Nom du corpus

Corpus Systématique Animale

Titre du document

Genetic evidence for reproductive isolation of the recently described unicornfish Naso caesius and its sibling N. hexacanthus

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Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Poissons_v2b_002226
Auteur(s)
  • C. Dayton 1
  • A. C. Santayana 1
  • J. M. Lacson 1
Affiliation(s)
  • 1) Marine Laboratory, University of Guam, 96923, Mangilao, Guam, USA
Résumé

The recently described unicornfish, Naso caesius (Acanthuridae; subfamily Nasinae), was distinguished from a very similar congener, N. hexacanthus, by differences in tongue, body and lower lip coloration, shape of the pair of bladelike caudal spines, and presence or absence of a black border on the opercle and preopercle. We describe the biochemical genetics of these geminate species from fish collected arround Guam, Southern Marianas. We found: (1) a fixed allelic difference at the locus encoding muscle creatine kinase (CK-A *); (2) “private” [i.e., found in one operational taxonomic unit (OTU) but not in the other] alleles in relatively high frequency at the locus encoding lactate dehydrogenase (LDH-A *); and (3) significantly different allele frequencies at a locus encoding aspartate aminotransferase (AAT-2 *) and at LDH-A * and PGM *. Our detection of diagnostic electrophoretic markers contrasts with results of an allozymic survey mentioned in the original description of N. caesius. The fixed allelic difference among operational taxonomic units collected in sympatry provides a further taxonomic criterion by which N. caesius and N. hexacanthus can be distinguished. The absence of electrophoretically recognizable hybrids provides evidence that N. caesius and N. hexacanthus are reproductively isolated within our study area.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - marine biology & hydrobiology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - cytologie, morphologie, systematique, floristique et evolution des vegetaux
Catégories Scopus
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Ecology
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Aquatic Science
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
Catégories WoS
  • 1 - science ; 2 - marine & freshwater biology
Identifiant ISTEX
0F8EE031C323E3EAE9770AB30E51E77C768137BE
Revue

Marine Biology

Année de publication
1994
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
6.436
Sous-corpus
  • Poissons
Type de publication
Journal
ark:/67375/1BB-6L3QTQ4Q-G
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