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The widely used small subunit 18S rDNA molecule greatly underestimates true diversity in biodiversity surveys of the meiofauna
- C. Tang, F. Leasi, U. Obertegger, A. Kieneke, T. Barraclough, D. Fontaneto
- Environmental ScienceProceedings of the National Academy of Sciences
- 17 September 2012
It is shown that meiofaunal diversity has been greatly underestimated by 18S eDNA surveys and that the use of COI provides a better estimate of diversity, while estimates of species richness using COI were robust among three of four commonly used delimitation metrics, whereas estimates using 18S varied widely with the different metrics.
The muscular system of Musellifer delamarei (Renaud-Mornant, 1968) and other chaetonotidans with implications for the phylogeny and systematization of the Paucitubulatina (Gastrotricha)
The results agree with recent phylogenetic inferences based on molecular characters and support the hypothesis that, within Paucitubulatina, dorsoventral muscles are plesiomorphies retained in marine, interstitial, hermaphroditic gastrotrichs.
Fifteen species in one: deciphering the Brachionus plicatilis species complex (Rotifera, Monogononta) through DNA taxonomy
- Scott Mills, J. A. Alcántara‐Rodríguez, E. Walsh
- Biology, Environmental ScienceHydrobiologia
- 1 July 2017
A dataset of previously available and newly generated sequences of COI and ITS1 for 1273 isolates of the Brachionus plicatilis complex is collated and used to explore phylogenetic signal in morphometric and ecological traits, and to understand correlation among the traits using phylogenetic comparative models.
The Necessity of DNA Taxonomy to Reveal Cryptic Diversity and Spatial Distribution of Meiofauna, with a Focus on Nemertea
Diversity of nemertean species is analyzed by considering the barcode region of the mitochondrial gene Cytochrome Oxidase subunit I (COI) and different species delineation approaches in order to infer evolutionarily significant units and results are consistent across different DNA taxonomy approaches.
Patterns of Diversity in Soft-Bodied Meiofauna: Dispersal Ability and Body Size Matter
The macroecological analysis of meiofauna indicates that not only body size but mostly dispersal ability and also occurrence in the endobenthic habitat are important correlates of diversity for these understudied animals, with different importance at different spatial scales.
Meiofauna densities and gastrotrich community composition in a Mediterranean sea cave
Results indicate that for meiofaunal taxa living in a Mediterranean, semi-submerged sea cave, the marine caves may represent hotspots of biodiversity and endemism; the driving forces at the base of the trophic depletion hypothesis seem to be responsible for structuring the meioFauna community inside the cave.
Cryptic diversity with wide salinity tolerance in the putative euryhaline Testudinella clypeata (Rotifera, Monogononta)
Investigating the species reality and distribution of a putative euryhaline rotifer species, Testudinella clypeata, and evaluating whether cryptic species are ecologically and/or geographically segregated suggests that DNA taxonomy improves estimates of the actual diversity of microscopic species, in contrast to the morphological approach.
First description of the serotonergic nervous system in a bdelloid rotifer: Macrotrachela quadricornifera Milne 1886 (Philodinidae)
Morphology of Xenodasys (Gastrotricha): the first species from the Mediterranean Sea and the establishment of Chordodasiopsis gen. nov. and Xenodasyidae fam. nov.
- M. Todaro, L. Guidi, F. Leasi, P. Tongiorgi
- BiologyJournal of the Marine Biological Association of…
- 25 August 2006
During a survey of the Italian marine meiofauna, several specimens of the rare gastrotrich genus Xenodasys were found in a submarine cave along the Ionian coast of Apulia. The finding represents the…
Musculature of two bdelloid rotifers, Adineta ricciae and Macrotrachela quadricornifera: organization in a functional and evolutionary perspective
The musculature of two bdelloid species, Adineta ricciae and Macrotrachela quadricornifera, was illustrated, and their organization was compared with other rotifer taxa to generate possible hypotheses of evolutionary relationships among Rotifera.