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Testate Amoebae in Karst Caves of the Dinaric Arc (South-Eastern Europe) with a Description of Centropyxis bipilata sp. nov.

Publication date: 30.12.2019

Acta Protozoologica, 2019, Volume 58, Issue 4, pp. 201 - 215

https://doi.org/10.4467/16890027AP.19.018.12020

Authors

,
Najla Baković
DVOKUT-ECRO Ltd, Trnjanska 37, 10000 Zagreb, Croatia
Croatian Biospeleological Society, Demetrova 1, 10000 Zagreb, Croatia
ADIPA – Society for Research and Conservation of Croatian Natural Diversity, Orehovečki ogranak 37, 10040 Zagreb, Croatia
All publications →
,
Ferry J. Siemensma
Julianaweg 10, 1241VW Kortenhoef, the Netherlands
All publications →
,
Robert Baković
Croatian Biospeleological Society, Demetrova 1, 10000 Zagreb, Croatia
ADIPA – Society for Research and Conservation of Croatian Natural Diversity, Orehovečki ogranak 37, 10040 Zagreb, Croatia
All publications →
Josip Rubinić
University of Rijeka, Faculty of Civil Engineering, Radmile Matejčić 3, 51000 Rijeka, Croatia
All publications →

Abstract

Karst freshwater caves are subterranean habitats characterized by the constant absence of light and relatively small variations of temperature and air humidity. They are mostly food deprived environments, with the exception if large bat colonies are present or if they are intensively supplied with organic matter by sinking rivers. Even though these habitats are often described as harsh, they have enabled the evolution of highly specialized and often endemic animals. The cave eukaryotic micro-organisms, on the other hand, are scarcely researched. The results of research of testate amoebae in the caves of the Dinaric arc detected 23 species, 12 of which were first found in caves. Also, a description of Centropyxis bipilata sp. nov. is presented. This species is clearly distinguished from other described species based on shell size, the presence of two struts and the usually dark ring around the aperture. Testate amoebae were registered on aquatic and terrestrial cave sediments and transitional habitats (like hygropetric and wet walls). The most frequent species within the samples were: Trinema lineare, Cryptodifflugia oviformis and Centropyxis bipilata sp. nov. Maximum diversity of testate amoebae was registered in Ponor Kovači with twenty species. In 24.4 % of the investigated samples  microphototrophs were found, implying good surface-subsurface connectivity that could also affect testate amoebae diversity. This research showed that caves are underestimated habitats that can provide us with new data about the testate amoebae biogeography and diversity.

urn:lsid:zoobank.org:pub:14C0B57B-D69D-4A50-8AD3-24587BAF4241

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Information

Information: Acta Protozoologica, 2019, pp. 201 - 215

Article type: Original research article

Authors

DVOKUT-ECRO Ltd, Trnjanska 37, 10000 Zagreb, Croatia

Croatian Biospeleological Society, Demetrova 1, 10000 Zagreb, Croatia

ADIPA – Society for Research and Conservation of Croatian Natural Diversity, Orehovečki ogranak 37, 10040 Zagreb, Croatia

Julianaweg 10, 1241VW Kortenhoef, the Netherlands

Croatian Biospeleological Society, Demetrova 1, 10000 Zagreb, Croatia

ADIPA – Society for Research and Conservation of Croatian Natural Diversity, Orehovečki ogranak 37, 10040 Zagreb, Croatia

University of Rijeka, Faculty of Civil Engineering, Radmile Matejčić 3, 51000 Rijeka, Croatia

Published at: 30.12.2019

Article status: Open

Licence: CC BY-NC-ND  licence icon

Percentage share of authors:

Najla Baković (Author) - 25%
Ferry J. Siemensma (Author) - 25%
Robert Baković (Author) - 25%
Josip Rubinić (Author) - 25%

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Publication languages:

English

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