KARYOLOGICAL STUDY OF THE MEDITERRANEAN KRILL MEGANYCTIPHANES-NORVEGICA (EUPHAUSIACEA) - Université Pierre et Marie Curie Accéder directement au contenu
Article Dans Une Revue JOURNAL OF CRUSTACEAN BIOLOGY Année : 1995

KARYOLOGICAL STUDY OF THE MEDITERRANEAN KRILL MEGANYCTIPHANES-NORVEGICA (EUPHAUSIACEA)

Résumé

The chromosomes of Meganyctiphanes norvegica from the Mediterranean Ligurian Sea were investigated using standard Giemsa, silver staining, and C-banding. The karyotype of both sexes consists of 19 metacentric chromosome pairs of gradually decreasing size. Silver staining of male mitotic and meiotic metaphase showed, in all chromosomes, centromeric regions that appeared to be related to kinetochores rather than to nucleous-organizer regions. C-banding revealed centromeric constitutive heterochromatin in all chromosomes. No heteromorphic sex differentiation was observed. The karyotype of the krill Meganyctiphanes norvegica is reported here for the first time and will provide a basis for further cytogenetic investigation of species and populations of krill.

Domaines

Océanographie
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Dates et versions

hal-03479873 , version 1 (14-12-2021)

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Citer

C Thiriotquievreux, J Cuzinroudy. KARYOLOGICAL STUDY OF THE MEDITERRANEAN KRILL MEGANYCTIPHANES-NORVEGICA (EUPHAUSIACEA). JOURNAL OF CRUSTACEAN BIOLOGY, 1995, 15 (1), pp.79-85. ⟨10.2307/1549013⟩. ⟨hal-03479873⟩
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