Abstract
Two new species of Camallanus are described from Australian freshwater turtles. Camallanus beveridgei sp. nov. is reported from Elseya dentata in Northern Territory. It differs from other species of the genus parasitic in turtles by several characters including the shape of the median ridge in the buccal capsule and the position of the anterior pair of caudal papillae in males. Camallanus sprenti sp. nov. is reported from Elseya latisternum (type host) and Emydura krefftii in northern Queensland. It is closely related to Camallanus tuckeri, and differs from the latter species in possessing a shorter oesophagus. We summarize data on morphology, distribution and specificity of 5 known Camallanus spp. from Australian turtles and provide a key for their identification. Sequence comparison of more than 500 base pairs at the 5′ end of the nuclear 28S rDNA gene confirms the status of C. sprenti and C. beveridgei as new species. Camallanus sprenti differs from the other 4 species of Camallanus from Australian turtles by 16–59 bases (3.1–11.5%) while C. beveridgei differed from the other 4 species by 23–60 bases (4.5–11.6%). Phylogenetic analysis demonstrates close interrelationships among C. tuckeri, C. sprenti and C. beveridgei, the three species with most similar buccal capsules.
[1] Baker M.R. 1983. Nematode parasites of Pelusios sinuatus (Pelomedusidae: Pleurodira) from southern Africa. Systematic Parasitology, 5, 161–167. DOI: 10.1007/BF00009348. http://dx.doi.org/10.1007/BF0000934810.1007/BF00009348Search in Google Scholar
[2] Ferguson M.A., Smales L.R. 1998. Spiroxys chelodinae Berry, 1985 (Nematoda: Spiruroidea) and Camallanus chelonius Baker, 1983 (Nematoda: Camallanoidea) from freshwater turtles (Pleurodira: Chelidae) in Queensland, Australia. Transactions of the Royal Society of South Australia, 122, 185–189. Search in Google Scholar
[3] Hall T.A. 1999. BioEdit: a user-friendly biological sequence alignment editor and analysis program for Windows 95/98/NT. Nucleic Acids Symposium Series, 41, 95–98. Search in Google Scholar
[4] Ivashkin V.M., Sobolev A.A., Khromova L.A. 1971. [Fundamentals of Nematodology. Vol. 22. Camallanata of animals and man and diseases caused by them]. Izdatel’stvo Akademii Nauk SSSR, Moscow, 388 pp. (In Russian). Search in Google Scholar
[5] Kuzmin Y., Tkach V.V., Snyder S.D., Maier M.D. 2009. Camallanus tuckeri n. sp. (Nematoda: Camallanidae) from freshwater turtles (Pleurodira: Chelidae), in the Kimberley, Western Australia. Comparative Parasitology, 76, 133–140. DOI: 10.1654/4391.1. http://dx.doi.org/10.1654/4391.110.1654/4391.1Search in Google Scholar
[6] Petter A.J. 1979. Essai de classification de la sous-famille des Camallaninae (Nematoda, Camallanidae). Bulletin du Museum National d’Histoire Naturelle, 4e Sér., 1, Section A, 4, 991–1008. Search in Google Scholar
[7] Rigby M.C., Sharma R.S.K., Hechinger R.F., Platt T.R., Weaver J.C. 2008. Two new species of Camallanus (Nematoda: Camallanidae) from freshwater turtles in Queensland, Australia. Journal of Parasitology, 94, 1364–1370. DOI: 10.1645/GE-1504.1. http://dx.doi.org/10.1645/GE-1504.110.1645/GE-1504.1Search in Google Scholar PubMed
[8] Sharma R.S.K., Rigby M.C., Sumita S., Sani R.A., Vidyadaran M.K., Jasni S., Dailey M.D. 2002. Redescription of Serpinema octorugatum (Baylis, 1933) (Nematoda: Camallanidae) from the Malayan box turtle Cuora amboinensis (Daudin) (Chelonia: Bataguridae). Systematic Parasitology, 53, 19–28. DOI: 10.1023/A:1019997922052. http://dx.doi.org/10.1023/A:101999792205210.1023/A:1019997922052Search in Google Scholar
[9] Tkach V.V., Pawlowski J. 1999. A new method of DNA extraction from the ethanol-fixed parasitic worms. Acta Parasitologica, 44, 147–148. Search in Google Scholar
[10] Yeh L.S. 1960. On a reconstruction of the genus Camallanus Railliet and Henry, 1915. Journal of Helminthology, 34, 117–124. DOI: 10.1017/S0022149X00020435. http://dx.doi.org/10.1017/S0022149X0002043510.1017/S0022149X00020435Search in Google Scholar PubMed
© 2011 W. Stefański Institute of Parasitology, PAS
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
