Cytogenetics of the bathydraconid fish Gymnodraco acuticeps (Perciformes, Notothenioidei) from Terra Nova Bay, Ross Sea
Pisano, E.; Mazzei, F.; Derome, N.; Ozouf-Costaz, C.; Hureau, J.-C.; di Prisco, G. (2001). Cytogenetics of the bathydraconid fish Gymnodraco acuticeps (Perciformes, Notothenioidei) from Terra Nova Bay, Ross Sea. Polar Biol. 24(11): 846-852. https://dx.doi.org/10.1007/s003000100291 In: Polar Biology. Springer-Verlag: Berlin; Heidelberg. ISSN 0722-4060; e-ISSN 1432-2056, more Related to:Pisano, E.; Mazzei, F.; Derome, N.; Ozouf-Costaz, C.; Hureau, J.-C.; di Prisco, G. (2002). Cytogenetics of the bathydraconid fish Gymnodraco acuticeps (Perciformes, Notothenioidei) from Terra Nova Bay, Ross Sea, in: Arntz, W.E. et al. (Ed.) Ecological studies in the Antarctic sea ice zone: results of EASIZ Midterm Symposium. pp. 82-88, more |  |
| Keywords | Biological phenomena > Evolution
Biology > Cytology
Biology > Genetics
Biology > Genetics > Cytogenetics
Environments > Aquatic environment > Marine environment
Fauna > Aquatic organisms > Aquatic animals > Fish
Karyotypes
Gymnodraco acuticeps Boulenger, 1902 [WoRMS]
PS, Ross Sea [Marine Regions]
Marine/Coastal |
| Authors | | Top | - Pisano, E.
- Mazzei, F.
- Derome, N.
| - Ozouf-Costaz, C.
- Hureau, J.-C.
- di Prisco, G.
| |
| Abstract | In the framework of the I.C.E.FISH (International Collaborative Effort on Antarctic Fish Adaptive Evolution) project, during the 1998-1999 season at the Italian shore-based Terra Nova Bay Station, the broad fields of adaptation and evolution of the fish suborder Notothenioidei were tackled through the integration of many disciplines. As a representative contribution of I.C.E.FISH, a cytogenetic study of the bathydraconid fish Gymnodraco acuticeps is reported. The Bathydraconidae is a heterogeneous notothenioid taxon whose intra-family relationships are very uncertain. The conventional karyotype and the location of nuclear ribosomal genes, by means of fluorescence in situ hybridisation, contributed to species-specific characterisation and provided the basis for comparative analyses. The karyotype of G. acuticeps consists of 48 chromosomes (2 metacentric, 2 submetacentric and 44 acrocentric); major ribosomal cistrons correspond to a large region in a single chromosome pair. Mapping of the available karyotypic data on a molecular phylogenetic tree provided information on chromosomal diversification during the cladogenesis of the bathydraconids. |
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