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Mitotic chromosomes of Sphaerostomum bramae (Müller, 1776) Szidat, 1944

Published online by Cambridge University Press:  05 June 2009

R. Petkevičiūtė ,
G. Stanevičiūtė  and
V. Kiselienė
R. Petkevičiūtė
Affiliation:
Institute of Ecology, Lithuanian Academy of Sciences, Akademijos 2, Vilnius 2600, Lithuania
G. Stanevičiūtė
Affiliation:
Institute of Ecology, Lithuanian Academy of Sciences, Akademijos 2, Vilnius 2600, Lithuania
V. Kiselienė
Affiliation:
Institute of Ecology, Lithuanian Academy of Sciences, Akademijos 2, Vilnius 2600, Lithuania
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Abstract

Karyometrical analysis of conventional Giemsa-stained mitotic chromosomes of parthenitae of Sphaerostomum bramae (Trematoda: Opecoelidae) was carried out. The karyotype displays a typical ‘plagiorchiid’ pattern with 22 chromosomes in a diploid set including a first pair of large metacentric elements. Chromosomes with medially or submedially located centromeres prevail in the karyotype; only chromosomes 7 and 9 are subtelocentric. With the data now available, close karyological affinity was noted between S. bramae, the representative of the family Opecoelidae, and other karyologically studied species of some families in the order Plagiorchiiformes: Troglotrematidae, Plagiorchiidae, Prosthogonimidae, Lecithodendriidae and Telorchiidae.

Type
Research Papers
Information
Journal of Helminthology , Volume 69 , Issue 4 , December 1995 , pp. 347 - 349
Copyright
Copyright © Cambridge University Press 1995

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