y-s
Page 109 and 110: 201 genes as an additional source o
Page 111 and 112: RESEARCH NOTES 203 Tenebrio molitar
Page 113 and 114: RESEARCH NOTES 205 rat intestine (M
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RESEARCH NOTES 207 Table 1. Helmint
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J. Helminthol. Soc. Wash. 662, 1999
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INDEX 215 Mastacembelidae, 52 Masta
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APPLICATION FOR MEMBERSHIP in the H
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*Edna M. Buhrer *Mildred A. Doss *
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