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The oldest-known metazoan parasite?

Published online by Cambridge University Press:  20 May 2016

Michael G. Bassett
Affiliation:
1Department of Geology, National Museum of Wales, Cardiff, Wales, United Kingdom CF10 3NP
Leonid E. Popov
Affiliation:
1Department of Geology, National Museum of Wales, Cardiff, Wales, United Kingdom CF10 3NP
Lars E. Holmer
Affiliation:
2Uppsala University, Department of Earth Sciences/Palaeobiology, Norbyvägen 22, SE-75236 Uppsala, Sweden

Extract

A unique specimen of the micromorphic fossil lingulate (organophosphatic-shelled) brachiopod Linnarssonia constans Koneva, 1983 from the late Lower Cambrian Shabakty Group of the Malyi Karatau Range in Kazakhstan, Central Asia, preserves evidence of infestation within the mantle cavity by a vermiform animal, leading to the growth of an internal tubular protuberance (Fig. 1) resulting from symbiosis some 520 million years ago. Examples of symbiotic relationships between metazoans in the early Paleozoic are sparse (Conway Morris, 1981, 1990; Conway Morris and Crompton, 1982). Descriptions of a variety of galls and tumorlike swellings in some trilobites extend records back to the Middle Cambrian (Conway Morris, 1990), but their interpretation as traces of endoparasitic activity remains somewhat speculative. Thus galllike swellings on the stems of Silurian echinoderms (Franzen, 1974), vermiform tubes on some early Ordovician dendroid graptolites (Conway Morris, 1990), and various tubes and blisters on graptoloid graptolites (see Bates and Loydell, 2000 for review) are among the hitherto earliest known convincing records of host-parasite relationships within metazoans. Our example reported here predates the oldest of these previous records by approximately 35 to 40 million years, and demonstrates that symbiosis involving complex adaptations (e.g., larval settlement on or within living tissue and exploitation of feeding systems of the host) and codependent life cycles were already established soon after the ‘explosive’ evolutionary radiation of marine metazoans in the early Cambrian. The fossil evidence of infestation on lophophorates is especially sparse, at best. The oldest hitherto undoubted records are both from brachiopods of Devonian age, in the Lower Devonian Emsian Stage of eastern Australia and in the Middle Devonian Givetian Stage of the Holy Cross Mountains in Poland, respectively.

Type
Paleontological Notes
Copyright
Copyright © The Paleontological Society

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References

Bates, D. E. B., and Loydell, D. K. 2000. Parasitism on graptoloid graptolites. Palaeontology, 43:11431151.CrossRefGoogle Scholar
Biernat, G. 1961. Diorygma atrypophilia n.gen. n.spec.—A parasitic organism of Atrypa zonata Schnur. Acta Palaeontologica Polonica, 6:1728.Google Scholar
Briggs, D. E. G., and Morris, S. Conway 1986. Problematica from the Middle Cambrian Burgess Shale of British Columbia, p. 167183. In Hoffman, A. and Nitecki, M. H. (eds.), Problematic Fossil Taxa. Oxford University Press, New York.Google Scholar
Chatterton, B. D. E. 1975. A commensal relationship between a small filter feeding organism and Australian Devonian spiriferid brachiopods. Paleobiology, 1:371378.CrossRefGoogle Scholar
Morris, S. Conway 1977. A new entoproct-like organism from the Burgess Shale of British Columbia. Palaeontology, 20:833845.Google Scholar
Morris, S. Conway 1981. Parasites and the fossil record. Parasitology, 82:489509.CrossRefGoogle Scholar
Morris, S. Conway 1990. Parasitism, p. 376381. In Briggs, D. E. G. and Crowther, P. R. (eds.), Paleobiology: A Synthesis. Blackwell Scientific Publications, Oxford.Google Scholar
Morris, S. Conway, and Bengtson, S. 1994. Cambrian predators: Possible evidence from boreholes. Journal of Paleontology, 68:123.CrossRefGoogle Scholar
Morris, S. Conway, and Crompton, D. W. T. 1982. The origins and evolution of the Acanthocephala. Biological Reviews, 57:85115.CrossRefGoogle Scholar
Emig, C. C. 1979. British and Other Phoronids: Keys and Notes for the Identification of the Species. Synopses of the British Fauna, n. s., 13. Academic Press, London, 57 p.Google Scholar
Franzen, C. 1974. Epizoans on Silurian—Devonian crinoids. Lethaia, 7:287301.CrossRefGoogle Scholar
Funch, P., and Kristensen, R. M. 1995. Cycliophora is a new phylum with affinities to Entoprocta and Ectoprocta. Nature, 378:711714.CrossRefGoogle Scholar
Holmer, L. E., Popov, L. E., Koneva, S. P., and Bassett, M. G. 2001. Cambrian-early Ordovician brachiopods from Malyi Karatau, the western Balkhash region, and Tien Shan, Central Asia. Special Papers in Palaeontology, 65:1180.Google Scholar
Holmer, L. E., Popov, L. E., Koneva, S. P., and Rong, J.-Y. 1997. Early Cambrian Lingulellotreta (Lingulata, Brachiopoda) from South Kazakhstan (Malyi Karatau Range) and South China (Eastern Yunnan). Journal of Paleontology, 71:577584.CrossRefGoogle Scholar
Koneva, S. P. 1983. In Goryansky, V. Yu. and Koneva, S. P., Nizhnekembriiskie bezzamkovye brakhiopody khrebta Malyi Karatau (Yuzhnyy Kazkhstan). [Lower Cambrian inarticulate brachiopods of the Malyi Karatau Range (southern Kazakhstan).] Trudy Instituta Geologii i Geofiziki, Akademiya Nauk SSSR, Sibirskoye Otdelenye, 541:128138.Google Scholar
Linnaeus, C. 1758. Systema Naturae, Tomus 1, Editio Decima, Reformata. Laurentii Salvi, Holmiae [Stockholm], 824 p.Google Scholar
MacKinnon, D., and Biernat, G. 1970. The probable affinities of the trace fossil Diorygma atrypophilia . Lethaia, 3:163172.CrossRefGoogle Scholar
Nielsen, C. 1989. Entoprocts. Synopses of the British Fauna, n. s., 41. Academic Press, London, 131 p.Google Scholar
Nielsen, C. 1995. Animal Evolution: Interrelationships of the Living Phyla. Oxford University Press, New York, 467 p.Google Scholar
Rong, Jia-Yu 1974. Cambrian Brachiopods, p. 113114. In Nanjing Institute of Geology and Palaeontology, Academia Sinica (ed.), Handbook of Palaeontology and Stratigraphy of Southwest China. Science Press, Beijing. (In Chinese)Google Scholar
Rudwick, M. J. S. 1974. Living and Fossil Brachiopods. Hutchinson, London, 199 p.Google Scholar
Todd, J. A., and Taylor, P. D. 1992. The first fossil entoproct. Naturwissenschaften, 79:311314.CrossRefGoogle Scholar
Wallace, P., and Ager, D. V. 1966. Demonstration: Flume experiments to test the hydrodynamic properties of certain spiriferid brachiopods with reference to their supposed life orientation and mode of feeding. Proceedings of the Geological Society of London, 1635:160163.Google Scholar
Wills, M. A. 1993. Miscellanea, p. 555560. In Benton, M. J. (ed.), The Fossil Record 2. Chapman & Hall, London.Google Scholar
Wright, T. S. 1856. Description of two tubicolar animals. Proceedings of the Royal Society of Edinburgh, 1:165167.Google Scholar