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Titolo:
Genetic structure of Norway lobster, Nephrops norvegicus (L.) (Crustacea :Nephropidae), from the Mediterranean Sea
Autore:
Maltagliati, F; Camilli, L; Biagi, F; Abbiati, M;
Indirizzi:
Univ Pisa, Dipartimento Sci Uomo Ambiente, I-56126 Pisa, Italy Univ Pisa Pisa Italy I-56126 ento Sci Uomo Ambiente, I-56126 Pisa, Italy
Titolo Testata:
SCIENTIA MARINA
, volume: 62, anno: 1998, supplemento:, 1
pagine: 91 - 99
SICI:
0214-8358(199812)62:<91:GSONLN>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
POPULATION; DIFFERENTIATION; DECAPODA;
Keywords:
allozyme electrophoresis; genetic variation; genetic distance; population subdivision; island model; Nephrops norvegicus; crustaceans; Mediterranean;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Maltagliati, F Univlyisa, Dipartimento Sci Uomo Ambiente, Via A Volta 6, I-56126 Pisa, Ita Univ Pisa Via A Volta 6 Pisa Italy I-56126 56126 Pisa, Ita
Citazione:
F. Maltagliati et al., "Genetic structure of Norway lobster, Nephrops norvegicus (L.) (Crustacea :Nephropidae), from the Mediterranean Sea", SCI MAR, 62, 1998, pp. 91-99

Abstract

The population genetic structure of the Mediterranean Norway lobster was studied by means of cellulose acetate allozyme electrophoresis. Populations from one Atlantic and eight Mediterranean localities were sampled. The 15 enzyme systems analysed gave 23 presumptive gene loci, 11 of which were polymorphic. The analysis of genotypic and allelic frequencies revealed levels of genetic polymorphism comparable with those of studied decapods: mean heterozygosities ranged from 0.052 (se 0.025) to 0.142 (se 0.040). The values of Nei's genetic distance index showed moderate genetic differentiation between geographical regions and no geographical pattern of genetic differentiation was detected by UPGMA cluster analysis. Moreover no clear dines in allelic frequencies were detected, thus genetic variability seems to be randomly distributed among populations and Nephrops norvegicus seems to follow the island model of genetic structure. The degree of genetic subdivision of the species is confirmed by the mean value of the standardised variance in allelic frequencies (F-ST = 0.122), giving an estimate of gene flow, Nm = 1.80.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 13:20:27