Morphological and karyotypic differentiation in Caranx lugubris (Perciformes: Carangidae) in the St. Peter and St. Paul Archipelago, mid-Atlantic Ridge

作者：Jacobina Uedson Pereira^*; Martinez Pablo Ariel; Cioffi Marcelo de Bello; Garcia Jose Jr; Carlos Bertollo Luiz Antonio; Molina Wagner Franco

来源：Helgoland Marine Research, 2014, 68(1): 17-25.

DOI：10.1007/s10152-013-0365-0

• Geometric morphometrics
• Cytogenetics
• Marine boundaries
• Karyotype evolution

Isolated oceanic islands constitute interesting model systems for the study of colonization processes, as several climatic and oceanographic phenomena have played an important role in the history of the marine ichthyofauna. The present study describes the presence of two morphotypes of Caranx lugubris, in the St. Peter and St. Paul Archipelago located in the mid-Atlantic. Morphotypes were compared in regard to their morphological and cytogenetic patterns, using C-banding, Ag-NORs, staining with CMA(3)/DAPI fluorochromes and chromosome mapping by dual-color FISH analysis with 5S rDNA and 18S rDNA probes. We found differences in chromosome patterns and marked divergence in body patterns which suggest that different populations of the Atlantic or other provinces can be found in the Archipelago of St. Peter and St. Paul.

• 出版日期2014-3