First description of karyotypes and localization of ribosomal genes in two sand lances (Perciformes: Ammodytidae); small sand eel (Ammodytes tobianus Linnaeus, 1758) and great sand eel (Hyperoplus lanceolatus (Le Sauvage, 1824))
Lech Kirtiklis , Katarzyna Mojsa , Konrad Ocalewicz
AbstractThe sand lances also known as sand eels are small fish belonging to family Ammodytidae. These elongated and slender fishes are able to dive into sand to escape predators. Ammodytidae consists of 31 species belonging to seven genera. Despite world-wide distribution, sand lances have rarely been objects of cytogenetic studies. In present research, chromosomes of small sand eel and great sand eel from Gulf of Gdansk (Baltic Sea) have been analysed. Karyotypes of both species were composed of 48 acrocentric chromosomes (FN= 48). Tiny DAPI positive sites were found in the pericentromeric locations of a few sand lances chromosomes. On the contrary, relatively large blocks of NOR-related DAPI-negative chromatin was observed on two chromosomes from small sand eel. Centromeric regions of both fishes studied were resistant to the Hinf I and Dde I restriction endonucleases digestion. Major and minor rDNA sites were observed on separate chromosome pairs in both examined species. The presented results allowed us to describe the karyotypes of small sand eel and great sand eel, and brought new data regarding organization of the perciform genome related to the largest group of fishes in the world.
|Journal series||Comparative Cytogenetics, ISSN 1993-0771, (A 15 pkt)|
|Publication size in sheets||0.3|
|Conference||23rd International Colloquium on Animal Cytogenetics and Genomics (ICACG), 09-06-2018 - 12-06-2018, Saint-Petersburg, Rosja|
|License||Journal (articles only); published final; ; with publication|
|Not used for evaluation||yes|
|Publication indicators||= 0; : 2018 = 0.549; : 2018 = 0.882 (2) - 2018=1.065 (5)|
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