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The Chromosome Complement of Procerodes Dohrni (Tricladida: Maricola)

Published online by Cambridge University Press:  11 May 2009

Lodovico Galleni ,
Marco Nigro  and
Ileana Puccinelli
Lodovico Galleni
Affiliation:
Istituto di Zoologia e Anatomia comparata, Università di Pisa, 56100 Pisa, Via A. Volta, 4, Italy
Marco Nigro
Affiliation:
Istituto di Zoologia e Anatomia comparata, Università di Pisa, 56100 Pisa, Via A. Volta, 4, Italy
Ileana Puccinelli
Affiliation:
Istituto di Zoologia e Anatomia comparata, Università di Pisa, 56100 Pisa, Via A. Volta, 4, Italy
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Extract

A karyometric analysis of the diploid complement of Procerodes dohrni (Turbellaria: Tricladida) was carried out on mitoses from regenerative blastema. P. dohrni has seven pairs of homologous chromosomes. Chromosome lengths decrease gradually and homologous pairs cannot be grouped. With reference to centromere position, chromosomes 1, 2, 3, 4 and 6 are metacentric, their centrometric indices vary from 46·74 to 39·82, while chromosomes 5 and 7 are submetacentric, their centromeric index being 34·63 and 29·86 respectively.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 64 , Issue 1 , February 1984 , pp. 227 - 231
Copyright
Copyright © Marine Biological Association of the United Kingdom 1984

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