Corynosoma strumosum
Description
Corynosoma strumosum (Rudolphi, 1802)
D e s c r i p t i o n (figs, 1, A; 2, E; table 2).
General. Small acanthocephalans, males and females similar in size and shape, females slightly larger. Trunk 3,800 –6,240 × 933–1,600. Trunk anterior part widened in the form of ellipsoidal swelling, with small spines extended ventrally more than dorsally. Length of spines increasing from apical (32–38) to median (44–61) and decreasing posteriorly (25–36). Trunk posterior part narrowest at middle, slightly dilated at posterior end. Genital spines present or absent. Proboscis 450–620 × 260–290, almost cylindrical, with widening in its posterior third. Proboscis with 17–19 longitudinal rows of 10–11 hooks each. First 6–7 hooks large, with simple roots directed posteriorly. Next 1–2 hooks transitional, with small roots in the shape of an inverted Y (fig. 2, E). Proximal 3–4 hooks spiniform, with simple roots directed anteriorly. Largest hooks are 6th or 7th. Proboscis receptacle double-walled. Lemnisci broad, leaf-shaped, shorter than proboscis receptacle. Neck truncated cone, 211–620 long, often retracted into foretrunk. Reproductive system in narrow posterior part of trunk.
Remarks. Corynosoma strumosum was initially described by Rudolphi (1802) from harbor seal (Phoca vitulina Linnaeus). This species was also reported in various marine mammals, terrestrial carnivores and aquatic birds throughout the Arctic, Pacific and Atlantic Oceans, and in the Caspian Sea (Delyamure, 1955; Dailey & Brownell, 1972; Shults, 1982; Yurakhno, 1998; Nickol et al., 2002; Ionita et al., 2008; Amin et al., 2011). Morphologically, our specimens of C. strumosum are consistent with the original description of the species. Amphipods are known to be intermediate hosts for C. strumosum (Petrochenko, 1958; Atrashkevich, 2008); more than 30 species of fishes and a few reptiles, and experimentally infected amphibians and reptiles have been reported as paratenic hosts (Dubinin, 1949; Moles, 1982; Skorobrechova et al., 2012).
Notes
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Linked records
Additional details
Identifiers
Related works
- Cites
- Figure: 10.5281/zenodo.6454661 (DOI)
- Is part of
- Journal article: 10.2478/vzoo-2018-0019 (DOI)
- Journal article: http://zenodo.org/record/6454655 (URL)
- Journal article: http://publication.plazi.org/id/FFF82B2F2E21FFA3FFDD8B67FF8CFF9B (URL)
- Is source of
- https://sibils.text-analytics.ch/search/collections/plazi/03C153572E25FFA5FF7B8F95FD40FE11 (URL)
Biodiversity
- Family
- Polymorphidae
- Genus
- Corynosoma
- Kingdom
- Animalia
- Order
- Polymorphida
- Phylum
- Acanthocephala
- Scientific name authorship
- Rudolphi
- Species
- strumosum
- Taxon rank
- species
- Taxonomic concept label
- Corynosoma strumosum (Rudolphi, 1802) sec. Lisitsyna, Kudlai, Spraker & Kuzmina, 2018
References
- Rudolphi, C. A. 1802. Fortsetzung der Beobachtungen uber die Eingeweidewurmer. Archiv fur Zoologie und Zootomie von Wiedemanns, 2, 1 - 67.
- Delyamure, S. L. 1955. Helminthofauna of marine mammals (ecology and phylogeny). Izdatelstvo AN USSR, Moscow, 1 - 518 [In Russian.]
- Dailey, M. D., Brownell, R. L. J. 1972. A checklist of mammal parasites. In: Ridgeway, S. H., Springfield, C. C. T., eds. Mammals of the Sea: Biology and Medicine, 528 - 589.
- Shults, L. M. 1982. Helminths of the spotted seal, Phoca largha, from the Bering Sea. Journal of Wildlife Diseases, 18, 59 - 62.
- Yurakhno, M. V. 1998. Diseases and Parasites. In: Sokolov, V. E, Aristov, A. A., Lisitzina, T. U., eds. Northern fur seal: systematic, morphology, ecology, behavior. Nauka, Moscow, 810 - 899 [In Russian.]
- Nickol, B. B., Helle, E., Valtonen, E. T. 2002. Corynosoma magdaleni in gray seals from the Gulf of Bothnia, with emended descriptions of Corynosoma strumosum and Corynosoma magdaleni. Journal of Parasitology, 88, 1222 - 1229.
- Ionita, M., Varela, M. G., Lyons, E. T., Spraker, T. R., Tolliver, S. C. 2008. Hookworms (Uncinaria lucasi) and acanthocephalans (Corynosoma spp. and Bolbosoma spp.) found in dead northern fur seals (Callorhinus ursinus) on St. Paul Island, Alaska in 2007. Parasitology Research, 103, 1025 - 1029.
- Amin, O. M., Richard, A. H., Halajian, A., El-Naggar, A. M. 2011. The morphology of an unique population of Corynosoma strumosum (Acanthocephala, Polymorphidae) from the Caspian seal, Pusa caspica, in the land-locked Caspian Sea using SEM, with special notes on histopathology. Acta Parasitologica, 56, 438 - 445.
- Petrochenko, V. I. 1958. Acanthocephala of Domestic and Wild Animals. Izdatelstvo NAS of USSR Moscow ,, 1 - 458 [In Russian.]
- Atrashkevich, G. I. 2008. Spiny-headed worms genus of Corynosoma Luhe, 1904 (Acanthocephala: Polymorphidae) in the Okhotsk sea and parasitic system with dominant species of C. strumosum (Rudolphi, 1819). In: Proceedings of the IV Congress of the Russian Society of Parasitologists, Russian Academy of Sciences, 20 - 25, October, 2008, Zoological Institute RAS, St. Petersburg " Parasitology in XXI century - problems, methods, solutions ", 1, 38 - 42 [In Russian.]
- Dubinin, V. B. 1949. Experimental studies on the life-cycles of some parasitic worms of animals in the Volga delta. Parazitologischeskii Sbornik. Zoologischeskii Institut Akademii Nauk SSSR, Leningrad, 11, 156 - 160 [In Russian.]
- Moles, A. 1982. Parasite-host records of Alaskan fisheries. In: National Atmospheric and Oceanic Agency, Washington, D. C. National Marine Fisheries Special Scientific Report No. 760, 1 - 41.
- Skorobrechova, E. M., Nikishin, V. P., Lisitsyna, O. I. 2012. Structure of capsule around acanthocephalan Corynosoma strumosum from uncommon paratenic hosts - lizards of two species. Parasitology Research, 108, 459 - 467.