Browsing Sars International Centre for Marine Molecular Biology by Issue Date
Now showing items 1-20 of 61
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Evolutionary and behavioral analysis of neuropeptides in bilaterians
(The University of Bergen, 2017-06-29)Neuropeptides are a diverse group of neurosecretory signaling molecules that are utilized by the nervous system of all bilaterian animals. These signaling molecules are involved in most physiological processes and can ...Doctoral thesis -
An ancient FMRFamide-related peptide-receptor pair induces defense behavior in a brachiopod larva
(2017)Animals show different behaviors that can consist of various spatially or temporally separated sub-reactions. Even less complex organisms, like ciliated larvae that display important behaviors (e.g. metamorphosis, defense, ...Journal article -
A safer, urea-based in situ hybridization method improves detection of gene expression in diverse animal species
(2017)In situ hybridization is a widely employed technique allowing spatial visualization of gene expression in fixed specimens. It has proven to be essential to our understanding of biological processes, including developmental ...Journal article -
Embryonic chirality and the evolution of spiralian left - right asymmetries
(The Royal Society Publishing, 2016-12)The group Spiralia includes species with one of the most significant cases of left–right asymmetries in animals: the coiling of the shell of gastropod molluscs (snails). In this animal group, an early event of embryonic ...Journal article -
Molecular regionalization in the compact brain of the meiofaunal annelid Dinophilus gyrociliatus (Dinophilidae)
(BioMed Central, 2016-08-30)Background: Annelida is a morphologically diverse animal group that exhibits a remarkable variety in nervous system architecture (e.g., number and location of longitudinal cords, architecture of the brain). Despite this ...Journal article -
Expression of segment polarity genes in brachiopods supports a non-segmental ancestral role of engrailed for bilaterians
(Nature Publishing Group, 2016-08-26)The diverse and complex developmental mechanisms of segmentation have been more thoroughly studied in arthropods, vertebrates and annelids—distantly related animals considered to be segmented. Far less is known about the ...Journal article -
Developmental expression of “germline”- and “sex determination”-related genes in the ctenophore Mnemiopsis leidyi
(BioMed Central, 2016-08-02)Background: An essential developmental pathway in sexually reproducing animals is the specification of germ cells and the differentiation of mature gametes, sperm and oocytes. The “germline” genes vasa, nanos ...Journal article -
Xenacoelomorpha's significance for understanding bilaterian evolution
(Elsevier, 2016-08)The Xenacoelomorpha, with its phylogenetic position as sister group of the Nephrozoa (Protostomia + Deuterostomia), plays a key-role in understanding the evolution of bilaterian cell types and organ systems. Current studies ...Journal article -
Owenia fusiformis – a basally branching annelid suitable for studying ancestral features of annelid neural development
(BioMed Central, 2016-06-16)Background Comparative investigations on bilaterian neurogenesis shed light on conserved developmental mechanisms across taxa. With respect to annelids, most studies focus on taxa deeply nested within the annelid tree, ...Journal article -
Glypican1/2/4/6 and sulfated glycosaminoglycans regulate the patterning of the primary body axis in the cnidarian Nematostella vectensis
(Elsevier, 2016-06)Glypicans are members of the heparan sulfate (HS) subfamily of proteoglycans that can function in cell adhesion, cell crosstalk and as modulators of the major developmental signalling pathways in bilaterians. The evolutionary ...Journal article -
Development of the aboral domain in Nematostella requires β-catenin and the opposing activities of Six3/6 and Frizzled5/8
(The Company of Biologists, 2016-03)The development of the oral pole in cnidarians and the posterior pole in bilaterians is regulated by canonical Wnt signaling, whereas a set of transcription factors, including Six3/6 and FoxQ2, controls aboral development ...Journal article -
The larval nervous system of the penis worm Priapulus caudatus (Ecdysozoa)
(The Royal Society Publishing, 2016-01)The origin and extreme diversification of the animal nervous system is a central question in biology. While most of the attention has traditionally been paid to those lineages with highly elaborated nervous systems (e.g. ...Journal article -
Regulatory RNA at the root of animals: dynamic expression of developmental lincRNAs in the calcisponge Sycon ciliatum
(The Royal Society Publishing, 2015-12-23)Long non-coding RNAs (lncRNAs) play important regulatory roles during animal development, and it has been hypothesized that an RNA-based gene regulation was important for the evolution of developmental complexity in ...Journal article -
Posterior eyespots in larval chitons have a molecular identity similar to anterior cerebral eyes in other bilaterians
(BioMed Central, 2015-12-22)Background: Development of cerebral eyes is generally based on fine-tuned networks and closely intertwined with the formation of brain and head. Consistently and best studied in insects and vertebrates, many signaling ...Journal article -
Evolution of eumetazoan nervous systems: Insights from cnidarians
(Royal Society, 2015-12-19)Cnidarians, the sister group to bilaterians, have a simple diffuse nervous system. This morphological simplicity and their phylogenetic position make them a crucial group in the study of the evolution of the nervous system. ...Journal article -
Embracing the comparative approach: How robust phylogenies and broader developmental sampling impacts the understanding of nervous system evolution
(The Royal Society Publishing, 2015-11-09)Molecular biology has provided a rich dataset to develop hypotheses of nervous system evolution. The startling patterning similarities between distantly related animals during the development of their central nervous system ...Journal article -
Ultrastructural correlates of enhanced norepinephrine and neuropeptide y cotransmission in the spontaneously hypertensive rat brain
(Sage, 2015-10-29)The spontaneously hypertensive rat (SHR) replicates many clinically relevant features of human essential hypertension and also exhibits behavioral symptoms of attention-deficit/hyperactivity disorder and dementia. The SHR ...Journal article -
Assembly and positioning of actomyosin rings by contractility and planar cell polarity
(eLife, 2015-10-21)The actomyosin cytoskeleton is a primary force-generating mechanism in morphogenesis, thus a robust spatial control of cytoskeletal positioning is essential. In this report, we demonstrate that actomyosin contractility and ...Journal article -
Regulation of Nematostella neural progenitors by SoxB, Notch and bHLH genes
(The Company of Biologists Ltd, 2015-10-06)Notch signalling, SoxB and Group A bHLH ‘proneural’ genes are conserved regulators of the neurogenic program in many bilaterians. However, the ancestry of their functions and interactions is not well understood. We address ...Journal article -
Evolution and development of the adelphophagic, intracapsular Schmidt's larva of the nemertean Lineus ruber
(BioMed Central, 2015-09-28)Background: The life cycle of many animals includes a larval stage, which has diversified into an astonishing variety of ecological strategies. The Nemertea is a group of spiralians that exhibits a broad diversity of larval ...Journal article
