Antonella Lannino

FISH mapping of 18S rDNA and (TTAGGG) n sequences in two pipefish species (Gasteroisteiformes: Syngnathidae)

1Istituto di Scienze Marine, Sezione di Venezia, CNR, Castello 1364/a, 30122 Venezia, Italy 2Dipartimento di Biologia Animale, Universita di Palermo, Via Archirafi 18, 90123 Palermo, Italy 3Dipartimento di Scienze Ambientali, Universita “Ca’ Foscari”, Castello 2737/b 30122 Venezia, Italy 4Istituto di Ecologia e Biologia Ambientale, Universita di Urbino “Carlo Bo”, Via I. Maggetti 22, 61029 Urbino (PU), Italy

Exploring Evolution in Ceboidea (Platyrrhini, Primates) by Williams-Beuren Probe (HSA 7q11.23) Chromosome Mapping

The ancestral platyrrhine karyotype was characterised by a syntenic association of human 5 and a small segment of human 7 orthologues. This large syntenic association has undergone numerous rearrangements in various phylogenetic lines. We used a locus-specific molecular cytogenetic approach to study the chromosomal evolution of the human 7q11.23 orthologous sequences (William-Beuren syndrome, WS) in various Ceboidea (Platyrrhini) species. The fluorescent in situ hybridisation of the WS probe revealed a two-way pattern of chromosomal organisation that suggests various evolutionary scenarios. The first pattern (seen in Callimico and Saimiri) includes a fairly simple disruption of the 7/5 syntenic association by a chromosome fission. The second pattern (seen in Atelinae, Alouattinae and in Callicebus) is characterised by an increasing complexity in the 7/5 association as a consequence of a series of inversions and translocations resulting in different syntenic associations. These data support recent proposals for phylogenomic groupings of New World monkeys. The study also illustrates how single-locus probe hybridisations can reveal intrachromosomal rearrangements.

2nd Congress of the European Federation for Primatology

Folia Primatol 2008;79:305–401 DOI: 10.1159/000137690 2nd Congress of the European Federation for Primatology Prague, September 3–7, 2007 Editors: Vaclav Vancata and Marina Vancatova, Prague, Czech Republic Do Capuchin Monkeys (Cebus apella) Deal with Tokens as They Do with Real Food? Elsa Addessi a , Alessandra Mancini a, b , Lara Crescimbene a, b , Elisabetta Visalberghi a a Unit of Cognitive Primatology and Primate Centre, Institute of Cognitive Sciences and Technologies, CNR, Rome, b Università La Sapienza, Rome, Italy E-Mail: elsa.addessi@istc.cnr.it