Global diversity of tardigrades (Tardigrada) in freshwater

Garey, James R.; McInnes, Sandra J.; Nichols, P. Brent

doi:10.1007/s10750-007-9123-0

Cited by 18 publications

(3 citation statements)

References 14 publications

(19 reference statements)

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“…According to a study conducted on Global distribution of tardigrades in freshwater by (Garey et al, 2008), out of 910 species, only 62 species representing 13 genera were found to be the only ones in aquatic habitats. Five genera namely Carphania, Dactylobiotus, Macroversum, Pseudobiotus, and Thermozodium were found to be exclusively aquatic while other genera like Hypsibius, Isohypsibius, Amphibolus, Mixibius had some species that were aquatic as per the study.…”

Section: Global Distribution Of Tardigradesmentioning

confidence: 99%

Water Bears in the Land of Diversity: A Comprehensive Review of Tardigrades in India

Perez,

Daryani

2023

LFWB

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Tardigrades, also known as water bears, are a group of microscopic invertebrates with four pairs of stout legs. They are known to be found in freshwater, terrestrial and marine environments. An exceptional feature of the tardigrades is their ability to withstand extreme low temperatures, desiccation and other such severe environmental conditions. Globally, 70.8% of the earth is covered with the oceans and seas, while the Indian Ocean accounts for 29% of the global ocean area and is known to be a region of high biodiversity, where India is one of the countries. Tardigrades are known to form a habitat with mosses, lichens, freshwater ecosystems, oceans, and Himalayas in India. One of the main areas of research on tardigrades in India is the diversity and distribution of tardigrade species in different regions of the country, however, very few studies have been conducted on this phylum. Tardigrades have become the subject of increasing interest due to their potential economic importance like their significance in environmental monitoring and space research. Lastly, this phylum needs to be explored in terms of the species distribution and their economic importance, making them a valuable resource for India.

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Section: Global Distribution Of Tardigradesmentioning

confidence: 99%

Water Bears in the Land of Diversity: A Comprehensive Review of Tardigrades in India

Perez,

Daryani

2023

LFWB

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“…Evidence of such large reticulate amoebae in the lichen samples could indicate predation on portions of the lichen hyphae. The diet of tardigrades is typically plant matter or smaller invertebrates, including protozoa and rotifers (Garey et al 2008;Glime 2013). They also consume bacteria and fungi (Kinchin 1988) as well as feeding on nematodes (S anchez-Moreno et al 2008).…”

Section: Micro-ecosystemmentioning

confidence: 99%

Microbial Communities Associated with Tree Bark Foliose Lichens: A Perspective on their Microecology

Anderson

2014

J Eukaryotic Microbiology

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Tree-bark, foliose lichens occur widely on a global scale. In some locales, such as forests, they contribute a substantial amount of biomass. However, there are few research reports on microbial communities including eukaryotic microbes associated with foliose lichens. Lichens collected from tree bark at 11 locations (Florida, New York State, Germany, Australia, and the Arctic) were examined to determine the density and C-biomass of bacteria and some eukaryotic microbes, i.e. heterotrophic nanoflagellates (HNF) and amoeboid protists. A rich microbial diversity was found, including large plasmodial slime molds, in some cases exceeding 100 μm in size. The densities of HNF and amoeboid protists were each positively correlated with densities of bacteria, r = 0.84 and 0.80, respectively (p < 0.01, N = 11 for each analysis) indicating a likely bacterial-based food web. Microbial densities (number/g lichen dry weight) varied markedly across the geographic sampling sites: bacteria (0.7-13.1 × 10(8) ), HNF (0.2-6.8 × 10(6) ) and amoeboid protists (0.4-4.6 × 10(3) ). The ranges in C-biomass (μg/g lichen dry weight) across the 11 sites were: bacteria (8.8-158.5), HNF (0.03-0.85), and amoeboid protists (0.08-540), the latter broad range was due particularly to absence or presence of large slime mold plasmodia.

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“…Most of the known non-marine tardigrade species live on terrestrial substrates such as mosses, liverworts, cushion-shaped plants, lichens, and leaf litter. Some of these species also occur in freshwater habitats, while others are found exclusively therein [1,3].…”

Section: Introductionmentioning

confidence: 99%

Limno-Terrestrial Tardigrada of Sub-Antarctic Islands—An Annotated Review

Degma,

Gábrišová

2023

Diversity

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Research on the limno-terrestrial Tardigrada fauna of the Sub-Antarctic zone began almost 120 years ago. Here we present an overview of the literature data on the presence of tardigrades on sub-Antarctic islands, including the substrates on which they have been found. From 32 published sources, we found original data on the occurrence of 49 currently valid species on six sub-Antarctic islands/island groups. Of these, 9 species (18%) were originally described from this zone, another 13 species (26%) were described from Continental or Maritime Antarctica, almost half of these species (22 species—45%) were originally described from European localities, and the remaining 5 species (10%) were originally described from South America, Africa, or Australia. The validity of the records of individual species is discussed. We consider the presence of 29 species in the Sub-Antarctic to be doubtful. We ascertained a total of 90 combinations of species and islands or island groups. More than half (64%) of these will require confirmation in the future because we currently consider them doubtful. We can conclude that the tardigrade fauna of the sub-Antarctic islands is only very superficially known, and the occurrence of most species in this zone must be verified.

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Global diversity of tardigrades (Tardigrada) in freshwater

Cited by 18 publications

References 14 publications

Water Bears in the Land of Diversity: A Comprehensive Review of Tardigrades in India

Water Bears in the Land of Diversity: A Comprehensive Review of Tardigrades in India

Microbial Communities Associated with Tree Bark Foliose Lichens: A Perspective on their Microecology

Limno-Terrestrial Tardigrada of Sub-Antarctic Islands—An Annotated Review

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