Hostname: page-component-78c5997874-v9fdk Total loading time: 0 Render date: 2024-11-16T13:29:02.989Z Has data issue: false hasContentIssue false
  • English
  • Français

A new species of Neoascaris from Rattus assimilis, with a redefinition of the genus

Published online by Cambridge University Press:  06 April 2009

J. F. A. Sprent
J. F. A. Sprent
Affiliation:
University of Queensland Veterinary School, Brisbane, Queensland
Get access Rights & Permissions [Opens in a new window]

Extract

Neoascaris mackerrasae from the small intestine of the Australian allied rat (Rattus assimilis) is described. It is compared with Neoascaris vitulorum and found to differ as follows:

(1) It is a considerably smaller species.

(2) The vulva is situated more posteriorly.

(3) The nucleus of the dorsal oesophageal gland is oval and situated in the dorsal sector of the ventriculus, whereas in N. vitulorum it is elongate and is situated in the sub ventral sectors.

(4) The eggs are more coarsely pitted.

(5) The spicules have two flanges which form a gutter on the ventral surface, whereas in N. vitulorum they are almost cylindrical.

The genus Neoascaris is redefined so as to include the presence of rudimentary cervical alae and the unequal distribution of the oesophageal glands. The genus is placed in the family Toxocaridae Hartwich, 1954.

Other ascaridoid parasites occurring in rodents are listed and differentiated from N. mackerrasae. It is suggested that on account of the arrangement in the ventriculus of the nuclei of the oesophageal glands, N. mackerrasae may represent a primitive species among the ascaridoid parasites of mammals.

Type
Research Article
Information
Parasitology , Volume 47 , Issue 3-4 , December 1957 , pp. 350 - 360
Copyright
Copyright © Cambridge University Press 1957

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Baylis, H. A. (1936 a). Nematoda 1. Ascaroidea and Strongyloidea. 408 pp. London. (The Fauna of British India, including Ceylon and Burma.)Google Scholar
Baylis, H. A. (1936 b). A new ascarid from a bat. Ann. Mag. Nat. Hist. 17, 360–5.CrossRefGoogle Scholar
Baylis, H. A. & Daubney, R. (1922). Report on the parasitic nematodes in the collection of the Zoological Survey of India. Mem. Indian Mus. 7, 263–347.Google Scholar
Boulenger, C. L. (1922). On Ascaris vitulorum Goeze. Parasitology, 14, 87–92.CrossRefGoogle Scholar
Chitwood, B. G. (1937). A revised classification of the Nematoda (Russian summary). Robot. Gel'mint. (Skrjabin), pp. 69–80.Google Scholar
Goeze, J. A. E. (1782). Versuch einer Naturgeschichte der Eingeweidewürmer thierischer Körper, xi + 471 pp. Blankenburg.Google Scholar
Hall, M. C. (1916). Nematode parasites of mammals of the orders Rodentia, Lagomorpha, and Hyracoidea. Proc. U.S. Nat. Mus. 50, 1–258.CrossRefGoogle Scholar
Hartwich, G. (1954). Die Vorderdarmstrukturen, das Exkretionssystem sowie der Kopfbau der Ascariden und ihre taxonomische Bedeutung. Wiss. Z. Univ. Halle (Math.-Nat.), 6, 1171–212.Google Scholar
Hsü, H. F. (1933). Study on the oesophageal glands of parasitic Nematoda superfarnily Ascaroidea. Chinese Med. J. 47, 1247–88.Google Scholar
Leidy, J. (1856). A synopsis of Entozoa and some of their ectocongeners observed by the author. Proc. Acad. Nat. Sci. Philad. 8, 42–58.Google Scholar
Linsdale, J. M. (1946). The California Ground Squirrel, 475 pp. Berkeley and Los Angeles: Univ. Calif. Press. [Original not seen.]Google Scholar
Linstow, O. F. B. von (1897). Nemathelminthen grösstentheils in Madagascar gesammelt. Arch. Naturg. 1, 27–34.Google Scholar
Macfie, J. W. S. (1922). The Ascaris of cattle. Ann. Trop. Med. Parasit. 16, 311–13.CrossRefGoogle Scholar
Mozgovoi, A. A. (1953). Ascaridata of Animals and Man and Diseases Caused by Them. [In Russian.] 2 vols. Academy of Sciences, U.S.S.R. Leningrad.Google Scholar
Neumann, L. G. (1883). Sur l'ascaride des bêtes bovines. Rev. Vét. Toulouse, 8, 362–77.Google Scholar
Parona, C. (1909). Vermi parassiti di vertebrati. Ruwenzori, Parte Scient. 1, 415–22. [Original not seen.]Google Scholar
Ransom, B. H. (1911). The nematodes parasitic in the alimentary tract of cattle, sheep, and other ruminants. Bull. Bur. Anim. Indust. (U.S. Dep. Agric.), no. 127, 132 pp.Google Scholar
Rausch, R. & Tiner, J. D. (1948). Studies on the parasitic helminths of the North Central States. I. Helminths of Seiuridae. Amer. Midl. Nat. 39, 728–47.CrossRefGoogle Scholar
Rudolphi, C. A. (1809). Entozoorum sive vermium intestinalium historia naturalis. 2 (1), 457 pp. Amstelaedami.Google Scholar
Sadovskaya, N. P. (1952). Parasitic worms of rodents and insects in the Black Sea region. Dissertation. [Cited from Mozgovoi (1953).]Google Scholar
Schulz, R. Ed. (1931). Ascaris joffi n.sp. und A. tarbagan n.sp.—zwei neue Askariden der Nagetiere. Zool. Anz. 94, 238–45.Google Scholar
Schulz, R. Ed. & Alojan, M. T. (1950). A new ascarid from a mole-rat (Spalax leucodon) Ascaris spalacis n.sp. Dokl. A. H. Armenian S.S.R., 12, 147–150. [Original not seen.]Google Scholar
Stiles, C. W. (1905). In Stiles, C. W. & Hassall, A. The determination of generic types. Bull. Bur. Anim. Indust. (U.S. Dep. Agric.), no. 79, pp. 1–150.Google Scholar
Tiner, J. D. (1951). The morphology of Ascaris laevis Leidy 1856, and notes on ascaris in Rodents. Proc. Helm. Soc. Wash. 18, 126–31.Google Scholar
Tiner, J. D. & Chin, T. H. (1948). The occurrence of Ascaris lumbricoides L. 1758 in the Muskrat Ondatra zibethica L. J. Parasit. 34, 253.CrossRefGoogle ScholarPubMed
Travassos, L. P. (1927). Nota sobre o Ascaris vitulorum. Bol. Biol., S. Paulo, 5, 22.Google Scholar