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. (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
In: Arntz, W.E.; Clarke, A. (Ed.) (2002). Ecological studies in the Antarctic sea ice zone: Results of EASIZ Midterm Symposium. Springer: Berlin. ISBN 3-540-43218-3. 277 pp., meer
Is gerelateerd aan: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, meer
|
Trefwoorden |
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] Marien/Kust |
Auteurs | | 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. |
|