| Title | Tracking adaptive evolution in the structure, function and molecular phylogeny of haemoglobin in non-Antarctic notothenioid fish species |
| Author | Verde, C.; Parisi, E.; di Prisco, G. |
| Author Affil | Verde, C., CNR, Institute of Protein Biochemistry, Naples, Italy. Other: Alfred-Wegener-Institut für Polar- und Meeresforschung, Federal Republic of Germany |
| Source | EASIZ; ecology of the Antarctic sea ice zone. Deep-Sea Research. Part II: Topical Studies in Oceanography, 53(8-10), p.1105- 1114; [EASIZ; ecology of the Antarctic sea ice zone final symposium, Korcula, Croatia, Sept. 27-Oct. 1, 2004]; edited by A. Clarke, W.E. Arntz and C.R. Smith. Publisher: Elsevier, Oxford, International. ISSN: 0967- 0645 |
| Publication Date | Apr., 2006 |
| Notes | In English. Based on Publisher- supplied data GeoRef Acc. No: 301073 |
| Index Terms | Antarctica; Southern Ocean; Actinopterygii; adaptation; biochemistry; biologic evolution; Chordata; hemoglobin; living taxa; Notothenia angustata; Notothenioidei; Osteichthyes; Perciformes; phylogeny; physiology; Pisces; Pseudaphritis urvillii; Teleostei; Vertebrata |
| Abstract | With the notable exception of Antarctic icefishes, haemoglobin (Hb) is present in all vertebrates. In polar fish, Hb evolution has included adaptations with implications at the biochemical, physiological and molecular levels. Cold adaptation has been shown to be also linked to small changes in primary structure and post-translational modifications in proteins, including hydrophobic remodelling and increased flexibility. A wealth of knowledge is available on the oxygen-transport system of fish inhabiting Antarctic waters, but very little is known on the structure and function of Hb of non-Antarctic notothenioid fishes. The comparison of the biochemical and physiological adaptations between cold- adapted and non-cold-adapted species is a powerful tool to understand whether (and to what extent) extreme environments require specific adaptations or simply select for phenotypically different life styles. This study focuses on structure, function and molecular phylogeny of Hb in Antarctic and non-Antarctic notothenioid fishes. The rationale is to use the primary structure of Hb as tool of choice to gain insight into the pathways of the evolution history of alpha and beta globins of notothenioids and also as a basis for reconstructing the phylogenetic relationships among Antarctic and non-Antarctic species. |
| URL | http://hdl.handle.net/10.1016/j.dsr2.2006.03.005 |
| Publication Type | conference paper or compendium article |
| Record ID | 88824 |