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Titolo:
CYTOGENETICS OF THE ANTARCTIC ICEFISH CHAMPSOCEPHALUS-GUNNARI LONNBERG, 1905 (CHANNICHTHYIDAE, NOTOTHENIOIDEI)
Autore:
PISANO E; OZOUFCOSTAZ C; BONILLO C; CAIMO A; ROSSETTI S; WILLIAMS R;
Indirizzi:
UNIV GENOA,INST COMPARAT ANAT,VIALE BENEDETTO XV,5 I-16132 GENOA ITALY MUSEUM NATL HIST NAT,LAB ICHTYOL F-75231 PARIS 05 FRANCE OSPED SAN MARTINO GENOVA,LAB CITOGENET GENOA ITALY AUSTRALIAN ANTARCTIC DIV KINGSTON TAS AUSTRALIA
Titolo Testata:
Comparative biochemistry and physiology. Part A, Molecular & integrative physiology
fascicolo: 4, volume: 118, anno: 1997,
pagine: 1087 - 1094
SICI:
1095-6433(1997)118:4<1087:COTAIC>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
SEX-CHROMOSOME SYSTEM; FISHES; PERCIFORMES; PISCES; DIFFERENTIATION; MITOCHONDRIAL; EVOLUTION; POECILIA;
Keywords:
ANTARCTIC FISHES; CHANNICHTHYIDAE; CHROMOSOMES; CYTOGENETICS; EVOLUTION; PHYLOGENY; MOLECULAR CYTOGENETICS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
49
Recensione:
Indirizzi per estratti:
Citazione:
E. Pisano et al., "CYTOGENETICS OF THE ANTARCTIC ICEFISH CHAMPSOCEPHALUS-GUNNARI LONNBERG, 1905 (CHANNICHTHYIDAE, NOTOTHENIOIDEI)", Comparative biochemistry and physiology. Part A, Molecular & integrative physiology, 118(4), 1997, pp. 1087-1094

Abstract

Traditional karyotyping and molecular cytogenetic techniques were used to study the chromosomes of Champsocephalus gunnari from the Indian Sector of the Antarctic Ocean. C. gunnari has 24 pairs of chromosomes,giving a diploid number of 48. Most are acrocentric, six are metacentric and submetacentric and the level of divergence from the supposed ancestral notothenioid karyotype remains low. The chromosomal features of this icefish do not differ very much from those of the other channichthyids, the karyotypic macrostructure being kept stable in these fishes. Although providing relevant basic biological information, traditional cytogenetics do not allow a significant comparative analysis between species in this notothenioid family. Molecular cytogenetic techniques such as in situ hybridization have been successfully used on C. gunnari, opening new opportunities for a deeper characterization of Antarctic fish chromosomes. The in situ location of specific DNA sequencescould provide valuable new information for phylogenetic reconstruction, and shed light on the relationship between chromosome change and the evolutionary process. (C) 1997 Elsevier Science Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 00:20:46