New data on limno-terrestrial rotifers of the world

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Lukashanets D, Iakovenko N, Fontaneto D, Devetter M, Janko K, Ejsmont-Karabin J, Bielańska-Grajner I, Hallet B, Smykla J, Kozeretska I, Trokhymets V (2025). New data on limno-terrestrial rotifers of the world. Version 1.9. Marine Research Institute, Klaipeda University. Occurrence dataset. https://cloud.gbif.org/eca/resource?r=limno-terrestrial_rotifera&v=1.9

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此資料的發布者及權利單位為 Marine Research Institute, Klaipeda University。 This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.

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此資源已向GBIF註冊，並指定以下之GBIF UUID: 0190c60e-e4fe-444d-b0f3-3be8368c2e0a。  Marine Research Institute, Klaipeda University 發佈此資源，並經由Participant Node Managers Committee同意向GBIF註冊成為資料發佈者。

關鍵字

Bdelloidea; Rotifera; moss; lichen; soil

聯絡資訊

地理涵蓋範圍

The dataset includes records collected throughout the world, spanning latitudes from 77.94° S to 78.28° N and covering all continents: (i) Europe – Austria, Belarus, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany, Great Britain and Northern Ireland, Greece, Hungary, Italy, Latvia, Lithuania, Montenegro, Netherlands, North Macedonia, Norway, Poland, Portugal, Russian Federation (Karelia and Caucasus), Serbia, Slovakia, Spain, Sweden, Switzerland, Ukraine; also including the European Arctic (Bear Island, Iceland, Jan Mayen, Svalbard) and Mediterranean islands (Mallorca, Malta, Menorca, Pantelleria, Sardinia); (ii) Asia – Armenia, Brunei, China, Cyprus, Georgia, India, Japan, Kyrgyzstan, Malaysia, Myanmar, Nepal, Russian Federation (Southern Siberia), Taiwan, Tajikistan, Turkey; (iii) Africa – Democratic Republic of Congo, Lesotho, Tunisia; also including Macaronesia (Canary Islands, Madeira); (iv) North America – western Greenland, USA (contiguous states and Alaska); also including the Caribbean (Martinique); (v) South America – Brazil, Chile; (vi) Australia and Oceania – Australia (mainland and Tasmania), New Zealand, Papua New Guinea; (vii) Antarctica – maritime Antarctic (Antarctic Peninsula, Argentine Islands, James Ross Island, King George Island), and continental Antarctic (Dronning Maud Land, Enderby Land, Victoria Land and Ross Sea Region)

分類群涵蓋範圍

The dataset includes all records belonging to Phylum Rotifera, which we found in the samples of soil, moss, lichen and other limno-terrestrial habitats. Monogonont rotifers (order Ploima) accounted for only 1.36 % the records, whilst the majority of records were bdelloids (order Bdelloidea). Species with uncertain affiliation or potentially new for science were indicated as Genus sp., those different from the nominal description (mostly potentially new) are designated as cf. Of note, 10 species among found were not typical for limno-terrestrial habitats but rather occur in swamps and temporary water bodies (f. ex. Philodina flaviceps, Synchaeta sp.). Their encounter on terrestrial vegetation is most likely the result of the proximity to the water bodies and/or high humidity of the habitat.

時間涵蓋範圍

計畫資料

The project deals with the Latitudinal diversity gradient (LDG), which is one of the important biodiversity structural characteristics that in its initial concept refers to the quantitative changes (increase or decrease) of species richness from the poles to the equator. In most terrestrial macroorganisms LDG is characterized by higher diversities near the equator, while aquatic species tend to increase diversity toward the poles. However, for the microfauna, especially for so-called limno-terrestrial organisms (inhabitants of wet soil, moss and lichens), the presence and shape of LDG are still unclear. The main aim of the proposed project is to estimate the prominence and shape of global LDG in limno-terrestrial bdelloid rotifers (Bdelloidea; Rotifera). The general strategy of the project implies the employment of both conventional and metabarcoding techniques (extraction and sequencing of total DNA from the already collected frozen soil and moss samples) to estimate diversity metrics and compare them. Secondary, the project aims at inventarization of rotifer biodiversity in less studied studied regions, especially in Arctic and Antarctic. Two European Universities are involved in the project: Klaipeda University (KU) as lead applicant and Czech University of Life Sciences Prague (CZU) as co-applicant.

參與計畫的人員:

取樣方法

For the analysis of limno-terrestrial rotifers, sampling was performed mainly in forest ecosystems (taiga, boreal and mixed forests, subtropical forests, tropical rainforests), flatlands, urban areas, and agricultural landscapes. In polar areas, we conducted sampling in moss tundra, at post-glacial moraine, in Antarctic oases and nunataks. Samples of soil and litter were collected using 3.8 cm metal corer or metal scoops. Lichens, mosses, and other vegetation were picked from the ground, tree barks, and stones using tweezers or simply by hands. The size of the samples varied from a few cm3 to several dozen cm3, depending on the amount of material available for collection. All samples were placed in paper of plastic bags and properly labelled. All sampling sites were georeferenced.

方法步驟描述:

1. Microscopic animals were isolated from each sample. For this, soil, litter, timber, fungi or pieces of vegetation (mosses, lichen) were washed on the system of sieves, followed by flotation and centrifugation in a sugar solution (Freckman, Virginia, 1993). Alternatively, the method for extracting moss-dwelling rotifers described by Peters et al. (1993) was used.
2. Rotifers were counted and sorted under a binocular microscope (Olympus SZ61, Olympus SZX10, NR.3 Nikon SMZ1000).
3. For species identification, live rotifer individuals were transferred to slides and examined using light microscopy (Nikon Eclipse Ts2R, NIB-100F inverted microscope, Olympus CX43). First descriptions of taxa and the existing identification keys were used: Donner (1965), Bartoš (1951, 1959), Kutikova (2005). Body dimensions and proportions were measured following the protocol of Iakovenko et al. (2013, 2015).
4. Rotifer densities were equalized to 25 cm3 (measured as 25 mL standard sample of the dried substrate using a plastic tube). In case when the sample volume was smaller, it was measured, and rotifer densities were counted per sample and then recalculated to 25 cm3. The standard sample volume was chosen empirically as a minimal volume feasible to collect in which rotifer diversity was adequately represented.

引用文獻

1. Iakovenko NS, Smykla J, Convey P, Kašparová E, Kozeretska IA, Trokhymets V, Dykyy I, Plewka M, Devetter M, Duriš Z, Janko K (2015) Antarctic bdelloid rotifers: diversity, endemism and evolution. Hydrobiologia 761, 5-43. https://doi.org/10.1007/s10750-015-2463-2
2. Freckman DW, Virginia RA (1993) Extraction of nematodes from Dry Valley Antarctic soils. Polar Biology 13, 483–487. https://doi.org/10.1007/BF00233139
3. Peters U, Koste W, Westheide W (1993) A quantitative method to extract moss-dwelling rotifers. Hydrobiologia 255, 339–341. https://doi.org/10.1007/BF00025857
4. Kutikova LA (2005) The Bdelloid rotifers of the fauna of Russia. KMK Scientific Press Ltd. Moscow. [In Russian]
5. Donner J (1965) Ordnung Bdelloidea (Rotatoria, Rädertiere). Akademie Verlag. [in German]
6. Bartoš E (1959) Virnici - Rotatoria. Vol. 15. Fauna CSR. Nakladatelstvi Ceskoslovenske Akademie Ved. Praha [in Czech]
7. Bartoš E (1959) The Czechoslovak Rotatoria of the order Bdelloidea. Vestnik Ceskoslovenske Zoologicke Spolecnosti 15, 241–500.
8. Iakovenko NS, Kašparová E, Plewka M, Janko K (2013) Otostephanos (Rotifera, Bdelloidea, Habrotrochidae) with the description of two new species. Systematics and Biodiversity 11 (4), 477-494. https://doi.org/10.1080/14772000.2013.857737

額外的詮釋資料