The karyotype of the great sculpin, Myoxocephalus polyacanthocephalus (Pallas, 1814) (Pisces: Cottidae), from the Russian part of the species range
- Authors: Moreva I.N.1, Borisenko S.A.1
-
Affiliations:
- Zhirmunsky Institute of Marine Biology, National Scientific Center of Marine Biology, Far Eastern Branch
- Issue: Vol 43, No 1 (2017)
- Pages: 76-82
- Section: Original Papers
- URL: https://journals.rcsi.science/1063-0740/article/view/183863
- DOI: https://doi.org/10.1134/S1063074017010096
- ID: 183863
Cite item
Abstract
The karyotype of the great sculpin, Myoxocephalus polyacanthocephalus (Pallas, 1814) (Pisces: Cottidae) from the Sea of Okhotsk and the Sea of Japan has been studied for the first time. The karyotype is stable; it consists of 40 chromosomes (4 metacentric, 2 submeta-subtelocentric, 20 subtelocentric, and 14 acrocentric chromosomes); the number of chromosomal arms is 44 + 2. Nucleolar organizer regions (NOR) are found in the telomeric region of the arm in one homologue of a pair of small metacentric chromosomes, using the Ag-NOR banding technique. A comparative analysis of the karyotype of M. polyacanthocephalus and the karyotypes of other Myoxocephalus species (M. stelleri, M. brandtii, M. jaok, M. ochotensis, and M. scorpius) has been carried out based on the main karyotype characters, as well as on the number and localization of NORs. The identified differences make it possible to differentiate the studied species, whereas the general traits indicate their taxonomic proximity.
About the authors
I. N. Moreva
Zhirmunsky Institute of Marine Biology, National Scientific Center of Marine Biology, Far Eastern Branch
Author for correspondence.
Email: irruz@yandex.ru
Russian Federation, Vladivostok, 690041
S. A. Borisenko
Zhirmunsky Institute of Marine Biology, National Scientific Center of Marine Biology, Far Eastern Branch
Email: irruz@yandex.ru
Russian Federation, Vladivostok, 690041