Results 21 to 30 of about 2,733 (168)

An EST screen from the annelid Pomatoceros lamarckii reveals patterns of gene loss and gain in animals

open access: yesBMC Evolutionary Biology, 2009
Background Since the drastic reorganisation of the phylogeny of the animal kingdom into three major clades of bilaterians; Ecdysozoa, Lophotrochozoa and Deuterostomia, it became glaringly obvious that the selection of model systems with extensive ...
Chen Wei-Chung   +6 more
doaj   +1 more source

Rare Coding Sequence Changes are Consistent with Ecdysozoa, not Coelomata [PDF]

open access: yesMolecular Biology and Evolution, 2007
There is growing interest in the use of alternative, more slowly-evolving RGCs (rare genomic changes). Recently, Rogozin and coauthors (Rogozin et al. 2007) proposed a novel phylogenetic method employing rare amino acid changes, RGC-CAMs (rare genomic changes-conserved amino acids-multiple substitutions).
Manuel, Irimia   +4 more
openaire   +2 more sources

The development of the larval nervous system, musculature and ciliary bands of Pomatoceros lamarckii (Annelida): heterochrony in polychaetes

open access: yesFrontiers in Zoology, 2006
Background To understand the evolution of animals it is essential to have taxon sampling across a representative spread of the animal kingdom. With the recent rearrangement of most of the Bilateria into three major clades (Ecdysozoa, Lophotrochozoa and ...
Shimeld Sebastian M   +3 more
doaj   +1 more source

Peripheral and central employment of acid-sensing ion channels during early bilaterian evolution

open access: yeseLife, 2023
Nervous systems are endowed with rapid chemosensation and intercellular signaling by ligand-gated ion channels (LGICs). While a complex, bilaterally symmetrical nervous system is a major innovation of bilaterian animals, the employment of specific LGICs ...
Josep Martí-Solans   +4 more
doaj   +1 more source

Identification of proteins from the secretory/excretory products (SEPs) of the branchiuran ectoparasite Argulus foliaceus (Linnaeus, 1758) reveals unique secreted proteins amongst haematophagous ecdysozoa

open access: yesParasites & Vectors, 2020
Background It is hypothesised that being a blood-feeding ectoparasite, Argulus foliaceus (Linnaeus, 1758), uses similar mechanisms for digestion and host immune evasion to those used by other haematophagous ecdysozoa, including caligid copepods (e.g. sea
Aisha AmbuAli   +6 more
doaj   +1 more source

The Ecdysozoa: Artifact or monophylum?

open access: yesJournal of Zoological Systematics and Evolutionary Research, 2009
The molecular support for the recently postulated hypothesis ‘Ecdysozoa’ is re-examined. Some 18S rDNA-alignments clearly contain a pattern of character states that cause tree building methods to identify a clade comprised of arthropods and Cycloneuralia.
J. W. Wägele   +3 more
openaire   +1 more source

Growth and Maintenance of Wolbachia in Insect Cell Lines

open access: yesInsects, 2021
The obligate intracellular microbe, Wolbachia pipientis (Rickettsiales; Anaplasmataceae), is a Gram-negative member of the alpha proteobacteria that infects arthropods and filarial worms.
Ann M. Fallon
doaj   +1 more source

Comparative myoanatomy of Tardigrada: new insights from the heterotardigrades Actinarctus doryphorus (Tanarctidae) and Echiniscoides sigismundi (Echiniscoididae)

open access: yesBMC Evolutionary Biology, 2019
Background Tardigrada is a group of microscopic invertebrates distributed worldwide in permanent and temporal aquatic habitats. Famous for their extreme stress tolerance, tardigrades are also of interest due to their close relationship with Arthropoda ...
Dennis Krog Persson   +5 more
doaj   +1 more source

Exploring the antimicrobial peptidome of nematodes through phylum-spanning in silico analyses highlights novel opportunities for pathogen control.

open access: yesPLoS Neglected Tropical Diseases, 2023
Antimicrobial Peptides (AMPs) are key constituents of the invertebrate innate immune system and provide critical protection against microbial threat.
Allister Irvine   +3 more
doaj   +1 more source

The Natural History of Teneurins: A Billion Years of Evolution in Three Key Steps

open access: yesFrontiers in Neuroscience, 2019
The entire evolutionary history of the animal gene family, Teneurin, can be summed up in three key steps, plus three salient footnotes. In a shared ancestor of all bilaterians, the first step began with gene fusions that created a protein with an amino ...
Ron Wides
doaj   +1 more source

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