Global diversity of gastrotrichs (Gastrotricha) in fresh waters

Balsamo, Maria; D'hondt, J.-L.; Kisielewski, Jacek; Pierboni, Lara

doi:10.1007/978-1-4020-8259-7_10

Cited by 19 publications

(31 citation statements)

References 14 publications

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“…Only about 70 freshwater species have been found in psammic habitats, and less than 35 species are known from sediments of running waters. Two entire families (Dasydytidae and Neogosseidae), with about 50 species, are semipelagic or fully planktonic: the colonization of water column corresponds to specific, characteristic morphological adaptations (Kisielewski 1981, Kisielewski 1990, Schwank 1990, Ricci and Balsamo 2000, Balsamo et al 2008, Todaro et al 2013, Kånneby and Todaro 2015). …”

Section: General Descriptionmentioning

confidence: 99%

Fauna Europaea: Gastrotricha

Balsamo¹,

D'hondt²,

Kisielewski³

et al. 2015

BDJ

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Fauna Europaea provides a public web-service with an index of scientific names (including important synonyms) of all living European land and freshwater animals, their geographical distribution at country level (up to the Urals, excluding the Caucasus region), and some additional information. The Fauna Europaea project covers about 230,000 taxonomic names, including 130,000 accepted species and 14,000 accepted subspecies, which is much more than the originally projected number of 100,000 species. This represents a huge effort by more than 400 contributing specialists throughout Europe and is a unique (standard) reference suitable for many users in science, government, industry, nature conservation and education.Gastrotricha are a meiobenthic phylum composed of 813 species known so far (2 orders, 17 families) of free-living microinvertebrates commonly present and actively moving on and into sediments of aquatic ecosystems, 339 of which live in fresh and brackish waters. The Fauna Europaea database includes 214 species of Chaetonotida (4 families) plus a single species of Macrodasyida incertae sedis. This paper deals with the 224 European freshwater species known so far, 9 of which, all of Chaetonotida, have been described subsequently and will be included in the next database version. Basic information on their biology and ecology are summarized, and a list of selected, main references is given. As a general conclusion the gastrotrich fauna from Europe is the best known compared with that of other continents, but shows some important gaps of knowledge in Eastern and Southern regions.

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Section: General Descriptionmentioning

confidence: 99%

Fauna Europaea: Gastrotricha

Balsamo¹,

D'hondt²,

Kisielewski³

et al. 2015

BDJ

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“…The most recent and comprehensive contributes to the taxonomy of the phylum have been realized by Hummon (2009) and Hummon & Todaro (2010) on marine species, and by Schwank (1990), Kisielewski ( , 1998, Balsamo et al (2009) on freshwater species. Active studies have been performed on the fine morphology and molecular features of numerous species with the aim to define the intra-phylum phylogeny.…”

Section: Introductionmentioning

confidence: 99%

“…Due to slightly differences between current taxonomical schemes, we specify that the present list is mainly based on the classifications followed by Hummon & Todaro (2010) as concerns Macrodasyida and by Balsamo et al (2009) …”

Section: Introductionmentioning

confidence: 99%

Phylum Gastrotricha. In: Zhang, Z.-Q. (Ed.) Animal Biodiversity: An Outline of Higher-level Classification and Survey of Taxonomic Richness (Addenda 2013)

Balsamo¹,

Guidi²,

D'hondt³

2013

Zootaxa

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An updated classification of the two orders of the phylum is provided up to family level, and numbers of genera and species described so far are specified. The phylum is composed of two orders: Macrodasyida, with, 9 families, 33 genera (+1 genus incertae sedis) and 338 species (+1 species incertae sedis), and Chaetonotida, with 8 families, 30 genera and 454 species. Current taxonomy is relatively stable for the order Macrodasyida, except for the presence of a monotypic genus which cannot yet be assigned with certainty to any of the existing families. On the contrary, the taxonomy of the order Chaetonotida has been repeatedly revised in the last decades and is still unstable. An integrate taxonomical approach on morphological and molecular bases appears necessary in order to revise the current classification according to phylogenetic relationships.

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“…Gastrotricha are aquatic free-living microinvertebrates (< 1 mm), with a worldwide distribution in freshwater, estuarine, and marine benthic habitats where they are an important component of the benthos and periphyton (Hochberg and Litvaitis 2000; Balsamo and Todaro 2002; Balsamo et al 2005, 2008). Although many species are common and occasionally abundant, freshwater gastrotrichs are still insufficiently known, possibly due to their microscopical size, body fragility, which make their study very difficult (Hochberg and Litvaitis 2000; Balsamo and Todaro 2002; Balsamo et al 2005, 2008).…”

Section: Introductionmentioning

confidence: 99%

New data on freshwater psammic Gastrotricha from Brazil

Garraffoni¹,

Araújo²,

Lourenço³

et al. 2010

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Current knowledge of freshwater gastrotrich fauna from Brazil is underestimated as only two studies are available. The present communication is a taxonomic account of the first-ever survey of freshwater Gastrotricha in Minas Gerais State. Samplings were carried out yielding six species of three Chaetonotidae genera: Aspidiophorus cf. pleustonicus, Ichthydium cf. chaetiferum, Chaetonotus acanthocephalus, Chaetonotus heideri, Chaetonotus cf. succinctus, Chaetonotus sp., and also an undescribed species belonging to the genus Redudasys (incertae sedis): this is the first finding of specimens of Redudasys outside of original type locality. These preliminary observations suggest that the knowledge of the biodiversity of Gastrotricha in the Minas Gerais State, as well as in the whole Brazil, will certainly increase as further investigations are undertaken, and that freshwater Macrodasyida may be more common than previously thought.

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Global diversity of gastrotrichs (Gastrotricha) in fresh waters

Cited by 19 publications

References 14 publications

Fauna Europaea: Gastrotricha

Fauna Europaea: Gastrotricha

<span style="font-size: small;"><span style="font-family: 'Times New Roman';"><span lang="EN-US">Phylum Gastrotricha. In: Zhang, Z.-Q. (Ed.) Animal Biodiversity: An Outline of Higher-level Classification and Survey of Taxonomic Richness (Addenda 2013) </span></span></span>

New data on freshwater psammic Gastrotricha from Brazil

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