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Ultrastructure and 3D reconstruction of the tun in Richtersius coronifer (Richters, 1903)
Högskolan Kristianstad, Sektionen för lärande och miljö, Avdelningen för Naturvetenskap. Högskolan Kristianstad, Forskningsmiljön Man & Biosphere Health (MABH). Charles University, Prague.
Polen.
Högskolan Kristianstad, Forskningsmiljön Man & Biosphere Health (MABH). Högskolan Kristianstad, Sektionen för lärande och miljö, Avdelningen för Naturvetenskap.ORCID-id: 0000-0002-1732-0372
Polen.
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2016 (Engelska)Konferensbidrag, Poster (med eller utan abstract) (Refereegranskat)
Abstract [en]

Anhydrobiosis is one of the types of cryptobiosis that is caused by lack of water (desiccation). Formation of a tun seems to be the most important morphological adaptation for entering anhydrobiotic state. During this process the tardigrade body undergo anterior-posterior contraction that causes relocation of some organs such as the pharyngeal bulb. The tun wall of Richtersius coronifer (Eutardigrada,  Macrobiotidae) was composed of multilayered cuticle and epidermis. The epidermis consisted of the single squamous epithelium whose cells were shrunken whereas  the cuticle was composed of epi-, intra- and procuticle, flocculent coat and trilaminate layer. The storage cells of desiccated specimens filled up free inner space and surrounded the internal organs (ovary, digestive system) that were contracted. All cells of the body underwent shrinking and their metabolism was arrested. The cytoplasm of all cells was electron dense but the basic morphology of cells and organelles did not differ between active and anhydrobiotic animals. The structure and the ultrastructure of the desiccated Richtersius coronifer have been described with light and confocal microscopy as well as transmission and scanning electron microscopy. 3D reconstruction of tun based on the series of semi-thin sections was prepared with IMARIS 8.2 software (Bitplane).

Ort, förlag, år, upplaga, sidor
2016.
Nyckelord [sv]
björndjur, tardigrada
Nationell ämneskategori
Zoologi
Identifikatorer
URN: urn:nbn:se:hkr:diva-15944OAI: oai:DiVA.org:hkr-15944DiVA, id: diva2:958349
Konferens
ARTHROPOD 2016 Conference, 1-3 July, University of Silesia, Katowice
Tillgänglig från: 2016-09-06 Skapad: 2016-09-06 Senast uppdaterad: 2016-10-12Bibliografiskt granskad

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Jönsson, K. Ingemar

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Avdelningen för NaturvetenskapForskningsmiljön Man & Biosphere Health (MABH)
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