Cytotaxonomic studies in Lberian Cyprinids II. Karyology of Anaecypris hispanica (Steindachner, 1866), Chondrostoma lemmingi (Steindachner, 1866), Rutilus arcasi (Steindachner, 1866) and R. macrolepidotus (Steindachner, 1866)

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Abstract
The karyotypes of four Iberian Cyprinids taxa are established by the analysis of the respective kidney metaphasic plates. Such endemisms of uniseriated pharyngeal teeth are characterized by presenting the most common diploid number found in the known Cyprinidae (2n = 50). Their chromosome complements are asymmetric and possess a reduced group of acrocentric pairs so, a high fundamental arm number. There is no evidence neither of heterochromosomes nor of intra and/or intraindividual polymorphisms, with the exception of Ch. lemmingi in what concerns the later case. Morphometric data regarding the six more conspicuous chromosomes pairs are presented for the studied species, and their relationships comparatively discussed according to the resolution obtained.