Journal
JOURNAL OF PARASITOLOGY
Volume 99, Issue 3, Pages 480-486Publisher
AMER SOC PARASITOLOGISTS
DOI: 10.1645/12-11.1
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Funding
- Universidad de Buenos Aires, Argentina [UBACyT 20020090200511, 20020090200529, 20020110100199]
- National Science Foundation PBI [0818696, 0818823]
- EU SYNTHESYS [GB-TAF-2036]
- Division Of Environmental Biology
- Direct For Biological Sciences [0818823] Funding Source: National Science Foundation
- Division Of Environmental Biology
- Direct For Biological Sciences [0818696] Funding Source: National Science Foundation
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The proteocephalidean cestode Harriscolex nathaliae n. sp. (Proteocephalidae: Zygobothriinae) is described from the intestine of the spotted sorubim Pseudoplatystoma corruscans (Spix and Agassiz) (Siluriformes: Pimelodidae) from the Parana River basin in Argentina. This new species differs from the only species of the genus, Harriscolex kaparari (Woodland, 1935), which is a parasite of Pseudoplatystoma tigrinum (Linnaeus) from the Amazon River in Brazil, by its larger scolex (width of 450-750 mu m vs. 305-340 mu m), the position of the vagina in relation to the cirrus sac (anterior and posterior vs. only anterior), an asymmetrical vaginal sphincter, the arrangement of vitelline follicles (1 narrow longitudinal band on each side of the proglottid vs. 2 pairs of wide longitudinal bands on dorsal and ventral sides), and a higher number of uterine diverticula (22-45 vs. 16-20). Harriscolex nathaliae is covered with 2 types of microtriches, acicular filitriches and gladiate spinitriches.
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