Results 61 to 70 of about 2,733 (168)
Background The marine annelid Platynereis dumerilii (Polychaeta, Nereididae) has been recognized as a slow-evolving lophotrochozoan that attracts increasing attention as a valuable model for evolutionary and developmental research.
Vilcinskas Andreas, Altincicek Boran
doaj +1 more source
ABSTRACT Mitochondria are dynamic and plastic, undergoing continuous fission and fusion and rearrangement of their bioenergetic sub‐compartments called cristae. These fascinating processes are best understood in animal and fungal models, which are taxonomically grouped together in the expansive Opisthokonta supergroup.
Hassan Hashimi +2 more
wiley +1 more source
Slit-Robo expression in the leech nervous system: insights into eyespot evolution
Background Slit and Robo are evolutionarily conserved ligand and receptor proteins, respectively, but the number of slit and robo gene paralogs varies across recent bilaterian genomes.
Hee-Jin Kwak +9 more
doaj +1 more source
An Ancient Anterior Patterning System Promotes Caudal Repression and Head Formation in Ecdysozoa [PDF]
Posterior expression of Caudal is required for early embryonic development in nematodes, arthropods, and vertebrates. In Drosophila, ectopic Caudal in anterior cells can induce head defects, and in Caenorhabditis the absence of Caudal in anterior embryonic cells is required for proper development. Anterior Caudal repression in these species is achieved
Schoppmeier, M. +4 more
openaire +3 more sources
The main differences between the ‘Ca. Hepatincolaceae’ and the Holosporales are their habitats and modes of existence. The former are non‐motile bacteria that exist extracellularly in the host gut lumen, associating with microvilli, while the latter are intracellular bacteria, primarily hosted by protists such as amoebae and ciliates, and often possess
Michele Castelli +8 more
wiley +1 more source
Pigment dispersing factors (PDFs, or PDHs in crustaceans) form a structurally related group of neuropeptides found throughout the Ecdysozoa and were first discovered as pigmentary effector hormones in crustaceans.
Jodi L. Alexander +6 more
doaj +1 more source
Breakdown of coevolution between symbiotic bacteria Wolbachia and their filarial hosts [PDF]
Wolbachia is an alpha-proteobacterial symbiont widely distributed in arthropods. Since the identification of Wolbachia in certain animal-parasitic nematodes (the Onchocercidae or filariae), the relationship between arthropod and nematode Wolbachia has ...
Emilie Lefoulon +6 more
doaj +2 more sources
An Orthologue of the Retinoic Acid Receptor (RAR) Is Present in the Ecdysozoa Phylum Priapulida [PDF]
Signalling molecules and their cognate receptors are central components of the Metazoa endocrine system. Defining their presence or absence in extant animal lineages is critical to accurately devise evolutionary patterns, physiological shifts and the impact of endocrine disrupting chemicals.
Elza S. S. Fonseca +7 more
openaire +2 more sources
A peritidal Burgess‐Shale‐type fauna from the middle Cambrian of western Canada
Abstract Burgess‐Shale‐type (BST) faunas have proven critical for mapping the Cambrian assembly of animal‐dominated ecosystems, but have so far only been reported from fully subaqueous deposits. Here we integrate evidence from ichnofossils, sedimentary features, and small carbonaceous fossils (SCFs) from the middle Cambrian (Late Guzhangian, Series 3 ...
Giovanni Mussini +2 more
wiley +1 more source
We present a genome assembly from an individual male Cetonia aurata (the Rose Chafer; Arthropoda; Insecta; Coleoptera; Scarabaeidae). The genome sequence is 479.6 megabases in span.
Andrew Grayson, Michael Geiser
doaj +1 more source

