Eur. J. Entomol. 105 (5): 823-828, 2008 | 10.14411/eje.2008.109

The usefulness of chromosomes of parasitic wasps of the subfamily Eupelminae (Hymenoptera: Chalcidoidea: Eupelmidae) for subfamily systematics

Lucian FUSU
Faculty of Biology, "Al. I. Cuza" University, Bd. Carol I nr. 11, 700506 Iaśi, Romānia; e-mail: lucfusu@hotmail.com

Karyotypes of 16 Eupelminae species were analyzed. The haploid chromosome number was found to be much more diverse than the n = 5 previously recorded for three studied species. All species investigated of Eupelmus (Eupelmus), Eupelmus (Macroneura), Merostenus excavatus and three species of Anastatus have a karyotype of n = 5; n = 7 in Eupelmus (Episolindelia) linearis, n = 8 in Arachnophaga picardi, and n = 10 in Anastatus ruficaudus. The modal chromosome number is n = 5 and this is considered to be the plesiomorphic character state for the subfamily; karyotypes with higher chromosome numbers are hypothesized to be derived independently from the ancestral state by centric fission. This cytogenetical data provides important information on the subfamily systematics, especially the subgeneric classification of Eupelmus and generic placement of Eupelmus rostratus.

Keywords: Karyotype, karyosystematics, parasitic wasps, Chalcidoidea, Eupelmidae

Received: May 2, 2008; Accepted: August 11, 2008; Published: December 30, 2008

Download citation

References

  1. BALDANZA F. & GIORGINI M. 2000: Karyotype and NOR localization differences between Encarsia formosa Gahan and Encarsia luteola Howard (Hymenoptera: Aphelinidae). Boll. Lab. Entomol. Agr. Filippo Silvestri 56: 33-41
  2. BALDANZA F., GAUDIO L. & VIGGIANI G. 1999: Cytotaxonomic studies of Encarsia FGrster (Hymenoptera: Aphelinidae). Bull. Entomol. Res. 89: 209-215 Go to original source...
  3. BOUCEK Z. 1988: Australasian Chalcidoidea (Hymenoptera). A Biosystematic Revision of Genera of Fourteen Families, with a Reclassification of Species. CAB International, Wallingford, Oxon, 832 pp
  4. GIBSON G.A.P. 1989: Phylogeny and classification of Eupelmidae, with a revision of the world genera of Calosotinae and Metapelmatinae (Hymenoptera: Chalcidoidea). Mem. Entomol. Soc. Can. 149: 1-121 Go to original source...
  5. GIBSON G.A.P. 1990: Revision of the genus Macroneura Walker in America north of Mexico (Hymenoptera: Eupelmidae). Can. Entomol. 122: 837-873 Go to original source...
  6. GIBSON G.A.P. 1995: Parasitic wasps of the subfamily Eupelminae: classification and revision of world genera (Hymenoptera: Chalcidoidea: Eupelmidae). Memoirs on Entomology, International 5. Associated Publishers, Gainesville, FL, 421 pp
  7. GIBSON G.A.P. 2006: Capitulo 74 - Familia Eupelmidae. In Fernandez F. & Sharkey M.J. (eds): Introduccion a los Hymenoptera de la Region Neotropical. Universidad Nacional de Colombia y Sociedad Colombiana de Entomologia, Bogota, pp. 717-720
  8. GIORGINI M. & BALDANZA F. 2004: Species status of two populations of Encarsia sophia (Girault & Dodd) (Hymenoptera: Aphelinidae) native to different geographic areas. Biol. Contr. 30: 25-35 Go to original source...
  9. GIRAULT A.A. 1915: Australian Hymenoptera Chalcidoidea - VII. The family Encyrtidae with descriptions of new genera and species. Mem. Qd Mus. 4: 1-184
  10. GOKHMAN V.E. 2002: Chromosomal analysis of the superfamilies Ichneumonoidea and Chalcidoidea (Hymenoptera). In Melika G. & Thuroczy C. (eds): Parasitic Wasps: Evolution, Systematics, Biodiversity and Biological Control. Agroinform, Budapest, pp. 243-248
  11. GOKHMAN V.E. 2004a: Karyotype evolution in parasitic Hymenoptera. Zool. Zh. 83: 961-970 [in Russian, English abstr.]
  12. GOKHMAN V.E. 2004b: Karyotypes of parasitic wasps of the family Eulophidae (Hymenoptera): new data and review. Russ. Entomol. J. 13: 171-174
  13. GOKHMAN V.E. 2006a: Implications of chromosomal analysis for systematics of parasitic Hymenoptera. Zool. Zh. 85: 38-47. [in Russian, English abstr.]
  14. GOKHMAN V.E. 2006b: Karyotypes of parasitic Hymenoptera: Diversity, evolution and taxonomic significance. Insect Sci. 13: 237-241 Go to original source...
  15. GOKHMAN V.E. & QUICKE D.L.J. 1995: The last twenty years of parasitic Hymenoptera karyology: an update and phylogenetic implications. J. Hym. Res. 4: 41-63
  16. IMAI H.T., CROZIER R.H. & TAYLOR R.W. 1977: Karyotype evolution in Australian ants. Chromosoma 59: 341-393 Go to original source...
  17. IMAI H.T., TAYLOR R.W., CROSLAND M.J. & CROZIER R.H. 1988: Modes of spontaneous chromosomal mutation and karyotype evolution in ants with reference to the minimum interaction hypothesis. Jap. J. Genet. 63: 159-185 Go to original source...
  18. LEVAN A., FREDGA K. & SANDBERG A.A. 1964: Nomenclature for centromeric position on chromosomes. Hereditas 52: 201-220 Go to original source...