Morphology, phylogeny and evolution of the superfamily plectoidea Örley, 1880 (Nematoda: Plectida)

Annales Zoologici

Volumn 54, Issue 4, 2004, Pages 631-672

  Holovachov, Oleksandr ^a  

^a IVAN FRANKO NATIONAL UNIVERSITY OF LVIV   (Ukraine)

Author keywords

Cladistic analysis; Morphology; Nematoda; Plectoidea; Postembryonic development; Systematics

Indexed keywords

ANAPLECTUS; CHRONOGASTER; NEMATODA; PLECTIDAE; PLECTOIDEA; PLECTOLAIMUS; PLECTUS; PLECTUS COMMUNIS; PLECTUS PARIETINUS;

EID: 12344325085     PISSN: 00034541     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (125)

1. Ali, S.M., Farooqui, M.N. and S. Tejpal. 1969. Neotylocephalus annonae n. gen. n. sp. (Nematoda: Wilsonematinae) from Maratwada, India. Rivista di Parassitologia, 30: 287-290.
2. Anderson, R.V. 1966. An emendation of the diagnosis of both the subfamily and two genera of Wilsonematinae and a new genus, Ereptonema n. g. (Plectidae: Nematoda). Canadian Journal of Zoology, 44: 923-935.
3. Anderson, R.V. and W. Sudhaus. 1985. Description of Rhabditis (Pellioditis) dolichuroides n. sp. (Nematoda: Rhabditidae) from Kenya. Canadian Journal of Zoology, 63:1711-1715.
4. Andrássy, I. 1958. Erd- und Süsswassernematoden aus Bulgarien. Acta Zoologica Hungarica, 4: 1-88.
5. Andrássy, I. 1973. Nematoden aus Strand- und Höhlenbiotopen von Kuba. Acta Zoologica Hungarica, 19: 233-270.
6. Andrássy, I. 1973. Plectus granulosus var. grandepapillatus Ditlevsen - ein älteres Synonym von Anaplectus submenus (Hirschmann) (Nematoda: Plectidae). Opuscula Zoologica Budapestinensis, 12: 105-106.
7. Andrássy, I. 1976. Evolution as a basis for the systematization of nematodes. Akadémiai Kiado, Budapest, 288 pp.
8. Andrássy, I. 1984. Klasse Nematoda (Ordnungen Monhysterida, Desmoscolecida, Araeolaimida, Chromadorida, Rhabditida). Gustav Fischer Verlag, Stuttgart, 509 pp.
9. Andrássy, I. 1985a. The genus Plectus Bastian, 1865 and its nearest relatives (Nematoda: Plectidae). Acta Zoologica Hungarica, 31: 1-52.
10. Andrássy, I. 1985b. A dozen new nematode species from Hungary. Opuscula Zoologica Budapestinensis, 19/20: 3-39.
11. Andrássy, I. 1987. The free-living nematode fauna of the Kiskunság National Park. In: The Fauna of the Kiskunság National Park: 15-46.
12. Andrássy, I. 1998. Nematodes in the Sixth Continent. Journal of Nematode Morphology and Systematics, 1: 107-186.
13. Andrássy, I. 2003. New and rare nematodes from Alaska. I. Three species of the family Plectidae. Journal of Nematode Morphology and Systematics, 5: 33-48.
14. Bastian, H.C. 1865. Monograph on the Anguillulidae, or free Nematoids, marine, land, and freshwater; with descriptions of 100 new species. Transactions of the Linnean Society of London - Zoology, 25: 73-184.
15. Blaxter, M., De Ley, P., Garey, J.R., Liu, L.X., Scheldeman, P., Vierstraete, A., Vanfleteren, J.R., Mackey, L.Y., Dorris, M., Friesse, L.M., Vida, J.T. and W.K. Thomas. 1998. A molecular evolutionary framework for the phylum Nematoda. Nature, 392: 71-75.
16. Brzeski, M.W. and L. Háněl. 1999. Paratylenchinae: postembryonic developmental stages of Paratylenchus straeleni (De Coninck, 1931) and P. steineri Golden, 1961 (Nematoda: Tylenchulidae). Nematology, 1: 673-680.
17. Bütschli, O. 1873. Beiträge zur Kenntnis der freilebende Nematoden. Nova Acta der Ksl. Leop.-Carol. Deutschen Akademie der Naturforscher, 36: 1-124.
18. Camin, J.H. and R.R. Sokal. 1965. A method for deducing branching sequences in phylogeny. Evolution, 19: 311-326.
19. Chawla, M.L., Khan, E. and S.K. Prasad. 1969. Wilsotylus bangaloreiensis gen. nov., sp. nov. (Nematoda, Plectidae) from soil around roots of mango, (Mangifera indica) from Bangalore, India. Bulletin of Entomology, 10: 146-149.
20. Chawla, M.L., Khan, E. and M. Saha. 1977. Wilsereptus andersoni gen. n., sp. n. (Wilsonematinae: Plectidae, Nematoda) from soil around roots of grass at Dalhousi, India with a key to the genera of the subfamily. Indian Journal of Nematology, 5 (1975): 176-179.
21. Chitwood, B.G. 1933. A revised classification of the Nematoda. Journal of Parasitology, 20: 131.
22. Chitwood, B.G. 1951. North American marine nematodes. Texas Journal of Science, 3: 617-672.
23. Chitwood, B.G. and M.B. Chitwood. 1974. Introduction to Nematology. University Park Press, 336 pp.
24. Cobb, N.A. 1893. Nematode worms found attacking sugar cane. Agricultural Gazette of New South Wales, 4: 808-833.
25. Cobb, N.A. 1906. Free living nematodes inhabiting the soil around roots of cane, and their relation to root deseases. Bulletin of Hawaii Sugar Planters' Association experimental Station: 163-195.
26. Cobb, N.A. 1913. New nematode genera found inhabiting fresh water and non-brackish soils. Journal of the Washington Academy of Sciences, 3: 432-444.
27. Cobb, N.A. 1920. One hundred new nemas (type species of 100 new genera). Contribution to a science of Nematology, 9: 217-343.
28. Crossman, L. 1933. Preliminary observations on the life history and morphology of Tylocephalus bacillivorus n. g., n. sp., a nematode related to the genus Wilsonema. Journal of Parasitology, 20: 106-107.
29. De Coninck, L. 1931. Sur trois espèces nouvelles de nématodes libres trouvés en Belgique. Bulletin du Musée royal d'Histoire naturelle de Belgique, 7: 1-15.
30. De Coninck, L.A. 1935. Contribution à la Connaissance des Nématodes libres du Congo Belge. I. - Les Nématodes libres des marais de la Nyamuamba (Ruwenzori) et des sources chaudes du Mont Banze (Lac Kivu). Revue de Zoologique et Botanique Africaine, 26: 211-232, 245-326.
31. De Coninck, L.A. and J.H. Schuurmans Stekhoven. 1933. The freeliving marine nemas of the Belgian coast. II. Mémoires du Musée Royal d'Histoire Naturelle de Belgique, 58: 1-163.
32. De Ley, P. and M. Blaxter. 2002. Systematic position and phylogeny. In: Lee D.L. (ed.). The biology of nematodes. Taylor & Francis, London and New York, 1-30.
33. De Ley, P. and A. Coomans. 1994. Terrestrial nematodes from the Galápagos Archipelago IV: The genus Plectus Bastian, 1865, with description of three new species (Leptolaimina: Plectidae). Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Biologie, 64: 43-70.
34. De Ley, P. and A. Coomans. 1997. Terrestrial nematodes from the Galapagos Archipelago. 7. Description of Tylocephalus nimius sp. n. and new data on the morphology, development and behaviour of T. auriculatus (Bütschli, 1873) Anderson, 1966 (Leptolaimina: Plectidae). Fundamental and Applied Nematology, 20: 213-228.
35. De Ley, I., Holovachov, O. and P. De Ley. 2002. Scanning electron microscopy of the juvenile stages of some Wilsonematinae (Plectidae). Nematology 4: 244 (abstract).
36. De Ley, P., Van de Velde, M.C., Mounport, D., Baujard, P. and A. Coomans. 1995. Ultrastructure of the stoma in Cephalobidae, Panagrolaimidae and Rhabditidae, with a proposal for a revised stoma terminology in Rhabditida (Nematoda). Nematologica, 41: 153-182.
37. Ditlevsen, H. 1919. Marine freeliving nematodes from Danish waters. Videnskabelige Meddelelser fra Naturhistorik Forening, 70: 147-214.
38. Ditlevsen, H. 1928. Land- and freshwater nematodes. Zoology of the Faroes 1, 13: 1-28.
39. Dougherty, E.C. 1955. The genera and species of the subfamily Rhabditinae Mikoletzky, 1922 (Nematoda): a nomenclatorial analysis, including an addendum on the composition of the family Rhabditidae Örley, 1880. Journal of Helminthology, 29: 105-152.
40. Ebsary, B.A. 1985. Two new species of Plectus with redescription of Plectus cancellatus Zullini, 1978 (Nematoda: Plectidae) from Canada. Canadian Journal of Zoology, 63: 2395-2400.
41. Eroshenko, A.S. 1973. [New data on taxonomy of the family Teratocephalidae Andrássy (Nematoda)]. Zoologischesky Zhurnal, 52: 1768-1776 (in Russian).
42. Eroshenko, A.S. 1977. [Nematodes of the ordines Araeolaimida and Dorylaimida of the soil fauna of the forests of the Primorskii Krai]. Paraziticheskie i svobodnozhyvushchie chervi fauny Dalnego Vostoka, Trudy Biologo-pochvennogo instituta, 47: 3-20 (in Russian).
43. Eyualem, A. and A. Coomans. 1995. Freshwater nematodes of the Galápagos. Hydrobiologia, 299: 1-51.
44. Felsenstein, J. 1989. PHYLIP - Phylogeny Inference Package. Cladistics, 5: 164-166.
45. Filipjev, I. 1918. [Free-living marine Nematodes of the Sevastopol area]. Trudy osoboi zoologicheskoi laboratorii I sevastopol'skoi biologicheskoi stantsii Rossiiskoi Akademii Nauk, 2: 1-350 (in Russian).
46. Filipjev, I.N. 1929. Classification of freeliving Nematoda and relations to parasitic forms. Journal of Parasitology, 15: 281-282.
47. Filipjev, I.N. 1934. The classification of the freeliving Nematodes and their relation to the parasitic nematodes. New York, 64 pp.
48. Forey, P.L., Humphries, C.J., Kitching, I.J., Scotland, R.W., Siebert, D.J. and D.M. Williams. 1996. Cladistics: a practical course in systematics. Oxford University Press, New York, 191 pp.
49. Fuchs, G. 1930. Neue an Borken- und Rüsselkäfer gebundene Nematoden, halbparasitische und Wohnungseinmieter. Freilebende Nematoden aus Moos und Walderde in Borken-und Rüsselkäfergängen. Zoologische Jahrbücher, Abteilung für Systematik, 59: 505-646.
50. Fürst von Lieven, A. 2002. The sister group of the Diplogasterina (Nematoda). Russian Journal of Nematology, 10: 127-137.
51. Fürst von Lieven, A. 2003. Functional morphology and evolutionary origin of the three-part pharynx in nematodes. Zoology, 106: 183-201.
52. Gagarin, V.G. 1975. [A contribution to the taxonomy and phylogeny of the superfamily Plectoidea (Nematoda)]. Zoologicheskii Zhurnal, 56: 503-509 (in Russian)
53. Ganguly, S. and E. Khan. 1986. A new genus of the family Wilsonematidae rank. n. (Plectoidea: Nematoda). Indian Journal of Nematology, 16: 226-230.
54. Gerlach, S.A. and F. Riemann. 1973. The Bremerhaven checklist of aquatic nematodes. A catalogue of Nematoda Adenophorea excluding the Dorylaimida. Part 1. Veröffentlichungen des Instituts für Meeresforschung in Bremerhaven, Supplement, 4: 1-404.
55. Goloboff, P. 1993. NONA. Noname, version 2.0. Program and documentation.
56. Halbrendt, J.M. and D.J.F. Brown. 1992. Morphometric evidence for three juvenile stages in some species of Xiphinema americanum sensu lato. Journal of Nematology, 24: 305-309.
57. Hernandez, M.A., Imaz, A and I. Armendariz. 1998. Description of a new species of Plectus Bastian, 1865 (Nematoda: Plectidae) and the males of two other species from Northern Spain. Nematologica, 44: 631-642.
58. Heyns, J. and A. Coomans. 1990. Pakira orae Yeates, 1967 from Transkei (Nematoda: Leptolaimidae). Sud-Afrikaans Tydskrift Dierkunde, 25: 46-53.
59. Holovachov, O. 2001. Study of Plectidae (Nematoda) from Ukraine. Variability of male sexual characters in Plectus pusteri Fuchs, 1930. International Journal of Nematology, 11: 209-214.
60. Holovachov, O. and S. Boström. 2004. Morphology and systematics of the superfamily Leptolaimoidea Örley, 1880 (Nematoda: Plectida). Journal of Nematode Morphology and Systematics, in press.
61. Holovachov, O., Boström, S. and M. Mundo-Ocampo. 2004. Description of three known and two new species of the genus Tylocephalus Crossman, 1933 with a revised taxonomy of the genus and key to species of the subfamily Wilsonematinae (Plectida). Russian Journal of Nematology, in press.
62. Holovachov, O., Boström, S. and A. Susulovsky. 2001. Study of Plectidae (Nematoda) from Ukraine. Description of Plectus paracuminatus Zell, 1993 with observations of male sexual characters. Journal of Nematode Morphology and Systematics, 4: 11-20.
63. Holovachov, O., Boström, S., Tandingan De Ley, I., De Ley, P. and A. Coomans. 2003. Morphology and Systematics of the genera Wilsonema Cobb, 1913, Ereptonema Anderson, 1966 and Neotylocephalus Ali, Farooqui & Tejpal, 1969 (Leptolaimina: Wilsonematinae). Journal of Nematode Morphology and Systematics, 5 (2002): 73-106.
64. Holovachov, O., Boström, S., Winiszewska, G. and L. Háněl. 2004. Description of two known and one new species of the genus Anaplectus De Coninck & Schuurmans Stekhoven, 1933 from Europe, and a revised taxonomy of the genus (Nematoda: Plectida). Russian Journal of Nematology, 12: 45-58.
65. Holovachov, O. and P. De Ley. 2005. Order Plectida. In: Eyualem A. (ed.) Freshwater nematodes: ecology and taxonomy, in press.
66. Holovachov, O. and A. Susulovsky. 2000. Study of Plectidae (Nematoda) from Ukraine. Description of two Plectus species with a discussion of some tail abnormalities. Annales Zoologici, 50: 233-238.
67. Holovachov, O., Susulovsky, A. and S. Boström. 2000. Description of two species of Chiloplectus Andrássy, 1984 (Nematoda: Plectidae) from Ukraine and a revised taxonomy of the genus. Nematology, 2: 381-394.
68. Inglis, W.G. 1966. Marine nematodes from Durban, South Africa. Bulletin of the British Museum (Natural History), Zoology, 14: 81-106.
69. Inglis, W.G. 1983. An outline of classification of the phylum Nematoda. Australian Journal of Zoology, 31: 243-255.
70. Iwan, D. 2002. Generic classification of the tribe Platynotini (Coleoptera: Tenebrionidae), with notes on phylogeny. Annales Zoologici, 52: 1-149.
71. Karegar A., De Ley, P. and E. Geraert. 1997. Three teratocephalid nematodes from Iran. Fundamental and Applied Nematology, 20: 459-471.
72. Keppner, E.J. 1988. Six new species of free-living marine nematodes (Nematoda: Araeolaimida: Enoplida) from two estuaries in Northwest Florida, U.S.A. Transactions of the American Microscopical Society, 107: 79-95.
73. Kischke, U. 1956. Die Nematoden aus der Torf-Zone der Hochmoore des Oberharzes. Archiv für Hydrobiologie, 52: 210-277.
74. Kluge, A.G. and J.S. Farris. 1969. Quantitative phyletics and the evolution of animals. Systematic Zoology, 18: 1-32.
75. Kreis, H.A. 1963. Marine Nematoda. Zoology of Iceland, 2: 1-68.
76. Lahl, V., Halama, C. and E. Schierenberg, 2003. Comparative and experimental embryogenesis of Plectidae (Nematoda). Developmental Genes and Evolution, 213: 18-27.
77. Litvaitis, M.K., Bates, J.W., Hope, W.D. and T. Moens. 2000. Inferring a classification of the Adenophorea (Nematoda) from nucleotide sequences of the D3 expansion segment (26/28S rDNA). Canadian Journal of Zoology, 78: 911-922.
78. Loof, P.A.A. 1971. Freeliving and plant parasitic nematodes from Spitzbergen, collected by Mr. H. van Rossen. Mededelingen Landbouwhogeschool Wageningen, 71: 1-86.
79. Lorenzen, S. 1981. Entwurf eines phylogenetischen Systems der freilebenden Nematoden. Veröffentlichungen des Instituts für Meeresforschung Bremerhaven, Supplement, 7: 1-472.
80. Lorenzen, S. 2000. The role of the biogenetic convergence rule in polarising transformation series - arguments from nematology, chaos science, and phylogenetic systematics. Annales Zoologici, 50: 267-275.
81. Maggenti, A.R. 1961a. Morphology and biology of the genus Plectus (Nematoda: Plectidae). Proceedings of the Helminthological Society of Washington, 28: 118-130.
82. Maggenti, A.R. 1961b. Revision of the genus Plectus (Nematoda: Plectidae). Proceedings of the Helminthological Society of Washington, 28: 139-166.
83. Maggenti, A.R. 1963. Comparative morphology in nemic phylogeny. In: Dougherty et al. The lower Metazoa, comparative biology and phylogeny. University of California Press, 273-282.
84. Maggenti, A.R., Raski, D.J., Koshy, RK. and V.K. Sosamma. 1983. A new species of Chronogaster Cobb, 1913 (Nemata: Plectidae) with an amended diagnosis of the genus and discussion of cuticular ornamentation. Revue de Nématologie, 6: 257-263.
85. Malakhov, V.V. 1986. [Nematodes. Structure, development, system and phylogeny]. Nauka, Moskva, 216 pp. (In Russian.)
86. Malakhov, V.V., Ryzhykov, K.M. and M.D. Sonin. 1982. [System of higher taxa of nematodes]. Zoologicheskii Zhurnal, 64: 1125-1134 (in Russian).
87. de Man, J.G. 1876. Onderzoekingen over vrij in de aarde levende Nematoden. Tijdschrift Nederlandsche dierkundige Vereeniging, 2: 78-196.
88. de Man, J.G. 1880. Die einheimischen, frei in der reinen Erde und im süßen Wasser lebenden Nematoden. Vorläufige Bericht und descriptiv-systematischer Theil. Tijdschrift Nederlandsche dierkundige Vereeniging, 5: 1-104.
89. de Man, J.G. 1886. Anatomische Untersuchungen über freilebende Nordsee-Nematoden. Leipzig, 82 pp.
90. de Man, J.G. 1904. Nématodes libres (Expédit. Antarctique Belge). Résults of the Voyage S. Y. Belgica: 1-51.
91. de Man, J.G. 1921. Nouvelles recherches sur les Nématodes libres terricoles de la Hollande. Capita Zoologica, 1: 1-62.
92. Maupas, E. 1900. Modes et formes de reproduction chez les nématodes. Archives Zool. Expér. Gén., 8: 463-624.
93. Micoletzky, H. 1924. Weitere Beiträge zur Kenntnis freilebenden Nematoden aus Suez. Sitzungsberichte der Akademie der Wissenschaften in Wien, 132: 225-262.
94. Mulk, M.M. and A. Coomans. 1978. Freeliving nematodes from Mount Kenya. II. Scientific report of the Belgian Mt. Kenya bioexpedition. Revue Zoologique Africane, 92: 593-608.
95. Nixon, K.C. 2002. Winclada (BETA) ver. 0.9.9. NY.
96. Novicova, S.I. 1971. [Description of males of Plectus armatus Buetschlii and Teratocephalus costatus Andrassy (Nematoda, Plectidae, Teratocephalidae)]. Zoologicheskii Zhurnal, 50: 1400-1402 (in Russian).
97. Novicova, S.I. and V.G. Gagarin. 1971. [New species of the genus Plectus (Nematoda, Plectidae)]. Zoologicheskii Zhurnal, 50: 1097-1098 (in Russian).
98. Örley, L. 1880. Az anguillulidák magánrajza. Természetrajzi Füzetek, 4: 1-165.
99. Page, R.D.M. 1996. TREEVIEW: An application to display phylogenetic trees on personal computers. Computer Applications in the Biosciences, 12: 357-358.
100. Paramonov, A.A. 1964. [Principles of Phytonematology. 2. Taxonomy of phytonematodes]. Moskwa, 446 pp (in Russian).
101. Patil, K.J. and E. Khan. 1982. Taxonomic studies of nematodes of Vidarbha region of Maharashtra, India. VI. Spatiocephalus venustrus gen. n. sp. n. (Nematoda: Wilsonematinae). Indian Journal of Nematology, 12: 254-257.
102. Rasnitsyn, A.P. 2002. [Process of evolution and the methodology of systematics]. Proceedings of the Russian Enthomological Society, 73: 1-108 (in Russian).
103. Riemann, F. 1970. Freilebende Nematoden aus dem Grenzbereich Meer-Süß-Wasser in Kolumbien, Südamerika. Verö ffentlichungen des Instituts für Meeresforschung Bremerhaven, 12: 365-412.
104. Riemann, F. 1977. Causal aspects of nematode evolution: relations between structure, function, habitat and evolution. Mikrofauna Meeresboden, 61: 217-230.
105. Sanwal, K.C. 1968. Morphology and relationships of Periplectus labiosus n. gen., n. sp. (Nematoda: Plectinae) with remarks on its evolutionary significance. Canadian Journal of Zoology, 46: 991-1003.
106. Seinhorst, J.W. 1959. A rapid method for the transfer of nematodes from fixative to anhydrous glycerin. Nematologica, 4: 67-69.
107. Siddiqi, M.R. 2003. Keralanema spinicorpus (Maggenti et al., 1983) gen. n., comb. n. (Nematoda: Chronogastridae). International Journal of Nematology, 13: 236.
108. Tahseen, Q. and M.S. Jairajpuri. 1988. Description and developmental biology of Teratorhabditis andrassyi n. sp. (Nematoda: Rhabditida). Revue de Nematologie, 4: 333-342.
109. Tahseen, Q., Ahmad, I. and M.S. Jairajpuri. 1992. Description and developmental biology of Plectus zelli n. sp. (Nematoda: Araeolaimida). Fundamental and Applied Nematology, 15: 503-510.
110. Taylor, A.L. 1935. A review of the fossil nematodes. Proceedings of the Helminthological Society of Washington, 2: 47-49.
111. Timm, R. 1961. Antarctic soil and freshwater nematodes from the McMurdo Sound Region. Proceedings of the Helminthological Society of Washington, 38: 42-52.
112. Tsalolikhin, S.Ya. 1980. [Wieght estimation of freshwater nematodes]. Evolution, taxonomy, morphology and ecology of freeliving nematodes: 80-85 (in Russian).
113. Turpeenniemi, T. 1993. Ultrastructure of coelomocytes in Sphaerolaimus gracilis de Man, 1876 (Nematoda). Journal of Nematology, 25: 616-624.
114. Turpeenniemi, T.A. and H. Hyvärinen. 1996. Structure and role of the renette cell and caudal glands in the nematode Sphaerolaimus gracilis (Monhysterida). Journal of Nematology, 28: 318-327.
115. Van de Velde, M.C. and A. Coomans. 1987. Ultrastructure of the excretory system of the marine nematode Monhystera disjuncta. Tissue and Cell, 19: 713-725.
116. Von Linstow, O. F. B. 1876. Helminthologische Beobachtungen. Archiv für Naturgeschichte, 42: 1-18.
117. Wiley, E.O., Siegel-Casey, D., Brooks, D.R. and V.A. Funk. 1991. The Compleat Cladist: a primer of phylogenetic procedures. The University of Gansas Museum of Natural History, 159 pp.
118. Winiszewska, G. 1998. Redescription of Chronogaster boettgeri Kischke, 1956 (Nematoda: Leptolaimidae). Annales Zoologici, 48: 333-335.
119. Yeates, G.W. 1967. Studies on nematodes from dune sands. 2. Araeolaimida. New Zealand Journal of Science, 10: 287-298.
120. Yeates, G.W. 1970. Two terrestrial nematodes from the McMurdo Sound region, Antarctica, with a note on Anaplectus arenicola Killick, 1964. Journal of Helminthology, 44: 27-34.
121. Zell, H. 1991. Hemiplectus muscorum n. gen., n. spec. (Nematoda, Leptolaimidae). Zoologischer Anzeiger, 226: 298-306.
122. Zell, H. 1993. Die Gattung Plectus Bastian, 1865 sensu lato (Nematoda, Plectidae) - Ein Beitrag zur Ökologie, Biogeographie, Phylogenie und Taxonomie der Plectidae. Andrias, 11: 1-173.
123. Zimmerman, W. 1967. Methoden der Evolutionswissenschaft. In: G. Heberer (ed.), Die Evolution der Organismen. G. Fisher Verlag, Stuttgart, 61-160.
124. Zullini, A. 1978. Nematodi liberi dell'Isola di Tavolara (Sardegna). Rendiconti (V), 3: 67-76.
125. Zullini, A. and M. Pagani. 1989. The ecological meaning of relative egg size in soil and freshwater nematodes. Nematologica, 35: 90-96.