First record of the freshwater bryozoan Pectinatella magnifica in north-west Russia with a description of sensory structures

• DOI: 10.15298/invertzool.18.3.09
• Publication Date: 2021-10-23T11:02:23Z
• Authors: Z. I. Starunova; K. V. Shunkina; E. A. Genelt-Yano...; A. V. Kucheryavyy; N. V. Polyakova; Y. A. Danilova; T. A. Ivanova; V. V. Starunov; O. V. Zaitseva
• Keywords: 0106 biological sciences; 01 natural sciences

Colonies of the freshwater bryozoan Pectinatella magnifica (Leidy, 1851) were found in north-west Russia for first time.As colonies have been observed Vuoksi river connecting Saimaa and Ladoga lakes, most likely this is a result downstream migration from Finland.Details general morphology P. distribution sensory structures on lophophore colony surface studied using scanning electron microscopy.Three types recorded.Two rows presumably immobile cilia latero-frontal surfaces tentacles, type common Bryozoa.One-two with bases surrounded by short microvilli detected abfrontal tentacles as well outer inner lophophoral arms.The mechanosensory function both these was assumed like other bryozoans.Sensory third microvillous 'knobs' situated colonial body wall surface.They described time Bryozoa.Their possible photosensory discussed.