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The fate of the larval epidermis in the Desor-larva of Lineus viridis (Pilidiophora, Nemertea) displays a historically constrained functional shift from planktotrophy to lecithotrophy
TLDR
The early cleavage and metamorphosis from intracapsular Desor-larva to juvenile stages in L. viridis is studied to elucidate the transition from the planktotrophic pilidum to lecithotrophic development.
Phylogenetic significance of chaetal arrangement and chaetogenesis in Maldanidae (Annelida)
TLDR
This study shows that functional considerations need to use phylogenies as backbone in maldanids and provides evidence that functionally constraint ontogenetic variation overlies historically (phylogenetically) constraint expression of structural information.
The future of nemertean taxonomy (phylum Nemertea) — a proposal
TLDR
The future of nemertean taxonomy (phylum Nemertea) — a proposal is proposed and a list of invited authors is provided.
Unravelling the Lineus ruber/viridis species complex (Nemertea, Heteronemertea)
TLDR
A comprehensive data set combining external morphology and three genetic markers (mitochondrial cytochrome c oxidase subunit I, 16S rRNA and nuclear internal transcribed spacer region) from 160 specimens of L. ruber and L. viridis provides a framework to unequivocally identify specimens as members of any of the three species.
Nemertean taxonomy—Implementing changes in the higher ranks, dismissing Anopla and Enopla
TLDR
The ranks Anopla and Enopla are eliminated and the following system of the Nemertea phylum is implemented and genus Hubrechtella is transferred from class Palaeonemertea to the class Pilidiophora.
Unexpected ultrastructure of an eye in Spiralia: the larval ocelli of Procephalothrix oestrymnicus (Nemertea)
TLDR
Investigation of the eyes of the larva of the palaeonemertean Procephalothrix oestrymnicus reveals that they differ fundamentally from the expected protostomian type, which deepens doubts regarding the validity of the hypothesis of an exclusively rhabdomeric line of visual photoreceptor cell evolution in Protostomia.
Ultrastructure of sperm and male reproductive system in Lineus viridis (Heteronemertea, Nemertea)
TLDR
Histological and ultrastructural data show that the gonad wall is lined with different aciliated endothelial cells and germ cells, while the gonoduct is formed by densely ciliated cells, which corroborates the predictions derived from the mode of reproduction.
Observations and Experiments on the Biology and Life History of Riseriellus occultus (Heteronemertea: Lineidae)
TLDR
Analysis of a population of Riseriellus occultus inhabiting the rocky intertidal in southern Brittany near Concarneau for more than 10 years suggests that R. occultus affects the structure of the rocky shore gastropod community.
Development of the Nervous System of Carinina ochracea (Palaeonemer-tea, Nemertea).
TLDR
Development of the adult nervous system in Nemertea is largely congruent with currently accepted hypotheses of nervous system development in Spiralia, while the development of the larva of Carinina ochracea was studied by means of immunofluorescence and confocal laserscanning microscopy.
Life history of Lineus viridis (Müller, 1774) (Heteronemertea, Nemertea)
TLDR
This study clearly shows that Lineus viridis is a perennial, iteroparous species with a pronounced sexual size dimorphism, and no evidence for sequential hermaphroditism has been found during this long-term study.
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