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The widely used small subunit 18S rDNA molecule greatly underestimates true diversity in biodiversity surveys of the meiofauna
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.
Novel implications for the basal internal relationships of Gastrotricha revealed by an analysis of morphological characters
According to this analysis, there might have been a single invasion of the freshwater environment in the stem lineage of Abursata followed by several independent returns to marine habitats within the monophylum Paucitubulatina.
Spatially structured populations with a low level of cryptic diversity in European marine Gastrotricha
Species of the marine meiofauna such as Gastrotricha are known to lack dispersal stages and are thus assumed to have low dispersal ability and low levels of gene flow between populations. Yet, most
Anatomy and ultrastructure of the reproductive organs in Dactylopodola typhle (Gastrotricha: Macrodasyida) and their possible functions in sperm transfer
Preliminary phylogenetic considerations indicate that the stem species of Macrodasyida, perhaps that of all Gastrotricha, had paired ovaries and paired testes, an unpaired uterus, and only one accessory reproductive organ, the so-called caudal organ.
Ultrastructure of protonephridia in Xenotrichula carolinensis syltensis and Chaetonotus maximus (Gastrotricha: Chaetonotida): comparative evaluation of the gastrotrich excretory organs
A comparison with the protonephridia of other species of the Gastrotricha allows hypothesising the following autapomorphies of the Paucitubulata: The bicellular terminal organ with a composite filter, the convoluted distal canal cell lumen and the absence of cilia, ciliary basal structures and microvilli within the canal cell.
Structure, function and evolution of somatic musculature in Dasydytidae (Paucitubulatina, Gastrotricha)
Structural and behavioral observations suggest that muscular spine abduction in D. goniathrix is brought about by synergistic contraction of the musculi obliqua and m.
A new species of Thaumastoderma (Gastrotricha: Macrodasyida) from the Antarctic deep sea with a phylogenetic analysis of the whole genus
  • A. Kieneke
  • Biology
    Journal of the Marine Biological Association of…
  • 24 September 2009
A phylogenetic analysis of the genus Thaumastoderma reveals that Th.