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Karyometric and morphological analysis of two sympatric marine species of the Gyratrix hermaphroditus complex (Platyhelminthes: Kalyptorhynchia) occurring at Roscoff (Brittany, France)

Curini Galletti, Marco and Puccinelli, Ileana (1989) Karyometric and morphological analysis of two sympatric marine species of the Gyratrix hermaphroditus complex (Platyhelminthes: Kalyptorhynchia) occurring at Roscoff (Brittany, France). Hydrobiologia, Vol. 173 (1), p. 63-68. eISSN 1573-5117. Article.

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DOI: 10.1007/BF00008599

Abstract

Two marine sibling species of the Gyratrix hermaphroditus complex were found to occur sympatrically at Roscoff (Brittany, France). Both share the same chromosome number 2n = 6, but differ for the values of centromeric indices, length ratio of chromosomes and absolute length of the haploid genome. Differences were also found in body size and male cuticular apparatus morphology. They are furthermore distinct for the above characters from the other two marine species of the complex already known (from the Mediterranean and the North Sea). Chromosomal evolution and phylogenetical relationships within the marine species of the G. hermaphroditus complex are discussed in detail.

Item Type:Article
ID Code:4152
Status:Published
Refereed:Yes
Uncontrolled Keywords:Turbellaria, Kalyptorhynchia, Gyratrix, karyology, chromosomal evolution
Subjects:Area 05 - Scienze biologiche > BIO/05 Zoologia
Divisions:001 Università di Sassari > 01 Dipartimenti > Zoologia e genetica evoluzionistica
Publisher:Kluwer / Springer
eISSN:1573-5117
Copyright Holders:© 1989 Kluwer Academic Publishers
Deposited On:13 Jul 2010 09:15

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