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The Opisthokonta and the Ecdysozoa May Not Be Clades: Stronger Support for the Grouping of Plant and Animal than for Animal and Fungi and Stronger Support for the Coelomata than Ecdysozoa [PDF]
Molecular Biology and Evolution, 2005 In considering the best possible solutions for answering phylogenetic questions from genomic sequences, we have chosen a strategy that we suggest is superior to others that have gone previously. We have ignored multigene families and instead have used single-gene families. This minimizes the inadvertent analysis of paralogs.
Christopher J Creevey, James O Mcinerney
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Russian Journal of Developmental Biology, 2015
Science has accumulated to date such amounts of valuable and diverse information that no scientists can be encyclopedists (like those of the 17th and 18th centuries). Now every scientist is usually well informed only in one particular area and often needs consultations of other specialists. The current situation in biology is similar.
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Science has accumulated to date such amounts of valuable and diverse information that no scientists can be encyclopedists (like those of the 17th and 18th centuries). Now every scientist is usually well informed only in one particular area and often needs consultations of other specialists. The current situation in biology is similar.
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Proposing a solution to the Articulata-Ecdysozoa controversy
Zoologica Scripta, 2003Recent studies of animal radiation agree on monophyly of the Bilateria, but there is no consensus about the early radiation of the group. Protostomia and Deuterostomia are usually recognized, with two competing theories regarding the division of the Protostomia: one divides them into Spiralia and Cycloneuralia, the other into Lophotrochozoa and ...
Claus Nielsen
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Origin of arthropods and of the clades of Ecdysozoa
Russian Journal of Developmental Biology, 2013The problem of the origin of the phylum Arthropoda was long considered solved based on evolutionary morphology data. But molecular biological studies of recent years have put forward a new solution that contradicts the old one. Hence, the need arises to review the argumentation of both sides and search for ways to reach a consensus.
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Gelsolin in Onychophora and Tardigrada with notes on its variability in the Ecdysozoa
Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology, 2017Rearrangements of the filamentous actin network involve a broad range of actin binding proteins. Among these, the gelsolin proteins sever actin filaments, cap their fast growing end and nucleate actin assembly in a calcium-dependent manner. Here, we focus on the gelsolin of the onychophoran Peripatoides novaezealandiae and the eutardigrade Hypsibius ...
Prasath, Thiruketheeswaran +2 more
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The origins and evolution of the Ecdysozoa
2009AbstractEcdysozoa is a clade composed of eight phyla, three of which — arthropods, tardigrades, and onychophorans — share segmentation and have appendages, and the remaining five — nematodes, nematomorphs, priapulids, kinorhynchs, and loriciferans — are worms with an anterior proboscis or introvert.
Maximilian J. Telford +4 more
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Uncovering Ecdysozoa-specific Sphingomyelin Synthase by Phylogenetic Analysis of Metazoan Sequences
Zoological Science, 2019Sphingomyelin (SM) is a membrane phospholipid that is widely distributed in Metazoa; it is the major constituent of myelin sheaths in vertebrates. In mammals, two genes (SMS1 and SMS2) are responsible for its synthesis. No SM-producing genes have been clearly identified in insects and crustaceans (Ecdysozoa) despite the presence of a myelin sheath-like
Mitsuharu, Sato +2 more
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Происхождение членистоногих и клад Ecdysozoa
Онтогенез, 2013Проблема происхождения типа Членистоногих уже давно считалась решенной на основе данных эволюционной морфологии. Но молекулярно-биологические исследования последних лет выдвинули новое решение, противоречащее предыдущему. Таким образом, возникла необходимость пересмотра аргументации обеих сторон и поиска путей к достижению консенсуса.
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The multimeric β‐thymosin found in nematodes and arthropods is not a synapomorphy of the Ecdysozoa
Evolution & Development, 2004SummaryThe Ecdysozoa hypothesis proposes a clade of animals including arthropods and nematodes that share the characteristic of periodic molting or ecdysis. The original evidence supporting this hypothesis came from molecular phylogenies based on ribosomal RNA gene sequences. Contrary evidence has come from studies of multiple protein coding genes. One
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