Document Detail

Two new species of Paraorygmatobothrium Ruhnke, 1994 (Cestoda: Tetraphyllidea) from the carcharhinid shark Carcharhinus cf. dussumieri (M?ller & Henle) in the Persian Gulf.
MedLine Citation:
PMID:  20401579     Owner:  NLM     Status:  MEDLINE    
New collections of tapeworms from the carcharhinid shark species Carcharhinus cf. dussumieri (M?ller & Henle), the whitecheek shark, in the Persian Gulf have yielded two new species belonging to the tetraphyllidean genus Paraorygmatobothrium Ruhnke, 1994 (Phyllobothriidae). Both new species resemble the subset of Paraorygmatobothrium species that bear gongylate columnar spinitriches, rather than serrate gladiate spinitriches, on their distal bothridial surfaces. In combination, their shorter lengths, smaller number of testes and smaller bothridial apical suckers distinguish both Paraorygmatobothrium mobedii n. sp. and Paraorygmatobothrium sinuspersicense n. sp. from all but two of their congeners. They conspicuously differ from P. exiguum (Yamaguti, 1935), in that the spinitriches on their distal surfaces are not arranged on 'bumps' and from P. filiforme (Yamaguti, 1952) in their possession of fewer proglottids. The two new species differ from one another in cirrus-sac shape, testicular shape and arrangement, and vitelline follicle arrangement (i.e. 2 vs 4-6 follicles in each lateral band). In addition, statistically significant differences were seen in terminal proglottid length, ovarian length and apical sucker diameter. This brings the total number of species of Paraorygmatobothrium to 14, and extends the number of carcharhiniform host genera known to host members of the genus to seven. This is also the first description of tapeworms from an elasmobranch in the Persian Gulf.
M Malek; J N Caira; M Haseli
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2010-04-17
Journal Detail:
Title:  Systematic parasitology     Volume:  76     ISSN:  1573-5192     ISO Abbreviation:  Syst. Parasitol.     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-04-19     Completed Date:  2010-06-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8111384     Medline TA:  Syst Parasitol     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  59-68     Citation Subset:  IM    
Department of Animal Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran.
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MeSH Terms
Cestoda / anatomy & histology,  classification*,  isolation & purification*
Elasmobranchii / parasitology*
Indian Ocean
Microscopy, Electron, Scanning

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