Comparative anatomy of pectoral girdle and pectoral fin in Russian sturgeon and American paddlefish

• Autorzy: Grom K. , Pasicka E. , Tarnawski K.
• Języki publikacji: EN

Abstrakty

EN

Acipenseriformes occupy an important place in the evolutionary history. Skeleton of their pectoral fins has elements related to teleosts, but also to tetrapods. This article summarises and compares anatomical structure of the pectoral girdle and pectoral fin of Russian sturgeon (Acipenser gueldenstaedtii) and American paddlefish (Polyodon spathula). These species possess pectoral fins with some distinctive features in their structure. The pectoral girdles are composed of both cartilaginous and ossified elements. Unlike sturgeons, American paddlefish does not have an interclavicle and suprascapular cartilage. Moreover, its cleithrum doesn’t form medially directed lamina. The quantity of the proximal radials in the investigated fish species are not the same. The dorsal and ventral muscles, which act on the pectoral fin of Russian sturgeon and American paddlefish, are not equally developed. In our opinion, this is caused by the differences in the mode of life, motility of fins, as well as by stabilisation of body during swimming. (Folia Morphol 2016; 75, 2: 173–178)

• Wydawca: -
• Czasopismo: Folia Morphologica
• Rocznik: 2016
• Tom: 75
• Numer: 2
• Opis fizyczny: p.173-178,fig.,ref.

Twórcy

autor

Grom K.

• Department of Animal Anatomy, National University of Life and Environmental Sciences of Ukraine, Kiev, Ukraine

autor

Pasicka E.

• Division of Animal Anatomy, Department of Biostructure and Animal Physiology, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, Kozuchowska 1/3, 51–631 Wroclaw, Poland

autor

Tarnawski K.

• Environmental Engineering Institute, Wrocław University of Environmental and Life Sciences, Wroclaw, Poland

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Identyfikatory

DOI

10.5603/FM.a2015.0093