Comparative Parasitology 67(1) 2000 - Peru State College

More documents

Recommendations

Info

44 COMPARATIVE PARASITOLOGY, <strong>67</strong>(1), JANUARY <strong>2000</strong> new genus is described below to accommodate P. golvani. Pararaosentis n. gen. DIAGNOSIS: Quadrigyridae, Pallisentinae. Trunk short with hypodermal nuclei and anterior constriction containing 1 set of minute spines arranged in a few complete circles, most anteriorly. Proboscis short, with 4 circles of small hooks gradually decreasing in length posteriorly. Proboscis receptacle single-walled, with large cerebral ganglion at its base. Male reproductive system compacted in posterior region. Testes short, robust, contiguous. Cement gland syncytial, small with few giant nuclei. Cement reservoir and Saefftigen's pouch present. Parasites of freshwater fishes in Africa. Taxonomic summary TYPE SPECIES: Pararaosentis golvani (Troncy and Vassiliades, 1973) n. comb. (=Pallisentis golvani Troncy and Vassiliades, 1973; Pallisentis tetraodontae Troncy, 1978). Remarks The type species does not belong in the genus Pallisentis because of its anterior trunk constriction, the presence of only 1 set of spines anteriorly, the noncylindrical form of its testes and cement gland, and its occurrence in African, not Asian, fishes. Furthermore, the trunk is short and lacks the anterior swelling of the long slender specimens of Pallisentis. The new genus is closest to the genus Raosentis Datta, 1947. In Raosentis, however, the trunk is not constricted anteriorly, and the proboscis hooks in the anterior 2 circles are longer and stouter than the hooks in posterior 2 circles and are separated from them by an unarmed area. The characters on which Troncy (1978) based his assignment of P. tetraodontae as a subspecies of P. golvani are not significant enough to justify a subspecific status, and P. tetraodontae is herein relegated to a synonym of P. golvani. Pallisentis (Brevitritospinus) vietnamensis sp. n. (Figs. 1-9) Description GENERAL: Shared characters (proboscis and hooks, proboscis receptable, trunk, and lemnisci) larger in females than in males (see Table 2 for measurements). Trunk curved ventrad, medium in length, slender, cylindrical with anterior Copyright © 2011, The Helminthological Society of Washington swelling (Figs. 1, 5) and 83-137 long X 21-62 wide hypodermic nuclei in anterior half of trunk (0—5), posterior half (1—4), and in apical organ of proboscis (3). Proboscis truncated, wider than long, with conspicuous apical organ (Fig. 3). Proboscis hooks with shallow pluglike roots, in 4 circles of 10 hooks each. Hooks in first circle largest, hooks in second circle slightly smaller, hooks in third circle about half as long as hooks in second circle, hooks in fourth circle smallest (Figs. 3, 4). Neck very short (Figs. 3, 5, 9). Proboscis receptacle 5-6 times as long as proboscis, single-walled, with cerebral ganglion near its base (Figs. 1, 5). Lemnisci long, tubular, unequal, and with 1 giant nucleus each (Figs. 1, 5). Collar spines triangular, in 18—22 closely spaced circles beginning just behind a spineless area on anterior trunk (often interpreted as the neck) and overlapping and extending slightly posterior to the posterior half of the proboscis receptacle (Figs. 1, 5). Trunk spines triangular (Figs. 7, 8), in considerably more widely spaced circles extending to posterior end of females and to testes in males. Anterior trunk swelling covered by 17-20 circles of trunk spines. An unspined area separating trunk spines from collar spines (Figs. 1, 5). Unspined areas often occurring in posterior 2-3 circles of collar spines, and up to 5 or 6 times involving 2-6 circles of trunk spines throughout (Figs. 1, 5). Number of trunk spines decreasing to 1 or 2 in posteriormost circles where their size slightly decreases. MALE: Based on 4 specimens. Reproductive system at posterior end of trunk. Testes oblong, contiguous; anterior testis larger than posterior. Cement gland rectangular, syncytial with 7-8 giant nuclei. Cement reservoir branching posteriorly into 2 ducts (Figs. 1, 2). FEMALE: Based on 5 specimens. Reproductive system short, robust with the vaginal complex, uterus, and uterine bell of almost equal length; gonopore subterminal (Fig. 6). Eggs ovoid with concentric shells. Taxonomic summary TYPE HOST: Snake head fish (mullet), Ophiocephalus maculatus (Lacepede, 1802) (Channidae). OTHER HOST: ca the be (Vietnamese name) Acanthorhodeus fortunensis (Cyprinidae) (only 1 juvenile found by Moravec and Sey, 1989). SITE OF INFECTION: Upper intestine.
AMIN ET AL.—REVISION OF THE GENUS PALLISENTIS 45 Figures 1-8. Pallisentis vietnamensis sp. n. 1. Holotype male (note gaps in distribution of trunk spines). 2. Reproductive system of holotype male. 3. Proboscis of a paratype female (note 3 giant nuclei in apical organ). 4. One row of proboscis hooks from proboscis in Fig. 3. 5. Anterior end of a paratype female (note gaps in the distribution of collar and trunk spines). 6. Reproductive system of allotype female (note balloon-shaped vaginal gland and unripe egg). 7-8. Side and en face views of trunk spines from paratype in Fig. 5. Copyright © 2011, The Helminthological Society of Washington
Page 1 and 2: January 2000 Number 1 Comparative P
Page 3 and 4: Comp. Parasitol. 67(1). 2000 pp. 1-
Page 5 and 6: children. This means, to most of th
Page 7 and 8: liese, 1995; Marcogliese and Cone,
Page 9 and 10: ural and human alterations of ecosy
Page 11 and 12: ternationally and locally; (2) be i
Page 13 and 14: justify the inclusion of parasites
Page 15 and 16: phy to understand faunal structure
Page 17 and 18: Eucestoda) coincided with the diver
Page 19 and 20: (Hoberg et al., 2000). These studie
Page 21 and 22: serve biodiversity effectively if e
Page 23 and 24: Clayton, D. H., and B. A. Walther.
Page 25 and 26: ham. 1996. Combining data in phylog
Page 27 and 28: schistosomes. Journal of Parasitolo
Page 29 and 30: MARCOGLIESE ET AL.—DIPLOSTOMUM SP
Page 31 and 32: MARCOGLIESE HT f^L.—DIPLOSTOMUM S
Page 33 and 34: MARCOGLIESE ET AL.—DIPLOSTOMUM SP
Page 35 and 36: (Latreille, 1804) Brandt and Ratzeb
Page 37 and 38: COADY AND N]CKOL—PLAGIORHYNCHUS C
Page 39 and 40: COADY AND NICKOL—PLAGIORHYNCHUS C
Page 41 and 42: Threlfall, W. 1965. Helminth parasi
Page 43 and 44: strictive traits that were basicall
Page 45: Cement gland usually small with few
Page 49 and 50: AMIN ET AL.—REVISION OF THE GENUS
Page 51 and 52: 17. Trunk spines appearing continuo
Page 53 and 54: Comp. Parasitol. 67(1), 2000 pp. 51
Page 55 and 56: SMALES—POPOVASTRONGYLUS FROM MARS
Page 57 and 58: tion in a circular buccal capsule.
Page 59 and 60: strongylus pluteus differs from P.
Page 61 and 62: garoo from Kangaroo Island (Smales
Page 63 and 64: BURSEY AND GOLDBERG~-/l/VG7aSTOAM O
Page 65 and 66: Table 2. Parasite list for Onychoda
Page 67 and 68: phibian helminths in Japan. VI. Pse
Page 69 and 70: quadrant and 70° in male, 75° in
Page 71 and 72: increase in the number of cuticular
Page 75 and 76: Figures 1-3. Pseudoterranova decipi
Page 77 and 78: AMIN ET M^.—PSEUDOTERRANOVA IN MA
Page 79 and 80: the gill baskets of some hosts were
Page 81 and 82: KRITSKY ET AL.—DACTYLOGYRIDS FROM
Page 83 and 84: er, and Boeger, 1986, and Amphoclei
Page 85 and 86: 1974); P. laticeps Eigenmann, Lagun
Page 89 and 90: MENDOZA-FRANCO ET SCIADICLEITHRUM F
Page 91 and 92: MENDOZA-FRANCO ET AL.—SCIADICLEIT
Page 93 and 94: MENDOZA-FRANCO ET M^.—SCIADICLEIT
Page 95 and 96: PEREZ-PONCE DE LEON ET AL.—DIGENE
Page 97 and 98:
PEREZ-PONCE DE LEON ET AL.—DIGENE
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Table 2. Continued. Locality* (CNHE
Page 105 and 106:
Table 2. Continued. Locality (CNHE
Page 107 and 108:
casionally prey on tadpoles and ins
Page 109 and 110:
Comp. Parasitol. 67(1), 2000 pp. 10
Page 111 and 112:
Page 113 and 114:
Table 1. Extended. Ctenophorus reti
Page 115 and 116:
Table 2. Extended. 3 '£ Oswaldofil
Page 117 and 118:
Mediorhynchus orientalis Belopol'sk
Page 119 and 120:
4-5 spines each: 25.0-35.0 (31.4).
Page 121 and 122:
Table 1. Previous helminth records
Page 123 and 124:
hyrae from a collection of lizards.
Page 125 and 126:
WEST ET AL.—RESEARCH NOTES 123 Ta
Page 127 and 128:
1987, and from these only a sample
Page 129 and 130:
snakes are part of their diet. The
Page 131 and 132:
Page 133 and 134:
Table 2. Published records of helmi
Page 135 and 136:
, , B. K. Sullivan, and Q. A. Truon
Page 137 and 138:
were larvae. Still, we have conclud
Page 139 and 140:
and their habitats. These low paras
Page 141 and 142:
e eligible for election to office.
Page 143 and 144:
New business. Presentation of notes
Page 145 and 146:
Name: MEMBERSHIP APPLICATION 143 AP
Page 147 and 148:
*Edna M. Buhrer *Mildred A. Doss *A
show all

Comparative Parasitology 67(1) 2000 - Peru State College

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?