Chromosome morphology and banding patterns in Hydra oligactis Pallas and H. circumcincta Schultze (Hydroidea, Hydrida)

• Autorzy: B. Anokhin , V. Kuznetsova
• Języki publikacji: EN

Abstrakty

EN

Karyotypes of Hydra oligactis Pallas, 1766 (2n = 30, FN = 60) and H. circumcincta Schultze, 1914 (2n = 30, FN = 56) were studied in mitosis and meiosis, using routine Giemsa-staining and C- and Ag-bandings. It was shown that in H. oligactis, C-blocks are situated in centromere regions of all chromosomes. In H. circumcincta, NORs were found to be present in one of the larger chromosome pairs. The species have no morphologically distinguished sex chromosomes. They differ from each other in chromosome morphology, showing 30 M/SM/ST in the former and 26M/SM + 4A in the latter.

Słowa kluczowe

EN

BANDING PATTERN; CHROMOSOME MORPHOLOGY; HYDRA; HYDRIDA; HYDROIDEA; KARYOTYPE

• Czasopismo: Folia Biologica
• Rocznik: 1999
• Tom: 47
• Numer: 3-4
• Strony: 91-96

Twórcy

autor

B. Anokhin

autor

V. Kuznetsova

• Typ dokumentu: ARTICLE
• Bibliografia: B. Anokhin, Zoological Institute, Russian Academy of Sciences, Universitetskaya Nab. 1, St. Petersburg, 199034, Russia