The Helminthological Society of Washington - Peru State College

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134 JOURNAL OF THE HELMINTHOLOGICAL SOCIETY OF WASHINGTON, 66(2), JULY 1999 Figures 1, 2. SEM photomicrographs of Sciadocephalus inegalodiscus Diesing, 1850. 1. Small specimen (entire). 2. Scolex and metascolex. Apical view. wider than strobila, with umbrella-shaped metascolex with borders turned upwards. Scolex enveloped by these borders, comprised of 4 muscular suckers and 1 apical sucker (Figs. 1- 3). Scolex and metascolex 1.4-2.2 (1.9) long X 2.8-2.9 (2.8) wide; suckers 0.385-0.515 (0.454) in diameter and apical sucker 0.115 in diameter. Neck inconspicuous. Immature proglottids wider than long, 0.1 X 1.8 to 0.2 X 1.4 (0.2 X 1.6). Gravid proglottids wider than long, 0.3 X 1.8 to 0.9 X 1.4 (0.6 X 1.7). Last few proglottids more Figure 3. SEM photomicrograph of the scolex, detail of a sucker and apical sucker of Sciadocephalus inegalodiscus Diesing, 1850. or less rectangular. Genital opening in anterior Vs of proglottid, alternating irregularly. Vagina opening anterior or posterior to cirrus pouch. Vaginal sphincter inconspicuous. Cirrus pouch long and narrow, 0.3 X 0.1 to 0.4 X 0.1 (0.4 X 0.1). Cirrus pouch about 0.2 times width of proglottid. Testes about 26, medullar, 0.07 in diameter, arranged in 2 distinct fields, separated by ovary. Ovary medullar, compact, indistinctly bilobate, central, 0.415-0.465 (0.442) in width. Vitellaria medullar, diffuse, not forming follicles, occupying lateral body region. Uterus medullar, rapidly resolving into capsules containing varying numbers of eggs. In last segments, some capsules not containing eggs and modified in form (Figs. 4, 7). Some capsules passing from medulla to cortex, opening through tegument. Eggs not containing developed embryos. Hexacanth hooks not observed. Musculature with numerous isolated longitudinal fibers, distributed throughout entire proglottid. Demarcation between medulla and cortex indicated by delicate transverse fibers situated next to longitudinal fibers (Fig. 6). Tegument of strobila with 2-4 longitudinal sulci (Fig. 5). Taxonomic summary HOST: Cichla monoculus Spix, 1831 (Cichlidae), "tucunare." LOCALITY: Parana River, region of Porto Rico, State of Parana, Brazil. SITE OF INFECTION: Intestine. Copyright © 2011, The Helminthological Society of Washington
REGO ET AL.—SC/ADOCEPHALUS MEGALODISCUS IN C1CHLA MONOCULUS 135 Vit ex - tf ex Vit eoc Figures 4—7. Sciadocephalus megalodiscus Diesing, 1850. Scales in millimeters (mm). 4. Entire specimen; note that most proglottids are gravid. 5. Small specimen; note small sulci present on tegument (tc). 6. Cross-section of gravid proglottid, showing vitellaria (Vit), excretory canal (ex), testes (t), transverse fibers (tf), uterus (u), ovary (ov), longitudinal fibers (If). 7. Gravid proglottid; note some ovigerous capsules with eggs and others without eggs and modified; empty ovigerous capsule (eoc), cirrus pouch (cp). Copyright © 2011, The Helminthological Society of Washington
Page 1 and 2: Volume 66 JOURNAL of The Helminthol
Page 3 and 4: J. Helminthol. Soc. Wash. 66(2), 19
Page 5 and 6: FIORILLO AND FONT—SEASONAL DYNAMI
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
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Page 39 and 40: REGO ET AL.—SC/ADOCEPHALUS MEGALO
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
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Page 69 and 70: 11 Figure 11. Longitudinal section
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Page 77 and 78: SM ,v 20 Figures 20-22. Section of
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BURSEY AND GOLDBERG—SKRJAB1NODON
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BURSEY AND GOLDBERG—PARAPHARYNGOD
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Egg s 83-95 88-96 75-90 109-119 90-
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BURSEY AND GOLDBERG—PARAPHARYNGOD
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J. Helminthol. Soc. Wash. 66(2), 19
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PURNOMO AND EA.NGS—PARAOCHOTERENE
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PURNOMO AND BANGS—PARAOCHOTERENEL
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PURNOMO AND BANGS—PARAOCHOTERENEL
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RESEARCH NOTES 195 Table 1. Prevale
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RESEARCH NOTES 197 live feature not
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RESEARCH NOTES 199 and an I- or Y-s
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201 genes as an additional source o
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RESEARCH NOTES 203 Tenebrio molitar
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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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